X24128
A.C. OPERATING CHARACTERISTICS (Over the recommended operating conditions, unless otherwise specified.)
Read & Write Cycle Limits
Symbol
Parameter
Min.
0
Max.
Unit
kHz
ns
µs
µs
µs
µs
µs
µs
µs
ns
ns
ns
µs
ns
µs
f
SCL clock frequency
400
SCL
t
Noise suppression time constant at SCL, SDA inputs
SCL LOW to SDA Data out valid
Time the bus must be free before a new transmission can start
Start condition hold time
50
I
t
0.1
1.2
0.6
1.2
0.6
0.6
0
0.9
AA
t
BUF
t
t
HD:STA
t
Clock LOW period
LOW
t
Clock HIGH period
HIGH
Start condition setup time (for a repeated start condition)
Data In hold time
SU:STA
HD:DAT
t
t
Data In setup time
100
SU:DAT
t
SDA and SCL rise time
300
300
R
t
SDA and SCL fall time
F
t
Stop Condition setup time
0.6
50
SU:STO
t
Data out hold time
300
250
DH
(4)
b
t
Output fall time
20+0.1C
OF
Note: (4) Cb = Total capacitance of one bus line in pF
POWER-UP TIMING(5)
Symbol
Parameter
Power-up to read operation
Power-up to write operation
Max.
Unit
ms
t
1
5
PUR
t
ms
PUW
Notes: (5) t
and t
are the delays required from the time V is stable until the specified operation can be initiated.These parameters
CC
PUR
PUW
are periodically sampled and not 100% tested.
(6) Typical values are for T = 25°C and nominal supply voltage (5V).
A
A.C. CONDITIONS OF TEST
EQUIVALENT A.C. LOAD CIRCUIT
Input pulse levels
V
x 0.1 to V x 0.9
CC
CC
5V
Input rise and fall times
Input and output timing levels
10ns
V
X 0.5
1.53KΩ
CC
Output
100pF
Characteristics subject to change without notice. 11 of 16
REV 1.1 9/8/00
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