LPC1786 datasheet(21/120 Pages) NXP

21 / 120 page

LPC178X_7X

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Preliminary data sheet

Rev. 4 — 1 May 2012

21 of 120

NXP Semiconductors

LPC178x/7x

32-bit ARM Cortex-M3 microcontroller

P1[29]

U14

N10

[3]

I/O

P1[29] — General purpose digital input/output pin.

I/O

USB_SDA1 — USB port 1 I2C serial data (OTG transceiver).

PWM1_CAP1 — Capture input for PWM1, channel 1.

T0_MAT1 — Match output for Timer 0, channel 1.

MC_2B — Motor control PWM channel 2, output B.

U4_TXD — Transmitter output for USART4 (input/output in

smart card mode).

LCD_VD[15] — LCD data.

LCD_VD[23] — LCD data.

P1[30]

[5]

I/O

P1[30] — General purpose digital input/output pin.

USB_PWRD2 — Power Status for USB port 2.

USB_VBUS — Monitors the presence of USB bus power.

This signal must be HIGH for USB reset to occur.

ADC0_IN[4] — A/D converter 0, input 4. When configured as an

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

I/O

I2C0_SDA — I2C0 data input/output (this pin does not use a

specialized I2C pad.

U3_OE — RS-485/EIA-485 output enable signal for UART3.

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.

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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