P89LPC952FA datasheet(9/69 Pages) NXP

Part #	P89LPC952FA

Description	8-bit microcontroller with accelerated two-clock 80C51 core 8 kB/16 kB 3 V byte-erasable flash with 10-bit ADC

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Manufacturer	NXP [NXP Semiconductors]

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P89LPC952_954_4

Product data sheet

Rev. 04 — 24 July 2008

9 of 69

NXP Semiconductors

P89LPC952/954

8-bit microcontroller with 10-bit ADC

6.2 Pin description

Table 3.

Pin description

Symbol

Type Description

LQFP48

PLCC44

LQFP44

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 7.13.1 “Port conﬁgurations”

and Table 11 “Static 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:

P0.0/CMP2/

KBI0/AD05

40

43

37

I/O

P0.0 — Port 0 bit 0.

O

CMP2 — Comparator 2 output.

I

KBI0 — Keyboard input 0.

I

AD05 — ADC0 channel 5 analog input.

P0.1/CIN2B/

KBI1/AD00

39

42

36

I/O

P0.1 — Port 0 bit 1.

I

CIN2B — Comparator 2 positive input B.

I

KBI1 — Keyboard input 1.

I

AD00 — ADC0 channel 0 analog input.

P0.2/CIN2A/

KBI2/AD01

38

41

35

I/O

P0.2 — Port 0 bit 2.

I

CIN2A — Comparator 2 positive input A.

I

KBI2 — Keyboard input 2.

I

AD01 — ADC0 channel 1 analog input.

P0.3/CIN1B/

KBI3/AD02

37

40

34

I/O

P0.3 — Port 0 bit 3.

I

CIN1B — Comparator 1 positive input B.

I

KBI3 — Keyboard input 3.

I

AD02 — ADC0 channel 2 analog input.

P0.4/CIN1A/

KBI4/AD03

36

39

33

I/O

P0.4 — Port 0 bit 4.

I

CIN1A — Comparator 1 positive input A.

I

KBI4 — Keyboard input 4.

I

AD03 — ADC0 channel 3 analog input.

P0.5/CMPREF/

KBI5

35

38

32

I/O

P0.5 — Port 0 bit 5.

I

CMPREF — Comparator reference (negative) input.

I

KBI5 — Keyboard input 5.

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