LPC2292 datasheet(10/40 Pages) PHILIPS

10 / 40 page

Philips Semiconductors

LPC2292/LPC2294

16/32-bit ARM microcontrollers with external memory interface

Preliminary data

Rev. 01 — 05 February 2004

10 of 40

9397 750 12748

P3.20

A20 — External memory address line 20.

P3.21

A21 — External memory address line 21.

P3.22

A22 — External memory address line 22.

P3.23

I/O

A23 — External memory address line 23.

XCLK — Clock output.

P3.24

CS3 — Low-active Chip Select 3 signal.

(Bank 3 addresses range 8300 0000 - 83FF FFFF)

P3.25

CS2 — Low-active Chip Select 2signal.

(Bank 2 addresses range 8200 0000 - 82FF FFFF)

P3.26

CS1 — Low-active Chip Select 1 signal.

(Bank 1 addresses range 8100 0000 - 81FF FFFF)

P3.27

WE — Low-active Write enable signal.

P3.28

BLS3 — Low-active Byte Lane Select signal (Bank 3).

AIN7 — A/D converter, input 7. This analog input is always connected to its

pin.

P3.29

BLS2 — Low-active Byte Lane Select signal (Bank 2).

AIN6 — A/D converter, input 6. This analog input is always connected to its

pin.

P3.30

BLS1 — Low-active Byte Lane Select signal (Bank 1).

P3.31

BLS0 — Low-active Byte Lane Select signal (Bank 0).

TD1

TD1: CAN1 transmitter output.

RESET

135

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

142

Input to the oscillator circuit and internal clock generator circuits.

XTAL2

141

Output from the oscillator ampliﬁer.

VSS

3, 9, 26, 38,

54, 67, 79,

93, 103, 107,

111, 128

Ground: 0 V reference.

VSSA

139

Analog Ground: 0 V reference. This should nominally be the same voltage

as VSS, but should be isolated to minimize noise and error.

VSSA_PLL

138

PLL Analog Ground: 0 V reference. This should nominally be the same

voltage as VSS, but should be isolated to minimize noise and error.

V18

37, 110

1.8 V Core Power Supply: This is the power supply voltage for internal

circuitry.

V18A

143

Analog 1.8 V Core Power Supply: This is the power supply voltage for

internal circuitry. This should be nominally the same voltage as V18 but should

be isolated to minimize noise and error.

2, 31, 39, 51,

57, 77, 94,

104, 112, 119

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

V3A

Analog 3.3 V Pad Power Supply: This should be nominally the same voltage

as V3 but should be isolated to minimize noise and error.

Table 3:

Pin description…continued

Symbol

Type

Description

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