µPD75064, 75066, 75068, 75064(A), 75066(A), 75068(A)
3.3 Pin Input/Output Circuits
The input/output circuit of each µPD75068 pin is shown below in a simplified manner.
Type A (For type E-B)
Type D (For type E-B, F-A)
(1/3)
VDD
P-ch
IN
Data
VDD
P-ch
OUT
N-ch
Output
disable
N-ch
Type B
CMOS input buffer
IN
Push-pull output which can be set to high impedance output
(off for both P-ch and N-ch)
Type E-B
P.U.R.
enable
VDD
P.U.R.
P-ch
Data
Output
disable
Type D
IN/OUT
Type A
Schmitt trigger input with hysteresis
Type B-C
P.U.R.: Pull-Up Resistor
VDD
P.U.R.
P-ch
P.U.R.
enable
IN
P.U.R.: Pull-Up Resistor
10