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Rohm Semiconductor Electronic Components Datasheet

BU97930MUV Datasheet

Multifunction LCD Segment Driver

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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 structureSilicon monolithic integrated circuit
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product is not designed for protection against radioactive rays.
1/28
TSZ02201-0A0A2D300060-1-2
10.Apr.2015 Rev.004


Rohm Semiconductor Electronic Components Datasheet

BU97930MUV Datasheet

Multifunction LCD Segment Driver

No Preview Available !

BU97930MUV MAX 108 segments (SEG27×COM4)
Block Diagram / Pin Configuration / Pin Description
VLCD
INHb
CLKIN
VDD
VSS
COM0……COM3 SEG0 …...22 SEG23...26
LED
LCD voltage
Generator
common
driver
Segment Segment
driver driver/GPO
LED
driver
VSS
CR Oscillator
(typ=40.96kHz
)
OSC block
LCD
BIAS
SELECTOR
common blink timing
counter generator
GPO
Controlle
r
DDRAM
GPO data latch
PWM
Generator
cdliovicdker
(Div.2)
Power On
Reset
Command
Data register
Decoder
serial inter face
IF FILTER
VSS 40
LED 39
SEG26 38
SEG25 37
SEG24 36
SEG23 35
SEG22 34
SEG21 33
SEG20 32
SEG19 31
CSB
SD
SCL
EXT-PAD
11 COM3
12 SEG0
13 SEG1
14 SEG2
15 SEG3
16 SEG4
17 SEG5
18 SEG6
19 SEG7
20 SEG8
Figure 2. Block Diagram
Figure 3. Pin Configuration (BOTTOM VIEW)
Terminal
CSB
Table 1 Pin Description
Terminal
number
I/O
unused case
1I
- Chip select: "L" active
Function
SCL 2 I - Serial data transfer clock
SD
3I
- Input serial data
VDD
CLKIN
VSS
4-
- Power supply for LOGIC
6
I
OPEN / VSS
External clock input terminal (for display/PWM using selectable);
Support Hi-Z input mode at internal clock mode
40 -
- GND
VLCD
7-
INHb
5I
COM0 to 3 8 to 11 O
-
VDD
OPEN
Power supply for LCD
Display turning on/off select terminal
H: turning on display, L: turning off display
INHb = “L”: All SEG/COM terminals : output VSS level
GPO terminal : output VSS level
LED drive terminal : output Hi-Z
COMMON output for LCD
SEG0 to 22 12 to 34 O
OPEN
SEGMENT output for LCD
SEG23 to 26 35 to 38 O
OPEN
SEGMENT output for LCD/GPO
LED
39
O
OPEN
LED driver output
EXT-PAD
--
VSS
substrate
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
2/28
TSZ02201-0A0A2D300060-1-2
10.Apr.2015 Rev.004


Part Number BU97930MUV
Description Multifunction LCD Segment Driver
Maker ROHM
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