BU91501KV-M Datasheet, PDF (1/34 Pages) Rohm – Multi- function LCD Segment Drivers

Datasheet
LCD Segment Drivers
Multi- function LCD Segment Drivers
BU91501KV-M
MAX 204 Segment(51SEGx4COM)
General Description
The BU91501KV-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 BU91501KV-M can drive up to 204 LCD
Segments directly and control up to 4 general-purpose
output ports and up to 30 key input detection.
Features
 AEC-Q100 Qualified ^(Note)
 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
1/4 duty drive：Up to 204 segments
1/3 duty drive：Up to 156 segments
 Integrated RAM for display data (DDRAM)
 Segment/GPO (Max 4port) output mode selectable
 Support standby mode
 Integrated Power-on Reset circuit
 Integrated Oscillator circuit
 No external component
 Low power consumption design
(Note) Grade 2
Applications
 Car Audio, Home Electrical Appliance,
Meter Equipment etc.
Key Specifications
■ Supply Voltage Range:
2.7V to 6.0V
■ LCD drive power supply Range:
4.5V to 6.0V
■ Operating Temperature Range: -40°C to +105°C
■ Max Segments:
204 Segments
■ Display Duty:
1/3, 1/4 selectable
■ Bias:
1/2, 1/3 selectable
■ Interface:
3wire serial interface
Package
W (Typ.) x D (Typ.) x H (Max.)
VQFP64
12.00mm x 12.00mm x 1.60mm
Typical Application Circuit
Key Matrix
+5V
(Note1)
+5.5V
(Note1)
From
Controller
To Controller
KS1/S42
|
KS6/S47
VDD
KI1/S48
|
KI5/S52
VLCD
COM1
COM2
COM3
P1/S1
P2/S2
P4/S4
S5
RESB
CSB
SCL
SD
DO
S40
COM4/S41
(P1)
(P2)
(General purpose ports)
(For use control of backlight)
(P4)
LCD Panel
(Up to 204
Segments)
(Note1) Insert capacitors between VDD/VLCD and VSS C≥0.1uF.
Figure 1. Typical Application Circuit
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111ï½¥14ï½¥001
○This product is not designed protection against radioactive rays.
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TSZ02201-0P4P0D301120-1-2
8.July.2015 Rev.001