P89LPC9201FDH datasheet(9/75 Pages) NXP

Part #	P89LPC9201FDH

Description	8-bit microcontroller with accelerated two-clock 80C51 core 2 kB/4 kB/8 kB 3 V byte-erasable flash with 8-bit ADC

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Manufacturer	NXP [NXP Semiconductors]

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P89LPC92X1

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Product data sheet

Rev. 2 — 1 December 2010

9 of 75

NXP Semiconductors

P89LPC9201/9211/922A1/9241/

8-bit microcontroller with 8-bit ADC

6.2 Pin description

Table 3.

Pin description

Symbol

Type Description

TSSOP20,

DIP20

P0.0 to P0.7

I/O

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

7.16.1 “Port configurations” and Table 12 “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/CMP2/

KBI0

1I/O

P0.0 — Port 0 bit 0.

O

CMP2 — Comparator 2 output

I

KBI0 — Keyboard input 0.

P0.1/CIN2B/

KBI1/AD10

20

I/O

P0.1 — Port 0 bit 1.

I

CIN2B — Comparator 2 positive input B.

I

KBI1 — Keyboard input 1.

I

AD10 — ADC1 channel 0 analog input. (P89LPC9241/9251)

P0.2/CIN2A/

KBI2/AD11

19

I/O

P0.2 — Port 0 bit 2.

I

CIN2A — Comparator 2 positive input A.

I

KBI2 — Keyboard input 2.

I

AD11 — ADC1 channel 1 analog input. (P89LPC9241/9251)

P0.3/CIN1B/

KBI3/AD12

18

I/O

P0.3 — Port 0 bit 3. High current source.

I

CIN1B — Comparator 1 positive input B.

I

KBI3 — Keyboard input 3.

I

AD12 — ADC1 channel 2 analog input. (P89LPC9241/9251)

P0.4/CIN1A/

KBI4/DAC1/AD13

17

I/O

P0.4 — Port 0 bit 4. High current source.

I

CIN1A — Comparator 1 positive input A.

I

KBI4 — Keyboard input 4.

O

DAC1 — Digital-to-analog converter output 1. (P89LPC9241/9251)

I

AD13 — ADC1 channel 3 analog input. (P89LPC9241/9251)

P0.5/CMPREF/

KBI5

16

I/O

P0.5 — Port 0 bit 5. High current source.

I

CMPREF — Comparator reference (negative) input.

I

KBI5 — Keyboard input 5.

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