Oscen, Wds, WDF Oscf | Cypress CY14B108M, CY14B108K instruction

PRELIMINARY

CY14B108K, CY14B108M

Table 4. RTC Register Map[7]

Register

BCD Format Data[8]

Function/Range

CY14B108K

CY14B108M

D7

D6

D5

D4

D3

D2

D1

D0

0xFFFFF

0x7FFFF

10s

Years

Years

Years: 00–99

0xFFFFE

0x7FFFE

0

0

0

10s

Months

Months: 01–12

Months

0xFFFFD

0x7FFFD

0

0

10s Day of Month

Day Of Month

Day of Month: 01–31

0xFFFFC

0x7FFFC

0

0

0

0

0

Day of week

Day of week: 01–07

0xFFFFB

0x7FFFB

0

0

10s

Hours

Hours

Hours: 00–23

0xFFFFA

0x7FFFA

0

10s Minutes

Minutes

Minutes: 00–59

0xFFFF9

0x7FFF9

0

10s Seconds

Seconds

Seconds: 00–59

0xFFFF8

0x7FFF8

OSCEN

0

Cal Sign

Calibration (00000)

Calibration Values [9]

(0)

(0)

0xFFFF7

0x7FFF7

WDS

WDW (0)

WDT (000000)

Watchdog [9]

(0)

0xFFFF6

0x7FFF6

WIE (0)

AIE (0)

PFE (0)

0

H/L

P/L (0)

0

0

Interrupts [9]

(1)

0xFFFF5

0x7FFF5

M (1)

0

10s Alarm Date

Alarm Day

Alarm, Day of Month:

01–31

0xFFFF4

0x7FFF4

M (1)

0

10s Alarm Hours

Alarm Hours

Alarm, Hours: 00–23

0xFFFF3

0x7FFF3

M (1)

10

Alarm Minutes

Alarm Minutes

Alarm, Minutes:

00–59

0xFFFF2

0x7FFF2

M (1)

10 Alarm Seconds

Alarm, Seconds

Alarm, Seconds:

00–59

0xFFFF1

0x7FFF1

10s Centuries

Centuries

Centuries: 00–99

0xFFFF0

0x7FFF0

WDF

AF

PF

OSCF

0

CAL (0)

W (0)

R (0)

Flags [9]

Notes

7.Upper Byte D15-D8(CY14B108M) of RTC registers are reserved for future use

8.( ) designates values shipped from the factory.

9.This is a binary value, not a BCD value.

Document #: 001-47378 Rev. **

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Cypress CY14B108M, CY14B108K manual Oscen, Wds, WDF Oscf

Contents

Cypress Semiconductor Corporation FeaturesLogic Block Diagram1, 2 Functional Description Pinouts AutoStore Operation Device OperationSram Read Sram Write Software Store Hardware Recall Power UpHardware Store HSB Operation Software Recall Store Mode SelectionA15 A05 Mode Power Preventing AutoStore Noise Considerations Data Protection Best Practices Real Time Clock Operation Calibrating the Clock AlarmWatchdog Timer Flags Register Power MonitorInterrupt Register Interrupts AF Alarm Flag WDF Watchdog Timer FlagPF Power Fail Flag PFE Power Fail Enable WDF Oscf OscenWDS For the register is 0 to 0xFFFF9 0x7FFF9 Time Keeping Seconds 0xFFFF6 0x7FFF6 Interrupt Status/Control 0xFFFF5 0x7FFF5 Alarm DayTime-base Write only. Reading it always returns a This condition and write 0 to clear this flag 0xFFFF2 0x7FFF2 Alarm SecondsCenturies 0xFFFF0 0x7FFF0 Flags Watchdog Operating Range DC Electrical CharacteristicsRange Ambient Temperature Maximum Ratings AC Test Conditions Data Retention and EnduranceCapacitance Thermal Resistance RTC Capacitor Pin Voltage TOCS RTC Oscillator Time to Start RTC Backup CurrentHot Temperature 85 oC RTC Battery Pin Voltage Sram Write Cycle AC Switching CharacteristicsSwitching Waveforms Parameters Sram Read Cycle Data Input Input Data Valid Data Output High Impedance Output Data ValidStandby Active Address Address Valid Data Input Input Data Valid High Impedance Data Output Data Input Data OutputInput Data Valid High Impedance Not applicable for RTC register writes Parameters Description 20 ns 25 ns 45 ns Unit Min Max AutoStore/Power Up Recall Software Controlled Store and Recall Cycle Hardware Store Pulse Width To Output Active Time when write latch not setHardware Store Cycle Description 20 ns 25 ns 45 ns Unit Min Truth Table For Sram Operations For x8 ConfigurationFor x16 Configuration Inputs and Outputs Mode Power Nvsram Part Numbering Nomenclature CY14 B 108 K ZS P 20 X C TZS Tsop Ordering Information Pin Tsop II Package Diagrams 51-85160 Document History Sales, Solutions, and Legal InformationWorldwide Sales and Design Support Products PSoC Solutions New Data Sheet