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• Guide to Understanding the Register Table
(1) Bit number: Indicates a register’s bit number.
(2) Register border: The registers enclosed with thick border lines must be accessed in halfwords or words.
(3) Status after reset: The initial state of each register after reset is indicated in hexadecimal or binary.
(4) Status after reset: The initial state of each register after reset is indicated bitwise.
0: This bit is “0” after reset.
1: This bit is “1” after reset.
?: This bit is undefined after reset.
(5) The shaded bits mean that they have no functions assigned.
(6) Read conditions:
R: This bit can be accessed for read.
?: The value read from this bit is undefined. (Reading this bit has no effect.)
0: The value read from this bit is always “0”.
1: The value read from this bit is always “1”.
(7) Write conditions:
W: This bit can be accessed for write.
N: This bit is write protected.
0: To write to this bit, always write “0”.
1: To write to this bit, always write “1”.
–: Writing to this bit has no effect. (It does not matter whether this bit is set to “0” or “1” by writing in software.)
Note: Care must be taken when writing to this bit. See Note in each register table.
XXXRegister(XXX)
<Address: H’XXXX XXXX>
b0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
b15
AAA
BBB
CCC
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
<After reset: H’0000>
b
Bit name
Function
R
W
0
AAA
0 :
• • •
• • •
• • •
bit
R
W
• • •
• • •
• • •
bit
1 :
• • •
• • •
• • •
bit
1
BBB
0 :
• • •
• • •
• • •
bit
R
W
• • •
• • •
• • •
bit
1 :
• • •
• • •
• • •
bit
2
CCC
0 :
• • •
• • •
• • •
bit
R (Note 1)
• • •
• • •
• • •
bit
1 :
• • •
• • •
• • •
bit
3–15
No function assigned. Fix to “0”.
0
0
Note 1: Only writing “0” is effective. Writing “1” has no effect, in which case the bit retains the value it had before the write.
• Notation of active-low pins (signals)
The symbol “#” suffixed to the pin (or signal) names means that the pins (or signals) are active-low.
Before Use
(2)
(4)
(6) (7)
(3)
(1)
(5)
Содержание M32R/ECU Series
Страница 17: ...12 This page is blank for reasons of layout...
Страница 18: ...CHAPTER 1 OVERVIEW 1 1 Outline of the 32180 Group 1 2 Block Diagram 1 3 Pin Functions 1 4 Pin Assignments...
Страница 712: ...CHAPTER 18 OSCILLATOR CIRCUIT 18 1 Oscillator Circuit 18 2 Clock Generator Circuit...
Страница 794: ...CHAPTER 22 TYPICAL CHARACTERISTICS...
Страница 795: ...22 22 2 32180 Group User s Manual Rev 1 0 TYPICAL CHARACTERISTICS To be written at a later time...
Страница 796: ...APPENDIX 1 MECHANICAL SPECIFICAITONS Appendix 1 1 Dimensional Outline Drawing...
Страница 798: ...APPENDIX 2 INSTRUCTION PROCESSING TIME Appendix 2 1 32180 Instruction Processing Time...
Страница 802: ...APPENDIX 3 PROCESSING OF UNUSED PINS Appendix 3 1 Example Processing of Unused Pins...