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UPD75P308K Datasheet(PDF) 7 Page - NEC

Part # UPD75P308K
Description  4-BIT SINGLE-CHIP MICROCOMPUTER
Download  34 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD75P308K Datasheet(HTML) 7 Page - NEC

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µPD75P308
7
1.3 PIN INPUT/OUTPUT CIRCUITS
The following shows a simplified input/output circuit diagram for each pin of the
µPD75P308.
TYPE A (for TYPE E–B)
TYPE D (for TYPE E–B, F-A)
TYPE B
TYPE E–B
IN
VDD
P–ch
N–ch
Input buffer of CMOS standard
data
output
disable
OUT
P–ch
N–ch
Push–pull output that can be set in a output
high–impedance state (both P–ch and N–ch are off)
IN
Schmitt trigger input with hysteresis characteristics
data
output
disable
Type D
Type A
P.U.R.
enable
VDD
P.U.R.
P–ch
IN/OUT
P.U.R. : Pull–Up Resistor
P.U.R.
enable
VDD
P.U.R.
P–ch
TYPE B–C
TYPE E–E
IN
P.U.R. : Pull–Up Resistor
P.U.R. : Pull–Up Resistor
Schmitt trigger input with hysteresis characteristics
data
output
disable
Type A
P.U.R.
enable
VDD
P.U.R.
P–ch
IN/OUT
Type B
Type D


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