AT89C51-20JC 데이터 시트보기 (PDF) - Atmel Corporation
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AT89C51-20JC Datasheet PDF : 15 Pages
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AT89C51
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...................................................... 15.0 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 = 5.0V ± 20% (unless otherwise noted)
Symbol
Parameter
Condition
Min
Max
Units
VIL
VIL1
VIH
VIH1
VOL
VOL1
Input Low Voltage
Input Low Voltage (EA)
Input High Voltage
Input High Voltage
Output Low Voltage(1) (Ports 1,2,3)
Output Low Voltage(1)
(Port 0, ALE, PSEN)
(Except EA)
(Except XTAL1, RST)
(XTAL1, RST)
IOL = 1.6 mA
IOL = 3.2 mA
-0.5
0.2 VCC - 0.1
V
-0.5
0.2 VCC - 0.3
V
0.2 VCC + 0.9
VCC + 0.5
V
0.7 VCC
VCC + 0.5
V
0.45
V
0.45
V
VOH
Output High Voltage
IOH = -60 µA, VCC = 5V ± 10%
2.4
V
(Ports 1,2,3, ALE, PSEN)
IOH = -25 µA
0.75 VCC
V
IOH = -10 µA
0.9 VCC
V
VOH1
Output High Voltage
IOH = -800 µA, VCC = 5V ± 10%
2.4
V
(Port 0 in External Bus Mode)
IOH = -300 µA
0.75 VCC
V
IOH = -80 µA
0.9 VCC
V
IIL
Logical 0 Input Current (Ports 1,2,3) VIN = 0.45V
-50
µA
ITL
Logical 1 to 0 Transition Current
VIN = 2V, VCC = 5V ± 10%
(Ports 1,2,3)
-650
µA
ILI
RRST
Input Leakage Current (Port 0, EA)
Reset Pulldown Resistor
0.45 < VIN < VCC
±10
µA
50
300
KΩ
CIO
ICC
Notes:
Pin Capacitance
Power Supply Current
Test Freq. = 1 MHz, TA = 25°C
Active Mode, 12 MHz
10
pF
20
mA
Idle Mode, 12 MHz
5
mA
Power Down Mode(2)
VCC = 6V
100
µA
VCC = 3V
40
µA
1. Under steady state (non-transient) conditions, IOL must be externally limited as follows:
Maximum IOL per port pin: 10 mA
Maximum IOL per 8-bit port: Port 0: 26 mA
Ports 1, 2, 3: 15 mA
Maximum total IOL for all output pins: 71 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.
4-37
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