1996 Nov 20

6

Philips Semiconductors

Product specification

Telecom microcontrollers

PCF84C21A; PCF84C41A;

PCF84C81A

8

ROM MASK OPTIONS

9

HANDLING

Inputs and outputs are protected against electrostatic discharge in normal handling. However, it is good practice to take

normal precautions appropriate to handling MOS devices. See

“Data Handbook IC14, Section: Handling MOS devices”.

10 LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

ROM CODE

OPTION

Program/data

Any mix of instructions and data up to ROM size of

2 kbytes for the PCF84C21A, 4 kbytes for the

PCF84C41A and 8 kbytes for the PCF84C81A.

Port Output

P0.0 to P0.7

standard

open-drain

push-pull

P1.0 to P1.7

standard

open-drain

push-pull

P2.0 to P2.2

standard

open-drain

push-pull

SDA/P2.3

−

open-drain

−

Port State after reset

P0.0 to P0.7

set

reset

−

P1.0 to P1.7

set

reset

−

P2.0 to P2.2

set

reset

−

SDA/P2.3

set

−−

Oscillator

Transconductance

SYMBOL

PARAMETER

MIN.

MAX.

UNIT

supply voltage

−0.5

+7

V

all input voltages

−0.5

V

DC input current

−10

+10

mA

DC output current except Port 1 output LOW

−10

+10

mA

DC output current, Port 1 output LOW

−10

+20

mA

total power dissipation

−

125

mW

power dissipation per output

−

30

mW

supply current

−50

+50

mA

ground supply current

−100

+50

mA

storage temperature range

−55

+150

°C

operating junction temperature

−

90

°C