ML9475

FEDL9475-01 Issue Date: Mar. 1, 2010 ML9475 1/3 or 1/4 Duty, 40-Output LCD Driver GENERAL DESCRIPTION The ML9475 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 160 segments can be driven directly; when 1/3 duty is selected, an LCD of up to 120 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  40 segment outputs 1/4 duty : Up to 160 segments can be displayed. 1/3 duty : Up to 120 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 : 56-pin plastic QFP (QFP56-P-910-0.65-2K) 1/20 http://www.Datasheet4U.com FEDL9475-01 ML9475 BLOCK DIAGRAM SEG1 SEG40 DVDD 40-Dot Segment Driver Bias Res. 40-Ch Data Selector TEST 40 40 40 40 40-Bit Latch4 40-Bit Latch3 40-Bit Latch2 40-Bit Latch1 LOAD LATCH SELECTOR 40 DATA_IN CLOCK 46(40 + 6)-bit Shift Register OSC OSC TIMING GENERATOR COM1 CLKSEL 3/4SEL COMMON Driver COM2 COM3 COM4 RESET LVDD VSS 2/ 20 FEDL9475-01 ML9475 PIN CONFIGURATION (TOP VIEW) DATA_IN 44 CLKSEL 56 55 54 53 52 51 50 49 48 47 46 45 43 CLOCK 3/4SEL RESET COM...