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Teilenummer | R1EX24008ASAS0I |
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Beschreibung | Two-wire serial interface 8k EEPROM | |
Hersteller | Renesas Technology | |
Logo | ||
Gesamt 24 Seiten R1EX24008ASAS0I
R1EX24008ATAS0I
Two-wire serial interface
8k EEPROM (1024-word × 8-bit)
www.DataSheet4U.com
REJ03C0364-0001
Preliminary
Rev.0.01
Dec. 28, 2007
Description
R1EX24xxx series are two-wire serial interface EEPROM (Electrically Erasable and Programmable
ROM). They realize high speed, low power consumption and a high level of reliability by employing
advanced MNOS memory technology and CMOS process and low voltage circuitry technology. They also
have a 16-byte page programming function to make their write operation faster.
Features
• Single supply: 1.8 V to 5.5 V
• Two-wire serial interface (I2C serial bus)
• Clock frequency: 400 kHz
• Power dissipation:
Standby: 2 µA (max)
Active (Read): 1 mA (max)
Active (Write): 3.0 mA (max)
• Automatic page write: 16-byte/page
• Write cycle time: 5 ms
• Endurance: 106 Cycles
• Data retention: 10 Years
Preliminary: The specifications of this device are subject to change without notice. Please contact your
nearest Renesas Technology’s Sales Dept. regarding specifications.
REJ03C0364-0001 Rev.0.01 Dec. 28, 2007
Page 1 of 22
R1EX24008AxxS0I
Timing Waveforms
Bus Timing
SCL
www.DataSheet4U.com
SDA
(in)
SDA
(out)
WP
tF
tSU.STA
tHD.STA
tAA
tSU.WP
1/fSCL
tHIGH
tLOW
tHD.DAT
tSU.DAT
tDH
tR
tSU.STO
tBUF
tHD.WP
Write Cycle Timing
Stop condition
Start condition
SCL
SDA
D0 in
Write data
(Address (n))
ACK
tWC
(Internally controlled)
REJ03C0364-0001 Rev.0.01 Dec. 28, 2007
Page 6 of 22
6 Page R1EX24008AxxS0I
Write Operations(WP=Low)
Byte Write: (Write operation during WP=Low status)
A write operation requires an 8-bit device address word with R/W = “0”. Then the EEPROM sends
acknowledgment "0" at the ninth clock cycle. After these, the 8k bit EEPROM receives 8-bit memory
address words. Upon receipt of this memory address, the EEPROM outputs acknowledgment "0" and
receives a following 8-bit write data. After receipt of write data, the EEPROM outputs acknowledgment
"0". If the EEPROM receives a stop condition, the EEPROM enters an internally-timed write cycle and
terminates receipt of SCL, SDA inputs until completion of the write cycle. The EEPROM returns to a
standby mode after completion of the write cycle.
www.DataSheetB4yUt.ceoWmrite Operation
WP
8k
Start
Device
address
1010
Memory
address (n)
Write data (n)
W
ACK
R/W
ACK
ACK
Stop
REJ03C0364-0001 Rev.0.01 Dec. 28, 2007
Page 12 of 22
12 Page | ||
Seiten | Gesamt 24 Seiten | |
PDF Download | [ R1EX24008ASAS0I Schematic.PDF ] |
Teilenummer | Beschreibung | Hersteller |
R1EX24008ASAS0A | Two-wire serial interface 8k EEPROM | Renesas Technology |
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