X25043 Datasheet, PDF (9/15 Pages) Xicor Inc. – Programmable Watchdog Supervisory E2PROM

X25043/45
EQUIVALENT A.C. LOAD CIRCUIT AT 5V VCC
5V
5V
4.6KΩ
OUTPUT
RESET/RESET
100pF
100pF
A.C. TEST CONDITIONS
Input Pulse Levels
Input Rise and Fall Times
V_CC x 0.1 to V_CC x 0.9
10ns
Input and Output Timing Level
V_CC x 0.5
3844 PGM T11
3844 FHD F12.2
A.C. CHARACTERISTICS (Over recommended operating conditions, unless otherwise specified)
Data Input Timing
Symbol
Parameter
Min.
Max.
f_SCK
t_CYC
t_LEAD
t_LAG
t_WH
t_WL
t_SU
t_H
t_RI(3)
t_FI(3)
t_CS
t_WC(4)
Clock Frequency
Cycle Time
CS Lead Time
CS Lag Time
Clock HIGH Time
Clock LOW Time
Data Setup Time
Data Hold Time
Input Rise Time
Input Fall Time
CS Deselect Time
Write Cycle Time
0
1
1000
500
500
500
400
100
100
2
2
500
10
Units
MHz
ns
ns
ns
ns
ns
ns
ns
µs
µs
ns
ms
3844 PGM T12.2
Data Output Timing
Symbol
Parameter
f_SCK
t_DIS
t_V
t_HO
t_RO(3)
t_FO(3)
Clock Frequency
Output Disable Time
Output Valid from Clock LOW
Output Hold Time
Output Rise Time
Output Fall Time
Min.
0
0
Max.
1
500
400
300
300
Units
MHz
ns
ns
ns
ns
ns
3844 PGM T13.1
Notes: (3) This parameter is periodically sampled and not 100% tested.
(4) t_WC is the time from the rising edge of CS after a valid write sequence has been sent to the end of the self-timed internal
nonvolatile write cycle.
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