Ambiq Apollo3 Blue MCU Datasheet: Ultra-Low Power Cortex-M4 with BTLE & 14b ADC

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Apollo3-Blue是一款由Ambiq Micro公司设计的超低功耗微控制器家族中的成员，其详细的数据手册（DS-A3-0p15p0）提供了关于这款产品的全面规格和功能介绍。该文档涵盖了以下几个关键知识点： 1. **硬件架构**： - **Cortex M4处理器**：Apollo3Blue采用Cortex-M4内核，配备了浮点单元(FPU)，能够支持高达96MHz的时钟频率，确保高性能处理能力。 - **传感器接口**：内置14位、1.2 MS/s的15通道ADC，用于连接各种传感器，支持数据采集和分析。 2. **无线通信**： - **蓝牙5控制器**：支持先进的蓝牙技术，提供低功耗和高效的数据传输，满足现代物联网应用的需求。 - **安全特性**：包含安全模块，保护数据通信免受潜在威胁。 3. **电源管理**： - **电压监控**：通过内置功能监测电源电压，确保系统的稳定运行。 - **棕色-out检测**：在电压下降到危险水平时提供保护，防止系统损坏。 - **电源管理和唤醒中断控制器**：实现精细的功耗控制，支持睡眠模式下的唤醒功能。 4. **存储器**： - **Flash内存**：拥有1MB的闪存存储空间，满足程序代码和数据存储需求。 - **RAM**：384kB的片上RAM支持高效的临时数据处理和任务调度。 5. **I/O和外设**： - **GPIO**：提供50个通用输入/输出通道，可用于连接各种外部设备。 - **串行通信**：包括两个UART接口，用于串口通信。 - **模拟信号接口**：支持I2S接口，以及一个PDM（脉冲密度调制）接口，适用于音频应用。 - **数字通信接口**：支持多个I2C和SPI接口，作为主从模式的控制器。 6. **定时器和计数器**： - **SysTimer/RTC**：系统时钟和实时时钟功能，确保时间同步和精确计时。 - **多通道PWM**：共8个PWM通道，支持灵活的定时和脉宽调制输出。 7. **电源供应**： - **Buck转换器**：集成电源管理电路，能够调整电压，以适应不同负载需求。 8. **唤醒和控制**： - **唤醒中断控制器**：支持多种中断源，便于实现自定义唤醒条件。 - **复位控制器**：包括电源上电复位、软件复位等功能，保证系统的可靠启动。 Apollo3-Blue MCU是一款功能强大且功耗极低的微控制器，适合那些对能耗敏感，同时需要高集成度和无线通信能力的应用场景，如智能家居、物联网设备和便携式电子设备等。其丰富的外设接口和强大的处理能力使其在各种嵌入式系统设计中具有很高的适用性。

Apollo3 Blue MCU Datasheet

Ultra-Low Power Apollo MCU Family

DS-A3-0p15p0 Page 16 of 940 2021 Ambiq Micro, Inc.

Table 45: STIM6 Register .....................................................................................................107

Table 46: STIM6 Register Bits..............................................................................................107

Table 47: STIM7 Register .....................................................................................................107

Table 48: STIM7 Register Bits..............................................................................................107

Table 49: STIM8 Register .....................................................................................................108

Table 50: STIM8 Register Bits..............................................................................................108

Table 51: STIM9 Register .....................................................................................................108

Table 52: STIM9 Register Bits..............................................................................................108

Table 53: STIM10 Register ...................................................................................................109

Table 54: STIM10 Register Bits............................................................................................109

Table 55: STIM11 Register ...................................................................................................109

Table 56: STIM11 Register Bits............................................................................................109

Table 57: STIM12 Register ...................................................................................................110

Table 58: STIM12 Register Bits............................................................................................110

Table 59: STIM13 Register ...................................................................................................110

Table 60: STIM13 Register Bits............................................................................................110

Table 61: STIM14 Register ...................................................................................................111

Table 62: STIM14 Register Bits............................................................................................111

Table 63: STIM15 Register ...................................................................................................111

Table 64: STIM15 Register Bits............................................................................................111

Table 65: STIM16 Register ...................................................................................................112

Table 66: STIM16 Register Bits............................................................................................112

Table 67: STIM17 Register ...................................................................................................112

Table 68: STIM17 Register Bits............................................................................................112

Table 69: STIM18 Register ...................................................................................................113

Table 70: STIM18 Register Bits............................................................................................113

Table 71: STIM19 Register ...................................................................................................113

Table 72: STIM19 Register Bits............................................................................................113

Table 73: STIM20 Register ...................................................................................................114

Table 74: STIM20 Register Bits............................................................................................114

Table 75: STIM21 Register ...................................................................................................114

Table 76: STIM21 Register Bits............................................................................................114

Table 77: STIM22 Register ...................................................................................................115

Table 78: STIM22 Register Bits............................................................................................115

Table 79: STIM23 Register ...................................................................................................115

Table 80: STIM23 Register Bits............................................................................................115

Table 81: STIM24 Register ...................................................................................................116

Table 82: STIM24 Register Bits............................................................................................116

Table 83: STIM25 Register ...................................................................................................116

Table 84: STIM25 Register Bits............................................................................................116

Table 85: STIM26 Register ...................................................................................................117

Table 86: STIM26 Register Bits............................................................................................117

Table 87: STIM27 Register ...................................................................................................117

Table 88: STIM27 Register Bits............................................................................................117

Table 89: STIM28 Register ...................................................................................................118

Table 90: STIM28 Register Bits............................................................................................118

Apollo3 Blue MCU Datasheet

Ultra-Low Power Apollo MCU Family

DS-A3-0p15p0 Page 17 of 940 2021 Ambiq Micro, Inc.

Table 91: STIM29 Register ...................................................................................................118

Table 92: STIM29 Register Bits............................................................................................118

Table 93: STIM30 Register ...................................................................................................119

Table 94: STIM30 Register Bits............................................................................................119

Table 95: STIM31 Register ...................................................................................................119

Table 96: STIM31 Register Bits............................................................................................119

Table 97: TER Register .........................................................................................................120

Table 98: TER Register Bits..................................................................................................120

Table 99: TPR Register..........................................................................................................120

Table 100: TPR Register Bits ................................................................................................120

Table 101: TCR Register .......................................................................................................121

Table 102: TCR Register Bits................................................................................................121

Table 103: LOCKAREG Register .........................................................................................122

Table 104: LOCKAREG Register Bits..................................................................................122

Table 105: LOCKSREG Register..........................................................................................122

Table 106: LOCKSREG Register Bits ..................................................................................122

Table 107: PID4 Register ......................................................................................................123

Table 108: PID4 Register Bits ...............................................................................................123

Table 109: PID5 Register ......................................................................................................123

Table 110: PID5 Register Bits ...............................................................................................124

Table 111: PID6 Register ......................................................................................................124

Table 112: PID6 Register Bits ...............................................................................................124

Table 113: PID7 Register ......................................................................................................124

Table 114: PID7 Register Bits ...............................................................................................125

Table 115: PID0 Register ......................................................................................................125

Table 116: PID0 Register Bits ...............................................................................................125

Table 117: PID1 Register ......................................................................................................125

Table 118: PID1 Register Bits ...............................................................................................126

Table 119: PID2 Register ......................................................................................................126

Table 120: PID2 Register Bits ...............................................................................................126

Table 121: PID3 Register ......................................................................................................126

Table 122: PID3 Register Bits ...............................................................................................127

Table 123: CID0 Register ......................................................................................................127

Table 124: CID0 Register Bits...............................................................................................127

Table 125: CID1 Register ......................................................................................................127

Table 126: CID1 Register Bits...............................................................................................128

Table 127: CID2 Register ......................................................................................................128

Table 128: CID2 Register Bits...............................................................................................128

Table 129: CID3 Register ......................................................................................................128

Table 130: CID3 Register Bits...............................................................................................129

Table 131: MCUCTRL Register Map ...................................................................................131

Table 132: CHIPPN Register.................................................................................................133

Table 133: CHIPPN Register Bits .........................................................................................133

Table 134: CHIPID0 Register................................................................................................134

Table 135: CHIPID0 Register Bits ........................................................................................134

Table 136: CHIPID1 Register................................................................................................134

Apollo3 Blue MCU Datasheet

Ultra-Low Power Apollo MCU Family

DS-A3-0p15p0 Page 18 of 940 2021 Ambiq Micro, Inc.

Table 137: CHIPID1 Register Bits ........................................................................................134

Table 138: CHIPREV Register..............................................................................................135

Table 139: CHIPREV Register Bits ......................................................................................135

Table 140: VENDORID Register ..........................................................................................135

Table 141: VENDORID Register Bits...................................................................................135

Table 142: SKU Register.......................................................................................................136

Table 143: SKU Register Bits ...............................................................................................136

Table 144: FEATUREENABLE Register .............................................................................136

Table 145: FEATUREENABLE Register Bits......................................................................137

Table 146: DEBUGGER Register .........................................................................................137

Table 147: DEBUGGER Register Bits..................................................................................138

Table 148: ADCPWRDLY Register......................................................................................138

Table 149: ADCPWRDLY Register Bits ..............................................................................138

Table 150: ADCCAL Register ..............................................................................................139

Table 151: ADCCAL Register Bits .......................................................................................139

Table 152: ADCBATTLOAD Register.................................................................................139

Table 153: ADCBATTLOAD Register Bits .........................................................................140

Table 154: ADCTRIM Register ............................................................................................140

Table 155: ADCTRIM Register Bits .....................................................................................140

Table 156: ADCREFCOMP Register....................................................................................141

Table 157: ADCREFCOMP Register Bits ............................................................................141

Table 158: XTALCTRL Register ..........................................................................................142

Table 159: XTALCTRL Register Bits...................................................................................142

Table 160: XTALGENCTRL Register..................................................................................143

Table 161: XTALGENCTRL Register Bits ..........................................................................143

Table 162: MISCCTRL Register...........................................................................................144

Table 163: MISCCTRL Register Bits ...................................................................................144

Table 164: BOOTLOADER Register....................................................................................144

Table 165: BOOTLOADER Register Bits ............................................................................145

Table 166: SHADOWVALID Register.................................................................................146

Table 167: SHADOWVALID Register Bits .........................................................................146

Table 168: SCRATCH0 Register ..........................................................................................146

Table 169: SCRATCH0 Register Bits ...................................................................................147

Table 170: SCRATCH1 Register ..........................................................................................147

Table 171: SCRATCH1 Register Bits ...................................................................................147

Table 172: ICODEFAULTADDR Register ..........................................................................147

Table 173: ICODEFAULTADDR Register Bits ...................................................................148

Table 174: DCODEFAULTADDR Register.........................................................................148

Table 175: DCODEFAULTADDR Register Bits .................................................................148

Table 176: SYSFAULTADDR Register ...............................................................................148

Table 177: SYSFAULTADDR Register Bits........................................................................149

Table 178: FAULTSTATUS Register...................................................................................149

Table 179: FAULTSTATUS Register Bits ...........................................................................149

Table 180: FAULTCAPTUREEN Register ..........................................................................150

Table 181: FAULTCAPTUREEN Register Bits ...................................................................150

Table 182: DBGR1 Register..................................................................................................151

Apollo3 Blue MCU Datasheet

Ultra-Low Power Apollo MCU Family

DS-A3-0p15p0 Page 19 of 940 2021 Ambiq Micro, Inc.

Table 183: DBGR1 Register Bits ..........................................................................................151

Table 184: DBGR2 Register..................................................................................................151

Table 185: DBGR2 Register Bits ..........................................................................................151

Table 186: PMUENABLE Register ......................................................................................152

Table 187: PMUENABLE Register Bits ...............................................................................152

Table 188: TPIUCTRL Register............................................................................................152

Table 189: TPIUCTRL Register Bits ....................................................................................152

Table 190: OTAPOINTER Register......................................................................................153

Table 191: OTAPOINTER Register Bits ..............................................................................153

Table 192: SRAMMODE Register........................................................................................154

Table 193: SRAMMODE Register Bits ................................................................................154

Table 194: KEXTCLKSEL Register .....................................................................................155

Table 195: KEXTCLKSEL Register Bits..............................................................................155

Table 196: SIMOBUCK3 Register........................................................................................155

Table 197: SIMOBUCK3 Register Bits ................................................................................156

Table 198: SIMOBUCK4 Register........................................................................................156

Table 199: SIMOBUCK4 Register Bits ................................................................................157

Table 200: BLEBUCK2 Register ..........................................................................................158

Table 201: BLEBUCK2 Register Bits...................................................................................158

Table 202: FLASHWPROT0 Register ..................................................................................159

Table 203: FLASHWPROT0 Register Bits...........................................................................159

Table 204: FLASHWPROT1 Register ..................................................................................159

Table 205: FLASHWPROT1 Register Bits...........................................................................159

Table 206: FLASHRPROT0 Register ...................................................................................160

Table 207: FLASHRPROT0 Register Bits............................................................................160

Table 208: FLASHRPROT1 Register ...................................................................................160

Table 209: FLASHRPROT1 Register Bits............................................................................160

Table 210: DMASRAMWRITEPROTECT0 Register..........................................................161

Table 211: DMASRAMWRITEPROTECT0 Register Bits ..................................................161

Table 212: DMASRAMWRITEPROTECT1 Register..........................................................161

Table 213: DMASRAMWRITEPROTECT1 Register Bits ..................................................161

Table 214: DMASRAMREADPROTECT0 Register............................................................162

Table 215: DMASRAMREADPROTECT0 Register Bits ....................................................162

Table 216: DMASRAMREADPROTECT1 Register............................................................162

Table 217: DMASRAMREADPROTECT1 Register Bits ....................................................162

Table 218: CACHECTRL Register Map...............................................................................167

Table 219: CACHECFG Register..........................................................................................168

Table 220: CACHECFG Register Bits ..................................................................................168

Table 221: FLASHCFG Register ..........................................................................................169

Table 222: FLASHCFG Register Bits ...................................................................................169

Table 223: CTRL Register.....................................................................................................170

Table 224: CTRL Register Bits .............................................................................................170

Table 225: NCR0START Register ........................................................................................171

Table 226: NCR0START Register Bits.................................................................................172

Table 227: NCR0END Register ............................................................................................172

Table 228: NCR0END Register Bits .....................................................................................172

Apollo3 Blue MCU Datasheet

Ultra-Low Power Apollo MCU Family

DS-A3-0p15p0 Page 20 of 940 2021 Ambiq Micro, Inc.

Table 229: NCR1START Register ........................................................................................173

Table 230: NCR1START Register Bits.................................................................................173

Table 231: NCR1END Register ............................................................................................173

Table 232: NCR1END Register Bits .....................................................................................173

Table 233: DMON0 Register.................................................................................................174

Table 234: DMON0 Register Bits .........................................................................................174

Table 235: DMON1 Register.................................................................................................174

Table 236: DMON1 Register Bits .........................................................................................174

Table 237: DMON2 Register.................................................................................................175

Table 238: DMON2 Register Bits .........................................................................................175

Table 239: DMON3 Register.................................................................................................175

Table 240: DMON3 Register Bits .........................................................................................175

Table 241: IMON0 Register ..................................................................................................176

Table 242: IMON0 Register Bits...........................................................................................176

Table 243: IMON1 Register ..................................................................................................176

Table 244: IMON1 Register Bits...........................................................................................176

Table 245: IMON2 Register ..................................................................................................177

Table 246: IMON2 Register Bits...........................................................................................177

Table 247: IMON3 Register ..................................................................................................177

Table 248: IMON3 Register Bits...........................................................................................177

Table 249: BLEIF Register Map ...........................................................................................191

Table 250: FIFO Register ......................................................................................................193

Table 251: FIFO Register Bits...............................................................................................193

Table 252: FIFOPTR Register...............................................................................................193

Table 253: FIFOPTR Register Bits .......................................................................................194

Table 254: FIFOTHR Register ..............................................................................................194

Table 255: FIFOTHR Register Bits.......................................................................................194

Table 256: FIFOPOP Register...............................................................................................195

Table 257: FIFOPOP Register Bits .......................................................................................195

Table 258: FIFOPUSH Register ............................................................................................195

Table 259: FIFOPUSH Register Bits.....................................................................................196

Table 260: FIFOCTRL Register ............................................................................................196

Table 261: FIFOCTRL Register Bits.....................................................................................196

Table 262: FIFOLOC Register ..............................................................................................197

Table 263: FIFOLOC Register Bits.......................................................................................197

Table 264: CLKCFG Register ...............................................................................................197

Table 265: CLKCFG Register Bits........................................................................................198

Table 266: CMD Register......................................................................................................198

Table 267: CMD Register Bits ..............................................................................................199

Table 268: CMDRPT Register ..............................................................................................199

Table 269: CMDRPT Register Bits .......................................................................................200

Table 270: OFFSETHI Register ............................................................................................200

Table 271: OFFSETHI Register Bits.....................................................................................200

Table 272: CMDSTAT Register............................................................................................201

Table 273: CMDSTAT Register Bits ....................................................................................201

Table 274: INTEN Register...................................................................................................201

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