LC75844M-E ON Semiconductor, LC75844M-E Datasheet

no-image

LC75844M-E

Manufacturer Part Number
LC75844M-E
Description
LCD Drivers LCD DISPLAY DRIVER
Manufacturer
ON Semiconductor
Datasheet

Specifications of LC75844M-E

Rohs
yes
Maximum Clock Frequency
60 kHz
Operating Supply Voltage
2.7 V to 6 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Package / Case
MFP-36
Maximum Power Dissipation
100 mW
Ordering number : ENN6235
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
• Serial data input supports CCB format communication
• Serial data control of the power-saving mode based
• Serial data control of switching between the segment
• High generality, since display data is displayed directly
• Independent V
• The INH pin can force the display to the off state.
• RC oscillator circuit
of up to 88 segments under serial data control.
with the system controller.
backup function and all the segments forced off function
output port and the general-purpose output port
functions
without decoder intervention.
be set to any voltage in the range 2.7 to 6.0 volts,
regardless of the logic block power-supply voltage.)
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
• CCB is a trademark of SANYO ELECTRIC CO., LTD.
• CCB is a SANYO’s original bus format and all the
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.
bus addresses are controlled by SANYO.
LCD
SANYO Electric Co.,Ltd. Semiconductor Company
for the LCD driver block (V
LCD
can
1/4 Duty General-Purpose LCD Driver
Package Dimensions
unit: mm
3204-MFP36S
1
36
0.35
15.3
[LC75844M]
0.8
18
19
92299TH (OT) No. 6235-1/14
LC75844M
0.85
SANYO: MFP36S
0.15
CMOS IC

Related parts for LC75844M-E

LC75844M-E Summary of contents

Page 1

... Ordering number : ENN6235 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 segments directly. The LC75844M can also control general-purpose output ports. Since the LC75844M uses separate power ...

Page 2

... CE, CL: Figure CE, CL: Figure 2 ch CL: Figure 2 øH t CL: Figure 2 øL t CE, CL, DI: Figure CE, CL, DI: Figure INH, CE: Figure 3 c LC75844M Ratings Unit –0.3 to +7.0 V –0.3 to +7.0 V –0.3 to +7.0 V –0 0 –0 0.3 V LCD –0 0 – ...

Page 3

... MID V MID Oscillator frequency LCD Current drain I LCD I LCD Note: *1 Excluding the bias voltage generation divider resistors built in the V LC75844M Conditions V CE, CL, DI, INH H I CE, CL, DI, INH 6 CE, CL, DI, INH S22 –20 µA ...

Page 4

... When CL is stopped at the high level CE tø tds Block Diagram COMMON DRIVER INH OSC GENERATOR LCD V LCD 1 V LCD LC75844M V IH tøL tf tcp tcs V IH tø 50 tcp tcs tdh Figure 2 SEGMENT DRIVER & LATCH ...

Page 5

... D45 D46 D47 CCB address 8 bits Note: DD ... Direction data LC75844M Function is given by /512) Hz OSC CE: Chip enable CL: Synchronization clock DI: Transfer data Off S1/P1 to S4/P4 = Low (These pins are forcibly set to the segment output port function and fixed at the V level ...

Page 6

... D45 D46 D47 LC75844M D2 D3 D37 D38 D39 D40 D41 D42 D43 D44 0 Display data 44 bits D47 D81 D82 D83 D84 D85 D86 D87 D88 0 Display data 44 bits 56 bits D37 D38 D39 D40 D41 D42 D43 D44 0 ...

Page 7

... Normal mode Power saving mode (The OSC pin oscillator is stopped, and the common and segment output pins go to the V 1 S1/P1 to S4/P4 output pins that are set to be general-purpose output ports by the control data can be used as general- purpose output ports.) LC75844M S3/P3 S4/ ...

Page 8

... LC75844M COM3 COM4 D11 D12 D15 D16 D19 D20 D23 D24 D27 D28 D31 D32 D35 D36 D39 D40 D43 D44 D47 D48 D51 D52 ...

Page 9

... LCD driver output when only LCD segments corresponding to COM4 are on. LCD driver output when LCD segments corresponding to COM2 and COM4 are on. LCD driver output when all LCD segments corresponding to COM1, COM2,COM3, and COM4 are on. LC75844M fosc [Hz] 512 1/4 Duty, 1/2 Bias Waveforms V LCD V LCD 1, V LCD LCD ...

Page 10

... LCD driver output when only LCD segments corresponding to COM4 are on. LCD driver output when LCD segments corresponding to COM2 and COM4 are on. LCD driver output when all LCD segments corresponding to COM1, COM2,COM3, and COM4 are on. LC75844M fosc [Hz] 512 1/4 Duty, 1/3 Bias Waveforms V LCD V LCD 1 V LCD 2 0V ...

Page 11

... Internal data (D45 to D88) Undefined Notes on Controller Transfer of Display Data Since the LC75844M accept display data (D1 to D88) divided into two separate transfer operations, we recommend that applications transfer all of the display data within a period of less than prevent observable degradation of display quality. ...

Page 12

... From the microcontroller Note: *2 When a capacitor except the recommended external capacitance (C connect the OSC pin with a capacitor in the range 220 to 2200pF. LC75844M = 680 pF) is connected the OSC pin, we recommend that applications OSC = 680 pF) is connected the OSC pin, we recommend that applications ...

Page 13

... From the microcontroller Note: *2 When a capacitor except the recommended external capacitance (C connect the OSC pin with a capacitor in the range 220 to 2200pF. LC75844M = 680 pF) is connected the OSC pin, we recommend that applications OSC = 680 pF) is connected the OSC pin, we recommend that applications ...

Page 14

... SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of September, 1999. Specifications and information herein are subject to change without notice. LC75844M PS No. 6235-14/14 ...

Related keywords