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SZF2002

Low voltage 8-bit microcontroller with 6-kbyte embedded RAM

Philips Electronics 

Philips Semiconductors

Low voltage 8-bit microcontroller with

6-kbyte embedded RAM

Product specification

SZF2002

SYMBOL

I/O Ports

P1.0/INT2/T2

P1.1/INT3/T2EX

P1.2/INT4

P1.3/INT5

P1.4/INT6

P1.5/INT7

P1.6/INT8/SCL

P1.7/SDA

P3.0/RXD

P3.1/TXD

P3.2/INT0

P3.3/INT1

P3.4/T0

P3.5/T1

P3.6

P3.7

P4.0/RAMCE

P4.1

P4.2

P4.3

P4.4

P4.5

P4.6

P4.7

ADC interface

ADC0

ADC1

ADC2

ADC3

ADC4

ADC5

PIN

DESCRIPTION

29 Port 1 (P1.0 to P1.7). 8-bit bidirectional I/O port with internal pull-ups; INT2 to INT8:

28 external interrupt inputs; T2: Timer T2 I/O; T2EX: Timer 2 external input; SCL:

27

I2C-bus interface clock; SDA: I2C-bus interface data.

26 Port 1 pins that have logic 1s written to them are pulled HIGH by the internal pull-ups,

25

and in that state can be used as inputs (note P1.6 and P1.7 are open-drain only).

As inputs, Port 1 pins that are externally pulled LOW will source current

24

(IIL, see Chapter 25) due to the internal pull-ups.

23

22

19 Port 3 (P3.0 to P3.7). 8-bit bidirectional I/O port with internal pull-ups; RXD: serial

18 port receiver data input (asynchronous); TXD: serial port transmitter data output

17

(asynchronous); INT0: external interrupt 0; INT1: external interrupt 1;

T0: Timer 0 external input; T1: Timer 1 external input.

16

15

Port 3 pins that have logic 1s written to them are pulled HIGH by the internal pull-ups,

and in that state can be used as inputs. As inputs, Port 3 pins that are externally pulled

14 LOW will source current (IIL, see Chapter 25) due to the internal pull-ups.

13

12

49 Port 4 (P4.0 to P4.7). 8-bit bidirectional I/O port; RAMCE chip enable for external

48 RAM.

47 Port 4 pins that have logic 1s written to them are pulled HIGH by the internal pull-ups,

46 and in that state can be used as inputs. As inputs, Port 4 pins that are externally pulled

45

LOW will source current (IIL, see Chapter 25) due to the internal pull-ups.

44

43

42

37 Input channels to the ADC.

36

35

34

33

32

1998 Aug 26

8

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