BU97520AKV-ME2 ROHM

Datasheet LCD Segment Drivers Multi-function LCD Segment Drivers BU97520AKV-M MAX 276 Segment(69SEG x 4COM) General Description Key Specifications The BU97520AKV-M is 1/4 or 1/3 Duty General-purpose Supply Voltage Range: +2.7V to +6.0V LCD driver. The BU97520AKV-M can drive up to 276 Operating Temperature Range: -40C to +85C LCD Segments directly. The BU97520AKV-M can also Max Segments: 276 Segments control up to 6 General-purpose output pins / 6 PWM Display Duty: 1/3, 1/4 Selectable output pins. These products also incorporate a key scan Bias: 1/2, 1/3 Bias circuit that accepts input from up to 30 keys to reduce Interface: 3wire Serial Interface printed circuit board wiring. Package W(Typ) D(Typ) H(Max) Features (Note 1) AEC-Q100 Qualified Key Input Function for up to 30 Keys. (A key scan is performed only when a key is pressed.) Either 1/4 or 1/3 Duty can be Selected with the Serial Control Data. 1/4 Duty Drive: up to 276 Segments 1/3 Duty Drive: up to 207 Segments Selectable Display Frame Frequency for Common and Segment Output Waveforms. Configurable Output Pin to Segment Output / PWM VQFP80 Output / General-purpose Output.(Max 6 Pins) 14.00mm x 14.00mm x 1.60mm Built-in OSC Circuit The INHb Pin can Force the Display to the off State. Integrated Voltage Detect Type Power on Reset (VDET) Circuit No External Component Low Power Consumption Design Supports Line and Frame Inversion (Note 1) Grade 3 Applications Car Audio, Home Electrical Appliance, Meter Equipment etc. Typical Application Circuit Key matrix (P1/G1) (General purpose/PWM pins) (For use control of backlight) (P6/G6) KS1/S56 KI1/S62 COM1 COM2 KS6/S61 KI5/S66 COM3 COM4 S1/P1/G1 S2/P2/G2 VDD +5V (Note 2) S6/P6/G6 LCD Panel S7 (Up to 276 Segments) INHb SCE From Controller SCL S66 S67 SDI S68 OSC/S69 To Controller SDO (Note 2) Insert capacitors between VDD and VSS C 0.1F. Figure 1. Typical Application Circuit Product structure : Silicon 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. 1/42 TSZ22111 14 001 02.Aug.2019 Rev.008 BU97520AKV-M Block Diagram --- --- COMMON Driver SEGMENT Driver INHb Clock / Timing OSC/S69 Control Register PWM Register Generator SCE Shift Register SCL Serial SDI Interface LCD v oltage SDO Generator KEY Buffer VLCD VDD VLCD1 VDET KEY SCAN VLCD2 VSS Figure 2. Block Diagram Pin Configuration 61 40 KI2 / S63 S42 KI3 / S64 S41 KI4 / S65 S40 KI5 / S66 S39 COM1 S38 COM2 S37 COM3 S36 COM4 S35 S67 S34 VDD S33 S68 S32 SDO S31 VSS S30 OSC / S69 S29 INHb S28 SCE S27 SCL S26 SDI S25 S1 / P1 / G1 S24 S2 / P2 / G2 S23 80 21 Figure 3. Pin Configuration (TOP VIEW) www.rohm.com TSZ02201-0P4P0D300570-1-2 2014 ROHM Co., Ltd. All rights reserved. 2/42 02.Aug.2019 Rev.008 TSZ22111 15 001 11 2020 60 S3 / P3 / G3 KI1 / S62 S4 / P4 / G4 KS6 / S61 S5 / P5 / G5 KS5 / S60 COM4 S6 / P6 / G6 KS4 / S59 COM3 S7 KS3 / S58 COM2 S8 KS2 / S57 COM1 S9 KS1 / S56 S10 S55 S11 S54 S12 S53 S13 S52 KI5/S66 S14 S51 S68 S15 S50 KI4/S65 S67 S16 S49 KI3/S64 S17 S48 KI2/S63 S55 S18 S47 KI1/S62 S19 S46 S7 KS6/S61 S20 S45 S6/P6/G6 KS5/S60 S21 S44 KS4/S59 S22 S43 41 KS3/S58 S1/P1/G1 KS2/S57 KS1/S56