12

0368G–MICRO–6/05

AT89C2051

Notes:

1. Under steady state (non-transient) conditions, I

Maximum I

Maximum total I

If I

than the listed test conditions.

2. Minimum V

16. Absolute Maximum Ratings*

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...................................................... 25.0 mA

17. DC Characteristics

T

Symbol

Parameter

Condition

Min

Max

Units

V

IL

Input Low-voltage

-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

(1)

(Ports 1, 3)

I

0.5

V

V

OH

Output High-voltage

(Ports 1, 3)

I

2.4

V

I

0.75 V

CC

V

V

I

IL

Logical 0 Input Current

(Ports 1, 3)

V

-50

µA

Logical 1 to 0 Transition Current

(Ports 1, 3)

-750

µA

I

LI

Input Leakage Current

(Port P1.0, P1.1)

0 < V

±10

µA

V

OS

Comparator Input Offset Voltage

V

20

mV

V

CM

Comparator Input Common

Mode Voltage

0V

CC

V

RRST

Reset Pull-down Resistor

50

300

k

Ω

C

IO

Pin Capacitance

Test Freq. = 1 MHz, T

10

pF

I

CC

Power Supply Current

15/5.5

mA

Idle Mode, 12 MHz, V

5/1

mA

Power-down Mode

(2)

V

100

µA

V

20

µA