W78C52D Datasheet, PDF (10/18 Pages) Winbond – 8-BIT MICROCONTROLLER

Preliminary W78C52D
DC Characteristics, continued
PARAMETER
SYM.
SPECIFICATION
TEST CONDITIONS
MIN. MAX. UNIT
Input
Input High Voltage
VIH1
2.4 VDD
V
VDD = 5.5V
P1, P2, P3, P4
+0.2
Input High Voltage
VIH2
3.5 VDD
V
VDD = 5.5V
RST
+0.2
Input High Voltage
XTAL1^[*4]
VIH3
3.5 VDD
V
+0.2
VDD = 5.5V
Output
Output Low Voltage
P1, P2, P3, P4
VOL1
-
0.45
V
VDD = 4.5V
IOL = +2 mA
Output Low Voltage
P0, ALE, PSEN ^[*4]
VOL2
-
0.45
V
VDD = 4.5V
IOL = +4 mA
Sink Current
P1, P2, P3, P4
ISK1
4
8
mA
VDD = 4.5V
Vin = 0.45V
Sink Current
P0, ALE, PSEN
ISK2
8
16
mA
VDD = 4.5V
VIN = 0.45V
Output High Voltage
VOH1
2.4
-
V
VDD = 4.5V
P1, P2, P3, P4
IOH = -100 µA
Output High Voltage
VOH2
2.4
-
V
VDD = 4.5V
P0, ALE, PSEN ^[*4]
IOH = -400 µA
Source Current
P1, P2, P3, P4
ISR1 -100 -250 µA
VDD = 4.5V
VIN = 2.4V
Source Current
P0, ALE, PSEN
ISR2
-8
-14 mA
VDD = 4.5V
VIN = 2.4V
Notes:
*1. RST pin has an internal pull-down.
*2. Pins of P1 and P3 can source a transition current when they are being externally driven from 1 to 0.
*3. RST is a Schmitt trigger input and XTAL1 is a CMOS input.
*4. P0, P2, ALE and PSEN are tested in the external access mode.
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