Cypress Semiconductor CY14B101K Especificaciones descargar pdf (Pagina 23)

CY14B101K

Document Number: 001-06401 Rev. *J Page 23 of 29

RTC Characteristics

Parameter Description Test Conditions Min Max Unit

BAK

[26]

RTC Backup Current Commercial 300 nA

Industrial 350 nA

RTCbat

[27]

RTC Battery Pin Voltage 1.8 3.3 V

RTCcap

[28]

RTC Capacitor Pin Voltage 1.2 2.7 V

tOCS RTC Oscillator Time to Start At Min Temperature from Power up or Enable 10 sec

At 25°C Temperature from Power up or Enable 5 sec

Truth Table For SRAM Operations

HSB should remain HIGH for SRAM Operations.

CE WE OE Inputs and Outputs Mode Power

H X X High Z Deselect/Power down Standby

L H L Data Out (DQ

–DQ

); Read Active

L H H High Z Output Disabled Active

L L X Data in (DQ

–DQ

); Write Active

Notes

26. From either V

RTCcap

or V

RTCbat.

27. Typical = 3.0V during normal operation.

28. Typical = 2.4V during normal operation.

Not Recommended for New Designs

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Cypress Semiconductor CY14B101K Especificaciones Pagina 23