Cypress CY14B256L specifications Summary, AN20639, Ms max, No minimum, 7V min

AN20639

Table 1. Comparison Table (continued)

Specification	CY14B256L (35 nsec)		STK14C88-3 (35 nsec)
Auto Store/Power Up Recall
tHRECALL [2]		20 ms max		550 µs max
tSTORE [3]		12.5 ms max		10 ms max
VSWITCH [4]	No minimum	2.65V max	2.7V min	2.95V max

Notes

2.The power up recall specification is the most dramatic difference between the two devices. To accommodate the much slower specification of the CY14B256L device, system timing modifications may be required.

3.Store timing differences are not an issue because it occurs as a background operation when the system is powering down.

4.Even though there are small differences here they are unlikely to cause system level problems.

Summary

In most applications you can directly substitute the CY14B256L for the STK14C88-3 nvSRAM.

November 11, 2008 Document No. 001-20639 Rev. *C 2

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