P89V660FBC datasheet(7/89 Pages) NXP

Part #	P89V660FBC

Description	8-bit 80C51 5 V low power 16 kB/32 kB/64 kB flash microcontroller with 512 B/1 kB/2 kB RAM, dual I2C-bus, SPI

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Manufacturer	NXP [NXP Semiconductors]

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P89V660_662_664_2

Product data sheet

Rev. 02 — 29 January 2008

7 of 89

NXP Semiconductors

P89V660/662/664

80C51 with 512 B/1 kB/2 kB RAM, dual I2C-bus, SPI

P1[4]/CEX1

44

6

I/O

P1[4] — Port 1 bit 4.

I/O

CEX1 — Capture/compare external I/O for PCA Module 1

P1[5]/CEX2

1

7

I/O

P1[5] — Port 1 bit 5.

I/O

CEX2 — Capture/compare external I/O for PCA Module 2

P1[6]/SCL

2

8

I/O

P1[6] — Port 1 bit 6.

I/O

SCL — I2C-bus serial clock input/output

P1[7]/SDA

3

9

I/O

P1[7] — Port 1 bit 7.

I/O

SDA — I2C-bus serial data input/output

P2[0] to P2[7]

I/O with

internal

pull-up

Port 2: Port 2 is an 8-bit bidirectional I/O port with internal

pull-ups. Port 2 pins are pulled HIGH by the internal pull-ups

when ‘1’s are written to them and can be used as inputs in this

state. As inputs, Port 2 pins that are externally pulled LOW will

source current (IIL) because of the internal pull-ups. Port 2

sends the high-order address byte during fetches from external

program memory and during accesses to external Data

Memory that use 16-bit address (MOVX@DPTR). In this

application, it uses strong internal pull-ups when making the

transition to ‘1’s.

P2[0]/A8

18

24

I/O

P2[0] — Port 2 bit 0.

O

A8 — Address bit 8.

P2[1]/A9

19

25

I/O

P2[1] — Port 2 bit 1.

O

A9 — Address bit 9.

P2[2]/A10

20

26

I/O

P2[2] — Port 2 bit 2.

O

A10 — Address bit 10.

P2[3]/A11

21

27

I/O

P2[3] — Port 2 bit 3.

O

A11 — Address bit 11.

P2[4]/A12

22

28

I/O

P2[4] — Port 2 bit 4.

O

A12 — Address bit 12.

P2[5]/A13

23

29

I/O

P2[5] — Port 2 bit 5.

O

A13 — Address bit 13.

P2[6]/A14

24

30

I/O

P2[6] — Port 2 bit 6.

O

A14 — Address bit 14.

P2[7]/A15

25

31

I/O

P2[7] — Port 2 bit 7.

O

A15 — Address bit 15.

P3[0] to P3[7]

I/O with

internal

pull-up

Port 3: Port 3 is an 8-bit bidirectional I/O port with internal

pull-ups. Port 3 pins are pulled HIGH by the internal pull-ups

when ‘1’s are written to them and can be used as inputs in this

state. As inputs, Port 3 pins that are externally pulled LOW will

source current (IIL) because of the internal pull-ups.

P3[0]/RXD

5

11

I

P3[0] — Port 3 bit 0.

I

RXD — Serial input port.

P3[1]/TXD

7

13

O

P3[1] — Port 3 bit 1.

O

TXD — Serial output port.

Table 3.

Pin description …continued

Symbol

Type

Description

TQFP44

PLCC44

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