Datasheet
Multifunction LCD Segment Driver
BU97930MUV
MAX 108 segments (SEG27×COM4)
●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.)
●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)
●Applications
Telephone
FAX
Portable equipment (POS, ECR, PDA etc.)
DSC
DVC
Car audio
Home electrical appliance
Meter equipment
etc.
●Typical
Application Circuit
LED/GPO using case
VQFN040V6060
6.00mm x 6.00mm x 1.00mm
VLED=5.0V
VLCD
VDD
LED
*Regarding resistor value
Please detect the value according to
input current value (current MAX = 20mA)
BU97930MUV
5.0V
3.3V
SEG26(GPO1) to
SEG23(GPO4)
Other
device
VSS
CSB
SD
SCL
INHb CLKIN
SEG0 to SEG22
COM0 to COM3
LCD
＊
CLKIN
Input signal from controller
External CLK input terminal
In case being unused, connect to VSS or be opened.
Figure 1.
○Product
structure：Silicon monolithic integrated circuit
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© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111½14½001
Typical application circuit
○This
product is not designed for protection against radioactive rays.
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TSZ02201-0A0A2D300060-1-2
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BU97930MUV
MAX 108 segments (SEG27×COM4)
●Block
Diagram / Pin Configuration / Pin Description
COM0……COM3 SEG0 …...22 SEG23...26
VLCD
LCD voltage
Generator
common
driver
Segment Segment
driver
driver/GPO
LED
CLKIN
COM0
8
COM1
9
LCD
BIAS
SELECTOR
common
counter
blink timing
generator
DDRAM
GPO data latch
GPO
Controlle
r
VSS
LED
SEG26
SEG25
SEG24
SEG23
SEG22
SEG21
SEG20
SEG19
10
LED
driver
40
39
38
37
36
35
34
33
32
31
1
2
3
4
5
6
7
COM2
11
12
13
14
15
VLCD
INHb
VDD
CSB
SCL
SD
COM3
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
PWM
Generator
EXT-PAD
VSS
INHb
CR O
scillator
(typ=40.96kHz
)
CLKIN
clock
divider
Power On
Reset
Command
Data register
Decoder
serial inter face
16
17
18
19
20
(Div.2)
30
29
28
27
26
25
24
23
22
OSC block
VDD
VSS
CSB
SD
SCL
IF FILTER
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
SEG11
SEG10
Figure 2.
Block Diagram
Figure 3.
Pin Configuration (BOTTOM VIEW)
Table 1 Pin Description
Terminal
CSB
SCL
SD
VDD
CLKIN
VSS
VLCD
Terminal
number
1
2
3
4
6
40
7
I/O
I
I
I
-
I
-
-
unused case
-
-
-
-
OPEN / VSS
-
-
Chip select: "L" active
Serial data transfer clock
Input serial data
Power supply for LOGIC
External clock input terminal (for display/PWM using selectable);
Support Hi-Z input mode at internal clock mode
GND
Power supply for LCD
Display turning on/off select terminal
H: turning on display, L: turning off display
INHb
5
I
VDD
INHb = “L”: All SEG/COM terminals : output VSS level
GPO terminal : output VSS level
LED drive terminal : output Hi-Z
COMMON output for LCD
SEGMENT output for LCD
SEGMENT output for LCD/GPO
LED driver output
substrate
Function
COM0 to 3
SEG0 to 22
SEG23 to 26
LED
EXT-PAD
8 to 11
12 to 34
35 to 38
39
-
O
O
O
O
-
OPEN
OPEN
OPEN
OPEN
VSS
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TSZ02201-0A0A2D300060-1-2
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SEG9
21
BU97930MUV
MAX 108 segments (SEG27×COM4)
●Absolute
Maximum Ratings (VSS=0V)
Parameter
Power supply voltage 1
Power supply voltage 2
Power Dissipation
Input voltage range
Operational temperature range
Storage temperature range
Symbol
VDD
VLCD
Pd
VIN
Topr
Tstg
Iout1
Output current
Iout2
Iout3
Iout4
*1
Ratings
-0.3 to +4.5
-0.5 to +7.0
0.8*
1
Unit
V
V
W
V
℃
℃
mA
mA
mA
mA
Remarks
Power supply
Power supply for LCD
-0.5 to VDD+0.5
-40 to +85
-55 to +125
5
5
10
50
SEG output
COM output
GPO output
LED output
When operated higher than Ta=25℃, subtract 8.0mW per degree. (using ROHM standard board)
(board size: 74.2mm×74.2mm×1.6mm
material: FR4 board
copper foil: land pattern only).
●Recommended
Operating Ratings(Ta=-40°C to +85°C,VSS=0V)
Ratings
Parameter
Symbol
MIN
TYP
MAX
Power supply voltage 1
Power supply voltage 2
Output current
VDD
VLCD
Iout4
1.8
2.7
-
-
-
-
3.6
5.5
20
Unit
V
V
mA
Power supply
Remarks
Power supply for LCD
Per LED port 1ch
●Electrical
Characteristics
DC characteristics (Ta=-40°C to +85°C, VDD=1.8V to 3.6V, VLCD=2.7V to 5.5V, VSS=0)
Limit
Parameter
Symbol
Unit
MIN
TYP
MAX
“H” level input voltage
“L” level input voltage
Hysteresis width
“H” level input current
“L” level input current
VIH
VIL
VH
IIH1
IIL1
VOH1
“H” level output voltage
(*2)
VOH2
VOH3
VOL1
“L” level output voltage
(*2)
VOL2
VOL3
VOL4
IstVDD
IstVLCD
IVDD1
Current consumption
(*1)
IVDD2
IVLCD1
IVLCD2
*1 Power save mode 1 and frame inversion setting
Condition
0.8VDD
VSS
-
-
-5
VLCD
-0.4
VLCD
-0.4
VLCD
-0.6
-
-
-
-
-
-
-
-
-
-
-
-
0.2
-
-
-
-
-
-
-
-
0.11
3
0.5
8
30
10
30
VDD
0.2VDD
-
5
-
-
-
-
0.4
0.4
0.5
0.5
10
5
15
45
15
48
V
V
V
µA
µA
V
V
V
V
V
V
V
µA
µA
µA
µA
µA
µA
SD, SCL, CSB, CLKIN, INHb
SD, SCL, CSB, CLKIN, INHb
SCL, INHb, VDD=3.3V, Ta=25°C
SD, SCL, CSB, CLKIN,
INHb, VI=3.6V
SD, SCL, CSB, CLKIN,
INHb, VI=0V
Iload=-50µA, VLCD=5.0V
SEG0 to SEG26
Iload=-50µA, VLCD=5.0V,
COM0 to COM3
Iload=-1mA,VLCD=5.0V,
SEG23 to SEG26(GPO mode)
Iload= 50µA, VLCD=5.0V,
SEG0 to SEG26
Iload= 50µA, VLCD=5.0V,
COM0 to COM3
Iload=1mA, VLCD=5.0V,
SEG23 to SEG26(GPO mode)
Iload=20mA, VLCD=5.0V,
LED
Input terminal ALL‟L‟,
Display off, Oscillation off
Input terminal ALL‟L‟,
Display off, Oscillation off
VDD=3.3V, Ta=25°C, 1/3bias, fFR=64Hz,
PWM generate off, All output pin open
VDD=3.3V, Ta=25°C, 1/3bias, fFR=64Hz,
PWM Frequency=500Hz setting,
All output pin open
VLCD=5.0V, Ta=25°C, 1/3bias, fFR=64Hz,
LED generate off, All output pin open
VLCD=5.0V, Ta=25℃, 1/3bias, fFR=64Hz,
PWM Frequency=500Hz setting,
All output pin open
*2 Iload: In this case, load current from only one port
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TSZ02201-0A0A2D300060-1-2
10.Apr.2015 Rev.004
BU97930MUV
MAX 108 segments (SEG27×COM4)
●Electrical
Characteristics – continued
Oscillation Frequency Characteristics (Ta=-40°C to +85°C, VDD=1.8V to 3.6V, VLCD=2.7V to 5.5V, VSS=0)
Limit
Parameter
Symbol
Unit
Condition
MIN
MIN
MIN
Frame frequency 1
Frame frequency 2
Frame frequency 3
fFR1
fFR2
fFR3
57.6
51.2
45.0
64
64
-
70.4
73.0
64
Hz
Hz
Hz
VDD=3.3V, Ta=25°C, fFR=64Hz setting
VDD=2.5 to 3.6V fFR=64Hz setting
VDD=1.8 to 2.5V fFR=64Hz setting
MPU interface Characteristics (Ta=-40°C to +85°C, VDD=1.8V to 3.6V, VLCD=2.7V to 5.5V, VSS=0)
Limit
Parameter
Symbol
unit
Condition
MIN
TYP
MAX
Input rise time
Input fall time
SCL cycle time
“H” SCL pulse width
“L” SCL pulse width
SD setup time
SD hold time
CSB setup time
CSB hold time
“H” CSB pulse width
tr
tf
tSCYC
tSHW
tSLW
tSDS
tSDH
tCSS
tCSH
tCHW
-
-
250
50
50
50
50
50
50
50
-
-
-
-
-
-
-
-
-
-
50
50
-
-
-
-
-
-
-
-
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
tCHW
CSB
tCSS
tf
tSLW
tSCYC
tr
tCSH
SCL
tSDS
tSHW
tSDH
SD
Figure 4.
Serial interface timing
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TSZ22111½15½001
4/28
TSZ02201-0A0A2D300060-1-2
10.Apr.2015 Rev.004
BU97930MUV
●I/O
equivalent circuit
MAX 108 segments (SEG27×COM4)
VLCD
VDD
VSS
VSS
VDD
VLCD
SEG0-22
COM0-3
CSB, SD,
SCL,INHb
CLKIN
VSS
VSS
VLCD
SEG23-26
LED
VSS
VSS
Figure 5.
I/O equivalent circuit
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TSZ02201-0A0A2D300060-1-2
10.Apr.2015 Rev.004
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