87C51 데이터 시트보기 (PDF) - Intel
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87C51 Datasheet PDF : 21 Pages
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87C51 80C51BH 80C31BH
ABSOLUTE MAXIMUM RATINGS
Ambient Temperature Under Bias b40 C to a85 C
Storage Temperature
b65 C to a150 C
Voltage on EA VPP Pin to VSS
Voltage on Any Other Pin to VSS
Maximum IOL per I O Pin
Power Dissipation
0V to a13 0V
b0 5V to a6 5V
15 mA
1 5W
(Based on package heat transfer limitations not de-
vice power consumption )
NOTICE This data sheet contains preliminary infor-
mation on new products in production It is valid for
the devices indicated in the revision history The
specifications are subject to change without notice
WARNING Stressing the device beyond the ‘‘Absolute
Maximum Ratings’’ may cause permanent damage
These are stress ratings only Operation beyond the
‘‘Operating Conditions’’ is not recommended and ex-
tended exposure beyond the ‘‘Operating Conditions’’
may affect device reliability
OPERATING CONDITIONS
Symbol
Description
TA
Ambient Temperature Under Bias
Commercial
Express
VCC
fOSC
Supply Voltage
Oscillator Frequency
87C51 BH
87C51-1 BH-1
87C51-2 BH-2
87C51-24 BH-24
Min
0
b40
45
35
35
05
35
Max
a70
a85
55
12
16
12
24
Unit
C
C
V
MHz
DC CHARACTERISTICS (Over Operating Conditions)
All parameter values apply to all devices unless otherwise indicated
Symbol
Parameter
Min
Typ(1)
Max
VIL
VIL1
VIH
VIH1
VOL
Input Low Voltage
Commercial
Express
Input Low Voltage EA
Commercial
Express
Input High Voltage
(Except XTAL1 RST)
Commercial
Express
Input High Voltage
(XTAL1 RST)
Commercial
Express
Output Low Voltage(6)
(Ports 1 2 3)
b0 5
b0 5
0
b0 5
0 2 VCC a 0 9
0 2 VCC a 1
0 7 VCC
0 7 VCC a 0 1
0 2 VCC b 0 1
0 2 VCC b 0 15
0 2 VCC b 0 3
0 2 VCC b 0 35
VCC a 0 5
VCC a 0 5
VCC a 0 5
VCC a 0 5
03
0 45
10
Unit
V
V
V
V
V
V
V
V
V
V
V
Test Conditions
IOL e 100 mA(2)
IOL e 1 6 mA(2)
IOL e 3 5 mA(2)
8
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