BU97520AKV-M Datasheet, PDF (1/44 Pages) Rohm – AEC-Q100 Qualified

LCD Segment Drivers
Multi-function LCD Segment Drivers
BU97520AKV-M
MAX 276 Segment(69SEG x 4COM)
General Description
The BU97520AKV-M is 1/4 or 1/3-Duty general-purpose
LCD driver that can be used for frequency display in
electronic tuners under the control of a microcontroller.
The BU97520AKV-M can drive up to 276 LCD
Segments directly. The BU97520AKV-M can also
control up to 6 general-purpose output ports.
These products also incorporate a key scan circuit that
accepts input from up to 30 keys to reduce printed
circuit board wiring.
Features
„ AEC-Q100 Qualified ^(Note1)
„ 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
„ Serial data control of frame frequency for common
and segment output waveforms.
„ Serial data control of switching between the segment
output port , PWM output port and general-purpose
output port functions.(Max 6 port)
„ Built-in OSC circuit
„ The INHb pin can force the display to the off state.
„ Integrated Power-on Reset circuit
„ No external component required
„ Low power consumption design
„ Supports Line and Frame Inversion
(Note1) Grade 3
Key Specifications
„ Supply Voltage Range:
„ Operating Temperature Range:
„ Max Segments:
„ Display Duty:
„ Bias:
„ Interface:
+2.7V to +6.0V
-40°C to +85°C
276 Segments
1/3, 1/4 selectable
1/2, 1/3 selectable
3wire serial interface
Packages
VQFP80
W(Typ.)×D(Typ.)×H(Max.)
VQFP80
14.00mm x 14.00mm x 1.60mm
Applications
„ Car audio, Home electrical appliance,
Meter equipment etc.
Typical Application Circuit
Key matrix
(P1/G1)
(P6/G6)
(Gen eral purpose/PWM p orts)
(For use control of backlight)
KS1/S56
|
KS6/S61
KI1/S62
|
KS5/S66
COM1
COM2
COM3
COM4
S1/P1/G1
S2/P2/G2
+5V
(Note2)
From
Co n troll er
To Controller
VDD
INHb
SCE
SCL
SDI
SDO
S6/P6/G6
S7
S66
S67
S68
OSC/S69
LCD Panel
(Up to 276
Seg men ts )
(Note2) Insert capacitors between VDD and VSS C > 0.1uF.
Figure 1. Typical Application Circuit
○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays
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