AT89S53_00 datasheet(25/33 Pages) ATMEL

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AT89S53

Notes:

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

must be externally limited as follows:

Maximum I

OL per port pin: 10 mA

Maximum I

OL per 8-bit port:

Port 0: 26 mA

Ports 1,2, 3: 15 mA

Maximum total I

OL for all output pins: 71 mA

If I

OL exceeds the test condition, V

OL 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.

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...................................................... 15.0 mA

DC Characteristics

The values shown in this table are valid for TA = -40°C to 85°C and VCC = 4.0V to 6.0V, unless otherwise noted

Symbol

Parameter

Condition

Min

Max

Units

VIL

Input Low-voltage

(Except EA)-0.5

0.2 VCC - 0.1

IL1

Input Low-voltage (EA)-0.5

0.2 V

CC - 0.3

Input Hight-voltage

(Except XTAL1, RST)

0.2 V

CC + 0.9

CC + 0.5

VIH1

Input Hight-voltage

(XTAL1, RST)

0.7 VCC

VCC + 0.5

Output Low-voltage

(1)

(Ports 1,2,3)

OL = 1.6 mA

0.5

OL1

Output Low-voltage

(1)

(Port 0, ALE, PSEN)

OL = 3.2 mA

0.5

VOH

Output Hight-voltage

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

OH = -60 µA, VCC = 5V ± 10%

2.4

IOH = -25 µA0.75 VCC

OH = -10 µA0.9 VCC

VOH1

Output Hight-voltage

(Port 0 in External Bus Mode)

OH = -800 µA, VCC = 5V ± 10%

2.4

IOH = -300 µA0.75 VCC

OH = -80 µA0.9 VCC

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

IN = 0.45V

-50

µA

ITL

Logical 1 to 0 Transition Current (Ports 1,2,3)

VIN = 2V, VCC = 5V ± 10%

-650

µA

Input Leakage Current

(Port 0, EA)

0.45 < V

IN < VCC

±10

µA

RRST

Reset Pull-down Resistor

300

Ω

CIO

Pin Capacitance

Test Freq. = 1 MHz, TA = 25°C10

Power Supply Current

Active Mode, 12 MHz

Idle Mode, 12 MHz

6.5

Power-down Mode

(2)

VCC = 6V

100

µA

CC = 3V

µA

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