CY14B101K CYPRESS [Cypress Semiconductor], CY14B101K Datasheet - Page 10

• Manufacturer Part Number: CY14B101K
• Description: 1 Mbit (128K x 8) nvSRAM With Real-Time Clock
• Manufacturer: CYPRESS [Cypress Semiconductor]

Table 3. RTC Register Map
Table 4. Register Map Detail
Note
Document #: 001-06401 Rev. *E
0x1FFFD
0x1FFFC
0x1FFFF
0x1FFFE
0x1FFFB
0x1FFFA
4. This register contains a binary, not BCD, value. .
Register
0x1FFF9
0x1FFF8 OSCEN
0x1FFF7
0x1FFF6
0x1FFF5
0x1FFF4
0x1FFF3
0x1FFF2
0x1FFF1
0x1FFF0
0x1FFFE
0x1FFFD
0x1FFFC
0x1FFFF
Contains the lower two BCD digits of the year. Lower nibble contains the value for years; upper nibble contains the
value for 10s of years. Each nibble operates from 0 to 9. The range for the register is 0 – 99.
Contains the BCD digits of the month. Lower nibble contains the lower digit and operates from 0 to 9; upper nibble
(one bit) contains the upper digit and operates from 0 to 1. The range for the register is 1 – 12.
Contains the BCD digits for the date of the month. Lower nibble contains the lower digit and operates from 0 to 9;
upper nibble contains the upper digit and operates from 0 to 3. The range for the register is 1 – 31. Leap years are
automatically adjusted for.
Lower nibble contains a value that correlates to day of the week. Day of the week is a ring counter that counts from
1 to 7 then returns to 1. The user must assign meaning to the day value, as the day is not integrated with the date.
WDS
WDF
WIE
D7
M
M
M
M
0
0
0
0
0
D7
D7
D7
D7
0
0
0
WDW
10s Centuries
AIE
D6
AF
0
0
0
0
0
0
0
10s Years
10 Alarm Minutes
10 Alarm Minutes
10s Seconds
10s Minutes
10s Day of Month
Cal Sign
10s Alarm Hours
10s Alarm Date
D6
D6
D6
D6
PFE
0
0
0
D5
PF
0
0
10s Hours
10s Years
Months
OSCF
10s
D4
0
0
BCD Format Data
D5
D5
D5
D5
10s Day of Month
0
0
PRELIMINARY
H/L
D3
0
0
Time Keeping – Months
10s Month
Time Keeping – Years
Time Keeping – Date
WDT
Time Keeping – Day
Calibration
D4
D4
D4
D4
0
CAL
Alarm, Seconds
P/L
D2
Alarm Minutes
Day Of Month
Alarm Hours
Alarm Day
Centuries
Seconds
Minutes
Months
Hours
Years
Day of week
D1
W
0
D3
D3
D3
D3
0
D0
R
0
D2
D2
D2
D2
Day of Month
Months
Alarm, Day of Month: 01 – 31
Years
Alarm, Seconds: 00 – 59
Alarm, Minutes: 00 – 59
Day of Week
Day of Month: 01 – 31
Alarm, Hours: 00 – 23
Day of week: 01 – 07
Calibration Values
Centuries: 00 – 99
Seconds: 00 – 59
Function/Range
Minutes: 00 – 59
Months: 01 – 12
Hours: 00 – 23
Years: 00 – 99
D1
D1
D1
D1
Watchdog
Interrupts
Flags
CY14B101K
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D0
D0
D0
D0
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