µPD750004, 750006, 750008, 750004(A), 750006(A), 750008(A)
3.3 PIN INPUT/OUTPUT CIRCUITS
The input/output circuit of each µPD750008 pin is shown below in a simplified manner.
Type A
Type D
VDD
P-ch
IN
N-ch
Data
Output
disable
VDD
P-ch
OUT
N-ch
CMOS input buffer
Push-pull output which can be set to high-impedance output
(off for both P-ch and N-ch)
Type B
IN
Schmitt trigger input with hysteresis
Type B-C
VDD
P.U.R.
P-ch
P.U.R.
enable
IN
P.U.R.: Pull-Up Resistor
Type E-B
Data
Output
disable
P.U.R.
enable
Type D
VDD
P.U.R.
P-ch
IN/OUT
Type A
Type F-A
Data
Output
disable
P.U.R.: Pull-Up Resistor
P.U.R.
enable
Type D
VDD
P.U.R.
P-ch
IN/OUT
Type B
P.U.R.: Pull-Up Resistor
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