Preliminary w78c51d – Rainbow Electronics W78C51D User Manual
Page 9
Preliminary W78C51D
Publication Release Date: January 1999
- 9 -
Revision A1
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
MIN.
MAX.
UNIT
DC Power Supply
V
CC
−V
SS
-0.3
+7.0
V
Input Voltage
V
IN
V
SS
-0.3
V
CC
+0.3
V
Operating Temperature
T
A
0
70
°C
Storage Temperature
T
ST
-55
+150
°C
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the
device.
DC CHARACTERISTICS
(V
DD
−V
SS
= 5V
±10%, T
A
= 25
°C, Fosc = 20 MHz, unless otherwise specified.)
PARAMETER
SYM.
SPECIFICATION
TEST CONDITIONS
MIN.
MAX.
UNIT
Operating Voltage
V
DD
4.5
5.5
V
Operating Current
I
DD
-
20
mA
V
DD
= 5.5V, 20 MHz, no load
Idle Current
I
IDLE
-
6
mA
V
DD
= 5.5V, 20 MHz, no load
Power Down Current
I
PWDN
-
50
µA
V
DD
= 5.5V, no load
Input Current
P1, P2, P3, P4
I
IN
-50
+10
µA
V
DD
= 5.5V
V
IN
= 0V or V
DD
Input Leakage Current
P0,
EA
I
LK
-10
+10
µA
V
DD
= 5.5V
V
SS
< V
IN
< V
DD
Input Current
RST
I
IN2
-10
+300
µA
V
DD
= 5.5V
0 < V
IN
< V
DD
Logic 1-to-0 Transition Current
P1, P2, P3, P4
I
TL
-500
-
µA
V
DD
= 5.5V
V
IN
= 2V
Input
Input Low Voltage
P1, P2, P3, P4
V
IL1
0
0.8
V
V
DD
= 4.5V
Input Low Voltage
RST
V
IL2
0
0.8
V
V
DD
= 4.5V
Input Low Voltage
XTAL1
[*4]
V
IL3
0
0.8
V
V
DD
= 4.5V