Renesas 7700 FAMILY User Manual page 459

APPENDIX
Appendix 2. Memory assignment in SFR area
Access characteristics
RW : It is possible to read the bit state at reading. The written value becomes valid data.
: It is possible to read the bit state at reading. The written value becomes invalid.
RO
: The written value becomes valid data. It is impossible to read the bit state.
WO
: Nothing is assigned. It is impossible to read the bit state. The written value is ignored.
State immediately after a reset
0 : "0" immediately after a reset.
1 : "1" immediately after a reset.
? : Undefined immediately after
a reset.
Address Register name
60 Watchdog timer register
16
61
Watchdog timer frequency select register
16
62
16
63
16
64
16
65
16
66
16
67
16
68
16
69
16
6A
16
6B
16
6C
16
6D
16
6E
16
6F
16
70
A-D conversion interrupt control register
16
71
UART0 transmit interrupt control register
16
UART0 receive interrupt control register
72
16
UART1 transmit interrupt control register
73
16
UART1 receive interrupt control register
74
16
Timer A0 interrupt control register
75
16
Timer A1 interrupt control register
76
16
Timer A2 interrupt control register
77
16
Timer A3 interrupt control register
78
16
Timer A4 interrupt control register
79
16
7A Timer B0 interrupt control register
16
7B Timer B1 interrupt control register
16
Timer B2 interrupt control register
7C
16
7D INT interrupt control register
16 0
7E
16 INT interrupt control register
1
7F
INT interrupt control register
16
2
Notes 1: By writing dummy data to address 60
dummy data is not retained anywhere.
2: The value "FFF
20–8
0 : Always "0" at reading
: Always undefined at reading
?
0
: "0" immediately after a reset. Fix this bit to "0."
Access characteristics
b7
, a value "FFF
16
" is set tot the watchdog timer. (Refer to "Chapter 9. WATCHDOG TIMER.")
16
7751 Group User's Manual
State immediately after a reset
b0 b7
(Note 1)
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
" is set to the watchdog timer. The
16
? (Note 2)
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
? ?
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 0 0
?
0
0 0
?
0 0 0
?
0 0 0 0 0
? 0 0 0 0 0
?
0 0 0 0 0
b0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0