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PDF BU97930MUV Data sheet ( Hoja de datos )
| Número de pieza | BU97930MUV | |
| Descripción | Multifunction LCD Segment Driver | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Datasheet
Multifunction LCD Segment Driver
BU97930MUV MAX 108 segments (SEG27×COM4)
●Features
Integrated RAM for display data (DDRAM):
27 x 4 bit (Max 108 Segment)
LCD drive output:
4 Common output, Max 27 Segment output
Integrated 1ch LED driver circuit
Segment /GPO(Max 4port) output mode selectable
Support PWM generation from ext. or internal clock
(Resolution: 8bit)
Support standby mode
Integrated Power-on-Reset circuit (POR)
Integrated Oscillator circuit
No external component
Low power consumption design
Independent power supply for LCD driving
Support Blink function
(Blink frequency 1.6, 2.0, 2.6, 4.0Hz selectable)
●Key Specifications
■ Supply Voltage Range:
+1.8V to +3.6V
■ LCD drive power supply Range: +2.7V to +5.5V
■ Operating Temperature Range: -40°C to +85°C
■ Max Segments:
108 Segments
■ Display Duty:
Static, 1/3, 1/4 selectable
■ Bias:
Static, 1/3
■ Interface:
3wire 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 appliance
Meter equipment
etc.
VQFN040V6060
6.00mm x 6.00mm x 1.00mm
●Typical Application Circuit
LED/GPO using case
VLED=5.0V
5.0V
3.3V
VLCD
VDD
LED
BU97930MUV
*Regarding resistor value
Please detect the value according to
input current value (current MAX = 20mA)
SEG26(GPO1) to
SEG23(GPO4)
Other
device
VSS
CSB SD SCL INHb CLKIN
SEG0 to SEG22
COM0 to COM3
LCD
＊ CLKIN
External CLK input terminal
Input signal from controller In case being unused, connect to VSS or be opened.
Figure 1. Typical application circuit
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
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○This product is not designed for protection against radioactive rays.
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BU97930MUV MAX 108 segments (SEG27×COM4)
●I/O equivalent circuit
VLCD
VSS
VDD
CSB, SD,
SCL,INHb
CLKIN
VSS
VLCD
SEG23-26
VSS
VDD
VSS
VLCD
SEG0-22
COM0-3
VSS
LED
VSS
Figure 5. I/O equivalent circuit
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
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5 Page 
BU97930MUV MAX 108 segments (SEG27×COM4)
●Command Descriptions
D/C, Data / Command judgment bit (MSB)
For more details, please refer to 3wire serial I/F
○Mode Set (MODESET)
1st byte command
2nd byte command
MSB
LSB
D/C D6 D5 D4 D3 D2 D1 D0 Hex
1 0 0 0 0 0 0 1 81h
0 0 0 0 P3 P2 P1 P0 -
Reset
-
00h
Display Set
Condition
P3 Reset state
Display OFF
0○
Display ON
1
Display OFF : No LCD driving mode (Output: VSS Level)
Turn off OSC circuit and LCD power supply circuit. (Synchronized with frame freq)
Display ON : LCD driving mode
Turn on OSC circuit and LCD power supply circuit.
Read data from DDRAM and display to LCD.
LED port and GPO port output states are not affected by a Display on/off state
Output state is determined by command setup (OUTSET GPOSET, PWMSET) and INHb terminal state,
respectively. For more details, please refer to each command description.
LCD drive mode set
Condition
Frame inversion
Line inversion
P2 Reset state
0○
1
Current mode set
Condition
P1 P0 Reset state
Power save mode1
00
○
Power save mode2
01
Normal mode
10
High power mode
11
* Please supply the VLCD voltage larger than 3V at High power mode.
(Reference data of consumption current)
Condition
Current consumption
Power save mode 1
×1.0
Power save mode 2
×1.7
Normal mode
×2.7
High power mode
×5.0
* The value changes according to the panel load.
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111･15･001
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TSZ02201-0A0A2D300060-1-2
10.Apr.2015 Rev.004
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet BU97930MUV.PDF ] | |
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