BU91520KV-M Datasheet, PDF (1/45 Pages) Rohm – Low Duty LCD Segment Driver

Datasheet
Low Duty LCD Segment Driver
for Automotive application
BU91520KV-M
MAX 276 Segments (69SEG × 4COM)
General Description
The BU91520AKV-M is 1/4 or 1/3-Duty general-purpose
LCD driver that can be used for automotive applications.
It can support operating temperature of up to +105°C
and qualified for AEC-Q100 Grade2, as required for
automotive applications..
It can drive up to 276 LCD Segments directly. It can
control up to 6 general-purpose output ports. It can also
support a key scan function that detects a maximum of
30 key inputs.
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 ports)
 Built-in OSC circuit
 The INHb pin can force the display to the off state
 Integrated Power-on Reset Circuit
 No external component
 Low power consumption design
 Supports Line and Frame Inversion
(Note1) _{Grade 2}
Applications
 Car Audio, Home Electrical Appliance,
Meter Equipment etc.
Key Specifications
■ Supply Voltage Range:
+2.7V to +6.0V
■ Operating Temperature Range: -40°C to +105°C
■ Max Segments:
276 Segments
■ Display Duty
1/3, 1/4 Selectable
■ Bias:
1/2, 1/3 Selectable
■ Interface:
3wire Serial Interface
Special Characteristics
■ Electrostatic Discharge Voltage(HBM):
■ Latch-up Current:
±2000V
±100mA
Package
VQFP80
W (Typ.) x D (Typ.) x H (Max.)
VQFP80
14.00mm x 14.00mm x 1.60mm
Typical Application Circuit
Key matrix
(P1/G1)
(P6/G6)
(General purpose/PWM ports)
(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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22.Jan.2016 Rev.001