P89LPC915FDH datasheet(13/72 Pages) PHILIPS

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Philips Semiconductors

P89LPC915/916/917

8-bit microcontrollers with accelerated two-clock 80C51 core

Product data

Rev. 04 — 17 December 2004

13 of 72

9397 750 14397

Table 5:

P89LPC917 pin description

Symbol

Type

Description

P0.0 to P0.5

I/O

Port 0: Port 0 is a 7-bit I/O port with user-conﬁgurable outputs. During reset Port 0

latches are conﬁgured in the input only mode with the internal pull-up disabled. The

operation of Port 0 pins as inputs and outputs depends upon the port conﬁguration

selected. Each port pin is conﬁgured independently. Refer to Section 9.12.1 “Port

conﬁgurations” and Table 13 “DC electrical characteristics” for details.

The Keypad Interrupt feature operates with Port 0 pins.

All pins have Schmitt triggered inputs.

Port 0 also provides various special functions as described below:

I/O

P0.0 — Port 0 bit 0.

CMP2 — Comparator 2 output.

KBI0 — Keyboard input 0.

I/O

P0.1 — Port 0 bit 1.

CIN2B — Comparator 2 positive input B.

KBI1 — Keyboard input 1.

AD10 — A/D channel 1, input 0

I/O

P0.2 — Port 0 bit 2.

CIN2A — Comparator 2 positive input A.

KBI2 — Keyboard input 2.

AD11 — A/D channel 1, input 1

I/O

P0.3 — Port 0 bit 3.

CIN1B — Comparator 1 positive input B.

KBI3 — Keyboard input 3.

AD12 — A/D channel 1, input 2.

I/O

P0.4 — Port 0 bit 4.

CIN1A — Comparator 1 positive input A.

KBI4 — Keyboard input 4.

AD13 — A/D channel 1, input 3.

DAC1 — Digital to analog converter 1 output.

I/O

P0.5 — Port 0 bit 5.

CMPREF — Comparator reference (negative) input.

KBI5 — Keyboard input 5.

CLKIN — External clock input.

I/O

P0.7 — Port 0 bit 7.

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

KBI7 — Keyboard input 7.

CLKOUT — Clock output.

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