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UPD17217 Datasheet(PDF) 8 Page - NEC

Part # UPD17217
Description  4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER
PDF  84 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD17217 Datasheet(HTML) 8 Page - NEC

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µPD17215, 17216, 17217, 17218
8
1.2
Input/Output Circuits
The equivalent input/output circuit for each
µPD17215 pin is shown below.
(1)
P0A, P0B
VDD
Input buffer
(2)
P0C, P0D
Output
latch
data
N-ch
(3)
P0E
VDD
data
data
P-ch
P-ch
N-ch
VDD
Input buffer
output
disable
Pull-up
register
Output
latch
Selector
(4)
RESET
V DD
Input buffer
Mask option
Schmitt trigger input with hysteresis charac-
teristics
(5)
INT
Input buffer
Schmitt trigger input with hysteresis
characteristics
(6)
REM
data
P-ch
N-ch
VDD
output
disable
(7)
WDOUT
data
N-ch



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