PTC PT16557
The PT16557 is 1/3 duty and 1/4 duty LCD display drivers that can directly drive up to 164 segments and can control up to four general-purpose output ports. These products also incorporate a key scan circuit that accepts input from up to 30 keys to reduce printed circuit board wiring.| Part No. | PT16557 |
|---|---|
| Datasheet | PT16557 Download |
| Manufacturer |  PTC |
| Description | Duty LCD Display Drivers |
| Buy | Stock & Price |
DESCRIPTION
FEATURES
● Key input function for up to 30 keys (A key scan is performed only when a key is pressed.)● 1/3 duty and 1/4 duty drive schemes can be controlled from serial data.
● 1/2 bias and 1/3 bias drive schemes can be controlled from serial data.
● Capable of driving up to 126 segments using 1/3 duty and up to 164 segments using 1/4 duty.
● Sleep mode and all segments off functions that are controlled from serial data.
● Switching between key scan output and segment output can be controlled from the serial data.
● The key scan operation enabled/disabled state can be controlled from the serial data. BLOCK DIAGRAM PT16557 1/3, 1/4 Duty LCD Display Drivers with Key Input Function
● Switching between segment output port and general-purpose output port can be controlled from serial data.
● The common and segment output waveform frame frequency can be controlled from the serial data.
● Switching between RC oscillator mode and external clock mode can be controlled from the serial data.
