Philips Semiconductors

Product specification

80C550/83C550/87C550

80C51 8-bit microcontroller family

4K/128 OTP/ROM/ROMless, 8 channel 8 bit A/D, watchdog timer

1998 May 01

16

PARAMETER

RATING

UNIT

Operating temperature under bias

–40 to +85

°C

Storage temperature range

–65 to +150

°C

0 to +13.0

V

–0.5 to +6.5

V

Input, output current on any two I/O pins

±10

mA

Power dissipation (based on package heat transfer limitations, not device power consumption)

1.5

W

NOTES:

1. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and

functional operation of the device at these or any conditions other than those described in the AC and DC Electrical Characteristics section

of this specification is not implied.

2. This product includes circuitry specifically designed for the protection of its internal devices from the damaging effects of excessive static

charge. Nonetheless, it is suggested that conventional precautions be taken to avoid applying greater than the rated maxima.

noted.

DC ELECTRICAL CHARACTERISTICS

TEST

LIMITS

SYMBOL

PARAMETER

CONDITIONS

MIN

MAX

UNIT

–0.5

V

0

V

V

V

Output low voltage, ports 2, 3

0.45

V

Output low voltage, port 0, ALE, PSEN

0.45

V

2.4

V

V

V

Output high voltage (port 0 in external bus mode)

2.4

V

V

V

–50

µA

See note 4

–650

µA

Input leakage current, port 0

+10

µA

Idle mode @ 16MHz

Power down mode

See note 6

11.5

1.3

3

25

5

50

mA

mA

µA

Internal reset pull-down resistor

50

300

k

Ω

Pin capacitance (I/O pins only)

10

pF

NOTES:

1. Typical ratings are not guaranteed. The values listed are at room temperature, 5V.

to external bus capacitance discharging into the port 0 and port 2 pins when these pins make 1-to-0 transitions during bus operations. In the

worst cases (capacitive loading > 100pF), the noise pulse on the ALE pin may exceed 0.8V. In such cases, it may be desirable to qualify

ALE with a Schmitt Trigger, or use an address latch with a Schmitt Trigger STROBE input.

address bits are stabilizing.

4. Pins of ports 2 and 3 source a transition current when they are being externally driven from 1 to 0. The transition current reaches its