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89LPC933

8-bit microcontroller with accelerated two-clock 80C51 core 4 kB/8 kB/16 kB 3 V byte-erasable flash with 8-bit ADCs

NXP Semiconductors. 

NXP Semiconductors

P89LPC933/934/935/936

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

6.2 Pin description

Table 4. Pin description

Symbol

Pin

Type

TSSOP28, HVQFN28

PLCC28

P0.0 to P0.7

I/O

P0.0/CMP2/ 3

KBI0/AD01

27

I/O

O

I

I

P0.1/CIN2B/ 26

22

I/O

KBI1/AD10

I

I

I

P0.2/CIN2A/ 25

21

I/O

KBI2/AD11

I

I

I

P0.3/CIN1B/ 24

20

I/O

KBI3/AD12

I

I

I

P0.4/CIN1A/ 23

19

I/O

KBI4/DAC1/

I

AD13

I

O

I

P0.5/

22

18

I/O

CMPREF/

I

KBI5

I

P0.6/CMP1/ 20

16

I/O

KBI6

O

I

P0.7/T1/

19

15

I/O

KBI7

I/O

I

Description

Port 0: Port 0 is an 8-bit I/O port with a user-configurable output type.

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 8.13.1 “Port configurations”

and Table 11 “Static characteristics” for details.

The Keypad Interrupt feature operates with Port 0 pins.

All pins have Schmitt trigger inputs.

Port 0 also provides various special functions as described below:

P0.0 — Port 0 bit 0.

CMP2 — Comparator 2 output.

KBI0 — Keyboard input 0.

AD01 — ADC0 channel 1 analog input. (P89LPC935/936)

P0.1 — Port 0 bit 1.

CIN2B — Comparator 2 positive input B.

KBI1 — Keyboard input 1.

AD10 — ADC1 channel 0 analog input.

P0.2 — Port 0 bit 2.

CIN2A — Comparator 2 positive input A.

KBI2 — Keyboard input 2.

AD11 — ADC1 channel 1 analog input.

P0.3 — Port 0 bit 3.

CIN1B — Comparator 1 positive input B.

KBI3 — Keyboard input 3.

AD12 — ADC1 channel 2 analog input.

P0.4 — Port 0 bit 4.

CIN1A — Comparator 1 positive input A.

KBI4 — Keyboard input 4.

DAC1 — Digital-to-analog converter output 1.

AD13 — ADC1 channel 3 analog input.

P0.5 — Port 0 bit 5.

CMPREF — Comparator reference (negative) input.

KBI5 — Keyboard input 5.

P0.6 — Port 0 bit 6.

CMP1 — Comparator 1 output.

KBI6 — Keyboard input 6.

P0.7 — Port 0 bit 7.

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

KBI7 — Keyboard input 7.

P89LPC933_934_935_936

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 8 — 12 January 2011

© NXP B.V. 2011. All rights reserved.

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