Cypress CY14B101P manual AC Switching Characteristics

Page 24

PRELIMINARY

CY14B101P

Table 12. RTC Characteristics

Parameters

Description

Test Conditions

Min

Typ

Max

Units

I

[7]

RTC Backup Current

Room Temperature (25oC)

300

nA

BAK

Hot Temperature (85oC)

450

nA

VRTCbat

RTC Battery Pin Voltage

1.8

3.0

3.3

V

VRTCcap

RTC Capacitor Pin Voltage

1.5

3.0

3.6

V

tOCS

RTC Oscillator Time to Start

1

2

sec

AC Switching Characteristics

Cypress

40 MHz

25 MHz

Alt. Parameter

Description

(RDRTC Instruction)

Unit

Parameter

Min

Max

Min

Max

fSCK

fSCK

Clock Frequency, SCK

40

25

MHz

tCL

tWL

Clock Pulse Width LOW

11

18

ns

tCH

tWH

Clock Pulse Width HIGH

11

18

ns

tCS

tCE

HIGH Time

20

20

ns

CS

tCSS

tCES

Setup Time

10

10

ns

CS

tCSH

tCEH

Hold Time

10

10

ns

CS

tSD

tSU

Data In Setup Time

5

5

ns

tHD

tH

Data In Hold Time

5

5

ns

tHH

tHD

Hold Time

5

5

ns

HOLD

tSH

tCD

Setup Time

5

5

ns

HOLD

tCO

tV

Output Valid

9

15

ns

tHHZ

tHZ

to Output HIGH Z

15

15

ns

HOLD

tHLZ

tLZ

to Output LOW Z

15

15

ns

HOLD

tOH

tHO

Output Hold Time

0

0

ns

tHZCS

tDIS

Output Disable Time

25

25

ns

Notes

7. Current drawn from either VRTCcap or VRTCbat when VCC < VSWITCH.

Document #: 001-44109 Rev. *B

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Contents Features Logic Block DiagramOverview Sram ArrayPinouts Pin Definitions Pin Name Type DescriptionHold Device Operation Sram WriteSram Read Store OperationSerial Peripheral Interface Commonly used terms used in SPI protocol are given below SPI MasterSystem Configuration Using SPI nvSRAM SPI ModesSPI Operating Features SPI Functional DescriptionStatus Register Read Status Register Rdsr InstructionWrite Status Register Wrsr Instruction Write Enable Wren Instruction Write Disable Wrdi InstructionWrite Protection and Block Protection Block ProtectionMemory Access Read Sequence ReadWrite Sequence Write Wpen WENBurst Mode Read Instruction Timing Read RTC Rdrtc InstructionAutoStore Disable NvSRAM Special InstructionsWrite RTC Wrtc Instruction Software Store StoreAutoStore Disable Asdisb AutoStore Enable AsenbSoftware Recall Recall Hold Pin OperationReal Time Clock Operation Alarm Watchdog TimerCalibrating the Clock Power Monitor Interrupt RegisterInterrupts Flags RegisterAccessing the Real Time Clock through SPI RTC Recommended Component ConfigurationRTC Register Map1 BCD Format Data Function/Range WDF OscfOscen Alarm Day Alarm HoursAlarm Minutes Register Map DetailRegister Map Detail Alarm Seconds Time Keeping CenturiesFlags 0x00 WDF Oscf CALDC Electrical Characteristics Maximum RatingsOperating Range Parameter Description Test Conditions Min Max UnitData Retention and Endurance CapacitanceThermal Resistance AC Test ConditionsAC Switching Characteristics ~ ~ ~ ~ AutoStore or Power Up Recall Switching WaveformsParameters Description CY14B101P Unit Min Max CY14B101P To Output Active Time when write latch not set Hardware Store CycleParameter Description Hardware Store Pulse WidthOrdering Code Package Diagram Package Type Operating Range Ordering InformationPart Numbering Nomenclature CY 14 B 101 P SF X C TPackage Diagrams Pin 300 mil Soic PackageDocument History REV ECN noSubmission Orig. Description of Change Date Sales, Solutions, and Legal Information Worldwide Sales and Design Support Products PSoC SolutionsUSB