Cypress STK12C68 manual Data Retention and Endurance, Capacitance, Thermal Resistance

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STK12C68

Data Retention and Endurance

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Parameter

 

Description

 

 

Min

 

 

 

 

 

 

 

Unit

DATAR

 

Data Retention

 

 

 

 

100

 

 

 

 

 

 

Years

NVC

 

Nonvolatile STORE Operations

 

 

1,000

 

 

 

 

 

 

 

K

Capacitance

 

 

 

 

 

 

 

 

 

 

 

 

 

 

In the following table, the capacitance parameters are listed.[6]

 

 

 

 

 

 

 

 

 

 

 

Parameter

 

Description

 

 

 

Test Conditions

 

 

 

Max

 

 

Unit

CIN

Input Capacitance

 

TA = 25°C, f = 1 MHz,

 

 

 

 

 

8

 

 

 

pF

 

 

 

 

 

VCC = 0 to 3.0 V

 

 

 

 

 

 

 

 

 

 

 

COUT

Output Capacitance

 

 

 

 

 

 

7

 

 

 

pF

Thermal Resistance

 

 

 

 

 

 

 

 

 

 

 

 

 

 

In the following table, the thermal resistance parameters are listed.[6]

 

 

 

 

 

 

 

 

 

 

Parameter

 

 

Description

 

 

Test Conditions

28-SOIC

28-PDIP

28-PDIP

28-CDIP

 

28-LCC

 

Unit

 

 

 

 

(300 mil)

(600 mil)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ΘJA

 

Thermal Resis-

 

Test conditions follow

46.55

45.16

55.84

46.1

 

95.31

 

°C/W

 

 

tance

 

standard test methods and

 

 

 

 

 

 

 

 

 

 

 

 

 

(Junction to

 

procedures for measuring

 

 

 

 

 

 

 

 

 

 

 

 

 

Ambient)

 

thermal impedance, per EIA /

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

JESD51.

 

 

 

 

 

 

 

 

 

ΘJC

 

Thermal Resis-

 

27.95

31.62

25.74

5.01

 

9.01

 

 

°C/W

 

 

tance

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Junction to Case)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R1 963Ω

5.0V

Output

30 pF

Figure 6. AC Test Loads

R1 963Ω For Tri-state Specs

5.0V

Output

R2

5 pF

 

 

 

 

 

 

 

 

 

 

 

 

R2

 

 

 

 

512Ω

 

 

 

 

 

 

 

 

 

 

 

 

512Ω

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AC Test Conditions

Input Pulse Levels

0 V to 3 V

Input Rise and Fall Times (10% to 90%)

<5 ns

Input and Output Timing Reference Levels

1.5

Note

6. These parameters are guaranteed by design and are not tested.

Document Number: 001-51027 Rev. **

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Contents Features Functional DescriptionPin Configurations Pin DefinitionsDevice Operation Sram ReadSram Write AutoStore OperationAutoStore Inhibit Mode Hardware Recall Power UpHardware Store HSB Operation Software StoreLow Average Active Power Data ProtectionNoise Considerations Hardware ProtectBest Practices Hardware Mode SelectionA12-A0 Mode Power DC Electrical Characteristics Range Ambient TemperatureMaximum Ratings Operating RangeData Retention and Endurance CapacitanceThermal Resistance AC Test ConditionsParameter AC Switching CharacteristicsSwitching Waveforms Sram Write Cycle AutoStore or Power Up Recall Switching WaveformParameter Alt Description STK12C68 Unit Min Max HSBSoftware Controlled STORE/RECALL Cycle Parameter Alt Description 25 ns 35 ns 45 ns Unit MinHardware Store Cycle Hardware Store CyclePart Numbering nomenclature STK12C68 S F 45 I TR Ordering InformationSTK12C68-SF25TR STK12C68-SF25ITRSpeed ns Ordering Code Package Type Operating RangeSTK12C68-SF45TR STK12C68-SF45ITRPin 330 Mil Soic Pin 300 Mil PdipPin 600 Mil Pdip Pin 300 Mil Side Braze DIL Pad 350 Mil LCC Sales, Solutions, and Legal Information New data sheetDocument History USB