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24AA65/24LC65/24C65
TABLE 1-2:
AC CHARACTERISTICS
V CC = 1.8V-6.0V
V CC = 4.5-6.0V
Parameter
Symbol
STD. Mode
Min
Max
FAST Mode
Min
Max
Units
Remarks
Clock frequency
Clock high time
Clock low time
F CLK
T HIGH
T LOW
—
4000
4700
100
—
—
—
600
1300
400
—
—
kHz
ns
ns
SDA and SCL rise time
SDA and SCL fall time
Start condition setup time
T R
T F
T HD : STA
—
—
4000
1000
300
—
—
—
600
300
300
—
ns
ns
ns
(Note 1)
(Note 1)
After this period the first
clock pulse is generated
Start condition setup time
T SU : STA
4700
—
600
—
ns
Only relevant for
repeated Start condition
Data input hold time
Data input setup time
Stop condition setup time
T HD : DAT
T SU : DAT
T SU : STO
0
250
4000
—
—
—
0
100
600
—
—
—
ns
ns
ns
Output valid from clock
Bus free time
T AA
T BUF
—
4700
3500
—
—
1300
900
—
ns
ns
(Note 2)
Time the bus must be
free before a new
transmission can start
Output fall time from V IH min to T OF
V IL max
— 250 20 + 0.1
C B
250 ns
(Note 1) , C B ≤ 100 pF
Input filter spike suppression
T SP
50 — 50 — ns
(Note 3)
(SDA and SCL pins)
Write cycle time T WR
Endurance
— 5 — 5 ms/page (Note 4)
High Endurance Block
Rest of Array
10M
1M
—
—
10M
1M
—
—
cycles 25°C, (Note 5)
Note 1:
2:
3:
4:
5:
Not 100 percent tested. C B = total capacitance of one bus line in pF.
As a transmitter, the device must provide an internal minimum delay time to bridge the undefined region
(minimum 300 ns) of the falling edge of SCL to avoid unintended generation of Start or Stop conditions.
The combined T SP and V HYS specifications are due to new Schmitt Trigger inputs which provide improved
noise and spike suppression. This eliminates the need for a Ti specification for standard operation.
The times shown are for a single page of 8 bytes. Multiply by the number of pages loaded into the write
cache for total time.
This parameter is not tested but ensured by characterization. For endurance estimates in a specific
application, please consult the Total Endurance? Model which can be downloaded at www.microchip.com.
FIGURE 1-2:
BUS TIMING DATA
SCL
T F
T LOW
T HIGH
T R
SDA
IN
T SU : STA
T SP
T HD : STA
T HD : DAT
T SU : DAT
T SU : STO
T BUF
SDA
OUT
DS21073K-page 4
T AA
T AA
? 2008 Microchip Technology Inc.
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