W78ERD2 Datasheet, PDF (58/72 Pages) Winbond – 8-BIT MICROCONTROLLER

W78ERD2
D.C. Electrical Characteristics, continued
PARAMETER
Input Low Voltage
RST
Input Low Voltage
XTAL1^[*4]
Input High Voltage
P0, P1, P2, P3, P4, EA
Input High Voltage
RST
Input High Voltage
XTAL1^[*4]
Output Low Voltage
P1, P2, P3, P4
Output Low Voltage
P0, ALE, PSEN ^[*3]
SYM.
VIL2
VIL3
VIH1
VIH2
VIH3
VOL1
VOL2
SPECIFICATION
MIN.
MAX. UNIT
0
0.8
V
TEST CONDITIONS
VDD = 4.5V
VDD = 4.5V
0
0.8
V
VDD = 5.5V
2.4 VDD +0.2 V
VDD = 5.5V
3.5 VDD +0.2 V
VDD = 5.5V
3.5 VDD +0.2 V
VDD = 4.5V
-
0.45
V
IOL = +2 mA
VDD = 4.5V
-
0.45
V
IOL = +4 mA
Sink Current
P1, P3, P4
Sink Current
P0, P2, ALE, PSEN
Isk1
4
Isk2
10
VDD = 4.5V
8
mA
VIN = 0.45V
VDD = 4.5V
15
mA
VIN = 0.45V
Output High Voltage
P1, P2, P3, P4
Output High Voltage
P0, ALE, PSEN ^[*3]
VDD = 4.5V
VOH1
2.4
-
V
IOH = -100 µA
VDD = 4.5V
VOH2
2.4
-
V
IOH = -400 µA
Source Current
P1, P2, P3, P4
Source Current
P0, P2, ALE, PSEN
VDD = 4.5V
Isr1
-180
-300
µA
VIN = 2.4V
VDD = 4.5V
Isr2
-8
-12
mA
VIN = 2.4V
Notes:
*1. RST pin is a Schmitt trigger input.
*3. P0, ALE and PSEN are tested in the external access mode.
*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.
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