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PDF BU9799KV Data sheet ( Hoja de datos )
| Número de pieza | BU9799KV | |
| Descripción | Standard LCD Segment Driver | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Datasheet
Standard LCD Segment Driver
BU9799KV MAX 200 segments (SEG50×COM4)
●Features
Integrated RAM for display data (DDRAM):
50 x 4 bit (Max 200 Segment)
LCD drive output :
4 Common output, 50 Segment output
Integrated Buffer AMP for LCD driving
Integrated Oscillator circuit
No external components
Low power consumption design
Independent power supply for LCD driving
Integrated Electrical volume register (EVR) function
●Key Specifications
■ Supply Voltage Range:
+2.5V to +5.5V
■ LCD drive power supply Range: +2.5V to +5.5V
■ Operating Temperature Range: -40°C to +85°C
■ Max Segments:
200 Segments
■ Display Duty:
1/4
■ Bias:
1/2, 1/3 selectable
■ Interface:
2wire serial interface
●Package
W (Typ.) x D (Typ.) x H (Max.)
●Applications
Telephone
FAX
Portable equipment (POS, ECR, PDA etc.)
DSC
DVC
Car audio
Home electrical appliances
Meter equipment, etc.
VQFP64
12.00mm x 12.00mm x 1.60mm
●Typical Application Circuit
VLCD
VDD
VDD
VLCD
Controller
VDD
SD
SCL
INHb
OSCIN
TEST1
TEST2
TEST3
VSS
COM0
COM1
COM2
COM3
SEG0
SEG1
SEG49
Segment
LCD
Internal oscillator circuit mode
Figure 1. Typical application circuit
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111･14･001
○This product is not designed for protection against radioactive rays.
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TSZ02201-0A0A2D300040-1-2
8.Jan.2013 Rev.002
1 page  
BU9799KV MAX 200 segments (SEG50×COM4)
●Example of recommended circuit
VLCD
VDD
VDD
VLCD
Controller
VDD
SD
SCL
INHb
OSCIN
TEST1
TEST2
TEST3
VSS
COM0
COM1
COM2
COM3
SEG0
SEG1
SEG49
Internal oscillator circuit mode
VLCD VDD
Controller VDD
VDD
VLCD
SD
SCL
INHb
OSCIN
TEST1
TEST3
TEST2
VSS
COM0
COM1
COM2
COM3
SEG0
SEG1
SEG49
Datasheet
Segment
LCD
Segment
LCD
External clock input mode
Figure 6. Example of recommended circuit
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111･15･001
5/24
TSZ02201-0A0A2D300040-1-2
8.Jan.2013 Rev.002
5 Page 
BU9799KV MAX 200 segments (SEG50×COM4)
○Set IC Operation (ICSET)
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
C 1 1 0 1 P2 P1 P0
P2: Define the MSB bit of address of DDRAM. Refer to ADSET command.
Set software reset execution
Setup
P1
No operation
0
Software Reset execute
1
This command will be set initialize condition.
When executed Software reset, P1 and P0 will be ignored.
Set oscillator mode
setup
P0 Reset initialize condition
Internal oscillation
0
○
External clock input
1
Internal oscillation: Must be connected to VSS.
External clock input: Input external clock from OSCIN terminal
Co mm and
OSC IN_E N
(i nte rnal )
I CSE T
Internal OSC mode
External clock mode
Datasheet
INT oscillation
(in terna l)
EXT clock
(OSCIN )
Figure 12. Oscillator mode change timing
○Blink control (BLKCTL)
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
C 1 1 1 0 * P1 P0
Set blink mode
Blink mode (Hz)
OFF
0.5
1
2
P1 P0 Reset initialize condition
00
○
01
10
11
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111･15･001
11/24
TSZ02201-0A0A2D300040-1-2
8.Jan.2013 Rev.002
11 Page | ||
| Páginas | Total 27 Páginas | |
| PDF Descargar | [ Datasheet BU9799KV.PDF ] | |
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