DESCRIPTION The PT6530 are 1/3 duty and 1/4 duty LCD display drivers that can directly drive up to 300 segments and can control up to eight general-purpose output ports. These products also incorporate a key scan circuit that accepts input from up to 30 keys to reduce printed circuit board wiring. FEATURES • Key input function for up to 30 keys (A key scan is performed only when a key is pressed.) • 1/3 duty and 1/4 duty drive schemes can be controlled from serial data. • 1/2 bias and 1/3 bias drive schemes can be controlled from serial data. • Capable of driving up to 228 segments using 1/3 duty and up to 300 segments using 1/4 duty. • Sleep mode and all segments off functions that are controlled from serial data. • Segment output port/general-purpose output port function switching that is controlled from serial data. • Serial Interface for clock, Data Input, Data Output, Strobe pins. • Direct display of display data without the use of a decoder provides high generality. • Independent VLCD for the LCD driver block (VLCD can be set to in the range VDD – 0.5 to 6.0V) • Provision of an on-chip voltage-detection type reset circuit prevents incorrect displays. • RES pin provided for forcibly initializing the IC internal circuits. • RC oscillator circuit. APPLICATION • Electronic Equipment with LCD Display
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