CAT24C256
Table 9. A.C. CHARACTERISTICS ? New Product (Rev E) (Notes 14, 15)
(V CC = 1.8 V to 5.5 V, T A = ? 40 ° C to +85 ° C and V CC = 2.5 V to 5.5 V, T A = ? 4 0 ° C to +125 ° C, unless otherwise specified.)
Standard
V CC = 1.8 V ? 5.5 V
Fast
V CC = 1.8 V ? 5.5 V
Fast ? Plus
V CC = 2.5 V ? 5.5 V
T A = ? 40 5 C to +85 5 C
Symbol
Parameter
Min
Max
Min
Max
Min
Max
Units
F SCL
t HD:STA
t LOW
t HIGH
t SU:STA
t HD:DAT
t SU:DAT
t R (Note 16)
t F (Note 16)
t SU:STO
t BUF
t AA
t DH
T i (Note 16)
t SU:WP
t HD:WP
t WR
Clock Frequency
START Condition Hold Time
Low Period of SCL Clock
High Period of SCL Clock
START Condition Setup Time
Data In Hold Time
Data In Setup Time
SDA and SCL Rise Time
SDA and SCL Fall Time
STOP Condition Setup Time
Bus Free Time Between
STOP and START
SCL Low to Data Out Valid
Data Out Hold Time
Noise Pulse Filtered at SCL
and SDA Inputs
WP Setup Time
WP Hold Time
Write Cycle Time
4
4.7
4
4.7
0
250
4
4.7
50
0
2.5
100
1,000
300
3.5
50
5
0.6
1.3
0.6
0.6
0
100
0.6
1.3
50
0
2.5
400
300
300
0.9
50
5
0.25
0.45
0.40
0.25
0
50
0.25
0.5
50
0
1
1,000
100
100
0.40
50
5
kHz
m s
m s
m s
m s
m s
ns
ns
ns
m s
m s
m s
ns
ns
m s
m s
ms
t PU
(Notes 16, 17)
Power-up to Ready Mode
1
1
0.1
1
ms
14. Test conditions according to “A.C. Test Conditions” table.
15. The New product Rev E is identified by letter “E” or a dedicated marking code on top of the package.
16. Tested initially and after a design or process change that affects this parameter.
17. t PU is the delay between the time V CC is stable and the device is ready to accept commands.
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