Philips Semiconductors

Product specification

87L51FA/87L51FB

CMOS single-chip 3.0V 8-bit microcontrollers

1996 Aug 16

3-156

Table 1. External Pin Status During Idle and Power-Down Mode

MODE

PROGRAM

MEMORY

ALE

PSEN

PORT 0

PORT 1

PORT 2

PORT 3

Idle

Internal

1

1

Data

Data

Data

Data

Idle

External

1

1

Float

Data

Address

Data

Power-down

Internal

0

0

Data

Data

Data

Data

Power-down

External

0

0

Float

Data

Data

Data

PARAMETER

RATING

UNIT

Operating temperature under bias

0 to +70 or –40 to +85

°C

Storage temperature range

–65 to +150

°C

0 to +13.0

V

–0.5 to +6.5

V

15

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.

Electrical Deviations from Commercial Specifications for Extended Temperature Range

DC and AC parameters not included here are the same as in the commercial temperature range table.