BU91530KVT-M Datasheet, PDF (1/60 Pages) Rohm – Multi-function LCD Segment Drivers

Datasheet
LCD Segment Drivers
Multi-function LCD Segment Drivers
BU91530KVT-M
MAX 445 Segment(89SEGx5COM)
General Description
The BU91530KVT-M is 1/5, 1/4, 1/3 or 1/1 duty
general-purpose LCD driver that can be used for
frequency display in electronic tuners under the control of
a microcontroller. The BU91530KVT-M can drive up to
445 LCD Segments directly. The BU91530KVT-M can
also control up to 9 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 wring.
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 1/5, 1/4, 1/3 or 1/1 duty (static)
can be selected with the serial control data.
1/5 duty drive: Up to 445 segments can be driven
1/4 duty drive: Up to 360 segments can be driven
1/3 duty drive: Up to 270 segments can be driven
1/1 duty drive: Up to 90 segments can be driven
 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 9 ports)
 Built-in OSC circuit
 Integrated Power-on Reset Circuit
 No external component
 Low power consumption design
 Supports Line and Frame Inversion
(Note1) _{Grade 3}
Key Specifications
■ Supply Voltage Range:
+2.7V to +6.0V
■ Operating Temperature Range: -40°C to +85°C
■ Max Segments:
445 Segments
■ Display Duty
1/1, 1/3, 1/4, 1/5 Selectable
■ Bias:
1/2, 1/3 Selectable
■ Interface:
3wire Serial Interface
Package
W (Typ.) x D (Typ.) x H (Max.)
TQFP100V
16.00mm x 16.00mm x 1.20mm
Applications
 Car Audio, Home Electrical Appliance,
Meter Equipment etc.
Typical Application Circuit
Key Matrix
+5V
(Note1)
From
Control
To Control
KS1/S79
|
KS6/S84
VDD
KI1/S85
|
COM1
KI5/S89 COM2
COM3
COM4
COM5/S78
S1/P1/G1
SCE
SCL
SDI
SDO
S9/P9/G9
S10
S77
OSC/S90
(P1/G1) _{(General purpose/PWM ports)}
(P9/G9) (For use control of backlight)
LCD Panel
(Up to 445
Segments)
(Note1) Insert capacitors between VDD and VSS C≥0.1uF
Figure 1. Typical Application Circuit
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product is not designed protection against radioactive rays.
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TSZ02201-0P4P0D301190-1-2
19.Aug.2015 Rev.001