24AA01 Datasheet, PDF (3/12 Pages) Microchip Technology – 1K/2K 1.8V I 2 C O Serial EEPROMs

24AA01/02
TABLE 1-3: AC CHARACTERISTICS
Parameter
Symbol
Standard Mode
VCC = 4.5 - 5.5V
Fast Mode
Units
Remarks
Min Max Min Max
Clock frequency
Fclk
—
100
—
400 kHz
Clock high time
Thigh 4000
—
600
—
ns
Clock low time
Tlow
4700
—
1300
—
ns
SDA and SCL rise time
Tr
—
1000
—
300
ns (Note 1)
SDA and SCL fall time
Tf
—
300
—
300
ns (Note 1)
START condition hold time Thd:sta 4000
—
600
—
ns After this period the first
clock pulse is generated
START condition setup time Tsu:sta 4700
—
600
—
ns Only relevant for repeated
START condition
Data input hold time
Thd:dat
0
—
0
—
ns (Note 2)
Data input setup time
Tsu:dat 250
—
100
—
ns
STOP condition setup time Tsu:sto 4000
—
600
—
ns
Output valid from clock
Taa
—
3500
—
900
ns (Note2)
Bus free time
Tbuf
4700
—
1300
—
ns Time the bus must be free
before a new transmission
can start
Output fall time from VIH
Tof
—
250 20 +0.1 250
ns (Note 1), CB ≤ 100 pF
min to VIL max
CB
Input filter spike suppres-
TSP
sion (SDA and SCL pins)
—
50
—
50
ns (Note 3)
Write cycle time
Twr
—
10
—
10
ms Byte or Page mode
Endurance 24AA01
24AA02
—
10M
1M
—
10M
1M
—
cycles
25°C, Vcc = 5.5V, Block
Mode (Note 4)
Note 1: Not 100% tested. CB = total capacitance of one bus line in pF.
2: 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.
3: The combined TSP and VHYS specifications are due to new Schmitt trigger inputs which provide improved
noise spike suppression. This eliminates the need for a TI specification for standard operation.
4: This parameter is not tested but guaranteed by characterization. For endurance estimates in a specific appli-
cation, please consult the Total Endurance Model which can be obtained on our BBS or website.
FIGURE 1-2: BUS TIMING DATA
SCL
TSU:STA
SCL
IN
TSP
TF
TLOW
THD:STA
THIGH
THD:DAT
TAA
THD:STA
TAA
SDA
OUT
TR
TSU:DAT
TSU:STO
TBUF
© 1996 Microchip Technology Inc.
DS21052F-page 3