LPC1765 datasheet(13/72 Pages) PHILIPS

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LPC1768_66_65_64_2

Objective data sheet

Rev. 02 — 11 February 2009

13 of 72

NXP Semiconductors

LPC1768/66/65/64

32-bit ARM Cortex-M3 microcontroller

P3[26]/STCLK/

MAT0[1]/PWM1[3]

26[1]

I/O

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

STCLK — System tick timer clock input.

MAT0[1] — Match output for Timer 0, channel 1.

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

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. Pins 0 through 27, 30, and 31 of this port are not available.

P4[28]/RX_MCLK/

MAT2[0]/TXD3

82[1]

I/O

P4[28] — General purpose digital input/output pin.

RX_MCLK — I2S receive master clock. (LPC1768/66/65 only).

MAT2[0] — Match output for Timer 2, channel 0.

TXD3 — Transmitter output for UART3.

P4[29]/TX_MCLK/

MAT2[1]/RXD3

85[1]

I/O

P4[29] — General purpose digital input/output pin.

TX_MCLK — I2S transmit master clock. (LPC1768/66/65 only).

MAT2[1] — Match output for Timer 2, channel 1.

RXD3 — Receiver input for UART3.

TDO/SWO

1[1]

TDO — Test Data out for JTAG interface.

SWO — Serial wire trace output.

TDI

2[1]

TDI — Test Data in for JTAG interface.

TMS/SWDIO

3[1]

TMS — Test Mode Select for JTAG interface.

I/O

SWDIO — Serial wire debug data input/output.

TRST

4[1]

TRST — Test Reset for JTAG interface.

TCK/SWDCLK

5[1]

TCK — Test Clock for JTAG interface.

SWDCLK — Serial wire clock.

RTCK

100[1]

I/O

RTCK — JTAG interface control signal.

RSTOUT

RSTOUT — This is a 3.3 V pin. LOW on this pin indicates LPC1768/66/65/64

being in Reset state.

RESET

17[7]

External reset input: A LOW on this pin resets the device, causing I/O ports and

peripherals to take on their default states, and processor execution to begin at

address 0. TTL with hysteresis, 5 V tolerant.

XTAL1

22[8]

Input to the oscillator circuit and internal clock generator circuits.

XTAL2

23[8]

Output from the oscillator ampliﬁer.

RTCX1

16[8]

Input to the RTC oscillator circuit.

RTCX2

18[8]

Output from the RTC oscillator circuit.

VSS

31, 41,

55, 72,

97, 83[8]

ground: 0 V reference.

VSSA

11[8]

analog ground: 0 V reference. This should nominally be the same voltage as VSS,

but should be isolated to minimize noise and error.

VDD(3V3)

28, 54,

71, 96[8]

3.3 V supply voltage: This is the power supply voltage for the I/O ports.

VDD(REG)(3V3)

42, 84[8]

3.3 V voltage regulator supply voltage: This is the supply voltage for the on-chip

voltage regulator only.

Table 3.

Pin description …continued

Symbol

Type

Description

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