B-4
Seiko Epson Corporation
S1C31D50 TECHNICAL MANUAL
(Rev. 1.00)
0x0020 00a0
–
0x0020 00a4
Watchdog Timer (WDT2)
Address
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
0x0020
00a0
WDT2CLK
(WDT2 Clock
Control Register)
15
–
9
–
0x00
–
R
–
8
DBRUN
0
H0
R/WP
7
–
6
–
0x0
–
R
5
–
4
CLKDIV[1:0]
0x0
H0
R/WP
3
–
2
–
0x0
–
R
1
–
0
CLKSRC[1:0]
0x0
H0
R/WP
0x0020
00a2
WDT2CTL
(WDT2 Control
Register)
15
–
11
–
0x00
–
R
–
10
–
9
MOD[1:0]
0x0
H0
R/WP
8
STATNMI
0
H0
R
7
–
5
–
0x0
–
R
4
WDTCNTRST
0
H0
WP
Always read as 0.
3
–
0
WDTRUN[3:0]
0xa
H0
R/WP
–
0x0020
00a4
WDT2CMP
(WDT2 Counter
Com- pare Match
Register)
15
–
10
–
0x00
–
R
–
9
–
0
CMP[9:0]
0x3ff
H0
R/WP
0x0020 00c0
–
0x0020 00d2
Real-time Clock (RTCA)
Address
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
0x0020
00c0
RTCACTLL
(RTCA Control
Register (Low
Byte))
7
–
0
–
R
–
6
RTCBSY
0
H0
R
5
RTCHLD
0
H0
R/W
Cleared by setting the
RTCACTLL.RTCRST bit to
1.
4
RTC24H
0
H0
R/W
–
3
–
0
–
R
2
RTCADJ
0
H0
R/W
Cleared by setting the
RTCACTLL.RTCRST bit to
1.
1
RTCRST
0
H0
R/W
–
0
RTCRUN
0
H0
R/W
0x0020
00c2
RTCAALM1
(RTCA Second
Alarm Register)
15
–
0
–
R
–
14
–
12 RTCSHA[2:0]
0x0
H0
R/W
11
–
8
RTCSLA[3:0]
0x0
H0
R/W
7
–
0
–
0x00
–
R
0x0020
00c4
RTCAALM2
(RTCA
Hour/Minute
Alarm Register)
15
–
0
–
R
–
14
RTCAPA
0
H0
R/W
13
–
12 RTCHHA[1:0]
0x0
H0
R/W
11
–
8
RTCHLA[3:0]
0x0
H0
R/W
7
–
0
–
R
6
–
4
RTCMIHA[2:0]
0x0
H0
R/W
3
–
0
RTCMILA[3:0]
0x0
H0
R/W
0x0020
00c6
RTCASWCTL
(RTCA Stopwatch
Control Register)
15
–
12 BCD10[3:0]
0x0
H0
R
–
11
–
8
BCD100[3:0]
0x0
H0
R
7
–
5
–
0x0
–
R
4
SWRST
0
H0
W
Read as 0.
3
–
1
–
0x0
–
R
–
0
SWRUN
0
H0
R/W
Summary of Contents for S1C31D50
Page 461: ...25 1 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 25 Package TQFP12 48PIN ...
Page 462: ...25 2 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 QFP13 64PIN ...
Page 463: ...25 3 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 TQFP14 80PIN ...
Page 464: ...25 4 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 QFP15 100PIN ...