Display driver and keyboard scan chip


Display driver and keyboard scan control
@#120#Model
@#100#Digital Tube
@#160#LED/segment LCD
Button
Interface
@#120#Operating Voltage
@#220#Package
@#570#Features

CH457

128/—

3 lines/2 lines

3.0V ~ 6.0V

SOP28

Display new IC technology, compatible with a variety of previous generation products,support ordinary

lamp beads, single panel layout

CH450

6*8

48/—

48

2 lines

3.0V ~ 5.5V

SOP20/DIP20

Small package

CH451

8*8

64/

64

4 lines

2.8V ~ 5.3V

SOP28/DIP24S

Support multi-chip cascading, BCD decoding,moving, blinking, etc.

CH452

8*8

64/

64

4 lines/2 lines

2.8V ~ 5.3V

SOP28/DIP24S

Support multi-chip cascading, beam, BCD decoding, moving, blinking, etc.

Support 2-way GPO universal output

CH453

16*8

128/

64

2 lines

3.0V ~ 5.3V

SOP28/DIP28S

Cost-effective, pin-compatible with CH423

CH454

8*16/7*17

128/

64

2 lines

2.8V ~ 5.3V

SOP28/SDIP32

Support 11 segments, 14 segments, 16 segments × 8 and 17 segments × 7, etc.

Support 8 channels of GPIO general purpose input

and output

CH455

4*8

32/

28

2 lines

2.7V ~ 5.3V

SOP18/SOP16/DIP18

Support combination key

CH456

16*8

128/

64

2 lines

3.0V ~ 5.3V

SOP20/DIP20

Less pins, large drive current, simple peripheral

CH422

4*8

32/

2 lines

3.0V ~ 5.3V

SOP16

Support IO extension

CH423

16*8

128/

2 lines

2.9V ~ 5.3V

SOP28/DIP28S

Support IO extension

CH462

—/32*4

4 lines

3.0V ~ 5.5V

LQFP44

Optional 1/2 or 1/3 bias, 1/2 or 1/3 or 1/4 duty LCD specifications

CH463

—/16*8

35

2 lines

3.0V ~ 5.5V

LQFP44

Support 1/4 duty, 1/3 bias or 1/8 duty, 1/4 bias and other LCD specifications.

Support combination key.