BU97501KV Datasheet, PDF (1/33 Pages) Rohm – Integrated RAM for display data

Datasheet
Multifunction LCD Segment Driver
BU97501KV MAX 204 segments (51SEG×4COM)
Features
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
Applications
Telephone
FAX
Portable equipment (POS, ECR, PDA etc.)
DSC
DVC
Car audio
Home electrical appliance
Meter equipment
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 +85°C
■ Max Segments:
204 Segments
■ Display Duty:
1/3, 1/4 selectable
■ Bias:
1/2, 1/3 selectable
■ Interface:
3wire serial interface
Package
VQFP64
W(Typ.)×D(Typ.)×H(Max.)
VQFP64
12.00mm x 12.00mm x 1.60mm
Typical Application Circuit
KMeyatMrixatrix
+5V
(Note1)
+5.5V
(Note1)
From
Controller
To Controller
KS1/S42
|
KS6/S47
VDD
KI1/S48
|
KI5/S52
COM1
COM2
COM3
P1/S1
P2/S2
VLCD
OSC
RESB
CSB
SCL
SD
DO
P4/S4
S5
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
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111ï½¥14ï½¥001
○This product is not designed for protection against radioactive rays.
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TSZ02201-0P4P0D300390-1-2
11.Apr.2014 Rev.004