BU97930MUV is a multifunction LCD segment driver from ROHM. It can drive up to 108 segments (SEG27×COM4). The chip integrates display data RAM (DDRAM), LCD drive output, LED driver circuit, support PWM output, standby mode, power reset, oscillator and etc.
The BU97930MUV is a multifunction LCD segment driver with integrated RAM, a 3‑wire serial interface, and support for up to 108 segments. It includes built‑in LED driver circuitry, power‑on‑reset, oscillator, and blink functions, making it suitable for telephone, fax, POS, car audio, and home appliance displays.
The document provides detailed electrical characteristics, absolute maximum ratings, recommended operating conditions, pin descriptions, typical application circuits, and handling precautions for designers and manufacturers.
| Supply voltage VDD | 1.8 V to 3.6 V |
|---|---|
| Supply voltage VLCD | 2.7 V to 5.5 V |
| Maximum segments | 108 segments (SEG27×COM4) |
| LED output current per port | 20 mA |
| GPO output current | 10 mA |
| Interface type | 3‑wire serial (CSB, SCL, SD) |
| Integrated RAM for display data (DDRAM) | 28 × 4 bits (112 bits) |
It can drive up to 108 segments (SEG27×COM4).
It uses a 3‑wire serial interface (CSB, SCL, SD) for command and data transfer.