HD404654 Datasheet, PDF (37/109 Pages) Hitachi Semiconductor – 4-Bit Single-Chip Microcomputer

HD404654 Series
Table 20-1 Circuit Configurations of I/O Pins
I/O Pin Type
Input/output
pins
Circuit
V_CC
V_CC
Pull-up control signal
Buffer control
signal
Output data
HLT
MIS3
DCD, DCR
PDR
Input data
Input control signal
Pins
D₄–D₉, R0₀,
R1₀–R1₃, R2₀–R2₃
R3₀–R3_3, R4₀–R4₂
Input control signal
V_CC
Input data
Buffer control signal
DCD
D₀–D₃
Input pins
Output data
PDR
Pull-down control
signal
MIS3
HLT
V_CC
V_CC
Pull-up control signal
Buffer control
signal
Output data
Input data
HLT
MIS3
DCR
MIS2
PDR
Input control signal
Input data
Input control signal
R4₃
D₁₂, D₁₃
RD₀, RD₁, RE₀
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