W79E825A Datasheet, PDF (120/127 Pages) Winbond – 8-BIT MICROCONTROLLER

W79E825A/824A/823B/822B Data Sheet
DC ELECTRICAL CHARACTERISTICS, continued
PARAMETER
SYMBOL
SPECIFICATION
MIN. TYP. MAX.
UNIT
TEST CONDITIONS
Input Low Voltage
XTAL1^[*2]
0
-
0.8
V V_DD = 4.5V
V_IL3
0
-
0.4
V V_DD = 3.0V
Input High Voltage
XTAL1^[*2]
3.5
-
V_DD +0.2
V V_DD = 5.5V
V_IH3
2.4
-
V_DD +0.2
V V_DD = 3.0V
Input High Voltage P0,
V_IH1
2.4
-
V_DD +0.2
V V_DD = 5.5V
P1, P2 (TTL input)
2.0
-
V_DD +0.2
V V_DD = 3.0V
Negative going threshold
(Schmitt input)
V_ILS
-0.5
-
0.3V_DD
V
Positive going threshold
(Schmitt input)
V_IHS
0.7V_DD
-
V_DD+0.5
V
Hysteresis voltage
V_HY
0.2V_DD
V
Source Current P0, P1,
P2
(Quasi-bidirectional
I_sr1
-180
-210
-360
uA V_DD = 4.5V, V_S = 2.4V
Mode)
Sink Current P0, P1, P2
(Quasi-bidirectional
I_SK2
Mode)
Output Low Voltage P0,
P1, P2
V_OL1
(PUSH-PULL Mode)
13
18.5
24
mA V_DD = 4.5V, V_S = 0.45V
-
0.5
0.9
V V_DD = 4.5V, I_OL = 20 mA
-
0.1
0.4
V V_DD = 2.7V, I_OL = 3.2 mA
Output High Voltage P0,
2.4
3.4
-
V V_DD = 4.5V, I_OH = -16mA
P1, P2
(PUSH-PULL Mode)
V_OH
1.9
2.4
-
V V_DD = 2.7V, I_OH = -3.2mA
Brownout voltage with
BOV=1
V_BO2.5
2.4
-
2.7
V TA = -0 to 70°C
Brownout voltage with
BOV=0
V_BO3.8
3.5
-
4.0
V TA = -0 to 70°C
Comparator Reference
Voltage
Vref
1.02
1.20
1.31
V
Notes: *1. /RST pin is a Schmitt trigger input.
*2. XTAL1 is a CMOS input.
*3. Pins of P0, P1 and P2 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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