The **M93C56-RMB7TP** is a specific variant of the 2-Kbit serial MICROWIRE EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by STMicroelectronics. It is commonly used for parameter storage in automotive and industrial applications. --- ### 1. Key Technical Specifications | Parameter | Specification | |:---|:---| | **Memory Size** | 2 Kbit (2048 bits) | | **Organization** | Configurable: 128 x 16-bit or 256 x 8-bit | | **Interface** | MICROWIRE (3-wire Serial Interface) | | **Operating Voltage** | 1.8V to 5.5V | | **Clock Frequency** | 2 MHz (at 4.5V - 5.5V) | | **Package Type** | UFDFPN8 (Ultra-thin Fine pitch Dual Flat No-lead) | | **Temperature Range** | -40°C to +85°C (Industrial Grade) | --- ### 2. Functional Characteristics * **Instruction Set:** Supports standard MICROWIRE instructions including `READ`, `WRITE`, `ERASE`, `WEN` (Write Enable), and `WDS` (Write Disable). * **Write Protection:** The device includes a software write-protection mechanism via the Write Enable/Disable instructions to prevent accidental data corruption. * **Data Retention:** Guaranteed for more than 40 years. * **Endurance:** Capable of more than 1 million (1,000,000) write cycles. * **Sequential Read:** Allows for continuous data streaming from the memory array. --- ### 3. Pinout Configuration (UFDFPN8) The device typically uses an 8-pin layout. Below is the standard mapping for the M93C series: | Pin Number | Name | Description | |:---:|:---:|:---| | 1 | **S** | Chip Select | | 2 | **C** | Serial Clock | | 3 | **D** | Serial Data Input | | 4 | **Q** | Serial Data Output | | 5 | **Vss** | Ground | | 6 | **ORG** | Organization Select (x8 or x16) | | 7 | **DU** | Don't Use / Reserved | | 8 | **Vcc** | Supply Voltage | --- ### 4. Part Number Breakdown: `M93C56-RMB7TP` * **M93**: STMicroelectronics MICROWIRE EEPROM family. * **C56**: 2-Kbit density. * **-R**: Low voltage range (1.8V to 5.5V). * **MB**: UFDFPN8 package (2x3 mm). * **7**: Device tested with a specific high-reliability process (often refers to Grade 7 temperature or specialized screening). * **T**: Tape and Reel packing. * **P**: ECOPACK2 (RoHS compliant/Lead-free). ---