BU97950FUV-E2 ROHM

...... Datasheet Standard LCD Segment Drivers BU97950FUV MAX 280 segments (SEG35COM8) Features Key Specifications Integrated RAM for display data (DDRAM): Supply Voltage Range: +2.5V to +5.5V 35 x 8bit (Max 280 Segment) LCD drive power supply Range: +2.5V to +5.5V LCD drive output: Operating Temperature Range: -40C to +85C 8 Common output, 35 Segment output Max Segments: 280 Segments Integrated Buffer AMP for LCD driving Display Duty: 1/8 Integrated Oscillator circuit Bias: 1/4 No external components Interface: 2wire serial interface Low power consumption design Independent power supply for LCD driving Integrated Electrical volume register (EVR) function Packages W (Typ.) x D (Typ.) x H (Max.) Applications Telephone FAX Portable equipment (POS, ECR, PDA etc.) DSC DVC Car audio Home electrical appliance Meter equipment etc. TSSOP-C48V 8.1mm x 12.5mm x 1.0mm Typical Application Circuit VDD VLCD COM0 VDD VLCD COM7 SD SCL Controller Segment LCD SEG0 SEG1 SEG34 VSS Figure 1. Typical Application Circuit Product structureSilicon monolithic integrated circuit This product is not designed for protection against radioactive rays. www.rohm.com TSZ02201-0A0A2D300090-1-2 2013 ROHM Co., Ltd. All rights reserved. 1/21 TSZ2211114001 19.Apr.2018 Rev.005 Not Recommended for New DesignsBU97950FUV MAX 280 segments (SEG35COM8) Block Diagrams / Pin Configurations / Pin Descriptions BU97950FUV (TSSOP-C48V) VDD SDA VLCD SCL COM0COM7 SEG0SEG34 VSS SEG21 VLCD LCD voltage generator SEG20 SEG22 common Segment SEG19 SEG23 driver driver SEG18 SEG24 SEG17 SEG25 SEG16 SEG26 LCD BIAS SEG15 SEG27 SELECTOR SEG14 SEG28 common SEG13 SEG29 DDRAM counter SEG12 SEG30 SEG11 SEG31 SEG10 SEG32 VSS SEG9 SEG33 SEG8 SEG34 Command Command SEG7 COM0 register Data Decoder SEG6 COM1 OSCILLATOR Power On Reset SEG5 COM2 serial inter face SEG4 COM3 SEG3 COM4 IF FILTER SEG2 COM5 VDD SEG1 COM6 SEG0 COM7 SDA SCL Figure 2. Block Diagram Figure 3. Pin Configuration (TOP VIEW) Table 1 Pin Description Terminal Terminal No. I/O Function SDA 48 I/O Serial data input SCL 47 I Serial data transfer clock VSS 3 I GND VDD 1 I Power supply VLCD 2 I Power supply for LCD drive 4 to 24 SEG0 to 35 O SEGMENT output for LCD drive 33 to 46 COM0 to 7 25 to 32 O COMMON output for LCD drive www.rohm.com TSZ02201-0A0A2D300090-1-2 2013 ROHM Co., Ltd. All rights reserved. 2/21 TSZ2211115001 19.Apr.2018 Rev.005 Not Recommended for New Designs