Pin Input/Output Circuits - NEC mPD75512 Datasheet

4.3

PIN INPUT/OUTPUT CIRCUITS

The following shows a simplified input/output circuit diagram for each pin of the µ PD75512.
TYPE A
V
IN
Input buffer of CMOS standard
TYPE B
IN
Schmitt trigger input with hysteresis characteristics
TYPE B–C
V
DD
P.U.R.
P–ch
IN
P.U.R. : Pull-Up Resistor
Schmitt trigger input with hysteresis characteristics
DD
P–ch
N–ch
P.U.R.
enable
Fig. 4-1 Pin Input/Output Circuits (1/3)
TYPE D
data
output
disable
Push-pull output that can be set in a output
high-impedance state (both P-ch and N-ch are off)
TYPE E
data
Type D
output
disable
Type A
This input/output circuit consists of D-type push-pull
outputs and Type A input buffers.
TYPE E – B
P.U.R.
enable
data
Type D
output
disable
Type A
P.U.R. : Pull-Up Resistor
µ PD75512
V
DD
P–ch
OUT
N–ch
IN/OUT
V
DD
P.U.R.
P–ch
IN/OUT
11