BU97500KV 반도체 회로 부품 판매점
Multifunction LCD Segment Driver
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 ROHM Semiconductor |
Datasheet
Multifunction LCD Segment Driver
BU97500KV MAX 204 segments (SEG51×COM4)
●Features
Integrated RAM for display data (DDRAM):
51 x 4bit (Max 204 Segment)
LCD drive output:
4 Common output, Max 51Segment output
Segment/GPO (Max 4port) output mode selectable
Support standby mode
Integrated Power-on Reset circuit
Integrated Oscillator circuit
No external component
Low power consumption design
Independent power supply for LCD driving
●Applications
Telephone
FAX
Portable equipment (POS, ECR, PDA etc.)
DSC
DVC
Car audio
Home electrical appliance
Meter equipment
etc.
●Key Specifications
■ Supply Voltage Range:
+2.7V to +5.5V
■ LCD drive power supply Range: +4.5V to +5.5V
■ Operating Temperature Range: -40°C to +85°C
■ Max Segments:
204 Segments
■ Display Duty:
1/3, 1/4 selectable
■ Bias:
1/2, 1/3 selectable
■ Interface:
3wire serial interface
●Package
W (Typ.) x D (Typ.) x H (Max.)
VQFP64
12.00mm x 12.00mm x 1.60mm
●Typical Application Circuit
+5V
+5.5V
*1
*1
VDD
VLCD
From
Control
RESB
CSB
SCL
SD
OPEN DO
OSC
COM1
COM2
COM3
P1/S1
P2/S2
(P1)
(P2) (General purpose ports)
(For use control of backlight)
(P4)
P4/S4
S5
S40
COM4/S41
S42
S52
LCD Panel
(Up to 204
Segments)
*1 Insert capacitors between VDD and VSS
C≥0.1uF
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.
1/23
TSZ02201-0A0A2D300050-1-2
8.Jan.2013 Rev.002
BU97500KV MAX 204 segments (SEG51×COM4)
●Block Diagram / Pin Configuration / Pin Description
Datasheet
VLCD
LCD VOLTAGE
GENERATOR
+-
+-
COMMON
DRIVER
OSC
DO
SD
SCL
CSB
VDD
CLOCK
GENERATOR
3-SPI
INTERFACE
P.O.R
RESET
FILTER
SEGMENT DRIVER & LATCH
SHIFT REGISTER
CONTROL
REGISTER
49
S46
S47
S48
S49
S50
S51
S52
OSC
RESB
TEST
CSB
SCL
SD
VLCD
VDD
VSS
64
32
S32
S31
S30
S29
S28
S27
S26
S25
S24
S23
S22
S21
S20
S19
S18
S17
17
Figure 2. Block Diagram
Figure 3. Pin Configuration (TOP VIEW)
Terminal
CSB
Terminal
No.
59
I/O
I
Table 1 Pin Description
Unused case
VDD
Chip select : “L” active
Function
SCL
60 I
VSS
Serial data transfer clock
SD
61 I
VSS
Input serial data
VDD
OSC
VSS
63 -
- Power Supply for the logic
56
I/O
OPEN/VSS
External clock input terminal
Supported Hi-Z input if the internal clock mode.
64 -
- GND
VLCD
62 -
- Power Supply for the LCD driver
COM1 to 3 41 to 43 O
COM4/S41
44 O
S1/P1 to S4/P4 1 to 4
S5 to S40
S42 to S52
5 to 40
45 to 55
O
O
RESB
57 I
DO 58 O
OPEN
OPEN
OPEN
OPEN
VDD
OPEN
COMMON output for LCD driving
COMMON / SEGMENT output for LCD driving
Assigned as SEGMENT output in 1/3Duty mode.
SEGMENT output for LCD driving / General Purpose output
SEGMENT output for LCD driving
Reset Input:
RESB=“L” : Display is disabled
RESB=“H” : Display is controllable
NOTE) 3-SPI is NOT available if RESET is “L”.
Output for manufacturing test:
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111･15･001
2/23
TSZ02201-0A0A2D300050-1-2
8.Jan.2013 Rev.002
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( rohm )
BU97500KV driver
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