Cypress STK15C88 manual Software Controlled STORE/RECALL Cycle

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STK15C88

Software Controlled STORE/RECALL Cycle

 

 

 

 

 

 

 

The software controlled STORE/RECALL cycle follows. [11, 12]

 

 

 

 

 

 

 

 

Parameter

 

Alt

 

Description

 

25 ns

 

45 ns

Unit

 

 

 

Min

 

Max

Min

 

Max

 

 

 

 

 

 

 

 

 

tRC

tAVAV

 

STORE/RECALL Initiation Cycle Time

25

 

 

45

 

 

ns

t

[11]

t

AVEL

 

Address Setup Time

0

 

 

0

 

 

ns

 

SA

 

 

 

 

 

 

 

 

 

 

tCW[11]

tELEH

 

Clock Pulse Width

20

 

 

30

 

 

ns

tHACE[7, 11]

tELAX

 

Address Hold Time

20

 

 

20

 

 

ns

tRECALL

 

 

 

RECALL Duration

 

 

20

 

 

20

μs

Switching Waveforms

Figure 10. CE Controlled Software STORE/RECALL Cycle [12]

ADDRESS

CE

OE

DQ (DATA)

tRC

ADDRESS # 1

tSA

 

 

 

tSCE

 

 

tHACE

DATA VALID

tRC

ADDRESS # 6

tSTORE / tRECALL

HIGH IMPEDANCE

DATA VALID

Notes

11.The software sequence is clocked on the falling edge of CE without involving OE (double clocking will abort the sequence).

12.The six consecutive addresses must be read in the order listed in the Mode Selection table. WE must be HIGH during all six consecutive cycles.

Document Number: 001-50593 Rev. **

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Contents Cypress Semiconductor Corporation 198 Champion Court FeaturesLogic Block Diagram Functional DescriptionPower Supply Inputs to the Device Pin ConfigurationsWrite Enable Input, Active LOW. When the chip is enabled Output Enable, Active LOW. The active LOWSram Write Hardware Recall Power UpDevice Operation Sram ReadBest Practices Low Average Active PowerHardware Protect Noise ConsiderationsRead Sram Output Data 0x303F Software STORE/RECALL Mode Selection 13 a0x0E38 Read Sram Output Data Read Sram Output Data 0x03E0Operating Range DC Electrical CharacteristicsRange Ambient Temperature Maximum RatingsThermal Resistance Data Retention and EnduranceCapacitance AC Test ConditionsParameter Description 25 ns 45 ns Unit Cypress Alt Min Max AC Switching CharacteristicsSwitching Waveforms Sram Read CycleMin Max Parameter SwitchingParameter Alt Description STK15C88 Unit Min Max AutoStore or Power Up RecallParameter Alt Description 25 ns 45 ns Unit Min Max Software Controlled STORE/RECALL CycleOrdering Information Part Numbering Nomenclature STK15C88 N F 45 I TRPin 300 mil Soic Package DiagramsPin 330 mil Soic Document History Sales, Solutions and Legal InformationWorldwide Sales and Design Support Products PSoC Solutions New data sheet