HD404654 Datasheet, PDF (36/109 Pages) Hitachi Semiconductor – 4-Bit Single-Chip Microcomputer

HD404654 Series
D₄–D₉, R port
V_CC
V_CC
Pull-up
MOS
Pull-up control signal
HLT
MIS3
Buffer control signal
DCD, DCR
D₀–D₃ port
Output data
PDR
Input data
Input control signal
Figure 21 I/O Buffer Configuration (with Pull-Up MOS)
Input control signal
Input data
V_CC
Buffer control signal
DCD
Output data
PDR
Pull-down control signal
MIS3
HLT
Figure 22 I/O Buffer Configuration (with Pull-Down MOS)
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