m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 437

• 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
20-6
Address
Notes 14 : Do not write to this register.
80
81
82
83
84
85
86
87
88
89
8A
8B
8C
8D
8E
8F
90
91
92
93
94
95
96
97
98
99
9A
9B
9C
9D
9E
9F
Access characteristics
State immediately after reset
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
WO
RW
RO
0
1
?
15 : This register is assigned only to the flash memory version. (Refer to “CHAPTER 19. FLASH MEMORY
External interrupt input read-out register
Flash memory control register (Note 15)
: 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.
: “0” immediately after reset.
: “1” immediately after reset.
: Undefined immediately after
reset.
VERSION.”) Nothing is assigned here in the mask ROM version.
D-A control register
Register name
D-A register 0
D-A register 1
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.”
Access characteristics
RW
(Note 14)
(Note 14)
(Note 14)
(Note 14)
(Note 14)
(Note 14)
(Note 14)
(Note 14)
(Note 14)
(Note 14)
(Note 14)
(Note 14)
(Note 14)
(Note 14)
(Note 14)
RW
RW
RO
RW
RW RW
RW
RO
b0
b7
0
State immediately after reset
0
0
?
0
00
00
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
16
16
0
0
0
0
0
1
b0