W79E548 Datasheet, PDF (66/79 Pages) Winbond – 8-BIT MICROCONTROLLER

W79E548/W79L548
DC Characteristics, continued
PARAMETER
SYM.
SPECIFICATION
MIN.
MAX. UNIT
TEST CONDITIONS
Input High Voltage
VIH1
P0, P1, P2, P3, EA
Input High Voltage RST
VIH2
Input High Voltage
XTAL1^[*3]
VIH3
Sink current
Isk1
P1, P3, P4, P5, P6, P7
Sink current
Isk2
P0,P2, ALE, PSEN
Source current
P1, P2 (I/O), P3, P4, P5, ^Isr1
P6, P7
2.4 VDD +0.2 V VDD = 5.5V
1.8 VDD +0.2 V VDD = 3.3V
3.0 VDD +0.2 V VDD = 5.5V
2.0 VDD +0.2 V VDD = 3.3V
3.5 VDD +0.2 V VDD = 5.5V
2.0 VDD +0.2 V VDD = 3.3V
6
9
mA VDD = 4.5V, VOL = 0.45
3.8
7
mA VDD = 3.3V, VOL = 0.4
10
14
mA VDD = 4.5V , VOL = 0.45V
6.5
9.5
mA VDD = 3.3V, VOL=0.4
-200
-360
uA VDD = 4.5V, VOL = 2.4V
-100
-220
uA VDD = 3.3V, VOL = 1.4V
Source current
P0, P2 (address), ALE,
PSEN
Output Low Voltage
P1, P2 (I/O), P3
Output Low Voltage
P0, P2(address), ALE,
PSEN ^[*2]
-10
Isr2
-6
-
VOL1
-
-
VOL2
-
-14
-9
0.45
0.4
0.45
0.4
mA VDD = 4.5V, VOL = 2.4V
mA VDD = 3.3V, VOL = 1.4V
V VDD = 4.5V, IOL = +6 mA
V VDD = 3.3V, IOL = +3.8 mA
V VDD = 4.5V, IOL = +10 mA
V VDD = 3.3V, IOL = +6.5 mA
Output High Voltage
P1, P3, P4, P5, P6, P7
2.4
-
VOH1
1.4
-
V VDD = 4.5V, IOH = -200 μA
V VDD = 3.3V, IOL = -100 uA
Output High Voltage
P0, P2, ALE, PSEN ^[*2]
2.4
-
VOH2
1.4
-
V VDD = 4.5V, IOH = -10mA
V VDD = 3.3V, IOL = -6 mA
Notes:
*1. RST pin is a Schmitt trigger input.
*2. P0, ALE and PSEN are tested in the external access mode.
*3. XTAL1 is a CMOS input.
*4. Pins of P1, P2, P3 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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