LC75847T: LCD Driver, 1/4 and 1/3 Duty, General-Purpose
The LC75847T is 1/3 duty and 1/4 duty general-purpose LCD driver that can be used for frequency display in electronic tuners under the control of a microcontroller. The LC75847T can drive an LCD with up to 420 segments directly. The LC75847T can also control up to 8 general-purpose output ports.
Features- Switching between 1/3 duty and 1/4 duty drive techniques under serial data control.
- Switching between 1/2 bias and 1/3 bias drive techniques under serial data control.
- Up to 318 segments for 1/3 duty drive and 420 segments for 1/4 duty drive can be displayed.
- Serial data input supports CCB format communication with the system controller.
- Serial data control of the power-saving mode based backup function and all the segments forced off function.
- Serial data control of switching between the segment output port and the general-purpose output port functions.
- Serial data control of frame frequency for common and segment output waveforms.
- High generality, since display data is displayed directly without decoder intervention.
- Built-in display contrast adjustment circuit
- Independent VLCD for the LCD driver block
- The INH pin can force the display to the off state.
- RC oscillator circuit
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Data Sheets (1)
Package Drawings (1)
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| LC75847T-E | Active | Pb-free | TQFP-120 | 932AZ | 4 | Tray JEDEC | 450 | $5.2132 |
| LC75847TS-E | Lifetime | Pb-free | TQFP-120 | 932AZ | 4 | Tray JEDEC | 450 | $5.8392 |
Specifications
| Product | Segments | Key Detection | VDD Min (V) | VDD Max (V) | VLCD Min (V) | VLCD Max (V) | VI for Interface (V) | Operating Temperature (°C) | Output Ports | PWM Outputs | Character Generator | Reset | Contrast Adjustment | Control Command |
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| LC75847T-E | 1/4 Duty: 420 (388)
1/3 Duty: 318 (294) | | 2.7 | 6 | 2.7 | 6 | VDD | -40 to 85 | 8 | | | | Yes | |
