Description
Pin name OSC1 OSC2 VSS VC VLCD VDD SCK Pin No.
I I/O I O
Function These are the I / O pins for the internal oscillator.
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 Circuit
VDD VSS
SEG1 SD SCK C/D CS Serial Interface Address Counter Display Data RAM (DD RAM) LCD Segment Driver 18bits SEG18 SEG2
Command / Data Register LCD Common Driver 4bits
COM1 COM2 COM3 C.
BU9729K_Rohm.pdf
