W78E54C Datasheet, PDF (14/24 Pages) Winbond – 8-BIT MICROCONTROLLER

W78E54C/W78E054C
DC Characteristics, continued
PARAMETER
Output High Voltage
ALE, PSEN , P0 ^(*3)
Input Low Voltage
(Except RST)
Input Low Voltage
RST ^(*4)
Input Low Voltage
XTAL1 ^(*4)
Input High Voltage
(Except RST)
Sink Current
P1, P2, P3, P4
Input High Voltage
RST ^(*4)
Input High Voltage
XTAL1 ^(*4)
Sink Current
P0, ALE, PSEN ^(*3)
Source Current
P1, P2, P3, P4
Source Current
P0, ALE, PSEN ^(*3)
SYMBOL
TEST CONDITIONS
VOH2
VIL1
VDD = 4.5V
IOH2 = -400 μA
VDD = 4.5V
PECIFICATION
MIN. MAX.
UNIT
2.4
-
V
0
0.8
V
VIL2
VDD = 4.5V
0
0.8
V
VIL3
VDD = 4.5V
VIH1
ISK1
VIH2
VDD = 4.5V
VDD = 4.5V
Vs = 0.45V
VDD = 4.5V
VIH3
ISK2
ISR1
ISR2
VDD = 4.5V
VDD = 4.5V
Vs = 0.45V
VDD = 4.5V
Vs = 2.4V
VDD = 4.5V
Vs = 2.4V
0
0.8
V
2.4
VDD
+0.2
V
4
12
mA
0.67
VDD
VDD
+0.2
V
0.67
VDD
VDD
+0.2
V
8
16
mA
-100 -250
uA
-8
-14
mA
Notes:
*1. Pins P1, P2 and P3 source a transition current when they are being externally driven from 1 to 0. The transition current
reaches its maximum value when VIN is approximately 2V.
*2. RST pin has an internal pull-down resistor.
*3. P0, ALE, ^PSEN are in the external access memory mode.
*4. XTAL1 is a CMOS input and RST is a Schmitt trigger input.
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