HD404669 Datasheet, PDF (47/142 Pages) Hitachi Semiconductor – Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit

HD404669 Series
Table 16 Input/Output Pin Circuit Configurations
I/O Pin Type
Input/output pins
Circuit Configuration
V_{CC VCC}
Pull-up control signal
Buffer control signal
Output data
Input data
Input control signal
Input control signal
Input data
V_CC
Buffer control signal
HLT
MIS3
DCD,DCR
PDR
DCD
Relevant Pins
D₄ , D₅ , D₉ – D₁₁
R0₀–R0₃
R1₀–R1₃
R2₀–R2₃
R3₀–R3₃
R4₀–R4₂
R6₀–R6₃
R7₀–R7₃
R8₀–R8₃
R9₀–R9₃
RA₀, RA₁
D₀–D₃
V_CC
V_CC
Output data
Pull-down
control signal
PDR
MIS3
HLT
Pull-up control signal
Buffer control signal
Output data
Input data
HLT
MIS3
DCR
MIS2
PDR
R4₃
Input control signal
Input pins
Input data
Input control signal
D₁₂, D₁₃
RD_0, RD_1, RE₀
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