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24LCS52 Datasheet(PDF) 3 Page - Microchip Technology

Part No. 24LCS52
Description  2K 2.5V I 2 C Serial EEPROM with Software Write Protect
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Maker  MICROCHIP [Microchip Technology]
Homepage  http://www.microchip.com
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© 1996 Microchip Technology Inc.
Preliminary
DS21166B-page 3
24LCS52
TABLE 1-3:
AC CHARACTERISTICS
FIGURE 1-2:
BUS TIMING DATA
Parameter
Symbol
Vcc = 2.5-5.5V
STD 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
(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
minimum to VIL maximum
TOF
250
20 +0.1
CB
250
ns
(Note 1), CB
≤ 100 pF
Input filter spike suppression
(SDA and SCL pins)
TSP
50—50
ns
(Note 3)
Write cycle time
TWR
10
10
ms
Byte or Page mode
Endurance
10M
10M
cycles
25
°C, VCC = 5.0V, 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.
SCL
SDA
SDA
TSU:STA
TF
TLOW
THIGH
TR
THD:DAT
TSU:DAT
TSU:STO
THD:STA
TBUF
TAA
TAA
TSP
THD:STA
IN
OUT




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