HD404849 Datasheet, PDF (46/125 Pages) Hitachi Semiconductor – 4-Bit Single-Chip Microcomputer

HD404849 Series
Table 24 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
MIS3
DCD, DCR
Output data
PDR
Input data
Input control signal
Pins
D₀–D₈
R0₀–R0₃
R1₀–R1₃
R2₀–R2₂
R3₀–R3₃
R6₀–R6₃
R7₀–R7₃
V_CC
V_CC
Pull-up control signal
Buffer control
MIS3
R2₃
signal
DCR
Output data
MIS2
PDR
Input data
Input control signal
Input pins
Input data
Input control signal
D₁₀, D₁₁
Peripheral Input/
function pins output
pins
V_CC
V_CC
Pull-up control signal
MIS3
Output data
Input data
SCK
SCK
SCK
Output
V_CC
Pull-up control signal
SO
pins
V_CC
MIS3
PMOS control
signal
MIS2
Output data ^SO
V_CC
V_CC
Pull-up control signal
MIS3
Output data
TOB, TOC,
TOD
TOB, TOC,
TOD
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