## M24C08-RDS3TP/G Technical Overview The **M24C08-RDS3TP/G** is a specific variant of the M24C08 family of Electrically Erasable Programmable Read-Only Memory (EEPROM) devices manufactured by **STMicroelectronics**. It is widely used for non-volatile data storage in consumer electronics, industrial controls, and computing. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Memory Size** | 8 Kbit (1024 x 8 bits) | | **Interface** | $I^2C$ (Inter-Integrated Circuit) | | **Clock Frequency** | 400 kHz (Fast Mode) / 100 kHz (Standard) | | **Supply Voltage ($V_{CC}$)** | 1.8V to 5.5V | | **Package Type** | TSSOP8 (Thin Shrink Small Outline Package) | | **Operating Temperature** | -40°C to +125°C (Automotive Grade 3) | | **Write Cycles** | 4 million cycles | | **Data Retention** | 200 Years | --- ### 2. Functional Description The device is organized as four blocks of 256 bytes each. Because the $I^2C$ protocol uses 7-bit addressing, the M24C08 uses functional "Device Select" codes to navigate these blocks. #### Pin Configuration (TSSOP8) 1. **E2 (Chip Enable):** Used to define the device address. 2. **SDA (Serial Data):** Bi-directional pin used to transfer data in and out. 3. **SCL (Serial Clock):** Used to synchronize data transfer. 4. **WC (Write Control):** A hardware protection pin. If tied to $V_{CC}$, write operations are inhibited. If tied to $V_{SS}$ (Ground), the entire memory is writeable. 5. **VSS/VCC:** Ground and Supply voltage pins. --- ### 3. Understanding the Part Number Suffixes The string `RDS3TP/G` provides specific information about the packaging and grade: * **R:** Operating voltage range (1.8V to 5.5V). * **DS:** Refers to the TSSOP8 package (3x4.4 mm body). * **3:** Indicates **Grade 3** temperature range (-40 to +125 °C), making it suitable for high-heat environments. * **TP:** Tape & Reel packaging (for automated assembly). * **G:** ECOPACK2 (RoHS compliant/Green). --- ### 4. Application Circuit Example To interface this EEPROM with a microcontroller (MCU), pull-up resistors are required on the SDA and SCL lines. ```cpp // Typical I2C Write sequence (Pseudocode) 1. Start Condition 2. Send Device Address (0xA0 | Block Select) 3. Send Word Address (0x00 - 0xFF) 4. Send Data Byte 5. Stop Condition 6. Wait for Internal Write Cycle (approx. 5ms) ``` --- ### 5. Features and Benefits * **Byte and Page Write:** Supports writing a single byte or a page of up to 16 bytes. * **Random and Sequential Read:** Flexible data retrieval methods. * **Enhanced ESD Protection:** Designed to withstand high electrostatic discharge, exceeding 4000V (Human Body Model). * **Low Power Consumption:** Minimal current draw in standby mode, ideal for battery-powered devices.