24AA256 Datasheet, PDF (3/12 Pages) Microchip Technology – 256K I 2 C CMOS Serial EEPROM

24AA256/24LC256
TABLE 1-3 AC CHARACTERISTICS
All parameters apply across the spec- Industrial (I): VCC = +1.8V to 5.5V
ified operating ranges unless other- _{Automotive (E): VCC = +4.5V to 5.5V}
wise noted.
Tamb = -40°C to +85°C
Tamb = -40°C to 125°C
Parameter
Symbol
Min
Max Units
Conditions
Clock frequency
Clock high time
Clock low time
SDA and SCL rise time
(Note 1)
SDA and SCL fall time
START condition hold time
START condition setup time
Data input hold time
Data input setup time
STOP condition setup time
WP setup time
WP hold time
Output valid from clock
(Note 2)
Bus free time: Time the bus must be
free before a new transmission can
start
Output fall time from VIH
minimum to VIL maximum
Input filter spike suppression
(SDA and SCL pins)
Write cycle time (byte or page)
Endurance
FCLK
THIGH
TLOW
TR
TF
THD:STA
TSU:STA
THD:DAT
TSU:DAT
TSU:STO
TSU:WP
THD:WP
TAA
TBUF
TOF
TSP
TWC
—
—
—
4000
4000
600
4700
4700
1300
—
—
—
—
4000
4000
600
4700
4700
600
0
250
250
100
4000
4000
600
4000
4000
600
4700
4700
1300
—
—
—
4700
4700
1300
10
—
100 kHz 4.5V ≤ VCC ≤ 5.5V (E Temp range)
100
1.8V ≤ VCC ≤ 2.5V
400
2.5V ≤ VCC ≤ 5.5V
—
ns 4.5V ≤ VCC ≤ 5.5V (E Temp range)
—
1.8V ≤ VCC ≤ 2.5V
—
2.5V ≤ VCC ≤ 5.5V
—
ns 4.5V ≤ VCC ≤ 5.5V (E Temp range)
—
1.8V ≤ VCC ≤ 2.5V
—
2.5V ≤ VCC ≤ 5.5V
1000 ns 4.5V ≤ VCC ≤ 5.5V (E Temp range)
1000
1.8V ≤ VCC ≤ 2.5V
300
2.5V ≤ VCC ≤ 5.5V
300 ns (Note 1)
—
ns 4.5V ≤ VCC ≤ 5.5V (E Temp range)
—
1.8V ≤ VCC ≤ 2.5V
—
2.5V ≤ VCC ≤ 5.5V
—
ns 4.5V ≤ VCC ≤ 5.5V (E Temp range)
—
1.8V ≤ VCC ≤ 2.5V
—
2.5V ≤ VCC ≤ 5.5V
—
ns (Note 2)
—
ns 4.5V ≤ VCC ≤ 5.5V (E Temp range)
—
1.8V ≤ VCC ≤ 2.5V
—
2.5V ≤ VCC ≤ 5.5V
—
ns 4.5V ≤ VCC ≤ 5.5V (E Temp range)
—
1.8V ≤ VCC ≤ 2.5V
—
2.5V ≤ VCC ≤ 5.5V
—
ns 4.5V ≤ VCC ≤ 5.5V (E Temp range)
—
1.8V ≤ VCC ≤ 2.5V
—
2.5V ≤ VCC ≤ 5.5V
—
ns 4.5V ≤ VCC ≤ 5.5V (E Temp range)
—
1.8V ≤ VCC ≤ 2.5V
—
2.5V ≤ VCC ≤ 5.5V
3500 ns 4.5V ≤ VCC ≤ 5.5V (E Temp range)
3500
1.8V ≤ VCC ≤ 2.5V
900
2.5V ≤ VCC ≤ 5.5V
—
ns 4.5V ≤ VCC ≤ 5.5V (E Temp range)
—
1.8V ≤ VCC ≤ 2.5V
—
2.5V ≤ VCC ≤ 5.5V
250
ns C_B ≤ 100 pF (Note 1)
50
ns (Notes 1 and 3)
—
100,000
5
ms
— cycles 25°C, VCC = 5.0V, Block Mode (Note 4)
Note 1:
2:
3:
4:
Not 100% 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 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.
This parameter is not tested but guaranteed by characterization. For endurance estimates in a specific application, please
consult the Total Endurance Model which can be obtained on Microchip’s BBS or website.
© 1998 Microchip Technology Inc.
DS21203C-page 3