Section 20 Realtime Clock (RTC)
Rev.1.00 Dec. 13, 2005 Page 725 of 1286
REJ09B0158-0100
Bit Bit
Name
Initial
Value R/W
Description
2 ADJ 0
R/W
30-Second
Adjustment
Used for 30-second adjustment. When 1 is written to
this bit, a value up to 29 seconds is rounded down to
00 seconds, and a value of 30 seconds or more is
rounded up to 1 minute. The frequency divider circuits
(RTC prescaler and R64CNT) are also reset at this
time. This bit always returns 0 if read.
0: Normal clock operation
1: 30-second adjustment performed
1 RESET
0
R/W
Reset
The frequency divider circuits are initialized by writing 1
to this bit. When 1 is written to the RESET bit, the
frequency divider circuits (RTC prescaler and R64CNT)
are reset and the RESET bit is automatically cleared to
0 (i.e. does not need to be written with 0).
0: Normal clock operation
1: Frequency divider circuits are reset
0 START
1
R/W
Start
Bit
Stops and restarts counter (clock) operation.
0: Second, minute, hour, day, day-of-week, month, and
year counters are stopped
*
1: Second, minute, hour, day, day-of-week, month, and
year counters operate normally
*
Note:
*
The 64 Hz counter continues to operate unless
stopped by means of the RTCEN bit.
Summary of Contents for SH7780 Series
Page 2: ...Rev 1 00 Dec 13 2005 Page ii of l ...
Page 28: ...Rev 1 00 Dec 13 2005 Page xxviii of l ...
Page 50: ...Rev 1 00 Dec 13 2005 Page l of l ...
Page 82: ...Section 1 Overview Rev 1 00 Dec 13 2005 Page 32 of 1286 REJ09B0158 0100 ...
Page 122: ...Section 3 Instruction Set Rev 1 00 Dec 13 2005 Page 72 of 1286 REJ09B0158 0100 ...
Page 146: ...Section 4 Pipelining Rev 1 00 Dec 13 2005 Page 96 of 1286 REJ09B0158 0100 ...
Page 196: ...Section 6 Floating Point Unit FPU Rev 1 00 Dec 13 2005 Page 146 of 1286 REJ09B0158 0100 ...
Page 292: ...Section 9 L Memory Rev 1 00 Dec 13 2005 Page 242 of 1286 REJ09B0158 0100 ...
Page 492: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Dec 13 2005 Page 442 of 1286 REJ09B0158 0100 ...
Page 674: ...Section 15 Clock Pulse Generator CPG Rev 1 00 Dec 13 2005 Page 624 of 1286 REJ09B0158 0100 ...
Page 692: ...Section 16 Watchdog Timer and Reset Rev 1 00 Dec 13 2005 Page 642 of 1286 REJ09B0158 0100 ...
Page 726: ...Section 18 Timer Unit TMU Rev 1 00 Dec 13 2005 Page 676 of 1286 REJ09B0158 0100 ...
Page 1032: ...Section 25 Audio Codec Interface HAC Rev 1 00 Dec 13 2005 Page 982 of 1286 REJ09B0158 0100 ...
Page 1150: ...Section 28 General Purpose I O GPIO Rev 1 00 Dec 13 2005 Page 1100 of 1286 REJ09B0158 0100 ...
Page 1184: ...Section 29 User Break Controller UBC Rev 1 00 Dec 13 2005 Page 1134 of 1286 REJ09B0158 0100 ...
Page 1266: ...Section 31 Electrical Characteristics Rev 1 00 Dec 13 2005 Page 1216 of 1286 REJ09B0158 0100 ...
Page 1328: ...Appendix Rev 1 00 Dec 13 2005 Page 1278 of 1286 REJ09B0158 0100 ...
Page 1336: ...Rev 1 00 Dec 13 2005 Page 1286 of 1286 REJ09B0158 0100 ...
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Page 1340: ...SH7780 Hardware Manual ...