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W78C438CP-40 Datasheet(PDF) 11 Page - Winbond

Part # W78C438CP-40
Description  8-BIT MICROCONTROLLER
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Manufacturer  WINBOND [Winbond]
Direct Link  http://www.winbond.com
Logo WINBOND - Winbond

W78C438CP-40 Datasheet(HTML) 11 Page - Winbond

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W78C438C
Publication Release Date: July 1998
- 11 -
Revision A1
DC CHARACTERISTICS
VDD
VSS = 5V
±10%, TA = 25° C, FOSC = 20 MHz, unless otherwise specified.
PARAMETER
SYM.
TEST CONDITIONS
MIN.
TYP.
MAX.
UNIT
Oper. Voltage
VDD
4.5
5
5.5
V
Oper. Current
IDD
* No load
-
-
20
mA
Idle Current
IIDLE
Program idle mode
-
-
7
mA
Pwdn Current
IPWDN
Program power-down mode
-
-
50
µA
Input Leakage
Current
ILK1
INT2
, INT3
Internal pull-high
Notes 1, 2
-300
-
+10
µA
Input Leakage
Current
ILK2
RESET
Internal pull-low
Notes 1, 2
-10
-
+300
µA
Input Leakage
Current
ILK3
EA , Port 0, DP4
Note 1
-10
-
+10
µA
Input Leakage
Current
ILK4
P1, P2, P3, P8
Note 1
-50
-
+10
µA
Output Low Voltage
VOL1
IOL1 = 2 mA
(Port 1, 2, 3, 8)
-
-
0.45
V
Output High Voltage
VOH1
IOH1 = -100
µA (Port 1, 2, 3, 8)
2.4
-
-
V
Output Low Voltage
VOL2
IOL2 = 4mA
Note 3
(ALE, PSEN, P0, DP4)
-
-
0.45
V
Output High Voltage
VOH2
IOH2 = -400
µA
Note 3
(ALE, PSEN, P0, DP4)
2.4
-
-
V
Output Low Voltage
VOL3
IOL2 = 2 mA
(AP5, AP6, AP7)
-
-
0.45
V
Output High Voltage
VOH3
IOH2 = -100
µA (AP5, AP6, AP7)
2.4
-
-
V
Input Voltage
VILT
VDD = 5V
±10%
0
-
0.8
V
Input Voltage
VIHT
VDD = 5V
±10%
2.4
-
Note 4
V
Input Voltage
VILC
VDD = 5V
±10%, XTAL1 Note 5
0
-
0.8
V
Input Voltage
VIHC
VDD = 5V
±10%, XTAL1 Note 5
3.5
-
Note 4
V
Input Voltage
VILR
VDD = 5V
±10%, RESET Note 5
0
-
0.8
V
Input Voltage
VIHR
VDD = 5V
±10%, RESET Note 5
2.4
-
Note 4
V
Notes:
1. 0 < VIN < VDD, for INT2 , INT3 , RESET, EA , Port 0, DP4, P1, P2, P3 and P8 inputs in leakage.
2. Using an internal pull low/high resistor (approx. 30K).
3. ALE, PSEN , P0 and DP4 in external program or data access mode.
4. The maximum input voltage is VDD +0.2V.
5. XTAL1 is a CMOS input and RESET is a Schmitt trigger input.


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