R1EX24512BSAS0A/R1EX24512BTAS0A
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 EEPROMs receive 2 sequence 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.
Byte Write Operation
WP
Device
1st Memory
2nd Memory
512k
address
1010
W
address (n)
address (n)
Write data (n)
Start
ACK
R/W
ACK
ACK
ACK
Stop
Page Write:
The EEPROM is capable of the page write operation which allows any number of bytes up to 128 bytes to be written in
a single write cycle. The page write is the same sequence as the byte write except for inputting the more write data.
The page write is initiated by a start condition, device address word, memory address(n) and write data (Dn) with every
ninth bit acknowledgment. The EEPROM enters the page write operation if the EEPROM receives more write data
(Dn+1) instead of receiving a stop condition. The a0 to a6 address bits are automatically incremented upon receiving
write data (Dn+1). The EEPROM can continue to receive write data up to 128 bytes. If the a0 to a6 address bits
reaches the last address of the page, the a0 to a6 address bits will roll over to the first address of the same page and
previous write data will be overwritten. Upon receiving a stop condition, the EEPROM stops receiving write data and
enters internally-timed write cycle.
Page Write Operation
WP
Device
1st Memory
2nd Memory
512k
address
1010
W
address (n)
address (n)
Write data (n)
Write data (n+m)
Start
ACK
R/W
ACK
ACK
ACK
ACK
Stop
R10DS0025EJ0001 Rev.0.01
Sep, 01, 2010
Page 10 of 17
相关PDF资料
R1EX25004ASA00A#S0 IC EEPROM 4K 5MHZ 8SOP
R1EX25016ASA00A#S0 IC EEPROM 16K 5MHZ 8SOP
R1EX25064ASA00A#S0 IC EEPROM 64K 5MHZ 8SOP
R1EX25512ATA00A#S0 IC EEPROM 512K 5MHZ 8TSSOP
RA1P011FP1 CONN PLUG 11POS STRAIGHT GOLD
RACD03-700 LED DRIVER 3W 10-43V OUT SGL
RACD06-700 LED DRIVER 6W 3-8.5V OUT LED DR
RACD12-500 LED DRIVER 0.5AOUT 3-24VDC OUT
相关代理商/技术参数
R1EX24512BSAS0G 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:Two-wire serial interface 512k EEPROM
R1EX24512BSAS0I 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:Two-wire serial interface 512k EEPROM (64-kword × 8-bit)
R1EX24512BSAS0I#K0 制造商:Renesas Electronics Corporation 功能描述:SERIAL EEPROM 512KB I2C, SOP8, 制造商:Renesas Electronics Corporation 功能描述:SERIAL EEPROM 512KB I2C, SOP8, I-GRADE - Tape and Reel
R1EX24512BSAS0I#S0 制造商:Renesas Electronics Corporation 功能描述:SERIAL EEPROM 512KB I2C, SOP8, 制造商:Renesas Electronics Corporation 功能描述:SERIAL EEPROM 512KB I2C, SOP8, I-GRADE - Tape and Reel 制造商:Renesas Electronics Corporation 功能描述:IC EEPROM 512KBIT 1MHZ 8SOP
R1EX24512BSAS0I_13 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:Two-wire serial interface 512k EEPROM (64-kword ?? 8-bit)
R1EX24512BSAS0IK0 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:Two-wire serial interface 512k EEPROM (64-kword ?? 8-bit)
R1EX24512BSAS0IS0 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:Two-wire serial interface 512k EEPROM (64-kword ?? 8-bit)
R1EX24512BTAS0A 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:Two-wire serial interface 512k EEPROM (64-kword ?? 8-bit)