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ML9477

LAPIS
Part Number ML9477
Manufacturer LAPIS
Description 1/3 or 1/4 Duty 32-Output LCD Driver
Published May 8, 2014
Detailed Description FEDL9477-01 Issue Date: Mar. 1, 2010 ML9477 1/3 or 1/4 Duty, 32-Output LCD Driver GENERAL DESCRIPTION The ML9477 is an...
Datasheet PDF File ML9477 PDF File

ML9477
ML9477


Overview
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 SEG6 SEG7 SEG8 SEG9 SEG10 37 CLOCK 3/4SEL RESET COM3 COM4 LVDD TEST OSC VSS NC 1 2 3 4 5 6 7 8 9 10 11 12 36 35 34 33 32 31 30 29 28 27 26 25 LOAD SEG32 SEG31 SEG30 SEG29 SEG28 SEG27 SEG26 SEG25 SEG24 SEG23 SEG22 21 22 23 SEG20 13 14 15 16 17 18 19 DVDD 20 SEG18 SEG19 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 48-Pin Plastic TQFP SEG17 SEG21 24 3/ 20 FEDL9477-01 ML9477 PIN DESCRIPTION Symbol I/O Description Pin for oscillation.
Has a Schmitt circuit built in.
...


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