W78C58 Datasheet, PDF (13/22 Pages) Winbond – 8-BIT MICROCONTROLLER

W78C58
DC Characteristics, continued
PARAMETER
Input Low Voltage
P0, P1, P2, P3, P4, EA
Input Low Voltage
RST
SYM.
VIL1
SPECIFICATION
MIN.
MAX.
0
0.8
UNIT
V
TEST CONDITIONS
VDD = 4.5V
VIL2
0
0.8
V
VDD = 4.5V
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]
Sink Current
P1, P2, P3, P4
Sink Current
P0, ALE, PSEN
Output High Voltage
P1, P2, P3, P4
Output High Voltage
P0, ALE, PSEN [*3]
Source Current
P1, P2, P3, P4
Source Current
P0, ALE, PSEN
VIL3
0
0.8
V
VDD = 4.5V
VIH1
2.4 VDD +0.2
V
VDD = 5.5V
VIH2
3.5 VDD +0.2
V
VDD = 5.5V
VIH3
3.5 VDD +0.2
V
VDD = 5.5V
VOL1
-
VOL2
-
ISK1
4
ISK2
10
VOH1
2.4
VOH2
2.4
ISR1
-120
ISR2
-8
0.45
0.45
8
14
-
-
-180
-14
V
VDD = 4.5V
IOL = +2 mA
V
VDD = 4.5V
IOL = +4 mA
mA
VDD = 4.5V
Vs = 0.45V
mA
VDD = 4.5V
Vs = 0.45V
V
VDD = 4.5V
IOH = -100 µA
V
VDD = 4.5V
IOH = -400 µA
µA
VDD = 4.5V
Vs = 2.4V
mA
VDD = 4.5V
Vs = 2.4V
Notes:
*1. RST pin is a Schmitt trigger input. RST has internal pull-low resistors of about 30 KΩ.
*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.
- 13 -
Publication Release Date: December 1997
Revision A5