LPC2194 datasheet(16/33 Pages) PHILIPS

16 / 33 page

Philips Semiconductors

LPC2194

Single-chip 16/32-bit microcontrollers

Preliminary data

Rev. 01 — 06 February 2004

16 of 33

9397 750 12757

6.9 Pin function select register 2 (PINSEL2 - 0xE002C014)

The PINSEL2 register controls the functions of the pins as per the settings listed in

Table 8. 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 the table are reserved, and should not be used.

6.10 General purpose parallel I/O

Device pins that are not connected to a speciﬁc peripheral function are controlled by

the GPIO registers. Pins may be dynamically conﬁgured as inputs or outputs.

Separate registers allow setting or clearing any number of outputs simultaneously.

The value of the output register may be read back, as well as the current state of the

port pins.

6.10.1

Features

• Direction control of individual bits.

• Separate control of output set and clear.

• All I/O default to inputs after reset.

27:26

P0.29

GPIO Port 0.29

AIN2 (A/D input 2)

Capture 0.3 (Timer0)

Match 0.3 (Timer0)

29:28

P0.30

GPIO Port 0.30

AIN3 (A/D input 0)

EINT3

Capture 0.0 (Timer0)

31:30

P0.31

Reserved

Table 7:

Pin function select register 1 (PINSEL1 - 0xE002C004)…continued

PINSEL1

Pin Name

Value

Function

Value after

Reset

Table 8:

Pin function select register 2 (PINSEL2 - 0xE002C014)

PINSEL2 bits

Description

Reset value

1:0

Reserved

When 0, pins P1.31:26 are GPIO pins. When 1,

P1.31:26 are used as Debug port.

When 0, pins P1.25:16 are used as GPIO pins. When

1, P1.25:16 are used as Trace port.

31:4

31:30

Reserved

LPC2194 датащи(PDF) 16 Page - NXP Semiconductors

LPC2194 датащи(HTML) 16 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

датащи скачать

ссылки URL