Overview
The LC75821E and LC75821W are general-purpose LCD display drivers that can be used for frequency display in microprocessor-controlled radio receivers and in other display applications.
   
Features
• 53 segment outputs (the maximum for static drive)
• Two drive types: static (1/1) duty (53 segments) and 1/2
    duty (104 segments)
• Data input: 3 serial input pins
• INH pin for turning off all display output
• The difference form the LC7582: The LC75821E,
    LC75821W are A/D converter, DSP function-removed
    versions of the LC7582 of which the functions other
    than the two can be used with pin compatibility with
    the LC7582 kept.