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參數(shù)資料
| 型號： | 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 |
| 文件頁數(shù)： | 6/42頁 |
| 文件大?。?/td> | 501K |
| 代理商： | M24256-BFMB6TG/K |
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Device operation
M24256-BF, M24256-BR, M24256-BW, M24256-DR
Doc ID 6757 Rev 21
3.5
Addressing the memory array
To start communication between the bus master and the slave device, the bus master must
initiate a Start condition. Following this, the bus master sends the device select code, shown
in Table 2 (on Serial Data (SDA), most significant bit first).
The device select code consists of a 4-bit device type identifier, and a 3-bit Chip Enable
“Address” (E2, E1, E0). To address the memory array, the 4-bit Device Type Identifier is
1010b.
Up to eight memory devices can be connected on a single I2C bus. Each one is given a
unique 3-bit code on the Chip Enable (E0, E1, E2) inputs. When the device select code is
received, the device only responds if the Chip Enable Address is the same as the value on
the Chip Enable (E0, E1, E2) inputs.
The 8th bit is the Read/Write bit (RW). This bit is set to 1 for Read and 0 for Write operations.
If a match occurs on the device select code, the corresponding device gives an
acknowledgment on Serial Data (SDA) during the 9th bit time. If the device does not match
the device select code, it deselects itself from the bus, and goes into Standby mode.
Table 6.
Operating modes
Mode
RW bit
WC(1)
1.
X = VIH or VIL.
Bytes
Initial sequence
Current Address
Read
1
X
1
Start, device select, RW = 1
Random Address
Read
0X
1
Start, device select, RW = 0, Address
1
X
re-Start, device select, RW = 1
Sequential Read
1
X
1
Similar to Current or Random Address
Read
Byte Write
0
VIL
1
Start, device select, RW = 0
Page Write
0
VIL
64
Start, device select, RW = 0
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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器 256kB Serial I2C 3-Chip Enable 1 MHz RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率: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 IC bus EEPROM with three Chip Enable lines |
| M24256-BHRDW6TP | 功能描述:電可擦除可編程只讀存儲器 512 Kbit/256 Kbit serial 電可擦除可編程只讀存儲器 RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率: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器 512Kbit and 256Kbit bus 電可擦除可編程只讀存儲器 RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率: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器 513 Kbit/256 Kbit serial 電可擦除可編程只讀存儲器 RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率: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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