W78c54 – Rainbow Electronics W78C54 User Manual
Page 12
W78C54
- 12 -
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
UNIT
TEST CONDITIONS
MIN.
MAX.
Operating Voltage
V
DD
4.5
5.5
V
Operating Current
I
DD
-
20
mA
No load
V
DD
= 5.5V
Idle Current
I
IDLE
-
6
mA
Idle mode
V
DD
= 5.5V
Power Down Current
I
PWDN
-
50
µA
Power-down mode
V
DD
= 5.5V
Input Current
P1, P2, P3, P4
I
IN1
-50
+10
µA
V
DD
= 5.5V
V
IN
= 0V or V
DD
Input Current
RST
I
IN2
-10
+300
µA
V
DD
= 5.5V
0 < V
IN
< V
DD
Input Leakage Current
P0, EA
I
LK
-10
+10
µA
V
DD
= 5.5V
0V < V
IN
< V
DD
Logic 1 to 0 Transition
Current
P1, P2, P3, P4
I
TL
[*4]
-500
-200
µA
V
DD
= 5.5V
V
IN
= 2.0V
Input Low Voltage
P0, P1, P2, P3, P4, EA
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