LPC2364_66_68_2

© NXP B.V. 2007. All rights reserved.

Preliminary data sheet

Rev. 02 — 1 October 2007

12 of 47

NXP Semiconductors

LPC2364/66/68

Fast communication chip

[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.

[3]

5 V tolerant pad providing digital I/O with TTL levels and hysteresis and analog output function. When configured as the DAC output,

digital section of the pad is disabled.

[4]

[5]

Pad provides digital I/O and USB functions. It is designed in accordance with the

USB specification, revision 2.0 (Full-speed and

Low-speed mode only).

[6]

5 V tolerant pad with 5 ns glitch filter providing digital I/O functions with TTL levels and hysteresis

[7]

5 V tolerant pad with 20 ns glitch filter providing digital I/O function with TTL levels and hysteresis

[8]

Pad provides special analog functionality.

[9]

Pad provides special analog functionality.

[10] Pad provides special analog functionality.

[11] Pad provides special analog functionality.

[12] Pad provides special analog functionality.

[13] Pad provides special analog functionality.

RTCK

100[1]

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[1]

O

RSTOUT — This is a 1.8 V pin. LOW on this pin indicates LPC2364/66/68 being in

Reset state.

RESET

17[7]

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[8]

I

Input to the oscillator circuit and internal clock generator circuits.

XTAL2

23[8]

O

Output from the oscillator amplifier.

RTCX1

16[8]

I

Input to the RTC oscillator circuit.

RTCX2

18[8]

O

Output from the RTC oscillator circuit.

15, 31,

41, 55,

72, 97,

83[9]

I

ground: 0 V reference.

11[10]

I

but should be isolated to minimize noise and error.

28, 54,

71,

96[11]

I

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

13, 42,

84[12]

I

3.3 V DC-to-DC converter supply voltage: This is the supply voltage for the on-chip

DC-to-DC converter only.

10[13]

I

analog 3.3 V pad supply voltage: This should be nominally the same voltage as

power the ADC and DAC.

VREF

12[13]

I

isolated to minimize noise and error. Level on this pin is used as a reference for ADC

and DAC.

VBAT

19[13]

I

RTC power supply: 3.3 V on this pin supplies the power to the RTC.

Table 3.

Symbol

Pin

Type

Description