HD404019R Datasheet, PDF (32/65 Pages) Renesas Technology Corp – CMOS 4-bit single-chip microcomputers

HD404019R Series
Standard Pins
Without Pull-Up MOS
(NMOS Open Drain) or CMOS (A or C) With Pull-Up MOS (B)
Applicable
Pins
I/O
common
pins
SCK
HLT
V_CC
HLT + mode select
V_CC V_CC
SCK SCK*
HLT
(output mode)
HLT +
mode select
Output
pins
Internal SCK
Internal SCK
V_CC
V_CC V_CC
SO
HLT
HLT
SO
SO
Input pins
Input
data
HLT
INT₀, INT₁
Input
data
SI, SCK
HLT
(input mode)
Notes: In the stop mode, HLT is 0, HLT is 1 and I/O pins are in high impedance.
* If the MCU is interrupted by the serial interface in the external clock input mode, the SCK terminal
becomes input only.
Table 18 Data Input from Common Input/Output Pins
I/O Pin Circuit Type
Standard pins
CMOS
Without pull-up MOS (NMOS open drain)
With pull-up MOS
High voltage pins Without pull-down MOS (PMOS open drain)
With pull-down MOS
Input Possible
No
Yes
Yes
Yes
Yes
Input Pin State
—
1
1
0
0
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