M24256 256千比特的速率串行I²C总线的EEPROM三线芯片启动
The M24512-W, M24512-R, M24512-HR, M24256-BW, M24256-BR and M24256-BHRdevices are I²C-compatible electrically erasable programmable memories (EEPROM). They are organized as 64 Kb × 8 bits and 32 Kb × 8 bits, respectively.I²C uses a two-wire serial interface, comprising a bidirectional data line and a clock line. The devices carry a built-in 4-bit Device Type Identifier code (1010) in accordance with the I²C bus inition.
The device behaves as a slave in the I²C protocol, with all memory operations synchronized by the serial clock. Read and Write operations are initiated by a Start condition, generated by the bus master. The Start condition is followed by a device select code and Read/Write bit (RW) (as described in Table 2), terminated by an acknowledge bit.
When writing data to the memory, the device inserts an acknowledge bit during the 9th bit time, following the bus master’s 8-bit transmission. When data is read by the bus master, the bus master acknowledges the receipt of the data byte in the same way. Data transfers are terminated by a Stop condition after an Ack for Write, and after a NoAck for Read.
M24256 型号:
| Generic Part Number | Storage Capacity | Serial Interface | Marketing Status | Automotive Grade | Supply Voltage(Vcc) | Supply Voltage(Vcc) | Clock Frequency(fSCL) | Package |
| spec | min | max | max | |||||
| kB | V | V | MHz | |||||
| M24256-BHR | 256 | I²C | Active | - | 1.8 | 5.5 | 1 | SO8; TSSOP8 |
| M24256-BR | 256 | I²C | Active | - | 1.8 | 5.5 | 0.4 | SO8; TSSOP8; WLCSP-R |
| M24256-BW | 256 | I²C | Active | - | 2.5 | 5.5 | 0.4 | SO 08 WIDE .208 (EIAJ); SO8; TSSOP8 |
| M95256 | 256 | SPI | Active | Yes | 4.5 | 5.5 | 5 | SO8 |
| M95256-R | 256 | SPI | Active | - | 1.8 | 5.5 | 2 | SO8; TSSOP8; WLCSP-R |
| M95256-W | 256 | SPI | Active | Yes | 2.5 | 5.5 | 5 | SO 08 WIDE .208 (EIAJ); SO8; TSSOP8 |
M24256 特性:
- Two-wire I²C serial interface supports the 1 MHz protocol
- Supply voltage ranges:
– 1.8 V to 5.5 V (M24xxx-R)
– 2.5 V to 5.5 V (M24xxx-W) - Write Control input
- Byte and Page Write
- Random and sequential read modes
- Self-timed programming cycle
- Automatic address incrementing
- Enhanced ESD/latch-up protection
- More than 1 000 000 Write cycles
- More than 40-year data retention
- Packages
– ECOPACK? (RoHS compliant)
M24256 技术支持与电子电路设计开发资源下载
- M24256-BHR 数据手册DataSheet下载.PDF
- 相关产品选型(
Excel 文档格式) - 串行EEPROM存储器选型指南
- ST与其他品牌EEPROM选型对照表
- 面向低压EEPROM的8引脚微型封装（MLP） 2x3（宣传册,PDF）
- 串行EEPROM,工业标准级与专用存储器 （产品手册,PDF）
- 串行EEPROM – 汽车应用的首选产品 （选择指南, PDF）
- AN2014 - 应用笔记 - 一个设计者如何最好地利用ST串行EEPROM（应用笔记,PDF）
- ST和竞争对手Atmel、Macronix、Holtek、Oki、Winbond的对照 (产品彩页, PDF)
- RFID和射频内存产品 . PDF
- 提升灵活性与world'sn ° 1 EEPROM的供应商. PDF
- 意法半导体应用支持. PDF
- 汽车级半导体器件. PDF
- 周围半导体机顶盒应用. PDF
