BU97540KV-M Datasheet, PDF (1/70 Pages) Rohm – Multi-function Segment Drivers

Datasheet
LCD Segment Drivers
Multi-function Segment Drivers
BU97540KV-M
MAX335 Segment(67segx5COM)
General Description
Key Specifications
The BU97540KV-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 BU97540KV-M can drive up to 335
LCD Segments directly. The BU97540KV-M can also
control up to 9 general-purpose output ports.
These products also incorporate a key scan circuit that
 Supply Voltage Range:
+
+2.7V to +6.0V
 Operating Temperature Range:
-40°C to +85°C
 Max Segments:
335 Segments
 Display Duty:
1/1,1/3,1/4,1/5 Selectable
 Bias:
1/1,1/2,1/3,1/4 Selectable
 Interface:
3Wire Serial Interface
accepts input from up to 30 keys to reduce printed circuit
board wiring
Packages
Features
 AEC-Q100 Qualified ^(Note1)
VQFP80
W(Typ) × D(Typ) × H(Max)
 Key input function for up to 30 keys (A key scan is
performed only when a key is pressed.)
 Supports 1 chip(Master) mode
and 2 chip(Master + Slave) mode
 Either 1/5, 1/4, 1/3 or 1/1 duty (static) can be selected
with the serial control data.
1 chip mode(only Master):
1/5 duty drive: Up to 335 segments can be driven
1/4 duty drive: Up to 272 segments can be driven
1/3 duty drive: Up to 204 segments can be driven
1/1 duty drive: Up to 68 segments can be driven
2 chip mode(Master + Slave):
VQFP80
14.00mm x 14.00mm x 1.60mm
1/5 duty drive: Up to 680 segments can be driven
1/4 duty drive: Up to 548 segments can be driven
1/3 duty drive: Up to 411 segments can be driven
1/1 duty drive: Up to 137 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
Applications
 Car audio, Home electrical appliance,
Meter equipment etc.
○Product structure：Silicon monolithic integrated circuit
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© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product has no designed protection against radioactive rays
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TSZ02201-0P4P0D300970-1-2
29.Jun.2015 Rev.002