Datasheet

128
AT89C51IC2
4301D–8051–02/08
Electrical Characteristics
Absolute Maximum Ratings
DC Parameters for
Standard Voltage
C = commercial......................................................0°C to 70°C
I = industrial ........................................................-40°C to 85°C
Storage Temperature .................................... -65
°C to + 150°C
Voltage on V
CC
to V
SS
.......................................-0.5V to + 6.5V
Voltage on Any Pin to V
SS
..........................-0.5V to V
CC
+ 0.5V
Power Dissipation .............................................................. 1 W
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 func-
tional operation of the device at these or any other
conditions above those indicated in the operational
sections of this specification is not implied. Expo-
sure to absolute maximum rating conditions may
affect device reliability.
Power dissipation value is based on the maximum
allowable die temperature and the thermal resis-
tance of the package.
T
A
= -40°C to +85°C; V
SS
= 0V;
V
CC
=2.7V to 5.5V and F = 0 to 40 MHz (both internal and external code execution)
V
CC
=4.5V to 5.5V and F = 0 to 60 MHz (internal code execution only)
Symbol Parameter Min Typ Max Unit Test Conditions
V
IL
Input Low Voltage -0.5 0.2 V
CC
- 0.1 V
V
IH
Input High Voltage except RST, XTAL1 0.2 V
CC
+ 0.9 V
CC
+ 0.5 V
V
IH1
(9)
Input High Voltage RST, XTAL1 0.7 V
CC
V
CC
+ 0.5 V
V
OL
Output Low Voltage, ports 1, 2, 3, 4
(6)
0.3
0.45
1.0
V
V
V
VCC = 4.5V to 5.5V
I
OL
= 100 µ A
(4)
I
OL
= 1.6 mA
(4)
I
OL
= 3.5 mA
(4)
0.45 V
VCC = 2.7V to 5.5V
I
OL
= 0.8 mA
(4)
V
OL1
Output Low Voltage, port 0, ALE, PSEN
(6)
0.3
0.45
1.0
V
V
V
VCC = 4.5V to 5.5V
I
OL
= 200 µ A
(4)
I
OL
= 3.2 mA
(4)
I
OL
= 7.0 mA
(4)
0.45 V
VCC = 2.7V to 5.5V
I
OL
= 1.6 mA
(4)
V
OH
Output High Voltage, ports 1, 2, 3, 4
V
CC
- 0.3
V
CC
- 0.7
V
CC
- 1.5
V
V
V
V
CC
= 5V ± 10%
I
OH
= -10 µ A
I
OH
= -30 µ A
I
OH
= -60 µ A
0.9 V
CC
V
VCC = 2.7V to 5.5V
I
OH
= -10 µ A