ML9477

FEDL9477-01 Issue Date: Mar. 1, 2010 ML9477 1/3 or 1/4 Duty, 32-Output LCD Driver GENERAL DESCRIPTION The ML9477 is an LCD driver for dynamic display. It has a function to switch between 1/3 and 1/4 duty. When 1/4 duty is selected, an LCD of up to 128 segments can be driven directly; when 1/3 duty is selected, an LCD of up to 96 segments can be driven directly. FEATURES  Logic power supply voltage : 2.7 to 3.6 V, 4.5 to 5.5 V  Driver power supply voltage : 3.5 to 5.5 V  Operatin g temperature : 40 to +105°C  32 segment outputs 1/4 duty : Up to 128 segments can be displayed. 1/3 duty : Up to 96 segments can be displayed.  Serially interfaces with the CPU using the three signal lines of LOAD, DATA_IN, and CLOCK  Built-in RC oscillator circuit for LCD AC drive (the CLKSEL pin allows selecting an external clock input)  Built-in voltage-dividing resistor for bias voltage generation  Package : 48-pin plastic TQFP (TQFP48-P-0707-0.50-K) 1/20 http://www.Datasheet4U.com FEDL9477-01 ML9477 BLOCK DIAGRAM SEG1 SEG32 DVDD 32-Dot Segment Driver Bias Res.. 32-Ch Data Selector TEST 32 32 32 32 32-Bit Latch4 32-Bit Latch3 32-Bit Latch2 32-Bit Latch1 LOAD LATCH SELECTOR 32 DATA_IN CLOCK 38(32 + 6)-bit Shift Register OSC OSC TIMING GENERATOR COM1 CLKSEL 3/4SEL COMMON Driver COM2 COM3 COM4 RESET LVDD VSS 2/ 20 FEDL9477-01 ML9477 PIN CONFIGURATION (TOP VIEW) DATA_IN 38 CLKSEL 48 47 46 45 44 43 42 41 40 39 COM2 COM1 SEG1 SEG2 SEG3 SEG4 SEG5...