X25643 Datasheet, PDF (9/16 Pages) Xicor Inc. – Programmable Watchdog Timer & V CC Supervisory Circuit w/Serial E 2 PROM

X25643/45
X25323/25
X25163/65
EQUIVALENT A.C. LOAD CIRCUIT AT 5V V_CC
5V
5V
1.64KΩ
3.3KΩ
OUTPUT
1.64KΩ
RESET/RESET
100pF
30pF
A.C. TEST CONDITIONS
Input Pulse Levels
V_CC x 0.1 to V_CC x 0.9
Input Rise and Fall Times
10ns
Input and Output Timing Level
V_CC x0.5
7036 FRM T12
A.C. CHARACTERISTICS (Over recommended operating conditions, unless otherwise specified)
Data Input Timing
Symbol
Parameter
f_SCK
Clock Frequency
t_CYC
Cycle Time
t_LEAD
CS Lead Time
t_LAG
CS Lag Time
t_WH
Clock HIGH Time
t_WL
Clock LOW Time
t_SU
Data Setup Time
t_H
Data Hold Time
t_RI⁽³⁾
Input Rise Time
t_FI⁽³⁾
Input Fall Time
t_CS
CS Deselect Time
t_WC⁽⁴⁾
Write Cycle Time
Voltage Range
2.7V–5.5V
1.8V–3.6V
2.7V–5.5V
1.8V–3.6V
2.7V–5.5V
1.8V–3.6V
2.7V–5.5V
1.8V–3.6V
2.7V–5.5V
1.8V–3.6V
2.7V–5.5V
1.8V–3.6V
2.7V–5.5V
1.8V–3.6V
2.7V–5.5V
1.8V–3.6V
2.7V–5.5V
1.8V–3.6V
2.7V–5.5V
1.8V–3.6V
2.7V–5.5V
1.8V–3.6V
2.7V–5.5V
1.8V–3.6V
Min.
0
500
1000
250
500
250
500
200
400
200
400
50
50
500
Max.
2
1
100
100
10
Units
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
7036 FRM T13
9