Datasheet LCD Segment Drivers Multi-function LCD Segment Drivers BU97530KVT MAX 445 Segment(89SEGx5COM) General Description Key Specifications The BU97530KVT is 1/5, 1/4, 1/3 duty or Static Supply Voltage Range: +2.7V to +6.0V General-purpose LCD driver. The BU97530KVT can Operating Temperature Range: -40C to +85C drive up to 445 LCD Segments directly. The Max Segments: 445 Segments BU97530KVT can also control up to 9 General-purpose Display Duty Static, 1/3, 1/4, 1/5 Selectable output pins / 9 PWM output pins. Bias: 1/2, 1/3 Selectable These products also incorporate a key scan circuit that Interface: 3wire Serial Interface accepts input from up to 30 keys to reduce printed circuit board wring. Features Package W (Typ) x D (Typ) x H (Max) Key Input Function for up to 30 Keys (A key scan is performed only when a key is pressed.) Either 1/5, 1/4, 1/3 Duty or Static Can be Selected with the Serial Control Data. 1/5 Duty Drive: Up to 445 Segments can be Driven 1/4 Duty Drive: Up to 360 Segments can be Driven 1/3 Duty Drive: Up to 270 Segments can be Driven Static Drive: Up to 90 Segments can be Driven Selectable Display Frame Frequency for Common and Segment Output Waveforms. Configurable Output Pin to Segment Output / PWM Output / General-purpose Output.(Max 9 Pins) Built-in OSC Circuit TQFP100V Integrated Voltage Detect Type Power on 16.00mm x 16.00mm x 1.20mm Reset(VDET) Circuit No External Component Low Power Consumption Design Supports Line and Frame Inversion Applications Car Audio, Home Electrical Appliance, Meter Equipment etc. Typical Application Circuit Key Matrix (P1/G1) (General purpose/PWM ports) (For use control of backlight) (P9/G9) KS1/S79 KI1/S85 COM1 COM2 KS6/S84 KI5/S89 COM3 CO M4 COM5/S78 LCD Panel S1/P1/G1 +5V VDD (Up to 445 (Note) Segments) S9/P9/G9 S10 SCE From SCL Control SDI S 77 OSC/S90 To Control SDO (Note) Insert capacitors between VDD and VSS C0.1F Figure 1. Typical Application Circuit Product structureSilicon monolithic integrated circuit This product is not designed protection against radioactive rays. www.rohm.com TSZ02201-0P4P0D300570-1-2 2014 ROHM Co., Ltd. All rights reserved. 1/56 TSZ22111 14 001 02.Aug.2019 Rev.006 BU97530KVT Block Diagram COMMON Driver SEGMENT Driver/Latch Clock /Timing OSC / S90 Control Register PWM Register Generator SCE Shift Register SCL Serial Interface SDI LCD voltage Generator SDO KEY BUFFER VLCD VDD VLCD1 VDET KEY SCAN VLCD2 VSS VSS Figure 2. Block Diagram Pin Arrangement 50 76 S50 S76 S77 S49 S48 COM5/S78 S47 COM4 S46 COM3 COM2 S45 COM1 S44 S43 KS1/S79 KS2/S80 S42 KS3/S81 S41 KS4/S8 KS4/S82 S40 2 KS5/S8 S39 KS5/S83 3 KS6/S8 S38 KS6/S84 4 S37 KI1/S85 S36 KI2/S86 KI3/S87 S35 S34 KI4/S88 KI5/S89 S33 VDD S32 DO SDO S31 VSS S30 OSC/S90 S29 SCCEE S28 S27 SCCLL S26 DI SDI 100 26 Figure 3. Pin Configuration(TOP VIEW) www.rohm.com TSZ02201-0P4P0D300570-1-2 2014 ROHM Co., Ltd. All rights reserved. 2/56 TSZ22111 15 001 02.Aug.2019 Rev.006 1 75 S75 S1/P1/G1 S2/P2/G2 S74 COM1 S3/P3/G3 S73 COM2 S4/P4/G4 S72 S5/P5/G5 S71 COM3 S6/P6/G6 S70 COM4 S7/P7/G7 S69 COM5/S78 S8/P8/G8 S68 S9/P9/G9 S67 S10 S66 S65 S11 S12 S64 S13 S63 S14 S62 S77 S15 S61 S16 KI5 / S89 S60 S76 S17 S59 KI4 / S88 S18 S58 S75 KI3 / S87 S57 S19 KI2 / S86 S56 S20 KI1 / S85 S55 S21 S10 S54 S22 KS6/ S84 S53 S23 S52 S24 KS5/ S83 S9/P9/G9 S51 S25 KS4/ S82 25 51 KS3/ S81 KS2/ S80 S1/P1/G1 KS1/ S79