RESET
3.3 State of internal area
Register name
Address
Access characteristics
State immediately after reset
b7
b0
b7
b0
(Note 21)
(Note 21)
(Note 21)
(Note 21)
(Note 21)
(Note 21)
(Note 21)
(Note 21)
(Note 21)
(Note 21)
(Note 21)
(Note 21)
(Note 21)
(Note 21)
(Note 21)
(Note 21)
E016
E116
E216
E316
E416
E516
E616
E716
E816
E916
EA16
EB16
EC16
ED16
EE16
EF16
F016
F116
F216
F316
F416
F516
F616
F716
F816
F916
FA16
FB16
FC16
FD16
FE16
FF16
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
(Note 21)
(Note 21)
Timer A5 interrupt control register
Timer A6 interrupt control register
Timer A7 interrupt control register
Timer A8 interrupt control register
Timer A9 interrupt control register
?
?
?
?
?
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
RW
RW
RW
RW
RW
?
?
?
INT
INT
INT
5
6
7
interrupt control register
interrupt control register
interrupt control register
?
?
?
0
0
0
0
0
0
RW
RW
RW
0
0
0
0
0
0
0
0
0
0
0
0
Notes 21 : Do not write to this register.
➀ Internal RAM area
At hardware reset ................................................................................. Retains the state immediately before reset (Note 22).
At software reset.................................................................................................... Retains the state immediately before reset.
At termination of the stop or wait mode
(when hardware reset is used for the termination.)....................................Retains the state immediately before the STP or
WIT instruction is executed.
At power-on reset..................................................................................................................................................... Undefined.
Notes 22 : When a reset operation starts while writing to the internal RAM area is in process, the microcomputer will be
reset before the completion of writing. Accordingly, the contents of the area where the writing was in process
will become undefined.
Fig. 3.3.9 State of SFR and internal RAM areas immediately after reset (8)
7906 Group User’s Manual Rev.2.0
3-14
RENESAS [ RENESAS TECHNOLOGY CORP ]
