m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 439

• Manufacturer Part Number: m37905
• Description: Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
• Manufacturer: Renesas Electronics Corporation.

APPENDIX
Appendix 1. Memory assigment in SFR area
20-8
Address
Note 18: The access characteristics at addresses C6
Access characteristics
State immediately after reset
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
CA
CB
CC
CD
CE
CF
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
DA
DB
DC
DD
DE
DF
WO
RW
RO
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
0
1
?
: 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.
: The written value becomes valid. It is impossible to read the bit state.
: Nothing is assigned. It is impossible to read the bit state. The written value becomes invalid.
Comparator function select register 0
Comparator function select register 1
: “0” immediately after reset.
: “1” immediately after reset.
: Undefined immediately after
reset.
(Refer to “CHAPTER 7. TIMER A.”)
Comparator result register 0
Comparator result register 1
Timer A6 mode register
Timer A7 mode register
Timer A8 mode register
Timer A5 mode register
Timer A9 mode register
A-D control register 2
Up-down register 1
Timer A0
Timer A1
Timer A2
Timer A5 register
Timer A6 register
Timer A7 register
Timer A8 register
Timer A9 register
Register name
1
1
1
register
register
register
7905 Group User’s Manual Rev.1.0
0
1
?
0
b7
: Always “0” at reading.
: Always “1” at reading.
: Always undefined at reading.
: “0” immediately after reset. Fix this bit to “0.”
WO
Access characteristics
16
to CF
(Note 18)
(Note 18)
(Note 18)
(Note 18)
(Note 18)
(Note 18)
(Note 18)
(Note 18)
(Note 18)
(Note 18)
16
WO
WO
WO
WO
WO
WO
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
vary according to the timer A’s operating mode.
RW
b0
b7
0
0
0
0
0
0
State immediately after reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
00
00
00
00
00
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
16
16
16
16
16
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
b0