AT89C51AC3-RDTIM datasheet(121/140 Pages) ATMEL

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121

AT89C51AC3

4383D–8051–02/08

Electrical Characteristics

Absolute Maximum Ratings

DC Parameters for Standard Voltage

TA = -40°C to +85°C; VSS = 0V;

VCC =2.7V to 5.5V and F = 0 to 40 MHz (both internal and external code execution)

VCC =4.5V to 5.5V and F = 0 to 60 MHz (internal code execution only)

Ambiant Temperature Under Bias:

I = industrial ....................................................... -40°C to 85°C

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

Voltage on V

CC from VSS ......................................-0.5V to + 6V

Voltage on Any Pin from V

SS..................... -0.5V to VCC + 0.2V

Power Dissipation .............................................................. 1 W

Table 71. DC Parameters in Standard Voltage

Symbol

Parameter

Min

Typ(5)

Max

Unit

Test Conditions

VIL

Input Low Voltage

-0.5

0.2Vcc - 0.1

VIH

Input High Voltage except XTAL1, RST

0.2 VCC + 0.9

VCC + 0.5

VIH1

Input High Voltage, XTAL1, RST

0.7 VCC

VCC + 0.5

VOL

Output Low Voltage, ports 1, 2, 3 and 4(6)

0.3

0.45

1.0

IOL = 100 µA

(4)

IOL = 1.6 mA

(4)

IOL = 3.5 mA

(4)

VOL1

Output Low Voltage, port 0, ALE, PSEN (6)

0.3

0.45

1.0

IOL = 200 µA

(4)

IOL = 3.2 mA

(4)

IOL = 7.0 mA

(4)

VOH

Output High Voltage, ports 1, 2, 3, and 4

VCC - 0.3

VCC - 0.7

VCC - 1.5

IOH = -10 µA

IOH = -30 µA

IOH = -60 µA

VCC = 3V to 5.5V

VOH1

Output High Voltage, port 0, ALE, PSEN

VCC - 0.3

VCC - 0.7

VCC - 1.5

IOH = -200 µA

IOH = -3.2 mA

IOH = -7.0 mA

VCC = 5V ± 10%

RST

RST Pulldown Resistor

100

200

kΩ

Logical 0 Input Current ports 1, 2, 3 and 4

-50

Vin = 0.45V

Input Leakage Current

0.45V < Vin < V

ITL

Logical 1 to 0 Transition Current, ports 1, 2, 3

and 4

-650

Vin = 2.0V

Capacitance of I/O Buffer

Fc = 1 MHz

TA = 25°C

IPD

Power-down Current

150

3V < VCC < 5.5V

(3)

Note:

Stresses at or 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 other conditions above those indicated in

the operational sections of this specification is not implied.

Exposure to absolute maximum rating conditions may affect

device reliability.

The power dissipation is based on the maximum allowable

die temperature and the thermal resistance of the package.

AT89C51AC3-RDTIM 数据表(PDF) 121 Page - ATMEL Corporation

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