W78E54B Datasheet, PDF (13/21 Pages) Winbond – 8-BIT MICROCONTROLLER

W78E54B
DC Characteristics, continued
PARAMETER
SYMBOL TEST CONDITIONS SPECIFICATION UNIT
Input Leakage Current
P0, EA
Output Low Voltage
P1, P2, P3, P4
Output Low Voltage
ALE, PSEN , P0 ^(*3)
Output High Voltage
P1, P2, P3, P4
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)
ILK
VOL1
VOL2
VOH1
VOH2
VIL1
VIL2
VIL3
VIH1
ISK1
VIH2
VIH3
ISK2
ISR1
ISR2
VDD = 5.5V
0V < VIN < VDD
VDD = 4.5V
IOL1 = +2 mA
VDD = 4.5V
IOL2 = +4 mA
VDD = 4.5V
IOH1 = -100 µA
VDD = 4.5V
IOH2 = -400 µA
VDD = 4.5V
VDD = 4.5V
VDD = 4.5V
VDD = 4.5V
VDD = 4.5V
Vs = 0.45V
VDD = 4.5V
VDD = 4.5V
VDD = 4.5V
Vs = 0.45V
VDD = 4.5V
Vs = 2.4V
VDD = 4.5V
Vs = 2.4V
MIN.
MAX.
-10
+10
µA
-
0.45
V
-
0.45
V
2.4
-
V
2.4
-
V
0
0.8
V
0
0.8
V
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
-8
-250
uA
-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.
- 13 -
Publication Release Date: December 2000
Revision A3