CY14C256Q Datasheet, PDF (23/33 Pages) Cypress Semiconductor – 256-Kbit (32 K x 8) SPI nvSRAM Infinite read, write, and RECALL cycles

CY14C256Q
CY14B256Q
CY14E256Q
For 2.5 V (CY14C256Q):
2.5 V
OUTPUT
30 pF
Figure 28. AC Test Loads and Waveforms
909 
R1
R2
1290 
2.5 V
OUTPUT
5 pF
909  ^{For Tri-state specs}
R1
R2
1290 
For 3 V (CY14B256Q):
3.0 V
OUTPUT
30 pF
577 
R1
R2
789 
3.0 V
OUTPUT
5 pF
577 
R1
For Tri-state specs
R2
789 
For 5 V (CY14E256Q):
5.0 V
OUTPUT
30 pF
963 
R1
R2
512 
5.0 V
OUTPUT
5 pF
963 
R1
For Tri-state specs
R2
512 
AC Test Conditions
Input pulse levels
Input rise and fall times (10% - 90%)
Input and output timing reference levels
CY14C256Q
0 V to 2.5 V
< 3 ns
1.25 V
CY14B256Q
0 V to 3 V
< 3 ns
1.5 V
CY14E256Q
0 V to 3 V
< 3 ns
1.5 V
Document #: 001-65282 Rev. *B
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