m5m51016btp Renesas Electronics Corporation., m5m51016btp Datasheet - Page 5

• Manufacturer Part Number: m5m51016btp
• Description: Renesas 16-bit Single-chip Microcomputer M16c Family / M16c/20 Series
• Manufacturer: Renesas Electronics Corporation.

The figure of each register configuration describes its functions and attributes as follows :
*1
*2
*3
Blank: Set to “0” or “1” according to intended use
0:
1:
X:
R:
W:
Terms to use here are explained as follows.
Nothing is assigned
Must not be set
Reserved bit
Function varies with each operation mode
Always set to “0” in A mode.
Invalid in A mode
Valid when bit A=“0”
Nothing is assigned to the bit concerned. When write, set “0” for new function in
future plan.
Not select. The operation at having selected is not guaranteed.
Reserved bit. Set the specified value.
Bit function changes according to the mode of peripheral functions.
Set the corresponding bit to “0” in A mode.
The bit concerned has no function in A mode. Set the specified value.
When bit A is “1”, the bit concerned has no function. When bit A is “0”, the bit concerned has function.
Set to “0”
Set to “1”
Nothing is assigned
Read
O.....Possible to read
X.....Impossible to read
–.....Nothing is assigned
Write
O.....Possible to write
X.....Written value is invalid
–.....Nothing is assigned
X X X r e g i s t e r
When write, value can be "0" or "1"
b 7
b 6
b 5
b 4
b 3
0
b 2
b 1
b 0
N o t h i n g i s a s s i g n e d .
I n a n a t t e m p t t o w r i t e t o t h i s b i t , w r i t e " 0 " . T h e v a l u e , i f r e a d , t u r n s o u t t o b e i n d e t e r m i n a t e .
B i t s y m b o l
X X X 0
X X X 1
R e s e r v e d b i t
X X X 4
X X X 5
X X X 6
X X X 7
S y m b o l
X X X
X X X s e l e c t b i t
X X X f l a g
F u n c t i o n v a r i e s w i t h e a c h o p e r a t i o n m o d e
*1
A d d r e s s
B i t n a m e
X X X
W h e n r e s e t
b 1 b 0
0 0 : X X X
0 1 : X X X
1 0 : M u s t n o t b e s e t
1 1 : X X X
M u s t a l w a y s b e s e t t o " 0 "
0 0
1 6
F u n c t i o n
R
W
*2
*3