LPC2131 datasheet(18/41 Pages) PHILIPS

18 / 41 page

9397 750 14868

Preliminary data sheet

Rev. 02 — 15 April 2005

18 of 41

Philips Semiconductors

LPC2131/2132/2134/2136/2138

Single-chip 16/32-bit microcontrollers

6.8 Pin function select register 1 (PINSEL1 - 0xE002C004)

The PINSEL1 register controls the functions of the pins as per the settings listed in

Table 7. The direction control bit in the IODIR register is effective only when the GPIO

function is selected for a pin. For other functions direction is controlled automatically.

Settings other than those shown in Table 7 are reserved, and should not be used.

Table 7:

Pin function select register 1 (PINSEL1 - 0xE002C004)

PINSEL1

Pin Name

Value

Function

Value after reset

1:0

P0.16

GPIO Port 0.16

EINT0

Match 0.2 (Timer 0)

Capture 0.2 (Timer 0)

3:2

P0.17

GPIO Port 0.17

Capture 1.2 (Timer 1)

SCK (SSP)

Match 1.2 (Timer 1)

5:4

P0.18

GPIO Port 0.18

Capture 1.3 (Timer 1)

MISO (SSP)

Match 1.3 (Timer 1)

7:6

P0.19

GPIO Port 0.19

Match 1.2 (Timer 1)

MOSI (SSP)

Capture 1.2 (Timer 1)

9:8

P0.20

GPIO Port 0.20

Match 1.3 (Timer 1)

SSEL (SSP)

EINT3

11:10

P0.21

GPIO Port 0.21

PWM5

Reserved (LPC2131/32)

AD1.6 (LPC2134/36/38)

Capture 1.3 (Timer 1)

13:12

P0.22

GPIO Port 0.22

Reserved (LPC2131/32)

AD1.7 (LPC2134/36/38)

Capture 0.0 (Timer 0)

Match 0.0 (Timer 0)

15:14

P0.23

GPIO Port 0.23

Reserved

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