256K (32K x 8) 5-volt Only Flash Memory AT29C256
256K (32K x 8) 5-volt Only Flash Memory AT29C256
256K (32K x 8) 5-volt Only Flash Memory AT29C256
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
AC Read Characteristics<br />
Symbol<br />
Parameter<br />
<strong>AT29C256</strong>-70 <strong>AT29C256</strong>-90 <strong>AT29C256</strong>-12 <strong>AT29C256</strong>-15<br />
Min Max Min Max Min Max Min Max<br />
t ACC Address to Output Delay 70 90 120 150 ns<br />
t CE<br />
(1)<br />
t OE<br />
(2)<br />
t DF<br />
(3)(4)<br />
t OH<br />
CE to Output Delay 70 90 120 150 ns<br />
OE to Output Delay 0 40 0 40 0 50 0 70 ns<br />
CE or OE to Output Float 0 25 0 25 0 30 0 40 ns<br />
Output Hold from OE,CEor Address, 0 0 0 0 ns<br />
whichever occurred first<br />
Units<br />
Note:<br />
Not recommended for New Designs.<br />
AC Read Waveforms (1)(2)(3)(4)<br />
Notes: 1. CE may be delayed up to t ACC -t CE after the address transition without impact on t ACC .<br />
2. OE may be delayed up to t CE -t OE after the falling edge of CE without impact on t CE or by t ACC -t OE after an address change<br />
without impact on t ACC .<br />
3. t DF is specified from OE or CE whichever occurs first (CL = 5 pF).<br />
4. This parameter is characterized and is not 100% tested.<br />
6 <strong>AT29C256</strong><br />
0046O–FLASH–06/02
Change language