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RTC Register |
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| BCD Format Data |
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| Function / Range | ||||
| D7 |
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| D5 |
| D4 | D3 |
| D2 |
| D1 |
| D0 | ||
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| 0x1FFFF |
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| 10s Years |
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| Years |
| Years: | |||||
| 0x1FFFE | 0 | 0 |
| 0 |
| 10s |
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| Months |
| Months: | |||||
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| Months |
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| 0x1FFFD | 0 | 0 |
| 10s | Day of |
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| Day of Month |
| Day of Month: | ||||||
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| 0x1FFFC | 0 | 0 |
| 0 |
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| Day of Week |
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| 0x1FFFB | 0 | 0 |
| 10s | Hours |
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| Hours: | ||||||
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| 0x1FFFA | 0 |
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| 10s Minutes |
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| Minutes: | ||||||
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| 0x1FFF9 | 0 |
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| 0x1FFF8 | OSCEN | 0 |
| Cal |
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| Calibration values* | |||||||
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| 0x1FFF7 | WDS | WDW |
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| 0x1FFF6 | WIE [0] | AIE [0] |
| PFE |
| 0 | H/L |
| P/L [0] |
| 0 |
| 0 | Interrupts* | ||
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| 0x1FFF5 | M | 0 |
| 10s Alarm Date |
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| Alarm Day |
| Alarm, Day of Month: | |||||||
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| 0x1FFF4 | M | 0 |
| 10s Alarm Hours |
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| Alarm Hours |
| Alarm, hours: | |||||||
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| 0x1FFF3 | M |
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| Alarm Minutes |
| Alarm, minutes: | ||||||
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| 0x1FFF2 | M |
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| Alarm Seconds |
| Alarm, seconds: | |||||||
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| 10s Centuries |
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| Centuries |
| Centuries: | |||||||
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| 0x1FFF0 | WDF |
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| PF |
| OSCF | 0 |
| CAL[0] |
| W[0] |
| R[0] | Flags* |
*A binary value, not a BCD value.
0 - Not implemented, reserved for future use.
Default Settings of nonvolatile Calibration and Interrupt registers from factory Calibration Register=00h
Interrupt Register=00h
The User should configure to desired value at startup or during operation and the value is then retained during a power failure. [ ] designates values shipped from the factory. See “Stopping And Starting The RTC Oscillator” on page 14 .
Document #: | Page 17 of 23 |
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