W78E516B
D.C. Electrical Characteristics, continued
PARAMETER
SYM.
SPECIFICATION
TEST CONDITIONS
MIN.
MAX.
UNIT
IL2
DD
Input Low Voltage
RST
V
0
0.8
V
V
V
V
V
V
= 4.5V
= 4.5V
= 5.5V
IL3
V
DD
DD
Input Low Voltage
XTAL1[*4]
0
0.8
IH1
DD
+0.2
Input High Voltage
V
2.4
V
EA
P0, P1, P2, P3, P4,
Input High Voltage
RST
IH2
DD
DD
DD
DD
V
3.5
3.5
-
V
V
+0.2
+0.2
V
V
V
V
V
V
V
= 5.5V
= 5.5V
= 4.5V
IH3
V
DD
Input High Voltage
XTAL1[*4]
OL1
Output Low Voltage
P1, P2, P3, P4
Output Low Voltage
V
0.45
OL
I
= +2 mA
OL2
DD
V = 4.5V
V
-
0.45
P0, ALE, PSEN [*3]
Sink Current
P1, P3, P4
OL
I
= +4 mA
DD
Isk1
Isk2
4
12
20
mA
mA
V
V
V
V
= 4.5V
IN
= 0.45V
DD
IN
Sink Current
10
= 4.5V
= 0.45V
PSEN
P0, P2, ALE,
OH1
DD
= 4.5V
Output High Voltage
P1, P2, P3, P4
V
2.4
2.4
-
-
V
V
V
OH
m
= -100 A
I
OH2
V
DD
V = 4.5V
Output High Voltage
P0, ALE, PSEN [*3]
Source Current
P1, P2, P3, P4
Source Current
OH
m
= -400 A
I
DD
Isr1
Isr2
-120
-8
-250
-20
V
V
V
V
= 4.5V
m
A
IN
= 2.4V
DD
IN
mA
= 4.5V
= 2.4V
P0, P2, ALE, PSEN
Notes:
*1. RST pin is a Schmitt trigger input.
*3. P0, ALE and
are tested in the external access mode.
PSEN
*4. XTAL1 is a CMOS input.
*5. Pins of P1, P2, P3 , P4 can source a transition current when they are being externally driven from 1 to 0. The transition current
reaches its maximum value when VIN approximates to 2V.
- 14 -
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