µPD75048
3.3 PIN INPUT/OUTPUT CIRCUITS
The following shows a simplified input/output circuit diagram for each pin of the µPD75048.
TYPE A (for TYPE E–B)
TYPE D (for TYPE E–B, F-A)
VDD
P–ch
IN
N–ch
data
output
disable
VDD
P–ch
OUT
N–ch
Input buffer of CMOS standard
TYPE B
IN
Schmitt trigger input with hysteresis
characteristics
Push–pull output that can be set in the output
high–impedance state (both P–ch and N–ch are off)
TYPE E–B
data
output
disable
P.U.R.
enable
Type D
VDD
P.U.R.
P–ch
IN/OUT
Type A
P.U.R. : Pull–Up Resistor
13