APPENDIX A LIST OF PERIPHERAL CIRCUIT CONTROL REGISTERS
AP-A-4
Seiko Epson Corporation
S1C31D50/D51 TECHNICAL MANUAL
(Rev. 2.00)
Address
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
0x0020
00cc
RTCAMON
(RTCA Month/Day
Register)
15–13 –
0x0
–
R
–
12 RTCMOH
0
H0
R/W
11–8 RTCMOL[3:0]
0x1
H0
R/W
7–6 –
0x0
–
R
5–4 RTCDH[1:0]
0x0
H0
R/W
3–0 RTCDL[3:0]
0x1
H0
R/W
0x0020
00ce
RTCAYAR
(RTCA Year/Week
Register)
15–11 –
0x00
–
R
–
10–8 RTCWK[2:0]
0x0
H0
R/W
7–4 RTCYH[3:0]
0x0
H0
R/W
3–0 RTCYL[3:0]
0x0
H0
R/W
0x0020
00d0
RTCAINTF
(RTCA Interrupt Flag
Register)
15 RTCTRMIF
0
H0
R/W Cleared by writing 1.
14 SW1IF
0
H0
R/W
13 SW10IF
0
H0
R/W
12 SW100IF
0
H0
R/W
11–9 –
0x0
–
R
–
8
ALARMIF
0
H0
R/W Cleared by writing 1.
7
T1DAYIF
0
H0
R/W
6
T1HURIF
0
H0
R/W
5
T1MINIF
0
H0
R/W
4
T1SECIF
0
H0
R/W
3
T1_2SECIF
0
H0
R/W
2
T1_4SECIF
0
H0
R/W
1
T1_8SECIF
0
H0
R/W
0
T1_32SECIF
0
H0
R/W
0x0020
00d2
RTCAINTE
(RTCA Interrupt En-
able Register)
15 RTCTRMIE
0
H0
R/W –
14 SW1IE
0
H0
R/W
13 SW10IE
0
H0
R/W
12 SW100IE
0
H0
R/W
11–9 –
0x0
–
R
8
ALARMIE
0
H0
R/W
7
T1DAYIE
0
H0
R/W
6
T1HURIE
0
H0
R/W
5
T1MINIE
0
H0
R/W
4
T1SECIE
0
H0
R/W
3
T1_2SECIE
0
H0
R/W
2
T1_4SECIE
0
H0
R/W
1
T1_8SECIE
0
H0
R/W
0
T1_32SECIE
0
H0
R/W
0x0020 0100–0x0020 0106
Supply Voltage Detector (SVD3)
Address
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
0x0020
0100
SVD3CLK
(SVD3 Clock Control
Register)
15–9 –
0x00
–
R
–
8
DBRUN
1
H0
R/WP
7
–
0
–
R
6–4 CLKDIV[2:0]
0x0
H0
R/WP
3–2 –
0x0
–
R
1–0 CLKSRC[1:0]
0x0
H0
R/WP
0x0020
0102
SVD3CTL
(SVD3 Control
Register)
15 VDSEL
0
H1
R/WP –
14–13 SVDSC[1:0]
0x0
H0
R/WP Writing takes effect when the
SVD3CTL.SVDMD[1:0] bits
are not 0x0.
12–8 SVDC[4:0]
0x1e
H1
R/WP –
7–4 SVDRE[3:0]
0x0
H1
R/WP
3
EXSEL
0
H1
R/WP
2–1 SVDMD[1:0]
0x0
H0
R/WP
0
MODEN
0
H1
R/WP