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R1EX24256ASAS0I Datasheet(PDF) 5 Page - Renesas Technology Corp

Part # R1EX24256ASAS0I
Description  Two-wire serial interface 256k EEPROM (32-kword 횞 8-bit)
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

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R1EX24256xxS0I
AC Characteristics (Ta = −40 to +85°C, V
CC = 1.8 to 5.5 V)
Test Conditions
• Input pules levels:
 V
IL = 0.2 × VCC
 V
IH = 0.8 × VCC
• Input rise and fall time: ≤ 20 ns
• Input and output timing reference levels: 0.5 × V
CC
• Output load: TTL Gate + 100 pF
Parameter
Symbol
Min
Typ
Max
Unit
Notes
Clock frequency
f
SCL
400
kHz
Clock pulse width low
t
LOW
1200
ns
Clock pulse width high
t
HIGH
600
ns
Noise suppression time
t
I
50
ns
1
Access time
t
AA
100
900
ns
Bus free time for next mode
t
BUF
1200
ns
Start hold time
t
HD.STA
600
ns
Start setup time
t
SU.STA
600
ns
Data in hold time
t
HD.DAT
0
ns
Data in setup time
t
SU.DAT
100
ns
Input rise time
t
R
300
ns
1
Input fall time
t
F
300
ns
1
Stop setup time
t
SU.STO
600
ns
Data out hold time
t
DH
50
ns
Write protect hold time
t
HD.WP
1200
ns
Write protect setup time
t
SU.WP
0
ns
Write cycle time
t
WC
5
ms
2
Erase/Write Endurance
10
6
cycles
3
Notes: 1. This parameter is sampled and not 100
% tested.
2. t
WC is the time from a stop condition to the end of internally controlled write cycle.
3. This parameter is sampled and not 100% tested.
10
6 Cycles (Ta = 25°C)
10
5 Cycles (Ta = 85°C)
REJ03C0327-0001 Rev.0.01 Jan. 10, 2008
Page 5 of 22


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