Product Overview
The PCF85176H/1 from NXP Semiconductors is a 40×4 universal LCD driver for low multiplex rates. It generates drive signals for static or multiplexed LCDs with up to four backplanes and 40 segments, communicating via I2C at 400kHz. Packaged in a 64-pin TQFP (10x10mm).
Key Specifications
| Segments | 40 segment outputs |
| Backplanes | 4 (static, 2, 3, or 4 MUX) |
| Display RAM | 40 x 4-bit |
| Supply Voltage | 1.8V to 5.5V |
| LCD Supply | 2.5V to 6.5V |
| Interface | I2C, 400kHz |
| Supply Current | 7uA (max) |
| Package | TQFP-64 (10x10mm) |
| Operating Temperature | -40 to +85 C |
Features
- Single-chip LCD controller and driver
- Selectable backplane configuration: static, 2, 3, or 4 MUX
- Internal LCD bias generation with voltage-follower buffers
- Auto-incremented display data loading
- Display memory bank switching
- Versatile blinking modes
- Cascadable for large LCDs (up to 2560 segments)
- No external components required
Applications
- Consumer LCD displays
- Industrial instrument panels
- Home automation displays
- Metering and measurement readouts