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Rohm Semiconductor Electronic Components Datasheet

BU91520KV-M Datasheet

Low Duty LCD Segment Driver

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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 structureSilicon monolithic integrated circuit This product is not designed protection against radioactive rays.
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
1/41
TSZ02201-0P4P0D301340-1-2
22.Jan.2016 Rev.001


Rohm Semiconductor Electronic Components Datasheet

BU91520KV-M Datasheet

Low Duty LCD Segment Driver

No Preview Available !

BU91520KV-M
Block Diagram
INHb
OSC/
S69
SCE
SCL
SDI
SDO
VDD
VSS
COMMON Driver
--- ---
SEGMENT Driver
Clock / Timing
Generator
Control Register
PWM Register
Serial
Interface
VDET
LCD v oltage
Generator
VLCD
VLCD1
VLCD2
Shift Register
KEY Buffer
KEY SCAN
Pin Configuration
Figure 2. Block Diagram
KI2 / S63
KI3 / S64
KI4 / S65
KI5 / S66
COM1
COM2
COM3
COM4
S67
VDD
S68
SDO
VSS
OSC / S69
INHb
SCE
SCL
SDI
S1 / P1 / G1
S2 / P2 / G2
61
80
40
S42
S41
S40
S39
S38
S37
S36
S35
S34
S33
S32
S31
S30
S29
S28
S27
S26
S25
S24
S23
21
Figure 3. Pin Configuration (TOP VIEW)
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
2/41
TSZ02201-0P4P0D301340-1-2
22.Jan.2016 Rev.001


Part Number BU91520KV-M
Description Low Duty LCD Segment Driver
Maker ROHM
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