SiliconLabs C8051F39x/37x: 50MIPS Mixed-Signal MCU with Analog Peripherals

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"C8051F39x-37x-1397844.pdf" 是一份关于Silicon Laboratories公司的C8051F39x/37x系列微控制器(MCU)的技术文档。这个系列的MCU拥有高性能、低功耗的特点，并集成了丰富的模拟外设。 C8051F39x/37x微控制器的核心性能在于其50 MIPS（每秒百万指令）的处理速度和16kB的Flash存储以及512B的EEPROM。这使得它在嵌入式系统中能高效地运行复杂程序和存储数据。在模拟外围设备方面，该系列MCU包含以下功能： 1. **10位ADC**：提供高达500ksps（千样本每秒）的可编程吞吐量，能够处理快速变化的模拟信号。它支持多达16个外部输入，可配置为单端或差分输入，并且可以使用片上电压参考、VDD或外部VREF引脚作为参考电压。同时，支持内部和外部启动转换源，增强了灵活性。 2. **两个10位电流输出DAC**：支持通过复位进行连续操作，适用于需要精确电流控制的应用场景。 3. **比较器**：具备可编程的滞后和响应时间，可配置为中断或复位源，增强了系统的反应能力。 4. **精密温度传感器**：提供±2°C的精度，跨越整个温度范围无需用户校准，适合于温度监测和控制应用。在调试功能上，C8051F39x/37x集成有片上调试电路，允许全速、非侵入式的系统内调试，无需额外的仿真器。调试工具提供了断点、单步执行、内存和寄存器的检查与修改功能，方便了开发过程。在低功耗设计上，C8051F39x/37x在使用49MHz内部精密振荡器时，活动模式下电流仅为160µA/MHz，而停止模式下电流低至200nA，这使其在电池供电或能源受限的环境中表现出色。根据不同的工作环境，C8051F39x系列的温度范围为-40°C到+105°C，而F37x系列的温度范围略小，为-40°C到+85°C。封装方面，MCU采用24引脚QFN封装（对于F390/1/4/6/8和F370/4型号），这种封装形式有利于减少板级空间，提高系统集成度。 C8051F39x/37x系列微控制器是针对需要高速处理、高级模拟功能、低功耗和良好调试支持的嵌入式应用而设计的理想选择，尤其适用于需要精确模拟输入输出、温度测量和高效电源管理的场合。

C8051F39x/37x

16 Rev. 1.1

SFR Definition 32.5. PCA0CPMn: PCA Capture/Compare Mode .............................. 294

SFR Definition 32.6. PCA0L: PCA Counter/Timer Low Byte ...................................... 295

SFR Definition 32.7. PCA0H: PCA Counter/Timer High Byte ..................................... 295

SFR Definition 32.8. PCA0CPLn: PCA Capture Module Low Byte ............................. 296

SFR Definition 32.9. PCA0CPHn: PCA Capture Module High Byte ........................... 296

C2 Register Definition 33.1. C2ADD: C2 Address ...................................................... 297

C2 Register Definition 33.2. DEVICEID: C2 Device ID ............................................... 298

C2 Register Definition 33.3. REVID: C2 Revision ID .................................................. 298

C2 Register Definition 33.4. FPCTL: C2 Flash Programming Control ........................ 299

C2 Register Definition 33.5. FPDAT: C2 Flash Programming Data ............................ 299

C8051F39x/37x

Rev. 1.1 17

1. System Overview

C8051F39x/37x devices are fully integrated mixed-signal System-on-a-Chip MCUs. Highlighted features

are listed below. Refer to Section “2. Ordering Information” on page 20 for specific product feature selec-

tion and part ordering numbers.

 High-speed pipelined 8051-compatible microcontroller core (up to 50 MIPS)

 In-system, full-speed, non-intrusive debug interface (on-chip)

 True 10-bit 500 ksps 20 or 16-channel single-ended/differential ADC with analog multiplexer

 Two 10-bit Current Output DACs

 Precision temperature sensor with ±2 °C absolute accuracy

 Precision programmable 49 MHz internal oscillator

 Low-power, low-frequency oscillator

 16 kB of on-chip Flash memory

 1024 bytes of on-chip RAM

 Co-packaged with 512 bytes of EEPROM memory, accessible via I

C (C8051F37x)

 Two SMBus/I

C, UART, and SPI serial interfaces implemented in hardware

 Six general-purpose 16-bit timers

 Programmable Counter/Timer Array (PCA) with three capture/compare modules and Watchdog Timer

function

 On-chip Power-On Reset, V

Monitor, and Temperature Sensor

 On-chip Voltage Comparator

 21 or 17 Port I/O

 Low-power suspend mode with fast wake-up time

With on-chip Power-On Reset, V

monitor, Watchdog Timer, and clock oscillator, the C8051F39x/37x

devices are truly stand-alone System-on-a-Chip solutions. The Flash memory can be reprogrammed even

in-circuit, providing non-volatile data storage, and also allowing field upgrades of the 8051 firmware. User

software has complete control of all peripherals, and may individually shut down any or all peripherals for

power savings.

The on-chip Silicon Labs 2-Wire (C2) Development Interface allows non-intrusive (uses no on-chip

resources), full speed, in-circuit debugging using the production MCU installed in the final application. This

debug logic supports inspection and modification of memory and registers, setting breakpoints, single

stepping, run and halt commands. All analog and digital peripherals are fully functional while debugging

using C2. The two C2 interface pins can be shared with user functions, allowing in-system debugging with-

out occupying package pins.

The C8051F37x devices are specified for 1.8 to 3.6 V operation over the industrial temperature range (–40

to +85 °C), while the C8051F39x devices operate over an extended temperature range (-40 to +105 °C).

The C8051F392/3/6/7/8/9 are available in a 20-pin QFN package and the C8051F390/1/4/5 and

C8051F37x are available in a 24-pin QFN package. Both package options are lead-free and RoHS compli-

ant. See Section “2. Ordering Information” on page 20 for ordering information. Block diagrams are

included in Figure 1.1, Figure 1.2 and Figure 1.3.

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