The **M95256-RMC6TG** is a specific variant of the M95256 series manufactured by STMicroelectronics. It is a high-performance Serial SPI (Serial Peripheral Interface) EEPROM memory chip. --- ## 1. Technical Specifications The table below highlights the primary electrical and technical parameters of this specific part: | Parameter | Specification | | :--- | :--- | | **Memory Size** | 256 Kbit (32,768 x 8 bits) | | **Interface** | SPI (Serial Peripheral Interface) | | **Clock Frequency** | Up to 20 MHz (at 4.5V - 5.5V) | | **Supply Voltage (Vcc)** | 1.8V to 5.5V | | **Package Type** | UFDFPN8 (Ultra-thin Fine pitch Dual Flat No-lead) | | **Temperature Range** | -40°C to +85°C (Industrial Grade) | | **Write Cycles** | 4 Million cycles (typical) | | **Data Retention** | 200 Years | --- ## 2. Key Features * **Byte and Page Write:** Supports writing a single byte or a page of up to 64 bytes. * **Write Protection:** Includes a Hardware Write Protection pin (`/WP`) and software-definable block protection. * **Low Power Consumption:** Optimized for battery-powered devices with low standby current. * **High Reliability:** Advanced ECC (Error Correction Code) is often integrated into newer ST EEPROMs to ensure data integrity. --- ## 3. Part Number Decoding The suffix **-RMC6TG** provides specific information about the physical and logistical properties of the chip: | Code Segment | Meaning | | :--- | :--- | | **M95256** | Base Part Number (256 Kbit SPI EEPROM) | | **-R** | Voltage Range: 1.8V to 5.5V | | **MC** | Package: UFDFPN8 (2 x 3 mm footprint) | | **6** | Temperature: Industrial (-40°C to +85°C) | | **TG** | Packing: Tape and Reel (RoHS compliant) | --- ## 4. Typical Pin Configuration The device uses an 8-pin layout common for SPI EEPROMs: ```text 1. /S (Chip Select) 8. Vcc (Supply Voltage) 2. Q (Serial Data Out) 7. /HOLD or /Reset 3. /W (Write Protect) 6. C (Serial Clock) 4. Vss (Ground) 5. D (Serial Data In) ``` --- ## 5. Applications Due to its small UFDFPN8 footprint and wide voltage range, this part is commonly found in: * **Mobile Devices:** Storing configuration settings and calibration data. * **Medical Equipment:** Logging small amounts of sensor data. * **IoT Modules:** Storing network credentials and firmware parameters. * **Automotive/Industrial:** Parameters for microcontrollers where space is limited.