LPC178X datasheet(22/117 Pages) NXP

22 / 117 page

LPC178X_7X

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Objective data sheet

Rev. 2 — 27 May 2011

22 of 117

NXP Semiconductors

LPC178x/7x

32-bit ARM Cortex-M3 microcontroller

P1[31]

[5]

I/O

P1[31] — General purpose digital input/output pin.

USB_OVRCR2 — Over-Current status for USB port 2.

I/O

SSP1_SCK — Serial Clock for SSP1.

ADC0_IN[5] — A/D converter 0, input 5. When configured as an

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

I/O

I2C0_SCL — I2C0 clock input/output (this pin does not use a

specialized I2C pad.

P2[0] to

P2[31]

I/O

Port 2: Port 2 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.

P2[0]

154

B17

D12

107

[3]

I/O

P2[0] — General purpose digital input/output pin.

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

U1_TXD — Transmitter output for UART1.

R — Function reserved.

LCD_PWR — LCD panel power enable.

P2[1]

152

E14

C14

106

[3]

I/O

P2[1] — General purpose digital input/output pin.

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

U1_RXD — Receiver input for UART1.

R — Function reserved.

LCD_LE — Line end signal.

P2[2]

150

D15

E11

105

[3]

I/O

P2[2] — General purpose digital input/output pin.

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

U1_CTS — Clear to Send input for UART1.

T2_MAT3 — Match output for Timer 2, channel 3.

R — Function reserved.

TRACEDATA[3] — Trace data, bit 3.

R — Function reserved.

LCD_DCLK — LCD panel clock.

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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