IC Pinout & Voltage Guide
EEPROM Chip Pinout & SOP8 Clamp Flashing Guide
Prevent burning memory chips or corrupting odometer dumps. Visual Pin 1 dot orientation, wiring assignments, and safe 3.3V jumper settings for CH341A, RT809H, and T48.
Active Protocol
25xxx & 95xxx Series (SPI Bus High-Speed EEPROM)
Supported Motorcycles: KTM Duke 390 TFT Dashboards, Kawasaki Ninja 300, Royal Enfield Hunter 350 / Meteor
Operating Voltage: 3.3V (Strict 3.3V recommended)
Package: SOIC-8 / TSSOP-8
Programmer Settings:
CH341A: 25 SPI Flash mode | RT809H: 25/95 EEPROM auto-identify
SOIC-8 Top View Orientation
25020 / 25040
METER SOFT BD
1
2
3
4
8
7
6
5
Red Dot = Pin 1: Always align the RED wire on your SOP8 test clamp with Pin 1.
Pin Function Matrix
Standard pinout assignments for programming clamp
| Pin | Signal Name | Function & Wire Description |
|---|---|---|
| 1 | /CS | Chip Select (Active Low) |
| 2 | SO | Serial Output (MISO) |
| 3 | /WP | Write Protect (Pull High to 3.3V) |
| 4 | GND | Ground (0V Reference) |
| 5 | SI | Serial Input (MOSI) |
| 6 | SCK | Serial Clock |
| 7 | /HOLD | Hold Input (Pull High to 3.3V) |
| 8 | VCC | Power Supply (+3.3V Strict) |
In-Circuit Clamp Flashing Diagnostics & Tips
Hold & WP Pins Floating: On SPI 95xxx chips, both Pin 3 (/WP) and Pin 7 (/HOLD) MUST be connected to 3.3V during reading, otherwise communication is locked.