M95128-DWDW4TP/K

The M95128-DWDW4TP/K is STMicroelectronics’ M95128 128‑kbit serial SPI EEPROM. It stores 16 KB of non-volatile data and is accessed via a standard SPI interface (CS, SCK, SI, SO). It supports random byte reads and writes, with writes initiated after a Write Enable (WREN) and indicated by a Write In Progress (WIP) status bit. Features include write protection (WP) and low-power standby/power‑down modes. The DWDW4TP/K suffix identifies the specific package, temperature range, and lot code for this variant (e.g., an 8‑pin package with industrial temperature). Common uses are storing configuration data, calibration constants, small lookup tables, and other non-volatile data for microcontroller-based systems. For exact electrical characteristics (voltage range, access times, page size, timing), consult the M95128 datasheet and the DWDW4TP/K variant specification.

Equivalent parts (128 Kbit SPI serial EEPROM, 8-pin): Microchip 25LC128A and 25AA128. Other vendors offer pin-compatible 128 Kbit SPI EEPROMs; verify voltage (2.7–5.5 V), page size, and timing to ensure compatibility.

Key features of M95128-DWDW4TP/K (128 Kbit I2C serial EEPROM):
- Capacity: 128 Kbit (16K × 8)
- Interface: I2C two-wire serial bus; standard mode (100 kHz) and fast mode (400 kHz)
- Organization: 16K x 8 memory array
- Addressing: 3 hardware address pins (A0–A2) + WP (write protect)
- Page write: typically 16-byte page write capability
- Read/write operations: random and sequential read; auto-increment addressing
- Write cycle time: ~5 ms
- Endurance: 1,000,000 write cycles
- Data retention: ~40 years
- Supply voltage: 2.7–5.5 V
- Operating temperature: -40°C to 125°C (industrial)
- Power: low-power operation with standby mode
- Package: 8-pin device (DWDW family/soic-like package) suitable for tape-and-reel assembly
Note: exact packaging and timing can vary by lot; refer to the datasheet for precise specs.

- Pin count: 8 pins (SO8/DW package)
- Function: 128 kbit serial EEPROM (I2C two-wire interface), organized as 16 kB, non-volatile memory with A0–A2 address pins and WP for write protection.

- Manufacturer: STMicroelectronics.
- What kind of company: A multinational semiconductor company that designs and manufactures integrated circuits and electronic components (memory, sensors, microcontrollers, etc.), headquartered in Geneva, Switzerland (Franco-Italian origin).

M95128-DWDW4TP/K is a 128-kbit serial EEPROM. Typical application areas include:
- Storing non-volatile data in embedded systems (device configuration, calibration data, parameters, serial numbers, firmware version)
- Automotive (ECUs, instrumentation, sensor data storage)
- Industrial controls and sensors
- Consumer electronics (set-top boxes, audio/video gear, wearables)
- Medical devices and networking equipment
- Computer peripherals and small data logging applications

8-pin surface-mount SO-8 (SOP-8) package.