BU9795AFV-LBE2 ROHM

Datasheet MAX 108 segments (SEG27COM4) Standard LCD Segment Drivers BU9795AFV-LB This is the product guarantees long time support in Key Specifications Industrial market. Supply Voltage Range: +2.5V to +5.5V Operating Temperature Range: -40C to +85C Features Max Segments:BU9795AFV-LB 108 Segments Long Time Support Product for Industrial Display Duty: 1/4 Applications. Bias: 1/2, 1/3 Selectable Integrated RAM for Display Data (DDRAM) : Interface: 3wire Serial Interface 35 4bit LCD Drive Output : Package W (Typ.) x D (Typ.) x H (Max.) 4 Common Output, 27Segment Output Integrated Buffer AMP for LCD driving Integrated Oscillator Circuit No External Components Low Power Consumption Design Applications Industrial Equipment Telephone FAX Portable Equipment (POS, ECR, PDA etc.) SSOP-B40 DSC 13.60mm x 7.80mm x 2.00mm DVC Car Audio Home Electrical appliance Meter Equipment Etc. Typical Application Circuit VDD VDD COM0 VLCD COM1 COM2 COM3 INHb CSB Controller Segment SD LCD SCL SEG4 SEG5 OSCIN TEST VSS SEG30 Internal Oscillator Circuit Mode Figure 1. Typical application circuit Product structureSilicon monolithic integrated circuit This product has no designed protection against radioactive rays. www.rohm.com TSZ02201-0P4P0D300510-1-2 2013 ROHM Co., Ltd. All rights reserved. 1/26 TSZ2211114001 26.Feb.2014 Rev.002DatasheetDatasheet BU9795AFV-LB MAX 108 segments (SEG27COM4) Block Diagrams / Pin Configurations / Pin Descriptions BU9795AFV-LB COM0COM3 SEG4 SEG3 0 VDD LCD voltage generator Common Segment driver driver LCD BIAS SELECTOR Common Blink timing DDRAM counter generator VLCD INHb Command Command OSCIN register Data Decoder OSCILLATOR Power On Reset Serial inter face IF FILTER VSS TEST CSB SD SCL Figure 2. Block Diagram Figure 3. Pin Configuration (TOP VIEW) Table 1 Pin Description Pin Name Pin No. I/O Function Input terminal for turn off display INHb 36 I H : turn on display L : turn off display Test input (ROHM use only) TEST 35 I Must be connected to VSS External clock input OSCIN 31 I Ext. clock and Int. clock can be changed by command. Must be connected to VSS when using internal oscillation circuit. SD 34 I Serial data input SCL 33 I Serial data transfer clock CSB 32 I Chip select : L active VSS 30 GND VDD 29 Power supply VLCD 28 I Power supply for LCD driving 1 to 23, SEG4 to 30 O SEGMENT output for LCD driving 37 to 40 COM0 to 3 24 to 27 O COMMON output for LCD driving www.rohm.com TSZ02201-0P4P0D300510-1-2 2013 ROHM Co., Ltd. All rights reserved. 2/26 TSZ2211115001 26.Feb.2014 Rev.002 SEG8 SEG7 SEG9 SEG6 SEG10 SEG5 SEG4 SEG11 SEG12 INHb SEG13 TEST SEG14 SDA SEG15 SCL SEG16 CSB SEG17 OSCIN SEG18 VSS SEG19 VDD SEG20 VLCD SEG21 COM3 SEG22 COM2 SEG23 COM1 SEG24 COM0 SEG25 SEG30 SEG26 SEG29 SEG27 SEG28