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FM24C256FLZEYYX データシート(PDF) 5 Page - Fairchild Semiconductor

部品番号 FM24C256FLZEYYX
部品情報  256 KBit 2-Wire Bus Interface Serial EEPROM with Write Protect
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メーカー  FAIRCHILD [Fairchild Semiconductor]
ホームページ  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FM24C256FLZEYYX データシート(HTML) 5 Page - Fairchild Semiconductor

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FM24C256 rev. B.3
AC Conditions of Test
Input Pulse Levels
V
CC x 0.1 to VCC x 0.9
Input Rise and Fall Times
10 ns
Input & Output Timing Levels
VCC x 0.5
Output Load
1 TTL Gate and C
L = 100 pF
Read and Write Cycle Limits (Standard and Low V
CC Range - 2.7V-5.5V)
Symbol
Parameter
100 kHz
400 kHz
Units
Min
Max
Min
Max
fSCL
SCL Clock Frequency
100
400
kHz
T
I
Noise Suppression Time Constant at
SCL, SDA Inputs (Minimum VIN
100
50
ns
Pulse width)
tAA
SCL Low to SDA Data Out Valid
0.3
3.5
0.3
1.2
µs
t
BUF
Time the Bus Must Be Free before
4.7
1.3
µs
a New Transmission Can Start
t
HD:STA
Start Condition Hold Time
4.0
0.6
µs
t
LOW
Clock Low Period
4.7
1.5
µs
tHIGH
Clock High Period
4.0
0.6
µs
t
SU:STA
Start Condition Setup Time
4.7
0.6
µs
(for a Repeated Start Condition)
t
HD:DAT
Data in Hold Time
0
0
µs
t
SU:DAT
Data in Setup Time
250
100
ns
tR
SDA and SCL Rise Time
1
0.3
µs
t
F
SDA and SCL Fall Time
300
300
ns
t
SU:STO
Stop Condition Setup Time
4.7
0.6
µs
tDH
Data Out Hold Time
100
100
ns
t
WR
Write Cycle Time
6
6
ms
(Note 2)
Note 2: The write cycle time (t
WR) is the time from a valid stop condition of a write sequence to the end of the internal erase/program cycle. During the write cycle, the
FM24C256 bus interface circuits are disabled, SDA is allowed to remain high per the bus-level pull-up resistor, and the device does not respond to its slave address


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