7906 Datasheet, PDF (412/531 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER

APPENDIX
Appendix 1. Memory assigment in SFR area
Access characteristics
RW : It is possible to read the bit state at reading. The written value becomes valid.
RO : It is possible to read the bit state at reading. The written value becomes invalid.
WO : 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.
State immediately after reset
0 : “0” immediately after reset.
1 : “1” immediately after reset.
? ^{: Undefined immediately after}
reset.
0 ^{: Always “0” at reading.}
1 : Always “1” at reading.
? : Always undefined at reading.
0 : “0” immediately after reset. Fix this bit to “0.”
Address
Register name
Access characteristics
b7
b0
A0 16
(Note 17)
A1 16
A2 16
(Note 17)
A3 16
A4 16
(Note 17)
A5 16
A6 16 Waveform output mode register
RW
A7 16
Dead-time timer
WO
A8 16 Three-phase output data register 0
RW
A9 16 Three-phase output data register 1
RW
AA 16 Position-data-retain function control register
RW RO RO RO
AB 16
AC 16
Serial I/O pin control register
RW RW RW RW
AD 16
AE 16 Port P2 pin function control register RW
RW RW RW RW
AF 16
B0 16
(Note 17)
B1 16
(Note 17)
B2 16
(Note 17)
B3 16
(Note 17)
B4 16
(Note 17)
B5 16
(Note 17)
B6 16
(Note 17)
B7 16
(Note 17)
B8 16
(Note 17)
B9 16
BA 16
(Note 17)
BB 16
(Note 17)
BC 16
Clock control register 0
RW RW RW RW (Note 18) RW RW
BD 16
(Note 17)
BE 16
(Note 17)
BF 16
(Note 17)
State immediately after reset
b7
b0
?
?
?
?
?
?
0016
?
0016
0016
?
0 00 0
?
000 00 00 0
?
0 ? ??0 00 0
?
?
?
?
?
?
?
?
?
?
?
?
?
0001 0 11 1
?
?
?
Notes 17 : Do not write to this register.
18 : After reset, these bits are allowed to be changed only once.
7906 Group User’s Manual Rev.2.0
20-7