Datasheet
Low Duty LCD Segment Driver
for Automotive Application
BU91600xxx-M Series
General Description
The BU91600FV-M and BU91600FUV-M are a 1/4, 1/3, 1/2duty or Static general-purpose LCD driver that can be used for
automotive applications. BU91600FV-M can drive up to 116 LCD Segments and BU91600FUV-M can drive up to 148 LCD
Segments.
This product can support VA LCD displays, which has better optical performance with higher LCD voltage driving and higher
frame frequency driving.
It can support operating temperature of up to +105°C and is qualified for AEC-Q100 Grade2, as required for automotive
applications.
It can control up to 16 general-purpose outputs / 16 PWM output ports for LED backlighting and LED button illumination
realizing less flicker by various frequency setting function.
It can also support a key scan function that detects a maximum of 20 key inputs to reduce PCB wiring and to minimize
microcontroller size and cost.
It can support LCD contrast adjustment by its EVR function and TTL compatible input interface is also available, these are
well-suited for wide-voltage range of MCUs.
MAX 148 Segments (37SEG x 4COM)
Features
AEC-Q100 Qualified
1/4, 1/3, 1/2duty or Static setting selectable
BU91600FV-M
1/4duty: Max 116 segments,
1/3duty: Max 87 segments
1/2duty: Max 58 segments,
Static: Max 29 segments
BU91600FUV-M
1/4duty: Max 148 segments,
1/3duty: Max 111 segments
1/2duty: Max 74 segments,
Static: Max 37 segments
1/3 or 1/2 bias setting selectable
Support wide range of operation voltage from 2.7V to
6.0V, which can support TN LCD and VA LCD display.
Integrated LCD voltage driving circuit
Integrated oscillation circuit for LCD frame frequency
Line or Frame inversion driving selectable
Max 16ch external PWM outputs
(SEG outputs/general purpose outputs selectable)
Max 6ch internal PWM outputs
(SEG outputs/general purpose outputs/external PWM
outputs selectable)
Support 256 step PWM function to realize backlight/
button LED illumination
Support LCD frame frequency from 50Hz to 685Hz,
total 128setting.
Support PWM frequency from 146Hz to 2.34KHz, total
16setting
Support external PWM input
Support 3 wire serial interface + KEYOUT
Support TTL level input to connect 3.3V MCU directly
Circuit
Support Max 20 key input detection (SEG selectable)
Integrated EVR function to adjust LCD contrast
Integrated voltage detected type power on reset
No external components required
Low power consumption design
(Note)
Key Specifications
■
■
Supply Voltage Range:
+2.7V to +6.0V
Operating Temperature Range:
-40°C to +105°C
Max Segments:
BU91600FV-M
116 Segments
BU91600FUV-M
148 Segments
Display Duty
Static, 1/2, 1/3, 1/4 Selectable
Bias:
1/2, 1/3 Selectable
Interface:
3wire Serial Interface
■
■
■
Special Characteristics
■
■
Electrostatic Discharge Voltage(HBM):
Latch-up Current:
±2000V
±100mA
Applications
■
■
■
■
■
■
■
■
Instrument Clusters
Climate Controls
Car Audios
Car Radios
Metering
White Goods
Healthcare Products
Battery operated products
etc.
Package
W (Typ) x D (Typ) x H (Max)
SSOP-B40
TSSOP-C48V
13.60mm x 7.80mm x 2.00mm 12.50mm x 8.10mm x 1.00mm
(Note)
Grade 2
〇Product
structure : Silicon monolithic integrated circuit
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 14 • 001
〇This
product is not designed protection against radioactive rays.
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TSZ02201-0P4P0D301300-1-2
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BU91600xxx-M Series MAX 148 Segments (37SEG x 4COM)
Absolute Maximum Ratings(VSS = 0.0V)
Parameter
Maximum Supply Voltage
Input Voltage
Symbol
VDD
V
IN1
V
IN2
Pd
Topr
Tstg
Conditions
VDD
SCE, SCL, SDI, INHb, PWMIN
(Note 1)
,
OSCIN
(Note 2)
KI1 to KI4
(Note 3)
BU91600FV-M
BU91600FUV-M
Ratings
-0.3 to +7.0
-0.3 to +7.0
-0.3 to +7.0
0.70
(Note 4)
0.64
(Note 4)
-40 to +105
-55 to +125
Datasheet
Unit
V
V
V
W
W
°C
°C
Allowable Loss
Operating Temperature
Storage Temperature
(Note 1)
In case of External PWM setting.
(Note 2)
In case of External clock mode setting.
(Note 3)
In case of Key scan setting
(Note 4)
Delete by 7.00mW/°C when operating above Ta=25°C (when mounted in ROHM’s standard board
[
BU91600FV-M
]
).
Delete by 6.40mW/°C when operating above Ta=25°C (when mounted in ROHM’s standard board
[
BU91600FUV-M
]
)
Caution:
Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit
between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over the
absolute maximum ratings.
Recommended Operating Conditions (Ta = -40°C to +105°C, VSS = 0.0V)
Parameter
Supply Voltage
Symbol
VDD
Conditions
Min
2.7
Ratings
Typ
5.0
Max
6.0
Unit
V
Electrical Characteristics (Ta = -40°C to +105°C, VDD = 2.7V to 6.0V, VSS = 0.0V)
Parameter
Hysteresis
Symbol
V
H1
V
H2
Power-on Detection
Voltage
“H” Level Input
Voltage
V
DET
V
IH1
V
IH2
“L” Level Input
Voltage
Input Floating Voltage
Pull-down Resistance
Output Off Leakage
Current
“H” Level Input
Current
“L” Level Input
Current
“H” Level
Output Voltage
V
IH3
V
IL1
Pin
SCE, SCL, SDI, INHb,
PWMIN
(Note1)
,OSCIN
(Note 2)
KI1 to KI4
(Note 3)
VDD
SCE, SCL, SDI, INHb,
4.5V ≤ VDD ≤ 6.0V
PWMIN
(Note 1)
,OSCIN
(Note 2)
SCE, SCL, SDI, INHb,
2.7V ≤ VDD < 4.5V
PWMIN
(Note 1)
,OSCIN
(Note 2)
KI1 to KI4
(Note 3)
SCE,SCL,SDI,INHb,
PWMIN
(Note 1)
,OSCIN
(Note 2)
,
KI1 to KI4
(Note 3)
KI1 to KI4
(Note 3)
KI1 to KI4
(Note 3)
VDD=5.0V
SDO
VO=6.0V
SCE, SCL, SDI, INHb,
VI = 5.5V
PWMIN
(Note 1)
,OSCIN
(Note 2)
SCE, SCL, SDI, INHb,
VI = 0V
PWMIN
(Note 1)
,OSCIN
(Note 2)
S1 to S37
IO = -20µA,
VLCD=1.00*VDD
COM1 to COM4
IO = -100µA,
VLCD=1.00*VDD
P1/G1 to P16/G16
(Note 5)
IO = -1mA
KS1 to KS5
(Note 3)
S1 to S37
COM1 to COM4
P1/G1 to P16/G16
(Note 5)
KS1 to KS5
(Note 3)
SDO
IO = -500µA
IO = 20µA
IO = 100µA
IO = 1mA
IO = 25µA
IO = 1mA
Conditions
Min
-
-
1.3
0.4VDD
0.8VDD
0.7VDD
0
-
50
-
-
-5.0
VDD-0.9
VDD-0.9
VDD-0.9
VDD-1.0
-
-
-
0.2
-
Limit
Typ
0.03VDD
0.1VDD
1.8
-
-
-
-
-
100
-
-
-
-
-
-
VDD-0.5
-
-
-
0.5
0.1
Max
-
-
2.2
VDD
VDD
VDD
0.2VDD
0.05VDD
250
6.0
5.0
-
-
-
-
VDD-0.2
0.9
0.9
0.9
1.5
0.5
V
Unit
V
V
V
V
V
V
V
V
kΩ
µA
µA
µA
V
IF
R
PD
I
OFFH
I
IH1
I
IL1
V
OH1
V
OH2
V
OH3
“L” Level
Output Voltage
V
OH4
V
OL1
V
OL2
V
OL3
V
OL4
V
OL5
V
(Note 5)
General –purpose / PWM outputs setting.
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
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TSZ02201-0P4P0D301300-1-2
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