LC75808W

Product Summary

The LC75808W is a 1/8 to 1/10 duty LCD display drivers that can directly drive up to 600 segments and can control up to four general-purpose output ports. The LC75808W also incorporate a key scan circuit that accepts input from up to 30 keys to reduce printed circuit board wiring.

Parametrics

LC75808W absolute maximum ratings: (1)Maximum supply voltage VDD: –0.3 to +7.0 V; (2)Maximum supply voltage VLCD: –0.3 to +12.0 V; (3)Input voltage CE, CL, DI, INH –0.3 to +7.0 V; (4)Input voltage OSC, KI1 to KI5, TEST –0.3 to VDD +0.3 V; (5)Input voltage VLCD1, VLCD2, VLCD3, VLCD4 –0.3 to VLCD +0.3 V; (6)Output voltage DO –0.3 to +7.0 V; (7)Output voltage OSC, KS1 to KS6, P1 to P4 –0.3 to VDD +0.3 V; (8)Output voltage VLCD0, S1 to S60, COM1 to COM10 –0.3 to VLCD +0.3 V; (9)Output current S1 to S60 300 μA; (10)Output current COM1 to COM10 3 mA; (11 Output current KS1 to KS6 1 mA; (12)Output current P1 to P4 5 mA; (13)Allowable power dissipation Pd max Ta = 85°C 200 mW; (14)Operating temperature Topr –40 to +85 °C; (15)Storage temperature Tstg –55 to +125 °C.

Features

LC75808W features: (1)Key input function for up to 30 keys (A key scan is performed only when a key is pressed.); (2)1/8duty–1/4bias, 1/9duty–1/4bias, and 1/10duty–1/4bias drive schemes can be controlled from serial data: 1/8duty–1/4bias: up to 480 segments; 1/9duty–1/4bias: up to 540 segments; 1/10duty–1/4bias: up to 600 segments; (3)Sleep mode and all segments off functions that are controlled from serial data; (4)Serial data I/O supports CCB format communication with the system controller; (5)Direct display of display data without the use of a decoder provides high generality; (6)Built-in display contrast adjustment circuit; (7)Up to 4 general-purpose output ports are included; (8)Independent LCD driver block power supply VLCD; (9)Provision of an on-chip voltage-detection type reset circuit prevents incorrect displays; (10)The INH pin is provided. This pin turns off the display, disables key scanning, and forces the general purpose output ports to the low level; (11)RC oscillator circuit.

Diagrams