UPD75237 Datasheet, PDF (11/191 Pages) NEC – 4-BIT SINGLE-CHIP MICROCOMPUTER

1.3 PIN INPUT/OUTPUT CIRCUIT LIST (1/4)
TYPE A
VDD
P-ch
IN
N-ch
CMOS-Specified Input Buffer
TYPE B
IN
Schmitt Trigger Input Having Hysteresis
Characteristics
TYPE B-C
VDD
P.U.R
P-ch
IN
P.U.R
enable
P.U.R:Pull-Up Resistor
Schmitt Trigger Input Having Hysteresis Char-
acteristics
µPD75237
TYPE D
data
output
disable
VDD
P-ch
OUT
N-ch
Push-Pull Output which can be Set to Output High
Impedance (with Both P-ch and N-ch Set to OFF)
TYPE E
data
output
disable
Type D
IN/OUT
Type A
Input/Output Circuit Consisting of Type D
Push-Pull Output and Type A Input Buffer
TYPE E-B
output
disable
data
output
disable
Type D
VDD
P.U.R
P-ch
IN/OUT
Type A
P.U.R:Pull-Up Resistor
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