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CAT25CXXX Datasheet(PDF) 4 Page - Catalyst Semiconductor

Part No. CAT25CXXX
Description  Supervisory Circuits with SPI Serial E2PROM, Precision Reset Controller and Watchdog Timer
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Maker  CATALYST [Catalyst Semiconductor]
Homepage  http://www.catalyst-semiconductor.com
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 4 page
background image
9-98
CAT25CXXX
Stock No. 21085-01 4/98
Advanced
Limits
1.8, 2.5
4.5V-5.5V
Test
SYMBOL PARAMETER
Min.
Max.
Min.
Max.
UNITS
Conditions
tSU
Data Setup Time
50
10
ns
VIH = 2.4V
tH
Data Hold Time
50
20
ns
CL = 100pF
tWH
SCK High Time
200
40
ns
VOL = 0.8V
tWL
SCK Low Time
200
40
ns
VOH = 2.0v
fSCK
Clock Frequency
DC
2
DC
10
MHz
tLZ
HOLD to Output Low Z
50
50
ns
tRI(1)
Input Rise Time
2
2
µs
tFI(1)
Input Fall Time
2
2
µs
tHD
HOLD Setup Time
100
40
ns
tCD
HOLD HOLD Time
100
40
ns
CL = 100pF
tWC
Write Cycle Time
10
5
ms
tV
Output Valid from Clock Low
200
80
ns
tHO
Output HOLD Time
0
0
ns
tDIS
Output Disable Time
250
75
ns
tHZ
HOLD to Output High Z
100
50
ns
tCS
CS High Time
250
100
ns
tCSS
CS Setup Time
250
100
ns
tCSH
CS HOLD Time
250
100
ns
NOTE:
(1) This parameter is tested initially and after a design or process change that affects the parameter.
A.C. CHARACTERISTICS
CL = 50pF
Figure 1. Sychronous Data Timing
VALID IN
VIH
VIL
tCSS
VIH
VIL
VIH
VIL
VOH
VOL
HI-Z
tSU
tH
tWH
tWL
tV
tCS
tCSH
tHO
tDIS
HI-Z
CS
SCK
SI
SO




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