AT89C51

10

Absolute Maximum Ratings*

Notes:

Maximum I

Maximum I

Ports 1, 2, 3: 15 mA

Maximum total I

If I

than the listed test conditions.

2. Minimum V

Operating Temperature.................................. -55°C to +125°C

*NOTICE:

Stresses beyond those listed under “Absolute

Maximum Ratings” may cause permanent dam-

age to the device. This is a stress rating only and

functional operation of the device at these or any

other conditions beyond those indicated in the

operational sections of this specification is not

implied. Exposure to absolute maximum rating

conditions for extended periods may affect device

reliability.

Storage Temperature ..................................... -65°C to +150°C

Voltage on Any Pin

with Respect to Ground .....................................-1.0V to +7.0V

Maximum Operating Voltage ............................................ 6.6V

DC Output Current...................................................... 15.0 mA

DC Characteristics

Symbol

Parameter

Condition

Min

Max

Units

Input Low-voltage

(Except EA)

-0.5

V

V

IL1

Input Low-voltage (EA)

-0.5

0.2 V

V

V

IH

Input High-voltage

(Except XTAL1, RST)

0.2 V

V

V

Input High-voltage

(XTAL1, RST)

V

V

OL

Output Low-voltage

I

0.45

V

V

OL1

(Port 0, ALE, PSEN)

I

0.45

V

V

OH

Output High-voltage

(Ports 1,2,3, ALE, PSEN)

I

2.4

V

I

0.75 V

CC

V

V

V

OH1

Output High-voltage

(Port 0 in External Bus Mode)

I

2.4

V

I

V

V

I

IL

Logical 0 Input Current (Ports 1,2,3)

V

-50

µA

I

TL

Logical 1 to 0 Transition Current

(Ports 1,2,3)

V

-650

µA

I

LI

Input Leakage Current (Port 0, EA)0.45 < V

±10

µA

RRST

Reset Pull-down Resistor

50

300

K

Ω

Pin Capacitance

10

pF

I

CC

Power Supply Current

Active Mode, 12 MHz

20

mA

Idle Mode, 12 MHz

5

mA

Power-down Mode

(2)

V

100

µA

V

40

µA