Frequently used in Toyota, Lexus, and Honda immobilizer units and dashboards. Chip Select Pin 2 (SK): Serial Clock Pin 3 (DI): Data Input Pin 4 (DO): Data Output Pin 5 (GND): Ground Pin 6 (ORG): Organization (8-bit or 16-bit mode selection) Pin 7 (PE): Program Enable Pin 8 (VCC): Power Supply Building a Portable EEPROM Clip Setup
| Chip Family | iProg Pin (Function) | Chip Pin | Label | | :--- | :--- | :--- | :--- | | | 1 (Vcc) | 8 | Vcc | | | 4 (GND) | 4 | GND | | | 16 (SCL) | 6 | Clock | | | 15 (SDA) | 5 | Data | | | WP to GND | 7 | Write Protect | | 25Cxx (SPI) | 1 (Vcc) | 8 | Vcc | | | 4 (GND) | 4 | GND | | | 6 (SCK) | 6 | Clock | | | 7 (SI) | 5 | MOSI | | | 8 (SO) | 2 | MISO | | | 5 (CS) | 1 | Chip Select | | 93Cxx (Microwire) | 1 (Vcc) | 8 | Vcc | | | 4 (GND) | 4 / 5 | GND / NC | | | 14 (DO) | 2 | Data Out | | | 15 (DI) | 5 | Data In | | | 16 (SK) | 6 | Clock | | | 17 (CS) | 1 | Chip Select | | | 13 (ORG) | 7 | Organization (8/16 bit) | iprog eeprom adapter pinout portable
The acts as a bridge. It routes the necessary lines from the DB44 connector down to simpler, localized interfaces—typically standard 8-pin dual in-line (DIP8) sockets or Zero Insertion Force (ZIF) sockets designed for 24C, 25C, and 93C series chips. 2. iProg Standard EEPROM Adapter Pinout Schema Frequently used in Toyota, Lexus, and Honda immobilizer
| Adapter Pin Position | Function (I2C Mode - 24Cxx) | Function (SPI Mode - 25Cxx) | ZIF Socket Pin (Reference) | | :--- | :--- | :--- | :--- | | | A0 / Address | /CS (Chip Select) | Pin 3 | | Left Side (Bottom) | GND (Ground) | GND (Ground) | Pin 4 | | Right Side (Top) | VCC (Power) | VCC (Power) | Pin 28 | | Right Side (Bottom) | SDA (Data) | SO/SI (Data I/O) | Pin 27 | | (Note: SCL/CLK is often routed internally) | SCL (Clock) | CLK (Clock) | Pin 2 | Use contact cleaner
The EEPROM adapter is arguably the most frequently used accessory, as it allows direct access to the memory chips embedded in dashboards, airbag modules, and ECUs.
Poor contact on the 8-pin clip is the most common cause of reading errors. Use contact cleaner.