APPENDIX
Appendix 1. Memory assigment in SFR area
Access characteristics
: 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.
RW
RO
WO
: Nothing is assigned. It is impossible to read the bit state. The written value becomes invalid.
State immediately after reset
: “0” immediately after reset.
: “1” immediately after reset.
: Undefined immediately after
reset.
0
1
?
: Always “0” at reading.
0
1
?
0
: Always “1” at reading.
: Always undefined at reading.
: “0” immediately after reset. Fix this bit to “0.”
Register name
Address
Access characteristics
State immediately after reset
b7
b7
b0
b0
2016
2116
2216
2316
2416
2516
2616
2716
2816
2916
2A16
2B16
2C16
2D16
2E16
2F16
3016
3116
3216
3316
(Note 3)
(Note 3)
?
?
A-D register 0
A-D register 1
A-D register 2
A-D register 3
A-D register 4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
?
?
0
0
0
0
0
(Note 3)
(Note 3)
(Note 3)
?
?
?
(Note 3)
(Note 3)
(Note 3)
(Note 3)
(Note 3)
(Note 4)
(Note 4)
(Note 4)
?
?
?
?
?
?
?
?
(Note 4)
(Note 4)
(Note 4)
RW
?
0016
?
?
?
UART0 transmit/receive mode register
UART0 baud rate register (BRG0)
WO
WO
UART0 transmit buffer register
WO
RW
RO
3416 UART0 transmit/receive control register 0
0
0
0
0
RW
RO
RO
RO
RW
RO
0
0
0
0
0
0
1
0
0
1
0
0
UART0 transmit/receive control register 1
RW
3516
3616
3716
3816
3916
3A16
3B16
3C16
3D16
3E16
3F16
?
UART0 receive buffer register
0
0
0
0
0
0
0
?
UART1 transmit/receive mode register
UART1 baud rate register (BRG1)
RW
WO
WO
0016
?
?
UART1 transmit buffer register
WO
RW
RO
?
0
0
0
0
UART1 transmit/receive control register 0
UART1 transmit/receive control register 1
1
0
RW
RO
RO
RO
RW
RO
0
0
0
0
0
0
0
1
0
0
RW
?
UART1 receive buffer register
0
0
0
0
0
0
0
?
Notes 3: The access characteristics at addresses 2016 to 2916 vary according to the contents of the comparator function select
register 0 (address DC16). (Refer to “CHAPTER 12. A-D CONVERTER.”)
4: Do not write to this register.
7906 Group User’s Manual Rev.2.0
20-3
RENESAS [ RENESAS TECHNOLOGY CORP ]
