NXP LPC178x/7x: 高性能Cortex-M3微控制器

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"NXP Cortex M3 MCU是一款基于ARMCortex-M3内核的32位微控制器，适用于需要高集成度和低功耗的嵌入式应用。它提供了比同等时钟频率下的ARM7内核更好的性能，并具备现代化的调试功能和更高级别的支持块集成。" NXP的LPC178x/7x系列是基于Cortex-M3的微控制器，设计用于满足对集成度和低能耗有高要求的嵌入式系统。Cortex-M3核心是一款下一代处理器，其在相同时钟速度下表现出优于ARM7的性能。该核心采用3级流水线架构，并具有哈佛结构，拥有独立的本地指令和数据总线，以及一条针对外设的性能稍低的第三条总线。Cortex-M3还包括一个内部预取单元，支持推测性分支，提高了处理效率。为了实现从闪存执行代码时的最佳性能，LPC178x/7x微控制器配备了专用的闪存加速器。该器件的目标工作CPU频率高达120MHz。除了高性能的核心，LPC178x/7x还集成了丰富的外设： 1. 外部存储器控制器（EMC）：允许连接不同类型的外部存储设备，如SRAM、DRAM或闪存。 2. 大容量的闪存程序内存：高达512KB，用于存储程序代码。 3. 高速SRAM数据内存：高达96KB，为实时数据处理提供快速访问。 4. EEPROM数据内存：高达4032字节，用于非易失性数据存储。 5. LCD控制器（仅限LPC178x）：支持图形和文本显示功能。 6. 以太网接口：提供网络连接能力。 7. USB设备/主机/OTG功能：支持多种USB操作模式。 8. 通用目的DMA控制器：实现高效的数据传输，减轻CPU负担。此外，LPC178x/7x还可能包含其他常见的外设，如定时器、串行通信接口（如UART、SPI、I2C）、ADC、PWM等，这些功能使得LPC178x/7x成为广泛应用的理想选择，如工业控制、物联网设备、家用电器、汽车电子和消费电子等领域。其高效的能源管理和强大的处理能力，使得这款微控制器在需要高性能计算和低功耗的嵌入式解决方案中占据重要地位。

Objective data sheet Rev. 2 — 27 May 2011 16 of 117

NXP Semiconductors

LPC178x/7x

32-bit ARM Cortex-M3 microcontroller

P0[28] 48 R3 M1 34

[8]

<tb

I/O P0[28] — General purpose digital input/output pin.

I/O I2C0_SCL — I

C0 clock input/output (this pin uses a

specialized I2C pad.

I/O USB_SCL1 — I2C serial clock for communication with an

external USB transceiver.

P0[29] 61 U4 K5 42

[9]

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I/O P0[29] — General purpose digital input/output pin.

I/O USB_D+1 — USB port 1 bidirectional D+ line.

I EINT0

— External interrupt 0 input.

P0[30] 62 R6 N4 43

[9]

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I/O P0[30] — General purpose digital input/output pin.

I/O USB_D1 — USB port 1 bidirectional D line.

I EINT1

— External interrupt 1 input.

P0[31] 51 T2 N1 36

[9]

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I/O P0[31] — General purpose digital input/output pin.

I/O USB_D+2 — USB port 2 bidirectional D+ line.

P1[0] to

P1[31]

I/O Port 1: Port 1 is a 32 bit I/O port with individual direction

controls for each bit. The operation of port 1 pins depends upon

the pin function selected via the pin connect block

P1[0] 196 A3 B5 136

[3]

I/O P1[0] — General purpose digital input/output pin.

O ENET_TXD0 — Ethernet transmit data 0 (RMII/MII interface).

- R — Function reserved.

I T3_CAP1 — Capture input for Timer 3, channel 1.

I/O SSP2_SCK — Serial clock for SSP2.

P1[1] 194 B5 A5 135

[3]

I/O P1[1] — General purpose digital input/output pin.

O ENET_TXD1 — Ethernet transmit data 1 (RMII/MII interface).

- R — Function reserved.

O T3_MAT3 — Match output for Timer 3, channel 3.

I/O SSP2_MOSI — Master Out Slave In for SSP2.

P1[2] 185 D9 B7 -

[3]

I/O P1[2] — General purpose digital input/output pin.

O ENET_TXD2 — Ethernet transmit data 2 (MII interface).

O SD_CLK — Clock output line for SD card interface.

O PWM0[1] — Pulse Width Modulator 0, output 1.

P1[3] 177 A10 A9 -

[3]

I/O P1[3] — General purpose digital input/output pin.

O ENET_TXD3 — Ethernet transmit data 3 (MII interface).

I/O SD_CMD — Command line for SD card interface.

O PWM0[2] — Pulse Width Modulator 0, output 2.

Table 3. Pin description

…continued

Not all functions are available on all parts. See Table 2 (Ethernet, USB, LCD, QEI, SD/MMC, DAC pins) and Table 7 (EMC

pins).

Symbol

Pin LQFP208

Ball TFBGA208

Ball TFBGA180

Pin LQFP144

Reset state

[1]

Type

[2]

Description

Objective data sheet Rev. 2 — 27 May 2011 17 of 117

NXP Semiconductors

LPC178x/7x

32-bit ARM Cortex-M3 microcontroller

P1[4] 192 A5 C6 133

[3]

I/O P1[4] — General purpose digital input/output pin.

O ENET_TX_EN — Ethernet transmit data enable (RMII/MII

interface).

- R — Function reserved.

O T3_MAT2 — Match output for Timer 3, channel 2.

I/O SSP2_MISO — Master In Slave Out for SSP2.

P1[5] 156 A17 B13 -

[3]

I/O P1[5] — General purpose digital input/output pin.

O ENET_TX_ER — Ethernet Transmit Error (MII interface).

O SD_PWR — Power Supply Enable for external SD card power

supply.

O PWM0[3] — Pulse Width Modulator 0, output 3.

P1[6] 171 B11 B10 -

[3]

I/O P1[6] — General purpose digital input/output pin.

I ENET_TX_CLK — Ethernet Transmit Clock (MII interface).

I/O SD_DAT[0] — Data line 0 for SD card interface.

O PWM0[4] — Pulse Width Modulator 0, output 4.

P1[7] 153 D14 C13 -

[3]

I/O P1[7] — General purpose digital input/output pin.

I ENET_COL — Ethernet Collision detect (MII interface).

I/O SD_DAT[1] — Data line 1 for SD card interface.

O PWM0[5] — Pulse Width Modulator 0, output 5.

P1[8] 190 C7 B6 132

[3]

I/O P1[8] — General purpose digital input/output pin.

I ENET_CRS (ENET_CRS_DV) — Ethernet Carrier Sense (MII

interface) or Ethernet Carrier Sense/Data Valid (RMII interface).

- R — Function reserved.

O T3_MAT1 — Match output for Timer 3, channel 1.

I/O SSP2_SSEL — Slave Select for SSP2.

P1[9] 188 A6 D7 131

[3]

I/O P1[9] — General purpose digital input/output pin.

I ENET_RXD0 — Ethernet receive data 0 (RMII/MII interface).

- R — Function reserved.

O T3_MAT0 — Match output for Timer 3, channel 0.

P1[10] 186 C8 A7 129

[3]

I/O P1[10] — General purpose digital input/output pin.

I ENET_RXD1 — Ethernet receive data 1 (RMII/MII interface).

- R — Function reserved.

I T3_CAP0 — Capture input for Timer 3, channel 0.

Table 3. Pin description

…continued

Not all functions are available on all parts. See Table 2 (Ethernet, USB, LCD, QEI, SD/MMC, DAC pins) and Table 7 (EMC

pins).

Symbol

Pin LQFP208

Ball TFBGA208

Ball TFBGA180

Pin LQFP144

Reset state

[1]

Type

[2]

Description

Objective data sheet Rev. 2 — 27 May 2011 18 of 117

NXP Semiconductors

LPC178x/7x

32-bit ARM Cortex-M3 microcontroller

P1[11] 163 A14 A12 -

[3]

I/O P1[11] — General purpose digital input/output pin.

I ENET_RXD2 — Ethernet Receive Data 2 (MII interface).

I/O SD_DAT[2] — Data line 2 for SD card interface.

O PWM0[6] — Pulse Width Modulator 0, output 6.

P1[12] 157 A16 A14 -

[3]

I/O P1[12] — General purpose digital input/output pin.

I ENET_RXD3 — Ethernet Receive Data (MII interface).

I/O SD_DAT[3] — Data line 3 for SD card interface.

I PWM0_CAP0 — Capture input for PWM0, channel 0.

P1[13] 147 D16 D14 -

[3]

I/O P1[13] — General purpose digital input/output pin.

I ENET_RX_DV — Ethernet Receive Data Valid (MII interface).

P1[14] 184 A7 D8 128

[3]

I/O P1[14] — General purpose digital input/output pin.

I ENET_RX_ER — Ethernet receive error (RMII/MII interface).

- R — Function reserved.

I T2_CAP0 — Capture input for Timer 2, channel 0.

P1[15] 182 A8 A8 126

[3]

I/O P1[15] — General purpose digital input/output pin.

I ENET_RX_CLK (ENET_REF_CLK) — Ethernet Receive Clock

(MII interface) or Ethernet Reference Clock (RMII interface).

- R — Function reserved.

I/O I2C2_SDA — I

C2 data input/output (this pin does not use a

specialized I2C pad).

P1[16] 180 D10 B8 125

[3]

I/O P1[16] — General purpose digital input/output pin.

O ENET_MDC — Ethernet MIIM clock.

O I2S_TX_MCLK — I2S transmit master clock.

P1[17] 178 A9 C9 123

[3]

I/O P1[17] — General purpose digital input/output pin.

I/O ENET_MDIO — Ethernet MIIM data input and output.

O I2S_RX_MCLK — I2S receive master clock.

P1[18] 66 P7 L5 46

[3]

I/O P1[18] — General purpose digital input/output pin.

O USB_UP_LED1 — USB port 1 GoodLink LED indicator. It is

LOW when device is configured (non-control endpoints

enabled). It is HIGH when the device is not configured or during

global suspend.

O PWM1[1] — Pulse Width Modulator 1, channel 1 output.

I T1_CAP0 — Capture input for Timer 1, channel 0.

- R — Function reserved.

I/O SSP1_MISO — Master In Slave Out for SSP1.

Table 3. Pin description

…continued

Not all functions are available on all parts. See Table 2 (Ethernet, USB, LCD, QEI, SD/MMC, DAC pins) and Table 7 (EMC

pins).

Symbol

Pin LQFP208

Ball TFBGA208

Ball TFBGA180

Pin LQFP144

Reset state

[1]

Type

[2]

Description

Objective data sheet Rev. 2 — 27 May 2011 19 of 117

NXP Semiconductors

LPC178x/7x

32-bit ARM Cortex-M3 microcontroller

P1[19] 68 U6 P5 47

[3]

I/O P1[19] — General purpose digital input/output pin.

O USB_TX_E1

— Transmit Enable signal for USB port 1 (OTG

transceiver).

O USB_PPWR1

— Port Power enable signal for USB port 1.

I T1_CAP1 — Capture input for Timer 1, channel 1.

O MC_0A — Motor control PWM channel 0, output A.

I/O SSP1_SCK — Serial clock for SSP1.

O U2_OE — RS-485/EIA-485 output enable signal for UART2.

P1[20] 70 U7 K6 49

[3]

I/O P1[20] — General purpose digital input/output pin.

O USB_TX_DP1 — D+ transmit data for USB port 1 (OTG

transceiver).

O PWM1[2] — Pulse Width Modulator 1, channel 2 output.

I QEI_PHA — Quadrature Encoder Interface PHA input.

I MC_FB0 — Motor control PWM channel 0 feedback input.

I/O SSP0_SCK — Serial clock for SSP0.

O LCD_VD[6] — LCD data.

O LCD_VD[10] — LCD data.

P1[21] 72 R8 N6 50

[3]

I/O P1[21] — General purpose digital input/output pin.

O USB_TX_DM1 — D transmit data for USB port 1 (OTG

transceiver).

O PWM1[3] — Pulse Width Modulator 1, channel 3 output.

I/O SSP0_SSEL — Slave Select for SSP0.

I MC_ABORT

— Motor control PWM, active low fast abort.

- R — Function reserved.

O LCD_VD[7] — LCD data.

O LCD_VD[11] — LCD data.

P1[22] 74 U8 M6 51

[3]

I/O P1[22] — General purpose digital input/output pin.

I USB_RCV1 — Differential receive data for USB port 1 (OTG

transceiver).

I USB_PWRD1 — Power Status for USB port 1 (host power

switch).

O T1_MAT0 — Match output for Timer 1, channel 0.

O MC_0B — Motor control PWM channel 0, output B.

I/O SSP1_MOSI — Master Out Slave In for SSP1.

O LCD_VD[8] — LCD data.

O LCD_VD[12] — LCD data.

Table 3. Pin description

…continued

Not all functions are available on all parts. See Table 2 (Ethernet, USB, LCD, QEI, SD/MMC, DAC pins) and Table 7 (EMC

pins).

Symbol

Pin LQFP208

Ball TFBGA208

Ball TFBGA180

Pin LQFP144

Reset state

[1]

Type

[2]

Description

Objective data sheet Rev. 2 — 27 May 2011 20 of 117

NXP Semiconductors

LPC178x/7x

32-bit ARM Cortex-M3 microcontroller

P1[23] 76 P9 N7 53

[3]

I/O P1[23] — General purpose digital input/output pin.

I USB_RX_DP1 — D+ receive data for USB port 1 (OTG

transceiver).

O PWM1[4] — Pulse Width Modulator 1, channel 4 output.

I QEI_PHB — Quadrature Encoder Interface PHB input.

I MC_FB1 — Motor control PWM channel 1 feedback input.

I/O SSP0_MISO — Master In Slave Out for SSP0.

O LCD_VD[9] — LCD data.

O LCD_VD[13] — LCD data.

P1[24] 78 T9 P7 54

[3]

I/O P1[24] — General purpose digital input/output pin.

I USB_RX_DM1 — D receive data for USB port 1 (OTG

transceiver).

O PWM1[5] — Pulse Width Modulator 1, channel 5 output.

I QEI_IDX — Quadrature Encoder Interface INDEX input.

I MC_FB2 — Motor control PWM channel 2 feedback input.

I/O SSP0_MOSI — Master Out Slave in for SSP0.

O LCD_VD[10] — LCD data.

O LCD_VD[14] — LCD data.

P1[25] 80 T10 L7 56

[3]

I/O P1[25] — General purpose digital input/output pin.

O USB_LS1

— Low Speed status for USB port 1 (OTG

transceiver).

O USB_HSTEN1

— Host Enabled status for USB port 1.

O T1_MAT1 — Match output for Timer 1, channel 1.

O MC_1A — Motor control PWM channel 1, output A.

O CLKOUT — Selectable clock output.

O LCD_VD[11] — LCD data.

O LCD_VD[15] — LCD data.

P1[26] 82 R10 P8 57

[3]

I/O P1[26] — General purpose digital input/output pin.

O USB_SSPND1

— USB port 1 Bus Suspend status (OTG

transceiver).

O PWM1[6] — Pulse Width Modulator 1, channel 6 output.

I T0_CAP0 — Capture input for Timer 0, channel 0.

O MC_1B — Motor control PWM channel 1, output B.

I/O SSP1_SSEL — Slave Select for SSP1.

O LCD_VD[12] — LCD data.

O LCD_VD[20] — LCD data.

Table 3. Pin description

…continued

Not all functions are available on all parts. See Table 2 (Ethernet, USB, LCD, QEI, SD/MMC, DAC pins) and Table 7 (EMC

pins).

Symbol

Pin LQFP208

Ball TFBGA208

Ball TFBGA180

Pin LQFP144

Reset state

[1]

Type

[2]

Description

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