2D/3D/CAD
- VQFP80 Footprint / Symbol
BU97550KV-M
BU97550KV-M
Low Duty LCD Segment Drivers for Automotive applications
BU97550KV-M is a 1/8, 1/7, 1/5, 1/4, 1/3duty or Static general-purpose LCD driver that can be used for automotive applications and can drive up to 528 LCD Segments. This product can support VA LCD displays, which has better optical performance with higher LCD voltage driving and higher frame frequency driving. It can control up to 9 general-purpose outputs / PWM output ports for LED backlighting and LED button illumination realizing less flicker by various frequency setting function. It can also support a key scan function that detects a maximum of 30 key inputs to reduce PCB wiring and to minimize microcontroller size and cost. It can support LCD contrast adjustment by its EVR function and TTL compatible input interface is also available, these are well-suited for wide-voltage range of MCUs.
Product Detail
Part Number | BU97550KV-ME2
Status |
Recommended
Package |
VQFP80
Unit Quantity | 1000
Minimum Package Quantity | 1000
Packing Type | Taping
RoHS |
Yes
Functional Safety:
Category : FS supportive
A product that has been developed for automotive use and is capable of supporting safety analysis with regard to the functional safety.
Specifications:
Common Standard
AEC-Q100 (Automotive Grade)
Grade
Automotive
Segment Element
528
Duty
1/8, 1/7, 1/5, 1/4, 1/3, Static
Bias
1/4, 1/3, 1/2
Elements of MUX 1:1
70
Elements of MUX 1:3
210
Elements of MUX 1:4
280
Elements of MUX 1:5
345
Elements of MUX 1:8
528
Interface [line serial]
3wire+KEYOUT
Interface Voltage (Min.)[V]
2.7
Interface Voltage (Max.)[V]
6.0
Power Supply for LCD (Min.) [V]
2.7
Power Supply for LCD (Max.) [V]
6.0
Max GPO [port]
9
Max KEYSCAN [Key]
30
TTL input Support
Yes
LCD Driving Waveform
Line/Frame
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
85
Package Size [mm]
14x14 (t=1.6)
Features:
- 1/8, 1/7, 1/5, 1/4, 1/3duty or Static setting selectable
1/8duty driving: Max 528 segments
1/7duty driving: Max 469 segments
1/5duty driving: Max 345 segments
1/4duty driving: Max 280 segments
1/3duty driving: Max 210 segments
Static driving: Max 70 segments - 1/4, 1/3 or 1/2 bias setting selectable
- Support wide range of operation voltage from 2.7V to 6.0V,
which can support TN LCD and VA LCD display. - Integrated LCD voltage driving circuit
- Integrated oscillation circuit for LCD frame frequency
- Line or Frame inversion driving selectable
- Integrated 9ch general purpose outputs/ PWM outputs (SEG selectable)
- Support 256 step PWM function to realize backlight/ button LED illumination
- Support LCD frame frequency from 49Hz to 391Hz, total 16setting
- Support PWM frequency from 146Hz to 2.34KHz, total 16setting
- Support 3 wire serial interface + KEYOUT
- Support TTL level input to connect 3.3V MCU directly
- Support Max 30 key input detection (SEG selectable)
- Integrated EVR function to adjust LCD contrast
- Integrated voltage detected type power on reset circuit
- No external components required
- Low power consumption design
- Qualified AEC-Q100 Grade3
Design Resources
Technical Articles
Schematic Design & Verification
- Impedance Characteristics of Bypass Capacitor
Thermal Design
- What Is Thermal Design
- Basics of Thermal Resistance and Heat Dissipation
- Method for Calculating Junction Temperature from Transient Thermal Resistance Data
- Thermal Resistance
Tools
2D/3D/CAD
- VQFP80 Footprint / Symbol
Packaging & Quality
Package Information
- Package Information
- Anti-Whisker formation
Manufacturing Data
- Factory Information
Environmental Data
- UL94 Flame Classifications of Mold Compound
- Compliance with the ELV directive
- REACH SVHC Non-use Declaration
- RoHS Comission Delegated Directive
Export Information
- The Export Control Order
- Export Administration Regulations(EAR)