3.
Register Notation
The symbols and terms used in register diagrams are described below.
XXX Register
b7
b6
b5
b4
b3
b2
b1
b0
*1
Symbol
XXX
Address
XXX
After Reset
00h
0
Bit Symbol
XXX0
Bit Name
XXX bits
b1 b0
Function
1 0: XXX
0 1: XXX
1 0: Do not set.
1 1: XXX
RW
RW
RW
*2
XXX1
(b2)
Nothing is assigned. If necessary, set to 0.
When read, the content is undefined.
*3
RW
(b3)
Reserved bits
Set to 0.
Function varies according to the operating
mode.
*4
XXX4
XXX bits
RW
XXX5
WO
XXX6
XXX bit
0: XXX
1: XXX
RW
XXX7
RO
*1
Blank: Set to 0 or 1 according to the application.
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
• Reserved bit
Reserved bit. Set to specified value.
*4
• Nothing is assigned
Nothing is assigned to the bit. As the bit may be used for future functions, if necessary, set to 0.
• Do not set to a value
Operation is not guaranteed when a value is set.
• Function varies according to the operating mode.
The function of the bit varies with the peripheral function mode. Refer to the register diagram for information
on the individual modes.
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