HD404618 Datasheet, PDF (40/91 Pages) Hitachi Semiconductor – 4-Bit Single-Chip Microcomputer

HD404618 Series
Table 19 Circuit Configurations of I/O Pins
I/O Pin Type
Common I/O pin
(with pull-up MOS
transistor)
Circuit
V_CC
V_CC
Pull-up control signal
DCR
Output data
PDR
Input data
Input control signal
Applicable Pins
D₀–D₉
R0₀–R0₃
R1₀–R1₃
R2₀–R2₃
R3₀–R3₃
V_CC
V_CC
Pull-up control signal
DCR
Output data _{SCK (internal)}
SCK
SCK
Output pin (with
pull-up MOS
transistor)
V_CC
V_CC
Pull-up control signal
DCR
Output data
SO or TIMO
SO, TIMO
Input pin
V_CC
PDR
Input control signal
Pull-up control signal
Input data
Input control
Input data
VC_ref
Analog input
+
–
Mode select signal
Note: Refer to table 20, note 3 concerning R0₂/SO.
INT₀ , INT₁
SI
D₁₀
D₁₁/VC_ref
D₁₂/COMP₀
D₁₃/COMP₁
(multiplexed with
analog inputs)
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