P89LPC9381FDH datasheet(7/60 Pages) PHILIPS

7 / 60 page

P89LPC9381_1

Product data sheet

Rev. 01 — 8 September 2006

7 of 60

Philips Semiconductors

P89LPC9381

8-bit microcontroller with 10-bit ADC

P0[2]/CIN2A/

KBI2/AD01

I/O

P0[2] — Port 0 bit 2.

CIN2A — Comparator 2 positive input A.

KBI2 — Keyboard input 2.

AD01 — ADC0 channel 1 analog input.

P0[3]/CIN1B/

KBI3/AD02

I/O

P0[3] — Port 0 bit 3.

CIN1B — Comparator 1 positive input B.

KBI3 — Keyboard input 3.

AD02 — ADC0 channel 2 analog input.

P0[4]/CIN1A/

KBI4/AD03

I/O

P0[4] — Port 0 bit 4.

CIN1A — Comparator 1 positive input A.

KBI4 — Keyboard input 4.

AD03 — ADC0 channel 3 analog input.

P0[5]/CMPREF/

KBI5

I/O

P0[5] — Port 0 bit 5.

CMPREF — Comparator reference (negative) input.

KBI5 — Keyboard input 5.

P0[6]/CMP1/

KBI6

I/O

P0[6] — Port 0 bit 6.

CMP1 — Comparator 1 output.

KBI6 — Keyboard input 6.

P0[7]/T1/KBI7

I/O

P0[7] — Port 0 bit 7.

I/O

T1 — Timer/counter 1 external count input or overﬂow output.

KBI7 — Keyboard input 7.

P1[7:0]

I/O, I

[1]

Port 1: Port 1 is an 8-bit I/O port with a user-conﬁgurable output type, except for

three pins as noted below. During reset Port 1 latches are conﬁgured in the input

only mode with the internal pull-up disabled. The operation of the conﬁgurable

Port 1 pins as inputs and outputs depends upon the port conﬁguration selected.

Each of the conﬁgurable port pins are programmed independently. Refer to

Section 7.13.1 “Port conﬁgurations” and Table 10 “Static characteristics” for

details. P1[2] to P1[3] are open-drain when used as outputs. P1[5] is input only.

All pins have Schmitt triggered inputs.

Port 1 also provides various special functions as described below:

P1[0]/TXD

I/O

P1[0] — Port 1 bit 0.

TXD — Transmitter output for the serial port.

P1[1]/RXD

I/O

P1[1] — Port 1 bit 1.

RXD — Receiver input for the serial port.

P1[2]/T0/SCL

I/O

P1[2] — Port 1 bit 2 (open-drain when used as output).

I/O

T0 — Timer/counter 0 external count input or overﬂow output (open-drain when

used as output).

I/O

SCL — I2C-bus serial clock input/output.

P1[3]/INT0/SDA

I/O

P1[3] — Port 1 bit 3 (open-drain when used as output).

INT0 — External interrupt 0 input.

I/O

SDA — I2C-bus serial data input/output.

P1[4]/INT1

P1[4] — Port 1 bit 4.

INT1 — External interrupt 1 input.

Table 3.

Pin description …continued

Symbol

Type

Description

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