24AA04 Datasheet, PDF (3/12 Pages) Microchip Technology – 4K/8K 1.8V I2C Serial EEPROMs

24AA04/08
TABLE 1-3: AC CHARACTERISTICS
Parameter
Standard Mode
Symbol
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
TSU:STA 4700 —
600
— ns Only relevant for repeated
time
START condition
Data input hold time
THD:DAT
0
—
0
— ns
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 (Note 2)
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
min to VIL max
—
250 20 + 0.1 250 ns (Note 1), CB ≤ 100 pF
CB
Input filter spike suppres- TSP
—
50
—
50 ns (Note 3)
sion (SDA and SCL pins)
Write cycle time
TWR
—
10
—
10 ms Byte or Page mode
Endurance 24AA04
24AA08
—
10M —
10M
— cycles 25°C, Vcc = 5.0V, Block Mode
1M
1M
(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 (min-
imum 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 and 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
TR
TSU:DAT
TSU:STO
SCL
OUT
TAA
THD:STA
TAA
TBUF
© 1996 Microchip Technology Inc.
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