LPC178X datasheet(15/120 Pages) NXP

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LPC178X_7X

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Preliminary data sheet

Rev. 4 — 1 May 2012

15 of 120

NXP Semiconductors

LPC178x/7x

32-bit ARM Cortex-M3 microcontroller

P0[25]

[5]

I/O

P0[25] — General purpose digital input/output pin.

ADC0_IN[2] — A/D converter 0, input 2. When configured as an

ADC input, the digital function of the pin must be disabled.

I/O

I2S_RX_SDA — Receive data. It is driven by the transmitter

and read by the receiver. Corresponds to the signal SD in the

I2S-bus specification.

U3_TXD — Transmitter output for UART3.

P0[26]

[7]

I/O

P0[26] — General purpose digital input/output pin.

ADC0_IN[3] — A/D converter 0, input 3. When configured as an

ADC input, the digital function of the pin must be disabled.

DAC_OUT — D/A converter output. When configured as the

DAC output, the digital function of the pin must be disabled.

U3_RXD — Receiver input for UART3.

P0[27]

[8]

I/O

P0[27] — General purpose digital input/output pin.

I/O

I2C0_SDA — I2C0 data input/output. (This pin uses a

specialized I2C pad).

I/O

USB_SDA1 — I2C serial data for communication with an

external USB transceiver.

P0[28]

[8]

I/O

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

I/O

I2C0_SCL — I2C0 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]

[9]

I/O

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

I/O

USB_D+1 — USB port 1 bidirectional D+ line.

EINT0 — External interrupt 0 input.

P0[30]

[9]

I/O

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

I/O

USB_D

1 — USB port 1 bidirectional D line.

EINT1 — External interrupt 1 input.

P0[31]

[9]

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

136

[3]

I/O

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

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

R — Function reserved.

T3_CAP1 — Capture input for Timer 3, channel 1.

I/O

SSP2_SCK — Serial clock for SSP2.

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

Description

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