AT89C2051-12SA View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT89C2051-12SA

8-bit microcontroller with 2Kbytes flash, 2.7V to 6.0V

Atmel Corporation 

AT89C2051

Absolute Maximum Ratings*

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

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

*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.

DC Characteristics

TA = -40°C to 85°C, VCC = 2.0V to 6.0V (unless otherwise noted)

Symbol

Parameter

Condition

Min

Max

Units

VIL

Input Low Voltage

VIH

Input High Voltage

VIH1

Input High Voltage

VOL

Output Low Voltage(1)

(Ports 1, 3)

(Except XTAL1, RST)

(XTAL1, RST)

IOL = 20 mA, VCC = 5V

IOL = 10 mA, VCC = 2.7V

-0.5

0.2 VCC - 0.1

V

0.2 VCC + 0.9 VCC + 0.5

V

0.7 VCC

VCC + 0.5

V

0.5

V

VOH

Output High Voltage

(Ports 1, 3)

IIL

Logical 0 Input Current

(Ports 1, 3)

IOH = -80 µA, VCC = 5V ± 10%

IOH = -30 µA

IOH = -12 µA

VIN = 0.45V

2.4

V

0.75 VCC

V

0.9 VCC

V

-50

µA

ITL

Logical 1 to 0 Transition Current VIN = 2V, VCC = 5V ± 10%

(Ports 1, 3)

-750

µA

ILI

Input Leakage Current

0 < VIN < VCC

(Port P1.0, P1.1)

±10

µA

VOS

Comparator Input Offset Voltage VCC = 5V

VCM

Comparator Input Common

Mode Voltage

20

mV

0

VCC

V

RRST

Reset Pulldown Resistor

50

300

KΩ

CIO

ICC

Notes:

Pin Capacitance

Test Freq. = 1 MHz, TA = 25°C

10

pF

Power Supply Current

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

15/5.5

mA

Power Down Mode(2)

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

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

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

5/1

mA

100

µA

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

20

µA

1. Under steady state (non-transient) conditions, IOL must be externally limited as follows:

Maximum IOL per port pin: 20 mA

Maximum total IOL for all output pins: 80 mA

If IOL 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 VCC for Power Down is 2V.

4-23

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