The **M95160-RDL1T** is a specific variant of the M95160 series, which is a **16-Kbit serial SPI (Serial Peripheral Interface) EEPROM** manufactured by STMicroelectronics. Below is a detailed breakdown of its electronic characteristics and specifications. --- ### 1. General Specifications The device is designed for low-power, non-volatile data storage. The "R" in the part number signifies its specific low-voltage operating range. | Feature | Specification | | :--- | :--- | | **Memory Size** | 16 Kbits (2048 x 8 bits) | | **Interface** | SPI (Mode 0 and Mode 3) | | **Clock Frequency** | Up to 10 MHz (at 2.5V - 5.5V) | | **Operating Voltage (Vcc)** | 1.8V to 5.5V | | **Package Type** | MLP / DFN (Dual Flat No-lead) | | **Temperature Range** | -40°C to +85°C (Industrial Grade) | --- ### 2. Pin Configuration (Typical MLP 2x3) Since this part is in a small form-factor package, understanding the pinout is crucial for PCB layout: | Pin Name | Description | Function | | :--- | :--- | :--- | | **S (CS)** | Chip Select | Activates the device when pulled Low. | | **D (MOSI)** | Serial Data Input | Receives instructions, addresses, and data. | | **Q (MISO)** | Serial Data Output | Transmits data out to the MCU. | | **C (SCK)** | Serial Clock | Provides timing for data transfer. | | **W (WP)** | Write Control | Hardware protection against write operations. | | **HOLD** | Hold | Pauses communication without resetting CS. | | **Vcc / Vss** | Power / Ground | 1.8V - 5.5V supply and reference ground. | --- ### 3. Key Electronic Features * **Page Write Mode:** Allows writing up to 32 bytes in a single write cycle, significantly improving efficiency compared to byte-by-byte writing. * **Write Protection:** * **Software Protection:** Block protection bits in the Status Register allow you to lock quarters, halves, or the entire memory array. * **Hardware Protection:** The `WP` pin can be used to freeze the Status Register, preventing accidental data corruption. * **Durability:** * **Endurance:** More than 4 million write cycles. * **Data Retention:** More than 200 years (at room temperature). * **Self-Timed Write Cycle:** Once a write command is sent, the internal logic handles the programming, usually completing in less than 5ms. --- ### 4. Part Number Breakdown: M95160-RDL1T To understand the specific physical attributes, we decode the suffix: | Code Segment | Meaning | | :--- | :--- | | **M95** | SPI Family EEPROM | | **160** | 16 Kbit Density | | **-R** | Voltage range: 1.8V to 5.5V | | **DL** | Package: MLP 2x3mm (DFN8) | | **1** | Temperature Range: -40 to +85°C | | **T** | Packing: Tape & Reel | --- ### 5. Application Circuit Example (Code Snippet) If you were interfacing this with an Arduino or C-based MCU, the logic for reading a byte would look like this: ```cpp // Basic SPI Read sequence for M95160 void readByte(uint16_t address) { digitalWrite(CHIP_SELECT, LOW); // Select the EEPROM SPI.transfer(0x03); // READ Instruction SPI.transfer((address >> 8) & 0xFF); // Address High Byte SPI.transfer(address & 0xFF); // Address Low Byte byte data = SPI.transfer(0x00); // Read the data byte digitalWrite(CHIP_SELECT, HIGH); // Deselect } ``` ---