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STK12C68 Datasheet(PDF) 10 Page - Cypress Semiconductor

Part No. STK12C68
Description  64 Kbit (8K x 8) AutoStore nvSRAM 25 ns, 35 ns, and 45 ns access times
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Maker  CYPRESS [Cypress Semiconductor]
Homepage  http://www.cypress.com
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STK12C68 Datasheet(HTML) 10 Page - Cypress Semiconductor

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STK12C68
Document Number: 001-51027 Rev. *C
Page 10 of 24
AC Switching Characteristics
SRAM Read Cycle
Parameter
Description
25 ns
35 ns
45 ns
Unit
Min
Max
Min
Max
Min
Max
Cypress
Parameter
Alt
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
10
15
20
ns
tOHA [8]
tAXQX
Output Hold After Address Change
5
5
5
ns
tLZCE [9]
tELQX
Chip Enable to Output Active
5
5
5
ns
tHZCE [9]
tEHQZ
Chip Disable to Output Inactive
10
10
12
ns
tLZOE [9]
tGLQX
Output Enable to Output Active
0
0
0
ns
tHZOE [9]
tGHQZ
Output Disable to Output Inactive
10
10
12
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 7. SRAM Read Cycle 1: Address Controlled [7, 8]
Figure 8. SRAM Read Cycle 2: CE and OE Controlled [7]
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