w78c31b Winbond Electronics Corp America, w78c31b Datasheet - Page 6

• Manufacturer Part Number: w78c31b
• Description: 8-bit Microcontroller
• Manufacturer: Winbond Electronics Corp America

During reset, the ports are initialized to FFH, the stack pointer to 07H, PCON (with the exception of
bit 4) to 00H, and all of the other SFR registers except SBUF to 00H. SBUF is not reset.
ABSOLUTE MAXIMUM RATINGS
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability
the device.
DC CHARACTERISTICS
V
CC
DC Power Supply
Input Voltage
Operating Temperature
Storage Temperature
Operating Voltage
Operating Current
Idle Current
Power Down Current
Input Current P1, P3
Input Current RST
Input Leakage
Current P0
Output Low Voltage
P1, P2
Output Low Voltage ALE,
Output High Voltage
P1, P3
Output High Voltage
ALE, PSEN , P0
(*1)
PSEN , PO
-V
SS
= 5V ¡Ó 10%, T
PARAMETER
(*1)
, P3
PARAMETER
(*1)
(*1)
(*1)
A
(*2)
= 25 C, F
, P2
OSC
SYMBOL
I
= 20 MHz unless otherwise specified.
V
V
PWDN
V
V
I
V
I
I
I
IDLE
I
IN1
IN2
OH1
OH2
DD
OL1
OL2
LK
DD
SYMBOL
V
No load V
Idle mode V
Power-down mode
V
V
V
V
V
V
0V < V
V
I
V
I
V
I
V
I
OL1
OL2
OH1
OH2
CC
TEST CONDITIONS
DD
DD
IN
DD
IN
DD
DD
DD
DD
DD
T
V
T
ST
IN
= 0V or V
= V
A
= +2 mA
= +4 mA
V
= 5.5V
= 5.5V
= 5.5V
= 5.5V
= 4.5V
= 4.5V
= 4.5V
= 4.5V
= -100 A
= -400 A
SS
IN
- 6 -
DD
< V
DD
DD
DD
= 5.5V
DD
= 5.5V
V
SS
MIN.
-0.3
-55
0
-0.3
MIN.
-75
-10
4.5
2.4
2.4
-
-
-
-
-
-
SPECIFICATION
V
CC
MAX.
+150
+7.0
TYP.
+184
70
+0.3
5
-
-
-
-
-
-
-
-
-
W78C31B
MAX.
+350
0.45
0.45
+10
+10
5.5
30
50
6
-
-
UNIT
V
V
C
C
UNIT
mA
mA
V
V
V
V
V
A
A
A
A
of