NEC PD750004, User Manual, Page: 38 / 342

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µPD750008 USER'S MANUAL
Type B-C
2.3 PIN INPUT/OUTPUT CIRCUITS
Figure 2-1 shows schematic diagrams of the I/O circuitry of the µPD750008.
Figure 2-1. Pin Input/Output Circuits (1/2)
Type A
Schmitt trigger input with hysteresis
IN
CMOS input buffer
V
DD
IN
P-ch
N-ch
Push-pull output which can be set to high-impedance output
(off for both P-ch and N-ch)
V
DD
P-ch
N-ch
OUT
Data
Output
disable
Type D Type B
P.U.R.: Pull-Up Resistor
IN
P-ch
P.U.R.
enable
P.U.R.
V
DD