The SED1520 is a dot matrix LCD driver LSI intended for display of characters and graphics. The bit-addressable display data, which is sent from a microcomputer, is stored in a built-in display data RAM and generates the LCD drive signal.
The SED1520 incorporates innovative circuit design strategies to assure very low current dissipation and a wide range of operating voltages. With these features, the SED1520 permits the user to implement high-performance handy systems operating from a miniature battery.
In order for the user to adaptively configure his system, the SED1520 family offers two application forms. One form allows an LCD display of 12 characters 2 lines with an indicator with a single chip. The other is dedicated to driving a total of 80 segments, enabling a medium-size display to be achieved by using a minimum number of drivers.
Low-power CMOS technology
Fast CPU 8-bit data interface 80xx, 68xx
Segment output . . . . . . . . . . 61 outputs
Common output . . . . . . . . . . 16 outputs
Duty cycle . . SED1520 . . . 1/16 to 1/32 SED1521 . . . 1/8 to 1/32
Built-in display data RAM. . . 2560 bits
Rich display command setting
On-chip CR oscillation circuit
Recommended expansion segment driver: 80 bit
Master/slave operation is supported
Low power consumption . . . 30& 181 W
LCD voltage . . . . . . . . . . . . . 3.5 to 13V
Single power supply. . . . . . . 2.4 to 7.0V |
