P89V660FBC datasheet(6/89 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_1

Product data sheet

Rev. 01 — 2 May 2007

6 of 89

NXP Semiconductors

P89V660/662/664

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

5.2 Pin description

Table 3.

Pin description

Symbol

Type

Description

TQFP44

PLCC44

P0[0] to P0[7]

I/O

Port 0: Port 0 is an 8-bit open-drain bidirectional I/O port.

Port 0 pins that have ‘1’s written to them ﬂoat, and in this state

can be used as high-impedance inputs. Port 0 is also the

multiplexed low-order address and data bus during accesses

to external code and data memory. In this application, it uses

strong internal pull-ups when making the transition to ‘1’s.

External pull-ups are required as a general purpose I/O port.

P0[0]/AD0

37

43

I/O

P0[0] — Port 0 bit 0.

I/O

AD0 — Address/data bit 0.

P0[1]/AD1

36

42

I/O

P0[1] — Port 0 bit 1.

I/O

AD1 — Address/data bit 1.

P0[2]/AD2

35

41

I/O

P0[2] — Port 0 bit 2.

I/O

AD2 — Address/data bit 2.

P0[3]/AD3

34

40

I/O

P0[3] — Port 0 bit 3.

I/O

AD3 — Address/data bit 3.

P0[4]/AD4

33

39

I/O

P0[4] — Port 0 bit 4.

I/O

AD4 — Address/data bit 4.

P0[5]/AD5

32

38

I/O

P0[5] — Port 0 bit 5.

I/O

AD5 — Address/data bit 5.

P0[6]/AD6

31

37

I/O

P0[6] — Port 0 bit 6.

I/O

AD6 — Address/data bit 6.

P0[7]/AD7

30

36

I/O

P0[7] — Port 0 bit 7.

I/O

AD7 — Address/data bit 7.

P1[0] to P1[7]

I/O with

internal

pull-up

Port 1: Port 1 is an 8-bit bidirectional I/O port with internal

pull-ups. The Port 1 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 1 pins that are externally

pulled LOW will source current (IIL) because of the internal

pull-ups. P1[5], P1[6], P1[7] have high current drive of 16 mA.

P1[0]/T2

40

2

I/O

P1[0] — Port 1 bit 0.

I

T2 — External count input to Timer/Counter 2 or Clock-out

from Timer/Counter 2

P1[1]/T2EX

41

3

I/O

P1[1] — Port 1 bit 1.

I

T2EX: Timer/Counter 2 capture/reload trigger and direction

control

P1[2]/ECI

42

4

I/O

P1[2] — Port 1 bit 2.

I

ECI — External clock input. This signal is the external clock

input for the PCA.

P1[3]/CEX0

43

5

I/O

P1[3] — Port 1 bit 3.

I/O

CEX0 — Capture/compare external I/O for PCA Module 0.

Each capture/compare module connects to a Port 1 pin for

external I/O. When not used by the PCA, this pin can handle

standard I/O.

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