hd64338342hw Renesas Electronics Corporation., hd64338342hw Datasheet - Page 292

• Manufacturer Part Number: hd64338342hw
• Description: Renesas 8-bit Single-chip Microcomputer H8 Family/h8/300l Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

Section 8 I/O Ports
8.14.3
When a serial port control register is modified, the data being input or output up to that point is
inverted immediately after the modification, and an invalid data change is input or output. When
modifying a serial port control register, do so in a state in which data changes are invalidated.
8.15
8.15.1
If an I/O pin not used by the user system is floating, pull it up or down.
Rev. 6.00 Aug 04, 2006 page 256 of 680
REJ09B0145-0600
If an unused pin is an input pin, handle it in one of the following ways:
If an unused pin is an output pin, handle it in one of the following ways:
Pull it up to V
Pull it up to V
Pull it down to V
For a pin also used by the A/D converter, pull it up to AV
Set the output of the unused pin to high and pull it up to V
approximately 100 k .
Set the output of the unused pin to low and pull it down to V
approximately 100 k .
Note on Modification of Serial Port Control Register
Application Note
The Management of the Un-Use Terminal
CC
CC
with an on-chip pull-up MOS.
with an external resistor of approximately 100 k .
SS
with an external resistor of approximately 100 k .
CC
CC
.
SS
with an external resistor of
with an external resistor of