## Overview of M95080-RBN6 The **M95080-RBN6** is a low-voltage, high-speed 8-Kbit Serial SPI (Serial Peripheral Interface) EEPROM manufactured by STMicroelectronics. It is commonly used for non-volatile data storage in applications requiring low power consumption and high reliability. ### Key Specifications | Parameter | Specification | | :--- | :--- | | **Memory Size** | 8 Kbit (1,024 x 8 bits) | | **Interface** | SPI (Mode 0 and Mode 3) | | **Clock Frequency** | Up to 20 MHz (at Vcc > 4.5V) | | **Operating Voltage** | 1.8V to 5.5V | | **Package** | PDIP8 (Plastic Dual In-line Package) | | **Operating Temp** | -40°C to +85°C | | **Endurance** | 4 Million Write Cycles | | **Data Retention** | 200 Years | --- ### Pin Configuration (PDIP8) The device typically follows a standard 8-pin layout: 1. **S# (Chip Select):** When low, the device is selected. 2. **Q (Serial Data Output):** Data is shifted out on this pin during a read operation. 3. **W# (Write Protect):** Hardware protection to prevent write operations. 4. **Vss:** Ground. 5. **D (Serial Data Input):** Data, address, and instructions are latched on this pin. 6. **C (Serial Clock):** Provides the timing for data transfer. 7. **HOLD# (Hold):** Pauses communication without deselecting the device. 8. **Vcc:** Supply voltage. --- ### Technical Features * **Page Write:** Supports writing up to 32 bytes in a single instruction cycle. * **Write Protection:** Includes a Write Enable Latch (WEL) bit and software-programmable block protection (none, 1/4, 1/2, or whole memory). * **High Reliability:** Optimized for industrial environments with high endurance cycles and long-term data retention. * **Low Power Consumption:** * Active Read Current: < 2 mA * Standby Current: < 1 µA (at 1.8V) ### Part Number Breakdown (M95080-RBN6) | Code Segment | Meaning | | :--- | :--- | | **M95** | SPI Family EEPROM | | **080** | 8 Kbit Density | | **-R** | Voltage Range: 1.8V to 5.5V | | **BN** | Package: PDIP8 | | **6** | Temperature Grade: Industrial (-40°C to +85°C) | --- ### Example Application: SPI Initialization ```cpp // Example pseudocode for initializing an SPI Read void read_eeprom(uint16_t address) { digitalWrite(CHIP_SELECT, LOW); // Select device SPI.transfer(0x03); // Read Instruction (READ) SPI.transfer((address >> 8)); // MSB of Address SPI.transfer((address & 0xFF)); // LSB of Address uint8_t data = SPI.transfer(0x00);// Shift out data digitalWrite(CHIP_SELECT, HIGH); // Deselect device } ```