參數(shù)資料
型號(hào)： M24256-BFMB6TG/K
廠商： STMICROELECTRONICS
元件分類： PROM
英文描述： 32K X 8 I2C/2-WIRE SERIAL EEPROM, PDSO8
封裝： 2 X 3 MM, ROHS COMPLIANT, UFDFPN-8
文件頁(yè)數(shù)： 9/42頁(yè)
文件大?。?/td> 501K
代理商： M24256-BFMB6TG/K
M24256-BF, M24256-BR, M24256-BW, M24256-DR
Device operation
Doc ID 6757 Rev 21
3.9
Identification Page Write (M24256-DR only)
The Identification page is written by issuing an ID Write instruction. This instruction uses the
same protocol and format as the Page Write in memory array, except for the following
differences:
●
Device Type Identifier = 1011b
●
MSB address bits A15/A6 are don't care except for address bit A10 which must be ‘0’.
LSB address bits A5/A0 define the byte address inside the identification page.
If the Identification page is locked, the data bytes transferred during the Identification Page
Write instruction are not acknowledged (NoAck).
3.10
Lock Identification Page (M24256-DR only)
The Lock Identification Page instruction (Lock ID) permanently locks the Identification page
in read-only mode. The Lock ID instruction is similar to Byte Write (into memory array) with
the following specific conditions:
●
Device Type Identifier = 1011b
●
Address bit A10 must be ‘1’; all other address bits are don't care
●
The data byte must be equal to the binary value xxxx xx1x, where x is don't care.
If the Identification Page is locked, the data bytes transferred during the ID Write instruction
are not acknowledged (NoAck).
3.11
ECC (error correction code) and write cycling
The M24256-Bx and M24256-DRdevices offer an ECC (error correction code) logic which
compares each 4-byte word with its six associated ECC EEPROM bits. As a result, if a
single bit out of 4 bytes of data happens to be erroneous during a Read operation, the ECC
detects it and replaces it by the correct value. The read reliability is therefore much improved
by the use of this feature.
Note however that even if a single byte has to be written, 4 bytes are internally modified
(plus the ECC bits), that is, the addressed byte is cycled together with the other three bytes
making up the word. It is therefore recommended to write by word (4 bytes) in order to
benefit from the larger amount of Write cycles.
The M24256-Bx and M24256-DR devices are qualified at 1 million (1 000 000) Write cycles,
using a cycling routine that writes to the device by multiples of 4-bytes.
相關(guān)PDF資料
PDF描述
M24308/4-260 15 CONTACT(S), MALE, D SUBMINIATURE CONNECTOR
M24308/4-2 15 CONTACT(S), MALE, D SUBMINIATURE CONNECTOR
M24308/4-303 15 CONTACT(S), MALE, D SUBMINIATURE CONNECTOR
M24308/4-325 15 CONTACT(S), MALE, D SUBMINIATURE CONNECTOR
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M24256-BFMC6TG 功能描述:電可擦除可編程只讀存儲(chǔ)器 256kB Serial I2C 3-Chip Enable 1 MHz RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
M24256-BHR 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:512 Kbit and 256 Kbit serial IC bus EEPROM with three Chip Enable lines
M24256-BHRDW6TP 功能描述:電可擦除可編程只讀存儲(chǔ)器 512 Kbit/256 Kbit serial 電可擦除可編程只讀存儲(chǔ)器 RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
M24256-BHRMN6P 功能描述:電可擦除可編程只讀存儲(chǔ)器 512Kbit and 256Kbit bus 電可擦除可編程只讀存儲(chǔ)器 RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
M24256-BHRMN6TP 功能描述:電可擦除可編程只讀存儲(chǔ)器 513 Kbit/256 Kbit serial 電可擦除可編程只讀存儲(chǔ)器 RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
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