Cypress CY14B101L manual AC Switching Characteristics, Switching Waveforms, Min Max, Parameter

Page 9

CY14B101L

AC Switching Characteristics

SRAM Read Cycle

Parameter

Description

25 ns

35 ns

45 ns

Unit

Cypress

Alt

Min

Max

Min

Max

Min

Max

Parameter

 

 

 

 

 

 

 

 

 

 

 

tACE

tELQV

Chip Enable Access Time

 

25

 

35

 

45

ns

tRC [7]

tAVAV, tELEH

Read Cycle Time

25

 

35

 

45

 

ns

tAA [8]

tAVQV

Address Access Time

 

25

 

35

 

45

ns

tDOE

tGLQV

Output Enable to Data Valid

 

12

 

15

 

20

ns

tOHA [8]

tAXQX

Output Hold After Address Change

3

 

3

 

3

 

ns

tLZCE [9]

tELQX

Chip Enable to Output Active

3

 

3

 

3

 

ns

tHZCE [9]

tEHQZ

Chip Disable to Output Inactive

 

10

 

13

 

15

ns

tLZOE [9]

tGLQX

Output Enable to Output Active

0

 

0

 

0

 

ns

tHZOE [9]

tGHQZ

Output Disable to Output Inactive

 

10

 

13

 

15

ns

tPU [6]

tELICCH

Chip Enable to Power Active

0

 

0

 

0

 

ns

tPD [6]

tEHICCL

Chip Disable to Power Standby

 

25

 

35

 

45

ns

Switching Waveforms

Figure 5. SRAM Read Cycle 1: Address Controlled [7, 8, 10]

$''5(66

W5&

W$$

W2+$

'4 '$7$287

'$7$9$/,'

Figure 6. SRAM Read Cycle 2: CE and OE Controlled [7, 10]

$''5(66

&(

2(

'4 '$7$287

,&&

W5&

W$&(

W/=&(

W'2(

W/=2(

W38 $&7,9(

67$1'%<

W3'

W+=&(

W+=2(

'$7$9$/,'

Notes

7.WE and HSB must be HIGH during SRAM READ cycles.

8.Device is continuously selected with CE and OE both Low.

9.Measured ±200 mV from steady state output voltage.

10.HSB must remain high during READ and WRITE cycles.

Document Number: 001-06400 Rev. *I

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Contents Logic Block Diagram FeaturesFunctional Description Cypress Semiconductor CorporationPin Definitions PinoutsSram Read Device OperationSram Write AutoStore OperationLow Average Active Power Hardware Recall Power UpSoftware Store Software RecallBest Practices Preventing StoreHardware Mode Selection A15 A0 Power Range Ambient Temperature DC Electrical CharacteristicsMaximum Ratings Operating RangeCapacitance Data Retention and EnduranceThermal Resistance AC Test ConditionsSwitching Waveforms AC Switching CharacteristicsMin Max ParameterData Setup to End of Write Chip Enable To End of WriteAddress Setup to End of Write Address Setup to Start of WriteParameter Alt Description CY14B101L Unit Min Max AutoStore or Power Up RecallParameter Alt Description 25 ns 35 ns 45 ns Unit Min Max Software Controlled STORE/RECALL CycleHardware Store Cycle Parameter Alt Description CY14B101L Unit MinHardware Store Pulse Width Ordering Information Part Numbering Nomenclature CY 14 B 101 L SZ 25 X C TPackage Diagrams Speed Ordering CodePackage Type Operating Range Pin Shrunk Small Outline Package Document Title CY14B101L 1 Mbit 128K x 8 nvSRAM Document HistoryUSB Sales, Solutions, and Legal Information