m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 7
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m37905
Manufacturer Part Number
m37905
Description
Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.M37905.pdf
(565 pages)
Available stocks
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Part Number
Manufacturer
Quantity
Price
Part Number:
m37905F8CSP
Manufacturer:
MIT
Quantity:
20 000
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4. Register structure
2
The view of the register structure is described below:
XXX register (address XX
4
1
2
3
Bit
0
1
2
3
4
5
6
7
Invalid for that function or mode.
Blank
0
1
0
1
Undefined
RW
RO
WO
—
• • • select bit
• • • select bit
• • • flag
Fix this bit to “0.”
This bit is invalid in … mode.
Nothing is assigned.
The value is “0” at reading.
: Invalid depending on the mode or state. It may be “0” or “1.”
: Nothing is assigned.
: Set to “0” or “1” according to the usage.
: Set to “0” at writing.
: Set to “1” at writing.
: It is possible to read the bit state at reading. The written value becomes valid.
: It is possible to read the bit state at reading. The written value becomes invalid. Accordingly, the written
: The written value becomes valid. It is impossible to read the bit state. The value is undefined at reading.
: It is impossible to read the bit state. The value is undefined at reading.
value may be “0” or “1.”
However, when [“0” at reading”] is indicated in the “Function” or “Note” column, the bit is always “0” at
reading. (See ] 5 above.)
However, when [“0” at reading”] is indicated in the “Function” or “Note” column, the bit is always “0” at
reading. (See ] 6 above.)
The written value becomes invalid. Accordingly, the written value may be “0” or “1.”
Bit name
: “0” immediately after reset.
: “1” immediately after reset.
: Undefined immediately after reset.
16
)
6
5
b2 b1
0 : …
1 : …
The value is “0” at reading.
0 0 : …
0 1 : …
1 0 : …
1 1 : …
0 : …
1 : …
Function
2
b7 b6 b5 b4 b3 b2 b1 b0
4
X
Undefined
Undefined
0
At reset
0
0
0
0
0
0
1
R/W
WO
RW
RW
RW
RW
RO
—
—
3
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