The **M95128-RMB6TP** is a high-performance, 128-Kbit serial SPI (Serial Peripheral Interface) EEPROM manufactured by STMicroelectronics. This specific variant is often used in space-constrained applications due to its ultra-thin package. --- ### 1. Key Technical Specifications The following table outlines the core electronic parameters of the device: | Feature | Specification | | :--- | :--- | | **Memory Size** | 128 Kbits (16,384 x 8 bits) | | **Interface** | SPI (Mode 0 and Mode 3) | | **Clock Frequency** | Up to 20 MHz (at 4.5V - 5.5V) | | **Supply Voltage (Vcc)** | 1.8V to 5.5V | | **Operating Temperature** | -40°C to +85°C | | **Page Size** | 64 Bytes | | **Write Cycle Time** | 5 ms (Maximum) | | **Data Retention** | 40 Years | | **Endurance** | 4 Million Write Cycles | --- ### 2. Part Number Breakdown Understanding the suffix codes is crucial for identifying the specific hardware characteristics: - **M95128**: Base part number for the 128-Kbit SPI EEPROM family. - **-R**: Indicates the low voltage range (1.8V to 5.5V). - **MB**: Refers to the **UFDFPN8** (Ultra-thin Fine pitch Dual Flat No-lead) package, also known as MLP. - **6**: Indicates Industrial temperature range (-40°C to +85°C). - **T**: Indicates Tape & Reel packing. - **P**: Indicates Lead-free and Halogen-free (ECOPACK2). --- ### 3. Pin Configuration The device typically utilizes an 8-pin layout: 1. **S# (Chip Select):** Enables the device for communication. 2. **Q (Serial Data Output):** Data shifts out on the falling edge of the clock. 3. **W# (Write Protect):** Hardware protection against unauthorized write operations. 4. **Vss:** Ground. 5. **D (Serial Data Input):** Data shifts in on the rising edge of the clock. 6. **C (Serial Clock):** Provides timing for the interface. 7. **HOLD# (Hold):** Pauses communication without resetting the chip. 8. **Vcc:** Supply voltage. --- ### 4. Electronic Features & Protections - **Write Protection:** The device includes both software and hardware write protection. The Status Register contains "Block Protect" bits that allow the user to protect quarters, halves, or the entire memory array. - **Clocking:** It supports high-speed clocking, making it suitable for fast data logging or firmware storage. - **Power Management:** The device features a low-power CMOS technology with a standby current consumption of typically less than 2 μA. ---