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LC75844M の電気的特性と機能

LC75844MのメーカーはSanyo Semicon Deviceです、この部品の機能は「1/4 Duty General-Purpose LCD Driver」です。


製品の詳細 ( Datasheet PDF )

部品番号 LC75844M
部品説明 1/4 Duty General-Purpose LCD Driver
メーカ Sanyo Semicon Device
ロゴ Sanyo Semicon Device ロゴ 




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LC75844M Datasheet, LC75844M PDF,ピン配置, 機能
Ordering number : ENN6235
CMOS IC
LC75844M
1/4 Duty General-Purpose LCD Driver
Overview
The LC75844M is a 1/4 duty general-purpose LCD driver
that can be used for frequency display in electronic tuners
under the control of a microcontroller. The LC75844M
can drive an LCD with up to 88 segments directly. The
LC75844M can also control up to 4 general-purpose
output ports. Since the LC75844M uses separate power
supply systems for the LCD drive block and the logic
block, the LCD driver block power-supply voltage can be
set to any voltage in the range 2.7 to 6.0 volts, regardless
of the logic block power-supply voltage.
Features
• Support for 1/4 duty 1/2 bias or 1/4 duty 1/3 bias drive
of up to 88 segments under serial data control.
• Serial data input supports CCB format communication
with the system controller.
• Serial data control of the power-saving mode based
backup function and all the segments forced off function
• Serial data control of switching between the segment
output port and the general-purpose output port
functions
• High generality, since display data is displayed directly
without decoder intervention.
• Independent VLCD for the LCD driver block (VLCD can
be set to any voltage in the range 2.7 to 6.0 volts,
regardless of the logic block power-supply voltage.)
• The INH pin can force the display to the off state.
• RC oscillator circuit
Package Dimensions
unit: mm
3204-MFP36S
[LC75844M]
36 19
1 18 0.15
15.3
0.35 0.8 0.85
SANYO: MFP36S
• CCB is a trademark of SANYO ELECTRIC CO., LTD.
• CCB is a SANYO’s original bus format and all the
bus addresses are controlled by SANYO.
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
92299TH (OT) No. 6235-1/14

1 Page





LC75844M pdf, ピン配列
LC75844M
Electrical Characteristics for the Allowable Operating Ranges
Parameter
Hysteresis
Input high level current
Input low level current
Output high level voltage
Output low level voltage
Output middle level voltage*1
Oscillator frequency
Current drain
Symbol
VH
IIH
IIL
VOH 1
VOH 2
VOH 3
VOL 1
VOL 2
VOL 3
VMID 1
VMID 2
VMID 3
VMID 4
VMID 5
fOSC
IDD 1
IDD 2
ILCD 1
ILCD 2
ILCD 3
Conditions
CE, CL, DI, INH
CE, CL, DI, INH; VI = 6.0 V
CE, CL, DI, INH; VI = 0 V
S1 to S22; IO = –20 µA
COM1 to COM4; IO = –100 µA
P1 to P4; IO = –1 mA
S1 to S22; IO = 20 µA
COM1 to COM4; IO = 100 µA
P1 to P4; IO = 1 mA
COM1 to COM4; 1/2 bias,
IO = ±100 µA
S1 to S22; 1/3 bias,
IO = ±20 µA
S1 to S22; 1/3 bias,
IO = ±20 µA
COM1 to COM4; 1/3 bias,
IO = ±100 µA
COM1 to COM4; 1/3 bias,
IO = ±100 µA
OSC; ROSC = 43 k, COSC = 680 pF
VDD; power saving mode
VDD; VDD = 6.0 V, output open, fosc = 50 k Hz
VLCD; power saving mode
VLCD; VLCD = 6.0 V, output open
1/2 bias, fosc = 50 k Hz
VLCD; VLCD = 6.0 V, output open
1/3 bias, fosc = 50 k Hz
min
–5.0
VLCD – 0.9
VLCD – 0.9
VLCD – 0.9
1/2 VLCD – 0.9
2/3 VLCD – 0.9
1/3 VLCD – 0.9
2/3 VLCD – 0.9
1/3 VLCD – 0.9
40
Note: *1 Excluding the bias voltage generation divider resistors built in the VLCD1 and VLCD2. (See Figure 1.)
Ratings
typ
0.1 VDD
max
5.0
0.9
0.9
0.9
1/2 VLCD + 0.9
Unit
V
µA
µA
V
V
V
V
V
V
V
2/3 VLCD + 0.9
V
1/3 VLCD + 0.9
V
2/3 VLCD + 0.9
V
1/3 VLCD + 0.9
V
50 60 kHz
5 µA
230 460 µA
5 µA
100 200 µA
60 120 µA
VLCD
VLCD1
VLCD2
To the common segments drivers
Except these resistors
VSS
Figure 1
A06588
No. 6235-3/14


3Pages


LC75844M 電子部品, 半導体
2. When CL is stopped at the high level
CE
CL
DI 0 0 1 0 0 0 1 0 D1 D2 D3
B0 B1 B2 B3 A0 A1 A2
CCB address
8 bits
A3
LC75844M
D37 D38 D39 D40 D41 D42 D43 D44 0 0 0 0 0 P0 P1 P2 DR SC BU 0
Display data
44 bits
Control data
11 bits
DD
1 bit
0010001
B0 B1 B2 B3 A0 A1 A2
CCB address
8 bits
0 D45 D46 D47
A3
D81 D82 D83 D84 D85 D86 D87 D88 0 0 0 0 0 0 0 0 0 0 0 1
Display data
44 bits
Fixed data
11 bits
DD
1 bit
Note: DD ... Direction data
• CCB address...............44H
• D1 to D88...................Display data
• P0 to P2 ......................Segment output port/general-purpose output port switching control data
• DR ..............................1/2 bias drive or 1/3 bias drive switching control data
• SC...............................Segments on/off control data
• BU ..............................Normal mode/power-saving mode control data
Serial Data Transfer Examples
A12601
• When 45 or more segments are used, all 112 bits of the serial data must be sent.
8 bits
56 bits
00100010
B0 B1 B2 B3 A0 A1 A2 A3
D1 D2 D3
D37 D38 D39 D40 D41 D42 D43 D44 0 0 0 0 0 P0 P1 P2 DR SC BU 0
00100010
B0 B1 B2 B3 A0 A1 A2 A3
D45 D46 D47
D81 D82 D83 D84 D85 D86 D87 D88 0 0 0 0 0 0 0 0 0 0 0 1
A12602
• When fewer than 45 segments are used, only 56 bits of serial data need to be sent. However, the display data D1 to D44
and the control data must be sent.
8 bits
56 bits
00100010
B0 B1 B2 B3 A0 A1 A2 A3
D1 D2 D3
D37 D38 D39 D40 D41 D42 D43 D44 0 0 0 0 0 P0 P1 P2 DR SC BU 0
A12603
Note: When fewer than 45 segments are used, transfers such as that shown in the figure below cannot be used.
8 bits
00100010
B0 B1 B2 B3 A0 A1 A2 A3
D45 D46 D47
56 bits
D81 D82 D83 D84 D85 D86 D87 D88 0 0 0 0 0 0 0 0 0 0 0 1
A12604
No. 6235-6/14

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
LC75844

1/4 Duty General-Purpose LCD Driver

Sanyo Semicon Device
Sanyo Semicon Device
LC75844M

1/4 Duty General-Purpose LCD Driver

Sanyo Semicon Device
Sanyo Semicon Device
LC75844M

1/4-Duty General-Purpose LCD Display Driver

ON Semiconductor
ON Semiconductor


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