LPC178X datasheet(29/120 Pages) NXP

29 / 120 page

LPC178X_7X

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Preliminary data sheet

Rev. 4 — 1 May 2012

29 of 120

NXP Semiconductors

LPC178x/7x

32-bit ARM Cortex-M3 microcontroller

P3[25]

[3]

I/O

P3[25] — General purpose digital input/output pin.

I/O

EMC_D[25] — External memory data line 25.

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

T0_MAT0 — Match output for Timer 0, channel 0.

P3[26]

[3]

I/O

P3[26] — General purpose digital input/output pin.

I/O

EMC_D[26] — External memory data line 26.

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

T0_MAT1 — Match output for Timer 0, channel 1.

STCLK — System tick timer clock input.

P3[27]

203

[3]

I/O

P3[27] — General purpose digital input/output pin.

I/O

EMC_D[27] — External memory data line 27.

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

T1_CAP0 — Capture input for Timer 1, channel 0.

P3[28]

[3]

I/O

P3[28] — General purpose digital input/output pin.

I/O

EMC_D[28] — External memory data line 28.

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

T1_CAP1 — Capture input for Timer 1, channel 1.

P3[29]

[3]

I/O

P3[29] — General purpose digital input/output pin.

I/O

EMC_D[29] — External memory data line 29.

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

T1_MAT0 — Match output for Timer 1, channel 0.

P3[30]

[3]

I/O

P3[30] — General purpose digital input/output pin.

I/O

EMC_D[30] — External memory data line 30.

U1_RTS — Request to Send output for UART1. Can also be

configured to be an RS-485/EIA-485 output enable signal for

UART1.

T1_MAT1 — Match output for Timer 1, channel 1.

P3[31]

[3]

I/O

P3[31] — General purpose digital input/output pin.

I/O

EMC_D[31] — External memory data line 31.

R — Function reserved.

T1_MAT2 — Match output for Timer 1, channel 2.

P4[0] to

P4[31]

I/O

Port 4: Port 4 is a 32-bit I/O port with individual direction

controls for each bit. The operation of port 4 pins depends upon

the pin function selected via the pin connect block.

P4[0]

[3]

I/O

P4[0] — General purpose digital input/output pin.

I/O

EMC_A[0] — External memory address line 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

Description

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