X84256 Datasheet, PDF (9/15 Pages) Xicor Inc. – UPort Saver EEPROM

X84256
Preliminary
Write Cycle Limits – X84256
Symbol
Parameter
t_NVWC⁽⁵⁾
t_WC
t_WP
t_WPH
t_CS
t_CH
t_CP
t_CPH
t_OES
t_OEH
t_DS⁽⁶⁾
t_DH⁽⁶⁾
t_WPSU⁽⁷⁾
t_WPHD⁽⁷⁾
Nonvolatile Write Cycle Time
Write Cycle Time
WE Pulse Width
WE HIGH Recovery Time
Write Setup Time
Write Hold Time
CE Pulse Width
CE HIGH Recovery Time
OE HIGH Setup Time
OE HIGH Hold Time
Data Setup Time
Data Hold Time
WP HIGH Setup
WP HIGH Hold
V_CC = 5V ±10%
Min. Max.
5
100
25
65
0
0
25
65
25
25
12
5
100
100
V_CC = 2.5V – 5.5V V_CC = 1.8V – 3.6V
Min. Max. Min. Max.
5
5
200
330
40
70
150
200
0
0
0
0
40
70
150
200
25
50
25
50
20
30
5
5
100
150
100
150
Units
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes: (5) t_NVWC is the time from the falling edge of OE or CE (whichever occurs last) of the second read cycle in the “start nonvolatile write cycle”
sequence until the self-timed, internal nonvolatile write cycle is completed.
(6) Data is latched into the X84256 on the rising edge of CE or WE, whichever occurs first.
(7) Periodically sampled, but not 100% tested.
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