AT89C2051-24SU datasheet(12/20 Pages) ATMEL | 8-bit Microcontroller with 2K Bytes Flash

Part No.	AT89C2051-24SU

Description	8-bit Microcontroller with 2K Bytes Flash

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Manufacturer	ATMEL [ATMEL Corporation]

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12

0368G–MICRO–6/05

AT89C2051

Notes:

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

OL must be externally limited as follows:

Maximum I

OL per port pin: 20 mA

Maximum total I

OL for all output pins: 80 mA

If I

OL exceeds the test condition, VOL may exceed the related specification. Pins are not guaranteed to sink current greater

than the listed test conditions.

2. Minimum V

CC for Power-down is 2V.

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

A = -40°C to 85°C, VCC = 2.7V to 6.0V (unless otherwise noted)

Symbol

Parameter

Condition

Min

Max

Units

V

IL

Input Low-voltage

-0.5

0.2 V

CC - 0.1

V

IH

Input High-voltage

(Except XTAL1, RST)

0.2 V

CC + 0.9

V

CC + 0.5

V

VIH1

Input High-voltage

(XTAL1, RST)

0.7 VCC

VCC + 0.5

V

OL

Output Low-voltage

(1)

(Ports 1, 3)

IOL = 20 mA, VCC = 5V

I

OL = 10 mA, VCC = 2.7V

0.5

V

OH

Output High-voltage

(Ports 1, 3)

I

OH = -80 µA, VCC = 5V ± 10%

2.4

V

I

OH = -30 µA

0.75 V

CC

V

IOH = -12 µA

0.9 VCC

V

I

IL

Logical 0 Input Current

(Ports 1, 3)

V

IN = 0.45V

-50

µA

ITL

Logical 1 to 0 Transition Current

(Ports 1, 3)

VIN = 2V, VCC = 5V ± 10%

-750

µA

I

LI

Input Leakage Current

(Port P1.0, P1.1)

0 < V

IN < VCC

±10

µA

V

OS

Comparator Input Offset Voltage

V

CC = 5V

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

A = 25°C

10

pF

I

CC

Power Supply Current

Active Mode, 12 MHz, VCC = 6V/3V

15/5.5

mA

Idle Mode, 12 MHz, V

CC = 6V/3V

P1.0 & P1.1 = 0V or VCC

5/1

mA

Power-down Mode

(2)

V

CC = 6V, P1.0 & P1.1 = 0V or VCC

100

µA

V

CC = 3V, P1.0 & P1.1 = 0V or VCC

20

µA

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AT89C2051-24SU Datasheet(PDF) 12 Page - ATMEL Corporation

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