Datasheet

LPC2361_62 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 5.1 — 15 October 2013 12 of 65
NXP Semiconductors
LPC2361/62
Single-chip 16-bit/32-bit MCU
[1] 5 V tolerant pad providing digital I/O functions with TTL levels and hysteresis.
[2] 5 V tolerant pad providing digital I/O functions (with TTL levels and hysteresis) and analog input. When configured as a DAC input,
digital section of the pad is disabled.
P4[28]/MAT2[0]/
TXD3
82
[1]
I/O P4[28] — General purpose digital input/output pin.
O MAT2[0] — Match output for Timer 2, channel 0.
O TXD3 — Transmitter output for UART3.
P4[29]/MAT2[1]/
RXD3
85
[1]
I/O P4[29] — General purpose digital input/output pin.
O MAT2[1] — Match output for Timer 2, channel 1.
I RXD3 — Receiver input for UART3.
TDO 1
[1][7]
O TDO — Test Data out for JTAG interface.
TDI 2
[1][8]
I TDI — Test Data in for JTAG interface.
TMS 3
[1][8]
I TMS — Test Mode Select for JTAG interface.
TRST
4
[1][8]
I TRST — Test Reset for JTAG interface.
TCK 5
[1][7]
I TCK — Test Clock for JTAG interface. This clock must be slower than
1
⁄
6
of the
CPU clock (CCLK) for the JTAG interface to operate
RTCK 100
[1][8]
I/O RTCK — JTAG interface control signal.
Note: LOW on this pin while RESET
is LOW enables ETM pins (P2[9:0]) to
operate as trace port after reset.
RSTOUT
14 O RSTOUT — This is a 3.3 V pin. LOW on this pin indicates LPC2361/2362 being in
Reset state.
RESET
17
[9]
I 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
[10][11]
I Input to the oscillator circuit and internal clock generator circuits.
XTAL2 23
[10][11]
O Output from the oscillator amplifier.
RTCX1 16
[10][12]
I Input to the RTC oscillator circuit.
RTCX2 18
[10][12]
O Output from the RTC oscillator circuit.
V
SS
15, 31,
41, 55,
72, 97,
83
[13]
I ground: 0 V reference.
V
SSA
11
[14]
I analog ground: 0 V reference. This should nominally be the same voltage as
V
SS
, but should be isolated to minimize noise and error.
V
DD(3V3)
28, 54,
71,
96
[15]
I 3.3 V supply voltage: This is the power supply voltage for the I/O ports.
V
DD(DCDC)(3V3)
13, 42,
84
[16]
I 3.3 V DC-to-DC converter supply voltage: This is the supply voltage for the
on-chip DC-to-DC converter only.
V
DDA
10
[17]
I analog 3.3 V pad supply voltage: This should be nominally the same voltage as
V
DD(3V3)
but should be isolated to minimize noise and error. This voltage is used to
power the ADC and DAC.
VREF 12
[17]
I ADC reference: This should be nominally the same voltage as V
DD(3V3)
but
should be isolated to minimize noise and error. Level on this pin is used as a
reference for ADC and DAC.
VBAT 19
[17]
I RTC power supply: 3.3 V on this pin supplies the power to the RTC peripheral.
Table 3. Pin description
…continued
Symbol Pin Type Description