9729K
9729K is BU9729K manufactured by ROHM.
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 mand / Data Register LCD mon Driver 4bits
1 2 3 4 mand Decoder
Timing Generator mon Counter
OSC1
OSC2
Standard ICs
BU9729K
- Pin assignments
SEG10 SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 17 16 SEG2 15
24 SEG11 25
SEG12
SEG1
SEG13
SEG14
SEG15
SEG16...
