3.
Registers
The following illustration describes registers used throughout this manual.
Symbol
EXAMPLE
Address
9999h
Reset Value
000X 1X00b
Example Register
Bit Symbol
Bit Name
Description
AAAA0
Example bit 0
RW
0 1
b0
b7 b6 b5 b4 b3 b2 b1
RW
AAAA1
RW
Reserved
Set this bit to 1.
RW
Reserved
Set this bit to 0. The read value is
undefined.
RW
WO
AAAA6
Example bit 1
Functions vary with operating modes
WO
Example flag
RO
b2 b1
0 0 : XX function
0 1 : YY function
1 0 : Do not set this value.
1 1 : ZZ function
—
(b2)
No register bit. If necessary, set this bit to 0. The read value is
undefined.
—
—
(b3)
—
(b4)
AAAA5
AAAA7
0: Example detected
1: Example not detected
See Note 1
See Note 2
See Note 4
See Note 3
Notes:
1. Blank box: Set this bit to 0 or 1 according to the function.
0: Set this bit to 0.
1: Set this bit to 1.
X: Nothing is assigned to this bit.
2. RW: Read and write
RO: Read only
WO: Write only (the read value is undefined)
—
: Not applicable
3. Reserved bit: This bit field is reserved. Set this bit to a specified value. For RW bits, the written value is
read unless otherwise noted.
4.
y
No register bit(s): No register bit(s) is/are assigned to this field. If necessary, set to 0 for possible future
implementation.
y
Do not use this combination: Proper operation is not guaranteed when this value is set.
y
Functions vary with operating modes: Functions vary with peripheral operating modes. Refer to register
illustrations of the respective mode.
Содержание M16C Series
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