P89LPC915FDH datasheet(13/75 Pages) NXP

13 / 75 page

P89LPC915_916_917_5

Product data sheet

Rev. 05 — 15 December 2009

13 of 75

NXP Semiconductors

P89LPC915/916/917

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

P0.1/CIN2B/KBI1/AD10

I/O

P0.1 — Port 0 bit 1.

CIN2B — Comparator 2 positive input B.

KBI1 — Keyboard input 1.

AD10 — ADC1 channel 0 analog input.

P0.2/CIN2A/KBI2/AD11

I/O

P0.2 — Port 0 bit 2.

CIN2A — Comparator 2 positive input A.

KBI2 — Keyboard input 2.

AD11 — ADC1 channel 1 analog input.

P0.3/CIN1B/KBI3/AD12

I/O

P0.3 — Port 0 bit 3.

CIN1B — Comparator 1 positive input B.

KBI3 — Keyboard input 3.

AD12 — ADC1 channel 2 analog input.

P0.4/CIN1A/KBI4/AD13/DAC1 14

I/O

P0.4 — Port 0 bit 4.

CIN1A — Comparator 1 positive input A.

KBI4 — Keyboard input 4.

AD13 — ADC1 channel 3 analog input.

DAC1 — DAC1 analog output.

P0.5/CMPREF/KBI5/CLKIN

I/O

P0.5 — Port 0 bit 5.

CMPREF — Comparator reference (negative) input.

KBI5 — Keyboard input 5.

CLKIN — External clock input.

P1.0 to P1.5

I/O, I

[1]

Port 1: Port 1 is an 6-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 8.13.1 “Port

conﬁgurations” and Table 15 “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 serial port.

P1.1/RXD

I/O

P1.1 — Port 1 bit 1.

RXD — Receiver input for 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 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 serial data input/output.

P1.5/RST

P1.5 — Port 1 bit 5 (input only).

Table 5.

P89LPC916 pin description …continued

Symbol

Type Description

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