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REAL TIME CLOCK
S3C2416X RISC MICROPROCESSOR
13-4
1.2.5 Tick time interrupt
The RTC tick time is used for interrupt request. The TICNT register has an interrupt enable bit and the count value
for the interrupt. The count value reaches ‘0’ when the tick time interrupt occurs. Then the period of interrupt is as
follows:
•
Tick clock frequency (Hz) = RTC clock / 2
n
- n: RTC clock divide value(decided by RTCCON[8:4] )
•
Resolution = 1 / Tick clock frequency
•
Clock range = Resolution * 2
32
Tick counter clock source
selection
Tick clock
source frequency(Hz)
Clock range (s)
Resolution (ms)
TICSel = 1
32768 (2^15)
0 ~ 2
17
0.03
TICsel2 = 0, TICSel =0
16384 (2^14)
0 ~ 2
18
0.06
TICsel2 = 1, TICSel =0
8192 (2^13)
0 ~ 2
19
0.12
TICsel2 = 2, TICSel =0
4096 (2^12)
0 ~2
20
0.24
TICsel2 = 3, TICSel =0
2048 (2^11)
0 ~ 2
21
0.49
TICsel2 = 6, TICSel =0
1024 (2^10)
0 ~ 2
22
0.97
TICsel2 = 7, TICSel =0
512 (2^9)
0 ~ 2
23
1.95
TICsel2 = 8, TICSel =0
256 (2^8)
0 ~ 2
24
3.90
TICsel2 = 4, TICSel =0
128 (2^7)
0 ~ 2
25
7.81
TICsel2 = 9, TICSel =0
64 (2^6)
0 ~ 2
26
15.62
TICsel2 = 10, TICSel =0
32 (2^5)
0 ~ 2
27
31.25
TICsel2 = 11, TICSel =0
16 (2^4)
0 ~ 2
28
62.50
TICsel2 = 12, TICSel =0
8 (2^3)
0 ~ 2
29
125
TICsel2 = 13, TICSel =0
4 (2^2)
0 ~ 2
30
250
TICsel2 = 14, TICSel =0
2
0 ~2
31
500
TICsel2 = 5, TICSel =0
1
0 ~2
32
1000
NOTE:
This RTC time tick may be used for real time operating system (RTOS) kernel time tick.
If time tick is generated by the RTC time tick, the time related function of RTOS will always synchronized in real time.
Summary of Contents for S3C2416
Page 122: ...BUS MATRIX EBI S3C2416X RISC MICROPROCESSOR 3 4 NOTES ...
Page 204: ...DMA CONTROLLER S3C2416X RISC MICROPROCESSOR 8 18 NOTES ...
Page 284: ...WATCHDOG TIMER S3C2416X RISC MICROPROCESSOR 11 6 NOTES ...
Page 320: ...REAL TIME CLOCK S3C2416X RISC MICROPROCESSOR 13 16 NOTES ...
Page 344: ...UART S3C2416X RISC MICROPROCESSOR 14 24 NOTES ...
Page 380: ...USB2 0 DEVICE S3C2416X RISC MICROPROCESSOR 16 34 NOTES ...
Page 432: ...2D S3C2416X RISC MICROPROCESSOR 18 38 NOTES ...
Page 446: ...HS_SPI CONTROLLER S3C2416X RISC MICROPROCESSOR 19 14 NOTES ...
Page 604: ...S3C2416X RISC MICROPROCESSOR S3C2416X RISC MICROPROCESSOR 23 22 NOTES ...
Page 638: ...PCM AUDIO INTERFACE S3C2416X RISC MICROPROCESSOR 25 18 NOTES ...
Page 670: ...ELECTRICAL DATA S3C2416X RISC MICROPROCESSOR 26 32 NOTES ...