BU9729K Datasheet (Rohm) - Segment-type LCD driver

BU9729K, Segment-type LCD driver

Pin name OSC1 OSC2 VSS VC VLCD VDD SCK Pin No.

1 2 3 4 5 6 7 * I I/O I O * * Function These are the I / O pins for the internal oscillator.

Resistance should be connected between the pins when the internal clock is operating.

When an external clock is operating, input should

BU9729K Features

* 1) Serial interface (8-bit length). 2) Display RAM: 72bits, internal (up to 72 segments can be displayed). 3) Internal power supply circuit for liquid crystal drive. 4) Display duty: 1 / 4. 5) Low-voltage and low-current operation supported.

* Block diagram VLCD VC LCD Driver Bias