Epson S1C31W74 Technical Manual page 7

9.2 Clock Settings ................................................................................................................. 9-1
9.2.1 WDT2 Operating Clock ..................................................................................... 9-1
9.2.2 Clock Supply in DEBUG Mode ......................................................................... 9-1
9.3 Operations ...................................................................................................................... 9-2
9.3.1 WDT2 Control ................................................................................................... 9-2
9.3.2 Operations in HALT and SLEEP Modes............................................................ 9-3
9.4 Control Registers ............................................................................................................ 9-3
WDT2 Clock Control Register ................................................................................................... 9-3
WDT2 Control Register ............................................................................................................. 9-4
WDT2 Counter Compare Match Register ................................................................................. 9-5
10 Real-Time Clock (RTCA) ...........................................................................................10-1
10.1 Overview ...................................................................................................................... 10-1
10.2 Output Pin and External Connection ........................................................................... 10-1
10.2.1 Output Pin ...................................................................................................... 10-1
10.3 Clock Settings .............................................................................................................. 10-2
10.3.1 RTCA Operating Clock .................................................................................. 10-2
10.3.2 Theoretical Regulation Function .................................................................... 10-2
10.4 Operations ................................................................................................................... 10-3
10.4.1 RTCA Control ................................................................................................ 10-3
10.4.2 Real-Time Clock Counter Operations ............................................................ 10-4
10.4.3 Stopwatch Control ......................................................................................... 10-4
10.4.4 Stopwatch Count-up Pattern ........................................................................ 10-4
10.5 Interrupts ...................................................................................................................... 10-5
10.6 Control Registers ......................................................................................................... 10-6
RTCA Control Register (Low Byte) ........................................................................................... 10-6
RTCA Control Register (High Byte) .......................................................................................... 10-7
RTCA Second Alarm Register .................................................................................................. 10-7
RTCA Hour/Minute Alarm Register .......................................................................................... 10-8
RTCA Stopwatch Control Register ........................................................................................... 10-8
RTCA Second/1Hz Register ..................................................................................................... 10-9
RTCA Hour/Minute Register .................................................................................................... 10-10
RTCA Month/Day Register ...................................................................................................... 10-11
RTCA Year/Week Register ....................................................................................................... 10-11
RTCA Interrupt Flag Register .................................................................................................. 10-12
RTCA Interrupt Enable Register .............................................................................................. 10-13
11 Supply Voltage Detector (SVD2) ...............................................................................11-1
11.1 Overview ...................................................................................................................... 11-1
11.2 Input Pin and External Connection .............................................................................. 11-2
11.2.1 Input Pin ......................................................................................................... 11-2
11.2.2 External Connection ...................................................................................... 11-2
11.3 Clock Settings .............................................................................................................. 11-2
11.3.1 SVD2 Operating Clock ................................................................................... 11-2
11.3.2 Clock Supply in SLEEP Mode ....................................................................... 11-2
11.3.3 Clock Supply During Debugging ................................................................... 11-3
11.4 Operations ................................................................................................................... 11-3
11.4.1 SVD2 Control ................................................................................................. 11-3
11.4.2 SVD2 Operations ........................................................................................... 11-4
11.5 SVD2 Interrupt and Reset ............................................................................................ 11-5
11.5.1 SVD2 Interrupt ............................................................................................... 11-5
11.5.2 SVD2 Reset .................................................................................................... 11-5
11.6 Control Registers ......................................................................................................... 11-6
SVD2 Ch.n Clock Control Register .......................................................................................... 11-6
S1C31W74 TECHNICAL MANUAL
(Rev. 1.1)
Seiko Epson Corporation
CONTENTS
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