Renesas M16C/29 Series Hardware Manual page 3

This hardware manual provides detailed information on features in the M16C/29 Group
microcomputer.
Users are expected to have basic knowledge of electric circuits, logical circuits and micro-
computer.
Each register diagram contains bit functions with the following symbols and descriptions.
XXX register
b7 b6 b5
*1
Blank:Set to "0" or "1" according to your intended use
0: Set to "0"
1: Set to "1"
X: Nothing is assigned
*2
RW: Read and write
RO: Read only
WO: Write only
–: Nothing is assigned
*3
Terms to use here are explained as follows.
• Nothing is assigned
Nothing is assigned to the bit concerned. When write, set to "0" for new function
in future plan.
• Reserved bit
Reserved bit. Set the specified value.
• Avoid this setting
The operation at having selected is not guaranteed.
• Function varies depending on each operation mode
Bit function varies depending on peripheral function mode.
Refer to register diagrams in each mode.
How to Use This Manual
*1
Symbol
b4 b3 b2 b1 b0
XXX
0
Bit symbol
XXX bit
XXX0
XXX1
Nothing is assigned.
(b2)
When write, should set to "0". When read, its content is indeterminate.
(b3)
XXX4 XXX bit
XXX5
XXX6
XXX7 XXX bit
Address After reset
XXX 00
16
Bit name
b1 b0
1 0: XXX
0 1: XXX
1 0: Avoid this setting
1 1: XXX
Reserved bit Should set to "0"
Function varies depending on each
operation mode
0: XXX
1: XXX
Function RW
RW
RW
RW
RW
WO
RW
RO
*2
*3