CY14B104K_1106 Datasheet, PDF (11/35 Pages) Cypress Semiconductor – 4-Mbit (512 K x 8/256 K x 16) nvSRAM with Real Time Clock 25 ns and 45 ns access times

CY14B104K, CY14B104M
Table 3. RTC Register Map ^[9]
Register
CY14B104K CY14B104M
0x7FFFF
0x3FFFF
0x7FFFE
0x3FFFE
0x7FFFD
0x3FFFD
0x7FFFC
0x3FFFC
0x7FFFB
0x3FFFB
0x7FFFA
0x3FFFA
0x7FFF9
0x3FFF9
0x7FFF8
0x3FFF8
0x7FFF7
0x3FFF7
0x7FFF6
0x3FFF6
0x7FFF5
0x3FFF5
0x7FFF4
0x3FFF4
0x7FFF3
0x3FFF3
0x7FFF2
0x3FFF2
0x7FFF1
0x3FFF1
0x7FFF0
0x3FFF0
D7
0
0
0
0
0
0
OSCEN (0)
WDS (0)
WIE (0)
M (1)
M (1)
M (1)
M (1)
WDF
BCD Format Data^[10]
D6
D5
D4
D3
D2
D1
10s years
Years
0
0
10s months
Months
0
10s day of month
Day of month
0
0
0
0
Day of week
0
10s hours
Hours
10s minutes
Minutes
10s seconds
Seconds
0
Cal sign (0)
Calibration (00000)
WDW (0)
WDT (000000)
AIE (0)
PFE (0)
0
H/L (1)
P/L (0)
0
0
10s alarm date
Alarm day
0
10s alarm hours
Alarm hours
10s alarm minutes
Alarm minutes
10s alarm seconds
Alarm, seconds
10s Centuries
AF
PF
OSCF^[12]
0
Centuries
CAL (0)
W (0)
D0
0
R (0)
Function/Range
Years: 00–99
Months: 01–12
Day of month: 01–31
Day of week: 01–07
Hours: 00–23
Minutes: 00–59
Seconds: 00–59
Calibration values ^[11]
Watchdog ^[11]
Interrupts ^[11]
Alarm, day of month: 01–31
Alarm, hours: 00–23
Alarm, minutes: 00–59
Alarm, seconds: 00–59
Centuries: 00–99
Flags^[11]
Notes
9. Upper byte D₁₅–D₈ (CY14B104M) of RTC registers are reserved for future use.
10. ( ) designates values shipped from the factory.
11. This is a binary value, not a BCD value.
12. When user resets OSCF flag bit, the flags register will be updated after t_RTCp time.
Document #: 001-07103 Rev. *U
Page 11 of 35
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