EMC EPL43102 43 com / 102 seg lcd driver Datasheet

EPL43102
43 Com / 102 Seg
LCD Driver
Product
Specification
DOC. VERSION 1.8
ELAN MICROELECTRONICS CORP.
January 2006
Trademark Acknowledgments:
IBM is a registered trademark and PS/2 is a trademark of IBM
Windows is a trademark of Microsoft Corporation
ELAN and ELAN logo
are trademarks of ELAN Microelectronics Corporation
Copyright © 2006 by ELAN Microelectronics Corporation
All Rights Reserved
Printed in Taiwan
The contents of this specification are subject to change without further notice. ELAN Microelectronics assumes
no responsibility concerning the accuracy, adequacy, or completeness of this specification. ELAN
Microelectronics makes no commitment to update, or to keep current the information and material contained in
this specification. Such information and material may change to conform to each confirmed order.
In no event shall ELAN Microelectronics be made responsible for any claims attributed to errors, omissions, or
other inaccuracies in the information or material contained in this specification. ELAN Microelectronics shall
not be liable for direct, indirect, special incidental, or consequential damages arising from the use of such
information or material.
The software (if any) described in this specification is furnished under a license or nondisclosure agreement, and
may be used or copied only in accordance with the terms of such agreement.
ELAN Microelectronics products are not intended for use in life support appliances, devices, or systems. Use of
ELAN Microelectronics product in such applications is not supported and is prohibited.
NO PART OF THIS SPECIFICATION MAY BE REPRODUCED OR TRANSMITTED IN ANY FORM OR
BY ANY MEANS WITHOUT THE EXPRESSED WRITTEN PERMISSION OF ELAN MICROELECTRONICS.
ELAN MICROELECTRONICS CORPORATION
Headquarters:
Hong Kong:
USA:
No. 12, Innovation Road 1
Hsinchu Science Park
Hsinchu, Taiwan 30077
Tel: +886 3 563-9977
Fax: +886 3 563-9966
http://www.emc.com.tw
Elan (HK) Microelectronics
Corporation, Ltd.
Elan Information
Technology Group (U.S.A.)
Rm. 1005B, 10/F Empire Centre
68 Mody Road, Tsimshatsui
Kowloon , HONG KONG
Tel: +852 2723-3376
Fax: +852 2723-7780
[email protected]
1821 Saratoga Ave., Suite 250
Saratoga, CA 95070
USA
Tel: +1 408 366-8225
Fax: +1 408 366-8220
Europe:
Shenzhen:
Shanghai:
Elan Microelectronics Corp.
(Europe)
Elan Microelectronics
Shenzhen, Ltd.
Elan Microelectronics
Shanghai, Ltd.
Siewerdtstrasse 105
8050 Zurich, SWITZERLAND
Tel: +41 43 299-4060
Fax: +41 43 299-4079
http://www.elan-europe.com
SSMEC Bldg., 3F, Gaoxin S. Ave.
Shenzhen Hi-Tech Industrial Park
Shenzhen, Guandong, CHINA
Tel: +86 755 2601-0565
Fax: +86 755 2601-0500
23/Bldg. #115 Lane 572, Bibo Road
Zhangjiang Hi-Tech Park
Shanghai, CHINA
Tel: +86 21 5080-3866
Fax: +86 21 5080-4600
Contents
Contents
1
2
3
4
General Description .................................................................................................. 1
Features ..................................................................................................................... 1
Applications............................................................................................................... 2
Pin Assignment ......................................................................................................... 2
5
6
4.1 Pad Coordinates..................................................................................................4
Block Diagram ........................................................................................................... 6
Pin Description.......................................................................................................... 7
7
6.1
Power Supply ......................................................................................................7
6.2
LCD Driver Supply...............................................................................................7
6.3
System Control....................................................................................................8
6.4
MPU Interface .....................................................................................................9
6.5 LCD Driver Output.............................................................................................10
Function Description ...............................................................................................11
7.1
System Interface ...............................................................................................11
7.2
MPU Interface ...................................................................................................11
7.2.1
7.2.2
7.3
Data Transfer.....................................................................................................13
7.3.1
7.3.2
7.4
Voltage Converter Circuits.................................................................................24
Voltage Regulator Circuits.................................................................................24
Voltage Follower Circuits...................................................................................26
LCD Display Circuits .........................................................................................27
7.6.1
7.6.2
7.6.3
7.6.4
7.7
Display Data Latch Circuit .................................................................................18
Shift Register Circuit..........................................................................................18
Common Driver Circuit ......................................................................................21
Segment Driver Circuit ......................................................................................21
LCD Driving Waveform......................................................................................22
Internal Power Circuits ......................................................................................23
7.5.1
7.5.2
7.5.3
7.6
Display Data RAM .............................................................................................14
Programmable Duty Ratio.................................................................................16
LCD Driver Circuits............................................................................................18
7.4.1
7.4.2
7.4.3
7.4.4
7.4.5
7.5
Chip Select ........................................................................................................11
Selecting the Interface Type..............................................................................12
Oscillator ...........................................................................................................28
/DOF Pin Description.........................................................................................28
Display Timing Generator Circuit ......................................................................28
Oscillator Frequency .........................................................................................29
Reset Circuit......................................................................................................29
Product Specification (V1.8) 01.20.2006
iii
Contents
8
Instruction Description ........................................................................................... 30
8.1
Read Display Data ............................................................................................31
8.2
Write Display Data.............................................................................................31
8.3
Read Status.......................................................................................................32
8.4
Set Duty Ratio (Two-Byte Instruction) ...............................................................32
8.4.1
8.4.2
8.5
Set Display Clock CL Frequency (Two-Byte Instruction)...................................33
8.5.1
8.5.2
8.6
Set Duty Ratio Mode (First Instruction) .............................................................32
Set Duty Ratio Register (Second Instruction) ...................................................32
Set CL Frequency Select Mode (First Instruction) ............................................33
Set CL Frequency Select Register (Second Instruction) ..................................33
Select LCD Bias (Two-Byte Instruction) ............................................................33
8.6.1
8.6.2
Set the LCD Bias Select Mode (First Instruction) .............................................33
Set the LCD Bias Select Register (Second Instruction)....................................34
8.7
Display On/Off ...................................................................................................34
8.8
Initial Display Line .............................................................................................34
8.9
Electronic Contrast Control Set (Two-Byte instruction) .....................................34
8.9.1
8.9.2
Set Contrast Control Mode (First Instruction) ...................................................35
Set Contrast Control Register (Second Instruction)..........................................35
8.10 Set Page Address..............................................................................................35
8.11 Set Column Address..........................................................................................35
8.12 ADC Select........................................................................................................36
8.13 Inverse Display On/Off ......................................................................................36
8.14 Entire Display On/Off.........................................................................................36
8.15 Set Modify-Read................................................................................................36
8.16 Reset Modify-Read............................................................................................37
8.17 Reset .................................................................................................................37
8.18 SHL Select.........................................................................................................37
8.19 Power Control....................................................................................................38
8.20 Regulator Resistor Select..................................................................................38
8.21 Set Status Indicator (Two-Byte Instruction) .......................................................38
8.21.1 Set Status Indicator Mode (First Instruction) .....................................................38
8.21.2 Set Status Indicator Register (Second Instruction) ...........................................39
8.22 Power Save (Compound Instruction) ................................................................39
8.22.1 Sleep Mode .......................................................................................................39
8.22.2 Standby Mode ...................................................................................................40
9
Application Information .......................................................................................... 41
9.1
Instruction Procedure Examples .......................................................................41
9.1.1
9.2
iv •
Initial Setup........................................................................................................41
Program Examples............................................................................................43
Product Specification (V1.8) 01.20.2006
Contents
10
Electrical Characteristics ....................................................................................... 46
10.1 Absolute Maximum Ratings...............................................................................46
10.2 Recommended Operating Conditions ...............................................................46
10.3 DC Characteristics ............................................................................................47
10.4 AC Characteristics.............................................................................................49
10.5 80-Family MPU Read/Write Timing Characteristics ..........................................50
11
12
13
10.6 68-Family MPU Read/Write Timing Characteristics ..........................................51
Pin Configuration .................................................................................................... 52
MPU Interface .......................................................................................................... 55
Application Circuits ................................................................................................ 57
Product Specification (V1.8) 01.20.2006
v
Contents
Specification Revision History
Doc. Version
Revision Description
0.1
Initial version
11/20/2000
0.2
Added 1/3 and 1/3.5 bias
02/15/2001
0.3
1.
Added one more VDD and VSS pad.
2.
Modified the Pad sequence and configuration.
0.4
0.5
Modified the DC and AC characteristics.
1.
Added pin configuration
2.
Added program example
3.
Modified the DC characteristics
03/02/2001
07/17/2001
07/25/2001
1.1
Modified the operating temperature range from
–30 to 80°C
09/07/2001
1.2
Added COG package
01/06/2003
1.3
Added TEST pin description
04/25/2003
1.4
Modified the reading timing of /WR
08/04/2003
1.5
Adjusted the Data RAM arrangement
12/29/2003
1.6
1.7
1.8
vi •
Date
1.
Modified the table on the relationship between duty
ratio and common output
2.
Modified the A0 voltage level of Display ON/OFF
instruction
1.
Added a Note on the M/S description under System
Control section.
2.
Modified the table for Common and Segment Driver
Circuits.
1.
Modified the COG part no. to EPL43102GH
2.
Modified the TEST pin description
02/27/2004
08/18/2004
01/20/2006
Product Specification (V1.8) 01.20.2006
EPL43102
43 Com / 102 Seg LCD Driver
1
General Description
The EPL43102 is a driver and controller LSI for graphic dot-matrix liquid crystal
display systems. It can be interfaced with the MPU via serial or 8-bit interface. It
contains 43 common and 102 segment driver circuits. With one chip, it is possible to
drive a graphic display system with a maximum of 102 × 43 dots.
2
Features
„
Direct Correspondence between Display Data RAM and LCD Pixel
„
Display Data RAM : 102 × 43 = 4386 bits
„
145 LCD Drivers : 102-seg segment drivers, 42-common drivers and 1-icon
„
Serial Interface (SPI) or 8-Bit Parallel Interface Mode (80-series, 68-series MPU)
„
On-chip oscillator circuit
„
Multi-chip operation (Master, Slave) available
„
Programmable Duty Ratio :
Duty Ratio
Common
Segment
1: 42 (+ ICON)
1: 36 (+ ICON)
1: 32 (+ ICON)
1: 24 (+ ICON)
1: 16 (+ ICON)
1: 8 (+ ICON)
42 (+ ICON)
36 (+ ICON)
32 (+ ICON)
24 (+ ICON)
16 (+ ICON)
8 (+ ICON)
102
102
102
102
102
102
Note: ICON = “0” : Pin disable
ICON = “1” : Pin enable
„
Selectable LCD driving bias level:
1/3, 1/3.5, 1/4, 1/4.5, 1/5, 1/5.5, 1/6, 1/6.5, 1/7, 1/7.5, 1/8 bias
„
Selectable LCD display clock frequency
„
Electronic contrast control functions (64 steps)
„
Built-in Instruction Set: Display data read/write, Display on/off, Inverse display,
Page address set, Common address set, LCD display contrast control, Set Sleep
mode, Standby mode, etc.
„
Operating Voltage range:
Supply voltage: 2.2 to 5.5 V
LCD driving voltage: 4.0 to 15.0 V
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
•1
EPL43102
43 Com / 102 Seg LCD Driver
Package (Ordering information):
Part Number
Package
Description
Package Information
EPL43102H
Bare die
NA
Page 2
EPL43102GH
Gold bumped die
NA
Page 2
Note: The EPL43102 series has the following sub-codes, depending on their shapes.
H: Bare chip (Aluminum pad without bump);
GH: Gold bumped chip
F: COF package;
T: TAB (TCP) package
Example:
EPL43102AGH → EPL43102: Elan number;
A: Package Version;
GH: Gold bumped chip
3
4
Applications
Organizer
Electronic Dictionary
Scientific calculator
Cellular phone
Graphic pager
Handy Terminals (PDA)
Pin Assignment
188
95
180
10
170
20
160
30
150
40
140
50
130
60
120
70
1
110
80
100
90
94
Note: With the Elan logo at the center (as shown in the figure) and DDRAM (black color) on the right side,
Pin 1 is at the bottom left corner.
Figure 4-1 Pin Configuration
2•
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
Item
Pad No.
Chip size
-
Size
X
Y
8440
1790
1~15, 80~94
Pad Pitch
95
95~109,174~188
16~79
85
110~173
1~15, 80~94
Pad Size
(EPL43102H)
Al pad
95~109,174~188
16~79
110~173
1~15, 80~94
Bump Size
(EPL43102GH)
Au pad
95~109,174~188
16~79
110~173
85
150
75
150
82
147
72
147
Die thickness
525 ± 25
Bump Height
All Pad 17 ± 3 (within die)
Minimum Bump Gap
13
Coordinate Origin
Die center
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
Unit
µm
3
EPL43102
43 Com / 102 Seg LCD Driver
4.1 Pad Coordinates
4•
Pad No.
Symbol
X
Y
Pad No.
Symbol
X
Y
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
COM21
COM22
COM23
COM24
COM25
COM26
COM27
COM28
COM29
COM30
COM31
COM32
COM33
COM34
COM35
COM36
COM37
COM38
COM39
COM40
COM41
COMI1
VDD
VDD
C1+
C1C3
C4
C2C2+
VOUT
V0
V1
V2
V3
V4
VR
GND
GND
MS
PS
FR
C86
/DOF
CLS
CL
OSC
FRS
IRS
/RES
-4095.0
-4000.0
-3905.0
-3810.0
-3715.0
-3620.0
-3525.0
-3430.0
-3335.0
-3240.0
-3145.0
-3050.0
-2955.0
-2860.0
-2765.0
-2675.0
-2590.0
-2505.0
-2420.0
-2335.0
-2250.0
-2165.0
-2080.0
-1995.0
-1910.0
-1825.0
-1740.0
-1655.0
-1570.0
-1485.0
-1400.0
-1315.0
-1230.0
-1145.0
-1060.0
-975.0
-890.0
-805.0
-720.0
-635.0
-550.0
-465.0
-380.0
-295.0
-210.0
-125.0
-40.0
45.0
130.0
215.0
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
D7
D6
D5
D4
D3
D2
D1
D0
CS2
/CS1
A0
/WR
/RD
TEST
COM20
COM19
COM18
COM17
COM16
COM15
COM14
COM13
COM12
COM11
COM10
COM9
COM8
COM7
COM6
COM5
COM4
COM3
COM2
COM1
COM0
COMI2
SEG101
SEG100
SEG99
SEG98
SEG97
SEG96
SEG95
SEG94
SEG93
SEG92
SEG91
SEG90
SEG89
SEG88
300.0
385.0
470.0
555.0
640.0
725.0
810.0
895.0
980.0
1065.0
1150.0
1235.0
1320.0
1405.0
1490.0
1575.0
1660.0
1745.0
1830.0
1915.0
2000.0
2085.0
2170.0
2255.0
2340.0
2425.0
2510.0
2595.0
2680.0
2770.0
2865.0
2960.0
3055.0
3150.0
3245.0
3340.0
3435.0
3530.0
3625.0
3720.0
3815.0
3910.0
4005.0
4100.0
4100.0
4005.0
3910.0
3815.0
3720.0
3625.0
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
-742.5
742.5
742.5
742.5
742.5
742.5
742.5
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
Pad No.
Symbol
X
Y
Pad No.
Symbol
X
Y
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
SEG87
SEG86
SEG85
SEG84
SEG83
SEG82
SEG81
SEG80
SEG79
SEG78
SEG77
SEG76
SEG75
SEG74
SEG73
SEG72
SEG71
SEG70
SEG69
SEG68
SEG67
SEG66
SEG65
SEG64
SEG63
SEG62
SEG61
SEG60
SEG59
SEG58
SEG57
SEG56
SEG55
SEG54
SEG53
SEG52
SEG51
SEG57
SEG49
SEG48
SEG47
SEG46
SEG45
SEG44
SEG43
SEG42
SEG41
SEG40
SEG39
SEG38
3530.0
3435.0
3340.0
3245.0
3150.0
3055.0
2960.0
2865.0
2770.0
2680.0
2595.0
2510.0
2425.0
2340.0
2255.0
2170.0
2085.0
2000.0
1915.0
1830.0
1745.0
1660.0
1575.0
1490.0
1405.0
1320.0
1235.0
1150.0
1065.0
980.0
895.0
810.0
725.0
640.0
555.0
470.0
385.0
895.0
215.0
130.0
45.0
-40.0
-125.0
-210.0
-295.0
-380.0
-465.0
-550.0
-635.0
-720.0
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
SEG37
SEG36
SEG35
SEG34
SEG33
SEG32
SEG31
SEG30
SEG29
SEG28
SEG27
SEG26
SEG25
SEG24
SEG23
SEG22
SEG21
SEG20
SEG19
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
SEG11
SEG10
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
SEG0
-805.0
-890.0
-975.0
-1060.0
-1145.0
-1230.0
-1315.0
-1400.0
-1485.0
-1570.0
-1655.0
-1740.0
-1825.0
-1910.0
-1995.0
-2080.0
-2165.0
-2250.0
-2335.0
-2420.0
-2505.0
-2590.0
-2675.0
-2765.0
-2860.0
-2955.0
-3050.0
-3145.0
-3240.0
-3335.0
-3430.0
-3525.0
-3620.0
-3715.0
-3810.0
-3905.0
-4000.0
-4095.0
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
742.5
Note: For PCB layout, the IC substrate must be connected to VSS or floating.
Refer to the relationship between Duty Ratio and Common Output (Section 7.3.2).
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
5
EPL43102
43 Com / 102 Seg LCD Driver
5
Block Diagram
SEG0
V0
V1
V2
V3
V4
VSS
SEG101 COM0
COM41 COMI
SEGMENT DRIVER
CIRCUITS
COMMONDRIVER
CIRCUITS
LATCHCIRCUIT
SHIFT REGISTER
Voltage
Converter
DISPLAY DATARAM
LINE COUNTER
Connect the
capacitor
LOW ADDRESS
DECODER
VOUT
LINE ADDRESS
DECODE
Voltage
Regulator
PAGE ADDRESS
REGISTER
VR
INITIAL DISPLAY LINE
REGISTER
Voltage
Followers
COLUMNADDRESS
DECODER
FR
Display
Timing
Generator
Circuit
COLUMNADDRESS
COUNTER
COLUMNADDRESS
REGISTER
CL
/DOF
FRS
M/S
INSTRUCTION
DECODER
Oscillator
Bus holder
MPUInterface
INSTRUCTION
REGISTER
STATUS
REGISTER
CLS
OSC
I/OBuffer
( Serial / Parallel )
IRS /CS1CS2A0 /RD/WRC86P/S /RES D7 D6 D5 D4 D3 D2 D1 D0
(E) (R/W)
(SDI)(SCK)(SDO)
Figure 5-1 System Block Diagram
6•
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
6
Pin Description
6.1 Power Supply
Name
I/O
VDD
VSS
Power
Power
V0
V1
V2
V3
V4
Description
VDD Power Supply
0V (GND)
LCD driver supply voltages. The voltage applied is determined by the
LCD pixel and is changed by changing the impedance using an
operational amplifier (OPA) for various applications. Voltage levels are
determined based on V0, and must maintain the relative magnitudes
shown below:
V0≧V1≧V2≧V3≧V4≧Vss
When the internal power circuit is active, these voltages are generated
according to the state of the LCD bias. The selection of voltages is
determined by the “LCD bias select” instruction, as shown in the table
below.
Power
LCD Bias
1/8 Bias
V1
(7/8) × V0
V2
(6/8) × V0
V3
(2/8) × V0
V4
(1/8) × V0
1/7.5 Bias
(6.5/7.5) × V0
(5.5/7.5) × V0
(2/7.5) × V0
(1/7.5) × V0
1/7 Bias
(6/7) × V0
(5/7) × V0
(2/7) × V0
(1/7) × V0
1/6.5 Bias
(5.5/6.5) × V0
(4.5/6.5) × V0
(2/6.5) × V0
(1/6.5) × V0
1/6 Bias
(5/6) × V0
(4/6) × V0
(2/6) × V0
(1/6) × V0
1/5.5 Bias
(4.5/5.5) × V0
(3.5/5.5) × V0
(2/5.5) × V0
(1/5.5) × V0
1/5 Bias
(4/5) × V0
(3/5) × V0
(2/5) × V0
(1/5) × V0
1/4.5 Bias
(3.5/4.5) × V0
(2.5/4.5) × V0
(2/4.5) × V0
(1/4.5) × V0
1/4 Bias
(3/4) × V0
(2/4) × V0
(2/4) × V0
(1/4) × V0
1/3.5 Bias
(2.5/3.5) × V0
(1.5/3.5) × V0
(2/3.5) × V0
(1/3.5) × V0
1/3 Bias
(2/3) × V0
(1/3) × V0
(2/3) × V0
(1/3) × V0
6.2 LCD Driver Supply
Name
C1+
C1C2+
C2C3
C4
I/O
Description
O
Boosted capacitor connecting terminals used for voltage booster.
O
Boosted capacitor connecting terminals used for voltage booster.
O
Boosted capacitor connecting terminals used for voltage booster.
VOUT
I/O
Voltage converter output
VR
I
V0 voltage adjustment pin
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
7
EPL43102
43 Com / 102 Seg LCD Driver
6.3
System Control
Name
I/O
Description
Master/slave operation select pin.
- MS = "H": Master operation
- MS = "L": Slave operation
M/S
M/S
I
“H”
“L”
Power supply
CLS
OSC.
“H”
“L”
*
Available
Unavailable
Unavailable
Circuit
Available
Available
Unavailable
CL
FR
FRS
/DOF
O
O
I
O
O
I
O
O
Hi-Z
O
O
I
Note: * : Don’t Care
O : Output
I : Input
P/S
I
FR
I/O
C68
I
/DOF
I/O
Select Interface mode of the MPU.
When PS = "High": Parallel interface mode
When PS = "Low": Serial interface mode
LCD AC signal input/output pin.
When used in master/slave mode (multi-chip), the FR pins must be
connected to each other.
- MS = “H”: Output
- MS = “L”: Input
Select the kind of the MPU to interface.
When C68 = "High": 68-series MPU interface mode
When C68 = "Low": 80-series MPU interface
LCD Display blanking control pin. In multi-chip mode, the /DOF pin must
be connected to each other.
M/S = ”H” (Master) : /DOF is output pin.
→ Display “On” = “H”, Display “Off” = “L”
M/S = ”L” (Slave) : /DOF is input pin.
→ Via external control. Refer to the following table.
Instruction
Display “On”
Display “Off”
CLS
I
/DOF
H
L
On
Off
Off
Off
Internal oscillator circuit enable / disable select pin.
CLS = “H”: Enable Internal oscillator circuit
CLS = “L”: Disable Internal oscillator circuit is
(External display clock input to OSC pin)
Display clock input/output pin.
When the EPL43102 is used in master/slave mode (multi-chip), the CL
pins must be connected to each other.
CL
I/O
M/S
“H”
“L”
8•
CL
Output
Input
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
Name
I/O
OSC
I
FRS
O
IRS
TEST
I
I
Description
When using an external oscillator, input the clock to the OSC pin.
When using an internal oscillator, leave this pin open.
Static driver output pin.
This pin is used in combination with the FR pin.
Internal resistor select pin.
This pin selects the resistors for adjusting V0 voltage level and is
available only in master mode.
- IRS = "H": The internal resistors are used.
- IRS = "L": The external resistors are used. V0 voltage is controlled using
the external divider resistor connect the VR pin.
Test pin. Fixed at VSS.
6.4 MPU Interface
Name
I/O
/RES
I
/CS1, CS2
I
A0
I
/WR (R/W)
I
/RD (E)
I
D0 to D7
I/O
Description
Hardware reset input.
The LSI is reset when this signal is pulled low. (Active low)
These are the chip select signals. The Chip Select of the LSI becomes
active when CS1 is "L" and also CS2 is "H" and allows the input/output of
data or commands.
/CS1
CS2
“L”
“L”
“H”
“H”
“L”
“H”
“L”
“H”
Status
The device is not active. (D7~D0 is Hi-Z)
Data and instruction are available.
The device is not active. (D7~D0 is Hi-Z)
The device is not active. (D7~D0 is Hi-Z)
Used as register selection input.
When A0 = "High", Data register
When A0 = "Low", Instruction register
When C68 = "High" (68-series MPU interfacing), used as
Read (/WR = "High"), Write (/WR = "Low")
When C68 = "Low " (80-series MPU interfacing), used as write enable
input (/WR).
When C68 = "High" (68-series MPU interfacing), used as read/write
enable input (E).
When C68 = "Low " (80-series MPU interfacing), used as read enable
input (/RD).
When serial mode, D6 (SCK) is used as serial clock input pin, D7 (SDI) is
used as serial data input pin, D5 (SDO) is used as serial data output pin
and the others are not used.
When parallel mode, D0 to D7 are used as bidirectional data bus pin.
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
9
EPL43102
43 Com / 102 Seg LCD Driver
6.5 LCD Driver Output
Name
I/O
Description
The LCD common output pins.
Scan Data
COM0 to
COM41
O
COMI
O
FR
COMs Output Voltage
H
H
L
H
L
L
Power Save Mode
Vss
V0
V1
V4
Vss
These are two icon display pins. Both pins output the same signal.
Leave these pins open when they are not used.
The LCD segment output pins.
Display Data
SEG0 to
SEG101
O
H
FR
H
L
L
H
L
Power Save Mode
SEGs Output Voltage
Normal Display Reverse Display
V0
Vss
V2
V3
V2
V3
V0
Vss
Vss
Refer to the Section 7.3.2 on the relationship between Duty Ratio and Common
Output.
10 •
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
7
Function Description
7.1
System Interface
Instruction
Decoder
Instruction
Register
Bus Holder
Status
Register
I/O Buffer
( Serial/Parallel )
MPU Interface
D7 D6 D5 D4 D3 D2
/CS1 CS2 A0 /RD /WR C86 P/S /RES
(E) (R/W)
(SDI)(SCK)(SDO)
D1
D0 BUSY
Figure 7-1 System Interface
7.2 MPU Interface
7.2.1 Chip Select
The EPL43102 has two chip select pins /CS1 and CS2. When /CS1="L" and
CS2=”H”, MPU interface is available. When the chip select pin is inactive (other /CS1
and CS2 condition), D7 to D0 are high impedance (invalid) and input of A0, /RD, or
/WR inputs are not effective. If serial interface is selected, the shift register and
counter are both reset. However, reset is always operated in any conditions of /CS1
and CS2.
P/S
Serial Mode (L)
Parallel mode (H)
Note: “
C68
A0
/WR
/RD
D0~D4
D5
D6
D7
SPI interface ( - )
A0
R/W
−
*
SDO
SCK
SDI
80-series (L)
A0
/WR
/RD
D0~D7
68-series (H)
A0
R/W
E
D0~D7
* ” Don’t care (“High”, “Low” or “Open”)
“−” Indicates that it is fixed to either “High” (VDD) or “Low” (VSS)
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
11
EPL43102
43 Com / 102 Seg LCD Driver
7.2.2 Selecting the Interface Type
The EPL43102 can be operated with serial interface (SPI) and parallel interface (80series or 68-series) as selected by the P/S pin.
7.2.2.1 Serial Interface (SPI)
When serial mode (PS = "L"), D6 (SCK) is used as serial clock input pin, D7 (SDI) is
used as serial data input pin, D5 (SDO) is used as serial data output pin. When the
LSI is active (/CS1=”L”, CS2=”H”), serial data input (D7), serial clock input (D6) and
serial data output (D5) are enabled. The 8-bit shift register and 3-bit counter are reset
to the initial condition when the chip is not selected. The data input/output from
SDI/SDO terminal is MSB first as in the order of D7, D6…D0, and is latched at the
rising edge of the serial clock SCK. Serial input data is display data when A0="H"
and instruction when A0="L". The A0 input is read and identified at the rising edge of
the (8 × n) serial clock pulse. Since the clock signal (D6) is easy to be affected by the
external noise caused by the line length, operation check on the actual machine is
recommended.
/CS1
CS2
SCK
(D6)
SDI
(D7)
SDO
(D5)
D7
D6
D7
D5
D6
D4
D5
D3
D4
D2
D3
D1
D2
D0
D1
D7
D0
D7
A0
Figure 7-2 Serial Interface Signal Chart
12 •
A0
/WR (R/W)
D7 (SDI)
D5 (SDO)
0
0
Instruction Write
Status Read
0
1
Invalid
Status Read
1
0
Display Data Write
Status Read
1
1
Invalid
Display Data Read
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
7.2.2.2 Parallel Interface (8-bit Length)
When the parallel input is selected (PS = ”H”), D0~D7 can be connected directly to
the 80-series or 68-series MPU by setting the C86 pin to high or low.
A0
/RD
/WR
N
D7~D0
D(N)
D(N+1)
D(N+2)
D(N+3)
D(N+4)
D(N+2)
D(N+3)
Writing Timing
A0
/RD
/WR
N
D7~D0
Dummy
D(N)
D(N+1)
Reading Timing
Figure 7-3 Write and Read Timing Diagrams
Common
80-series
68-series
A0
/RD
/WR
R/W
H
H
L
L
L
H
L
H
H
L
H
L
H
L
H
L
Description
Display data read
Display data write
Register status read
Write to the Instruction register
7.3 Data Transfer
The EPL43102 uses a bus holder and an internal data bus for data transfer with
MPU. When writing data from the MPU to the DDRAM, data is automatically
transferred from the bus holder to the DDRAM. When reading data from the DDRAM
to the MPU, data for the initial read cycle is stored in the bus holder (dummy read)
and MPU reads this stored data from the bus holder for the next data read cycle.
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
13
EPL43102
43 Com / 102 Seg LCD Driver
Register
Initial Display Line
D is p la y D a ta R A M
Line Counter
Line Address Decoder
Low Address Decoder
Page Address Register
7.3.1 Display Data RAM
C o lu m n A d d re s s D e c o d e r
C o lu m n A d d r e s s C o u n t e r
C o l u m n A d d r e s s R e g is t e r
Figure 7-4 Display Data RAM Diagram
The display data RAM (DDRAM) stores pixel data for the LCD. It is a 43-row × 102column addressable array. It is possible to access any required bit by specifying the
page address and the column address. The 43 rows are divided into 5 pages of 8
lines, 1 page with 2 lines (D0, D1) and the seventh page with a single line (D0 only).
Each bit in the Display Data RAM corresponds to the each pixel of the LCD panel and
controls the display by applying the following bit data.
When in Normal Display : On = "1" , Off = "0"
When in Inverse Display : On = "0" , Off = "1"
Refer to Section 8.1.3, “Inverse Display On/Off” instruction for more details.
0
0
0
0
0
0
0
0
1
1
1
1
1
0
0
1
0
1
0
1
0
0
1
0
1
0
1
0
0
1
0
1
0
1
0
0
1
0
1
0
1
0
0
0
0
0
0
0
0
Display Data RAM
Normal Display
Inverse Display
Figure 7-5 Display Data RAM, Normal and Inverse Liquid Crystal Display Diagrams
The microprocessor (MPU) can read from and write to the RAM through the I/O
buffer. Since the LCD controller operates independently, data can be written into the
RAM at the same time as data is being displayed without causing the LCD to flicker.
14 •
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
Page Address
P3,P2,P1,P0
0
0
0
0
0
0
0
0
0
1
0
0
1
1
0
0
1
0
1
0
Line
Common
Output
Common
Output
Common
Address
00
COM0
COM0
COM0
COM0
D1
01
COM1
COM1
COM1
COM1
D2
02
COM2
COM2
COM2
COM2
D3
03
COM3
COM3
COM3
COM3
D4
04
COM4
COM4
COM4
COM4
D5
05
COM5
COM5
COM5
COM5
D6
06
COM6
COM6
COM6
COM6
D7
07
COM7
COM7
COM7
COM7
08
COM8
COM8
COM8
COM8
D1
09
COM9
COM9
COM9
COM9
D2
0A
COM10
COM10
COM10
COM10
D3
0B
COM11
COM11
COM11
COM11
D4
0C
COM12
COM12
COM12
COM12
D5
0D
COM13
COM13
COM13
COM13
D6
0E
COM14
COM14
COM14
COM14
D7
0F
COM15
COM15
COM15
COM15
10
COM16
COM16
COM16
D1
11
COM17
COM17
COM17
D2
12
COM18
COM18
COM18
D3
13
COM19
COM19
COM19
D4
14
COM20
COM20
COM20
D5
15
COM21
COM21
COM21
D6
16
COM22
COM22
COM22
D7
17
COM23
COM23
COM23
Data
Column Address
(HEX)
D0
D0
D0
D0
PAGE0
PAGE1
PAGE2
Output
(1/42,1/43) (1/36,1/37) (1/32,1/33) (1/16,1/17)
18
COM24
COM24
COM24
D1
19
COM25
COM25
COM25
D2
1A
COM26
COM26
COM26
D3
1B
COM27
COM27
COM27
D4
1C
COM28
COM28
COM28
D5
1D
COM29
COM29
COM29
D6
1E
COM30
COM30
COM30
D7
1F
COM31
COM31
COM31
D0
PAGE3
PAGE4
20
COM32
COM32
D1
21
COM33
COM33
D2
22
COM34
COM34
D3
23
COM35
COM35
D4
24
COM36
D5
25
COM37
D6
26
COM38
D7
27
COM39
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
Common
Output
15
EPL43102
43 Com / 102 Seg LCD Driver
Page Address
P3,P2,P1,P0
0
1
0
Data
1
Column Address
1
1
0
Common
Output
D0
PAGE5
D0
28
COM40
29
COM41
PAGE6
ADC
=0
Column
Address (HEX) ADC
=1
0
0
6
5
0
1
6
4
0
2
6
3
LCD Output
S
E
G
0
S
E
G
1
S
E
G
2
COMI
6
2
0
3
6
3
0
2
S
E
G
9
8
S
E
G
9
9
-----------------
---------
6
4
0
1
S
E
G
1
0
0
Common
Output
Common
COMI
COMI
Common
Output
(1/42,1/43) (1/36,1/37) (1/32,1/33) (1/16,1/17)
(HEX)
D1
0
Line
Address
Output
COMI
6
5
0
0
S
E
G
1
0
1
7.3.2 Programmable Duty Ratio
The duty ratio is selected by using the “Set Duty Ratio” instruction.
The common output circuits are shown in the following figure. They are separated
into three shift registers and controlled by the "duty ratio register".
COM0
COM20
COM21
COM41
COMI
Common Driver (21)
Common Driver (21)
Common
Driver (1)
21-bit Shift Register
21-bit Shift Register
1-bit Shift
Register
4
Duty Ratio
Register
Figure 7-6 Common Output Circuits
16 •
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
Duty SHL
Common Output Pins (COMxx, refer to the Pad No.)
0
1
0
1
0
1
0
1
0
1
0
1
Line address
COM0 ~ 3
1/9
1/8
1/17
1/16
1/25
1/24
1/33
1/32
1/37
1/36
1/43
1/42
~ 7 ~ 11 ~ 15 ~ 17
~
24 ~ 26 ~ 30 ~ 34 ~ COM38 ~ 41 COMI
CCOM[0..3]
CCOM[7..4]
CCOM[0..7]
CCOM[15..8]
CCOM[0..11]
CCOM[23..12]
CCOM[0..15]
CCOM[31..16]
CCOM[0..17]
CCOM[35..18]
CCOM[4..7]
CCOM[3..0]
CCOM[8..15]
CCOM[7..0]
CCOM[12..23]
CCOM[11..0]
CCOM[16..31]
CCOM[15..0]
CCOM[18..35]
CCOM[17..0]
CCOM[0..41]
CCOM[41..0]
COMI
−
COMI
−
COMI
−
COMI
−
COMI
−
COMI
−
Relationship between Duty Ratio and Common Output
Initial Display Line Register
The initial display line register assigns a DDRAM line address which corresponds to
COM0 by using the “Initial display line set” instruction. It is used not only for normal
display but also for vertical display scrolling and page switching without changing the
contents of the DDRAM. However, the 43rd address for icon display cannot be
assigned for the initial display line address.
Line Counter
The line counter provides a DDRAM line address. It initializes its contents at the
switching of the frame reversal signal (FR), and also counts-up in synchronization
with common timing signal.
Column Address Counter
The column address counter is an 8-bit preset counter which provides a DDRAM
column address, and is independent of the page address register.
It will increment (+1) the column address whenever “display data read” or “display
data write” instructions are issued. However, the incrementing of the column address
is stopped at column address 65H. The count-lock will be released by the “column
address set” instruction again. The counter can invert the correspondence between
the column address and segment driver direction by means of “ADC select”
instruction.
Page Address Register
The page address register provides a DDRAM page address. Page Address 6 is
used for icon display, and only D0 is valid.
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
17
EPL43102
43 Com / 102 Seg LCD Driver
7.4 LCD Driver Circuits
COM0
V0
V1
V2
V3
V4
VSS
COM41 COMI SEG0
SEG101
Common
Driver
Circuits
Segment Driver
Circuits
Shift Register
Latch Circuit
Display
Timing
Generator
Circuit
From the Display Data
RAM
Figure 7-7 LCD Driver Circuits
This driver circuit is configured by 42-common drivers, 102-segment drivers and 1icon-common driver. This LCD panel driver voltage depends on the combination of
display data and FR (internal) signal.
7.4.1 Display Data Latch Circuit
The display data latch circuit is a latch that temporarily stores the display data that is
output to the liquid crystal driver circuit from the display data RAM. “Display on/off”,
“Inverse display on/off” and “Entire display on/off” instructions control only the
contents of this latch circuit, they cannot change the contents of the DDRAM.
7.4.2 Shift Register Circuit
The circuit contains a 42-bit shift register to shift and turn-on data required for the
LCD drive common signals and 1-bit shift register used for icon. The clock of this
shift register is generated by the display clock CL.
18 •
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
Examples of 1/33 and 1/43 Duty (ICON enable) Driving Waveform
1/33 Duty
0
1
2
3
32 0
1
2
31 32 0
1
1/43 Duty
0
1
2
3
42 0
1
2
41 42 0
1
CL
FR
COM0
COM1
COM31
(COM41)
COMI
Figure 7-8 1/33 and 1/43 Duty Driving Waveform
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
19
EPL43102
43 Com / 102 Seg LCD Driver
Examples of 1/32 and 1/42 duty (ICON disable) Driving Waveform
1/32 Duty
0
1
2
3
31 0
1
2
30 31 0
1
1/42 Duty
0
1
2
3
41 0
1
2
40 41 0
1
CL
FR
COM0
COM1
COM30
(COM40)
COM30
(COM41)
Figure 7-9 1/32 and 1/42 Duty Driving Waveform
20 •
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
7.4.3 Common Driver Circuit
The Common driver circuit consists of 43 drive circuits. One of the four LCD driving
level is selected by the combination of FR and data from the shift register.
V0
VCON
VSS
COM0~41,COMI
Shift Data
Scan
Data
V4
VCOFF
V1
H
L
FR
COMs Output
Voltage
H
VSS
L
V0
H
V1
L
V4
Power save mode
FR
VSS
Figure 7-10 Common Driver Circuit
7.4.4 Segment Driver Circuit
The Segment driver circuit consists of 102 driver circuits. One of the four LCD driving
level is selected by the combination of FR and the display data transferred from the
latch circuit.
VSS
VSON
V0
Display Data
FR
SEG0~101
Display Data
V3
H
VSOFF
V2
L
SEGs Output
Voltage
Normal Inverse
Display Display
H
V0
V2
L
VSS
V3
H
V2
V0
L
V3
VSS
Power save mode
VSS
FR
Figure 7-11 Common Driver Circuit
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
21
EPL43102
43 Com / 102 Seg LCD Driver
7.4.5 LCD Driving Waveform
The following illustration is an example of how the common and segment drivers are
attached to an LCD panel.
SEG0
CL
COM0
COM1
FR
V0
V1
COM0
V4
VSS
V0
V1
COM1
V4
VSS
V0
V2
SEG0
V3
VSS
V0
SEG0-COM0
-V0
Figure 7-12 LCD Driver Waveform
22 •
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
7.5 Internal Power Circuits
LCD Driving Voltage
Supply
Voltage
Followers
Voltage
Regulator
VR
IRS
VOUT
Voltage
Converter
Connect the capacitor
Internal Power Circuits
Figure 7-13 Internal Power Circuits
The internal power supply circuits generate the voltage levels necessary to drive
liquid crystal driver circuits with low-power consumption and the fewest components.
There are voltage converter (V/C) circuits, voltage regulator (V/R) circuits, and
voltage follower (V/F) circuits. They are valid only in master operation and controlled
by “Power Control” instruction. For details, refer to Section 8, "Instruction
Description".
User Setup
Power Control
V/C
V/R
V/F
(VC VR VF) Circuits Circuits Circuits
Only the internal
power supply
circuits are used
Only the voltage
Regulator circuits
and voltage
follower circuits
are used
Only the voltage
follower circuits
are used
Only the external
power supply
circuits are used
VOUT
V0
V1~V4
111
On
On
On
Open
Open
Open
011
Off
On
On
External
input
Open
Open
001
Off
Off
On
Open
External
Input
Open
000
Off
Off
Off
Open
External External
Input
Input
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
23
EPL43102
43 Com / 102 Seg LCD Driver
7.5.1 Voltage Converter Circuits
These circuits boost up the electric potential between VDD and VSS to 2, 3, 4, or 5
times towards the positive side and the boosted voltage is outputted from the VOUT
pin. The boosting magnitude of the internal booster circuit is selected by the
capacitor connection (Refer to the Figure below). The internal oscillator is required to
be operating when using this converter, since the divided signal provided from the
oscillator is used for the internal timing of this circuit.
C1+
C1+
C1+
C1+
C1-
C1-
C1-
C1-
OPEN
C3
C3
C3
C3
OPEN
C4
C4
C4
C4
OPEN
OPEN
C2-
C2-
C2-
C2-
C2+
C2+
C2+
C2+
VOUT
VOUT
VOUT
VOUT
2X
3X
4X
5X
Boost Capacitors = 1 uF~4.7 uF
Figure 7-14 Capacitor Connections
7.5.2 Voltage Regulator Circuits
The voltage regulator determines the LCD driving voltage V0, by adjusting resistors,
Ra and Rb, within the range of |V0| < |VOUT|. Since VOUT is the operating voltage
of the operational-amplifier circuits, it is necessary to be applied internally or
externally. For Equation 1, we determine V0 by Ra, Rb and VEV. Ra and Rb are
connected internally or externally by the IRS pin. VEV which is the voltage of the
electronic volume is determined by Equation 2, where the parameter αis the value
selected by instruction, "Set Contrast Control Mode", within the range 0 to 63.
VREF, a constant voltage source is about 2V at TA=25°C.
24 •
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
VOUT
V0
Rb
VEV
VR
(Constant reference voltage
+ electronic volume)
Ra
VSS
Figure 7-15 Resistor Connection
V 0 = (1 +
Rb
) × VEV …………………Equation 1
Ra
VEV = (1 −
(63 − α )
) × VREF ……….Equation 2
252
Register Value
(R2 R1 R0)
1+ (Rb/Ra)
000
3.5
001
4.0
010
4.5
011
5.0
100
5.5
101
6.0
110
6.5
111
7.0
Value
Small
.
.
.
.
.
.
Large
Refer to Section 8.20, “Regulator Resistor Select” instruction for further details.
α
D5
D4
D3
D2
D1
D0
0
1
..
..
62
63
0
0
.
.
1
1
0
0
.
.
1
1
0
0
.
.
1
1
0
0
.
.
1
1
0
0
.
.
1
1
0
1
.
.
0
1
Refer to Section 8.91, “Set Contrast Control Mode” instruction for further details.
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
25
EPL43102
43 Com / 102 Seg LCD Driver
Using Internal Resistors, Ra and Rb (IRS = "H")
When the IRS pin is “H”, resistor Ra is connected internally between VR pin and VSS,
and Rb is connected between V0 and VR. V0 is determined by using the two
instructions, "Regulator Resistor Select" and "Set Reference Voltage".
Using External Resistors, Ra and Rb (IRS = "L")
When IRS pin is “L”, it is necessary to connect the external regulator resistor Ra
between VR and VSS, and Rb between V0 and VR.
For a particular liquid, the optimum VLCD can be calculated for a given multiplex rate.
For a 1/43 duty ratio, the optimum operating voltage of the liquid can be calculated
as:
VLCD =
1 + 43
1 ⎞
⎛
2 × ⎜1 −
⎟
43 ⎠
⎝
× Vth = 5.805 × Vth
where Vth is the threshold voltage of the liquid crystal material used.
7.5.3 Voltage Follower Circuits
FROM VOLTAGE
REGULATOR
V0
V1
0.890xV0
V2
0.880xV0
Total Req = 4M
Switching
Network
0.120xV0
V3
0.110xV0
V4
BYPASS CAPACITOR = 0.47uF~1uF
OP TYPE VOLTAGE FOLLOWER
Figure 7-16 OTP Voltage Follower Circuit
The VLCD voltage (V0) is resistively divided into four voltage levels (V1, V2, V3, V4),
and those output impedance are converted by the voltage follower (OPA) to increase
the drive capability. A total of six levels LCD reference voltage (V0, V1, V2, V3, V4,
VSS) is generated by the voltage follower circuits.
26 •
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
LCD Bias
V1
V2
V3
V4
1/8
1/7.5
1/7
1/6.5
1/6
1/5.5
1/5
1/4.5
1/4
1/3.5
1/3
0.875*V0
0.865*V0
0.855*V0
0.845*V0
0.835*V0
0.820*V0
0.800*V0
0.780*V0
0.750*V0
0.715*V0
0.665*V0
0.750*V0
0.735*V0
0.715*V0
0.690*V0
0.665*V0
0.635*V0
0.600*V0
0.555*V0
0.500*V0
0.430*V0
0.335*V0
0.250*V0
0.265*V0
0.285*V0
0.310*V0
0.335*V0
0.365*V0
0.400*V0
0.445*V0
0.500*V0
0.570*V0
0.665*V0
0.125*V0
0.135*V0
0.145*V0
0.155*V0
0.165*V0
0.180*V0
0.200*V0
0.220*V0
0.250*V0
0.285*V0
0.335*V0
Different duty radio requires different bias level. For optimum bias level, BL can be
calculated from:
BL =
1
Duty ratio + 1
Changing the bias system from the optimum will have a consequence on the contrast
and viewing angle.
The LCD Bias affects the display quality. But for the purpose of reducing the current
consumption, the unsuitable bias may be selected. Hence, the LCD Bias could be
selected by “Select LCD bias” instruction.
7.6 LCD Display Circuits
FR
Display
Timing
Generator
Circuit
CL
/DOF
FRS
M/S
CLS
Oscillator
OSC
Figure 7-17 LCD Display Circuit
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
27
EPL43102
43 Com / 102 Seg LCD Driver
7.6.1 Oscillator
The on-chip RC type oscillator provides the display clock and voltage converter timing
clock. It has low power consumption and its frequency is nearly independent of VDD.
When “M/S=”H” and “CLS”=”H”, the oscillator circuit is enabled. When CLS=”L”,
the oscillator is stopped, and the oscillator clock has to be input to the OSC pin.
The oscillator circuit is available in master mode only. The oscillator signal is divided
and output as display clock at CL pin.
RC Oscillator
To internal circuit
CLS
OSC
Sleep mode
Figure 7-18 RC Oscillator
7.6.2 /DOF Pin Description
The pin is used to control the blinking of the LCD display.
Instruction
M/S= “H”
M/S=”L”
/DOF (Output)
/DOF (Input) =”H”
/DOF (Input) =”L”
Display “ON”
“H”
LCD On
LCD Off
Display “OFF”
“L”
LCD Off
LCD Off
When the “Power Save” Instruction is activated, the /DOF pin is set to low level.
7.6.3 Display Timing Generator Circuit
This circuit generates some signals to be used to display the LCD. When used in
master/slave mode (multi-chip), some pins must be connected to each other. That is
due to synchronization output. The display clock (CL) generated by the oscillation
clock, generates a clock for the line counter and a latch signal for the display data
latch. The line address of the on-chip RAM is generated in synchronization with the
display clock (CL). While the 102-bit display data is latched by the display data latch
circuit in synchronization with the display clock, the display data which is read to the
LCD driver is completely independent from any access to the display data RAM from
the microprocessor.
28 •
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
The display clock generates an LCD frame reversal signal (FR) which enables the
LCD driver to make an AC drive waveform, and also generates an internal common
timing signal and start signal to the common driver. When this EPL43102 is used for
a multi-chip, the slave chip must receive the FR, CL, /DOF signals from the master.
Operation Mode
Master
(M/S=”H”)
Slave
(M/S=”L”)
FR
CL
/DOF
FRS
OSC
Internal oscillator is
enable(CLS=”H”)
Output Output Output Output Open
Internal oscillator is disable
(CLS=”L”)
Output Output Output Output Input
Internal oscillator is disable
(CLS =”L” or “H”)
Input
Input
Input
Hi-Z
Open
Input
Input
Input
Hi-Z
Open
Note: Open means leave this pin open
7.6.4 Oscillator Frequency
The EPL43102 contains an RC oscillator. The frame frequency (fFM) is derived from
the RC circuit’s oscillation frequency (fOSC) by giving it an appropriate value. The
relationship between the oscillation frequency (fOSC), display clock frequency (fCL) and
the frame frequency (fFM) is shown in an equation below.
The fOSC could be selected from an internal or external oscillator via the CLS pin, the
fCL could be selected using the “Set display clock CL frequency” instruction, and
frame frequency could be calculated using the following equation.
fCL = (Duty ratio) × (Frame frequency)
7.7 Reset Circuit
When the /RES input comes to the “L” level, these LSI return to their default state.
Their default states are as follows:
1.
Display OFF
2.
Normal display
3.
ADC select: Normal (ADC select instruction D0 = “L”)
4.
SHL select: Normal (SHL select instruction D3 = “L”)
5.
Power control register: (D2, D1, D0) = (0, 0, 0)
6.
Serial interface internal register data clear
7.
Duty ratio = 1/43
8.
CL frequency Register (D4, D3, D2, D1,D0) = (0, 0, 0, 0, 1, 1)
9.
LCD power supply bias level = (1/8)
10.
Entire display OFF (Entire display instruction D0 = “L”)
11.
Power saving clear
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
29
EPL43102
43 Com / 102 Seg LCD Driver
12.
Modify-Read OFF
13.
Static indicator OFF
Static indicator register: (D1, D2) = (0, 0)
14.
Display initial line set to the first line: 0
15.
Column address set to Address: 0
16.
Page address set to Page: 0
17.
V0 voltage regulator internal resistor ratio set mode clear: (R2, R1, R0) = (0, 0, 0)
18.
Contrast control set mode clear
Contrast control register: (D5, D4, D3, D2, D1, D0) = (1, 0, 0, 0, 0, 0)
8
Instruction Description
Instruction
A0 /RD /WR D7 D6 D5 D4 D3 D2 D1 D0
Read Display Data
Write Display Data
Read Status
Set Duty Ratio Mode
Duty Ratio Register
Set CL frequency
Mode
CL frequency
Register
Set LCD Bias select
Mode
LCD Bias select
Register
1
1
0
0
0
0
1
0
1
1
1
0
1
0
0
0
1
0
Description
1
*
Read Data
Write Data
Status
0
0
0
0
0
0
0
0
1
0
0
*
*
* ICON D2 D1 D0
Read data from DDRAM
Write data into DDRAM
Read the internal status
Set duty ratio Mode
Select the duty ratio
0
1
0
0
0
0
Set CL frequency Mode
1
0
*
*
*
D4
D3
0
1
0
1
0
0
0
0
0
1
0
*
*
*
*
D3
Display On/Off
0
1
0
1
0
1
0
1
Initial Display Line
Set Contrast Control
Mode
Set Contrast Control
Register
Set Page Address
Set Column Address
MSB
Set Column Address
LSB
0
1
0
0
1
0
1
0
1
0
0
1
0
*
*
0
1
0
1
0
1
1
0
1
0
0
0
0
1
0
1
0
0
0
0
0
0
1
0
1
0
1
0
0
0
0
0
1
0
1
0
1
0
0
1
1
ADC Select
Inverse Display
ON/OFF
30 •
D5 D4
0
0
D5 D4
D3
0
D3
0
1
0
D2 D1 D0
1
0
1
D2 D1 D0
Set CL frequency Register
Set LCD Bias select Mode
Select the LCD Bias
Turn on/off LCD panel
1 Don When DON=0: display off
When DON=1: display on
D2 D1 D0 Specify DDRAM line for COM0
1
0
0
1
D2 D1 D0
Set Contrast Control Mode
Set Contrast Control Register
Page Address
Higher order
Column Add.
Lower order
column Add.
Set page address
DDRAM column address of the
Higher 4 bits
DDRAM column address of the
lower 4 bits
Select segment direction
When ADC=0: normal direction
ADC (SEG0 → SEG101)
When ADC=1: reverse direction
(SEG101 → SEG0)
Select normal/inverse display
REV 0: Normal display
1: Inverse display on
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
Instruction
A0 /RD /WR D7 D6 D5 D4 D3 D2 D1 D0
Description
Select normal/entire display ON
Entire Display
ON/OFF
0
1
0
1
0
1
0
Set Modify-read
Reset Modify-read
Reset
0
0
0
1
1
1
0
0
0
1
1
1
1
1
1
1
1
1
0
0
0
SHL Select
0
1
0
1
1
0
0
Power Control
Regulator Resistor
Select
0
1
0
0
0
1
0
0
0
0
0
0
1
0
Set Static Indicator
Mode
0
1
0
1
0
1
0
Set Static Indicator
Register
0
1
0
*
*
*
Power Save
-
-
-
-
-
-
0
1
0
EON When EON=0: normal display.
When EON=1: entire display ON
Set modify-read mode
Release modify-read mode
Initialize the internal functions
Select COM output direction
When SHL=0: normal direction
SHL
*
*
* (COM0 → COM41)
When SHL=1: reverse direction
(COM41 → COM0)
1 VC VR VF Control power circuit operation
Select internal resistance ratio of
0 R2 R1 R0
the regulator resistor
Set static indicator mode
1
1
0 SM When SM = 0: off
When SM = 1: on
0
1
0
0
1
0
0
1
1
0
0
0
*
*
*
S1
S0
-
-
-
-
-
Set static indicator register
Compound instruction of display
OFF and entire display ON
Note: * Don’t care
8.1 Read Display Data
The 8-bit data from the display data RAM specified by the column address and page
address can be read by this instruction. As the column address is automatically
incremented by 1 after each instruction execution, the microprocessor can
continuously read data from the addressed page.
A0
/RD
/WR
1
0
1
D7
D6
D5
D4
D3
D2
D1
D0
Read Data
8.2 Write Display Data
The 8-bit display data from the microprocessor can be written to the RAM location
specified by the column address and page address. After writing the display data, the
column address is automatically incremented so that the microprocessor can
continuously write data to the addressed page.
A0
/RD
/WR
1
1
0
D7
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
D6
D5
D4
D3
D2
D1
D0
Write Data
31
EPL43102
43 Com / 102 Seg LCD Driver
8.3 Read Status
This instruction reads out the internal status of the “ADC select”, “Display on/off” and
“Reset”.
A0
/RD
/WR
D7
D6
D5
0
0
1
-
ADC
D4
D3
D2
D1
D0
0
0
0
0
On/Off RESET
Flag
Description
It shows the correspondence between the column address and segment
drivers.
ADC = 0 : Reverse direction (SEG101 → SEG0)
ADC = 1 : Normal direction (SEG0 → SEG101)
This bit indicates the ON/OFF state of the display.
0: Display ON
1: Display OFF
Indicates the initialization in progress by RESETB signal.
RESET = 0 : Normal display operation state
RESET = 1 : Internal reset operation state with reset command.
ADC
On/Off
RESET
8.4 Set Duty Ratio (Two-Byte Instruction)
This consists of 2-byte instruction. The first instruction sets the duty ratio mode, the
second instruction updates the contents of the duty ratio register. After the second
instruction, the set duty mode is released. The LSI cannot accept any instructions
except for the “Set duty ratio register” during the set duty ratio mode.
8.4.1 Set Duty Ratio Mode (First Instruction)
A0
/RD
/WR
D7
D6
D5
D4
D3
D2
D1
D0
0
1
0
1
0
0
0
0
1
0
0
8.4.2 Set Duty Ratio Register (Second Instruction)
A0
0
/RD /WR
1
0
D7
D6
D5
D4
D3
D2
D1
D0
Duty Ratio
*
*
*
*
ICON
0
0
0
0
1
1
0
0
1
1
0
0
0
1
0
1
0
1
8 (+ICON)
16 (+ICON)
24 (+ICON)
32 (+ICON)
36 (+ICON)
42 (+ICON)
ICON : “0” Disable COMI (icon display) pin
ICON : “1” Enable COMI (icon display) pin
32 •
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
8.5
Set Display Clock CL Frequency (Two-Byte Instruction)
The display clock CL affects the current consumption and the frame frequency affects
the flicker, so fine adjustments are required for the display clock CL and the frame
frequency.
8.5.1 Set CL Frequency Select Mode (First Instruction)
A0
/RD
/WR
D7
D6
D5
D4
D3
D2
D1
D0
0
1
0
1
0
0
0
0
0
1
0
8.5.2 Set CL Frequency Select Register (Second Instruction)
A0
0
/RD /WR
1
0
D7
D6
D5
D4
D3
D2
D1
D0
CL Frquency
*
*
*
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
*
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
*
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
*
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
*
fOSC
fOSC / 2
fOSC / 3
fOSC / 4
fOSC / 5
fOSC / 6
fOSC / 7
fOSC / 8
fOSC / 9
fOSC / 10
fOSC / 11
fOSC / 12
fOSC / 13
fOSC / 14
fOSC / 15
fOSC / 16
fOSC / 32
8.6 Select LCD Bias (Two-Byte Instruction)
This instruction selects the LCD bias ratio of the voltage required for driving the LCD.
8.6.1 Set the LCD Bias Select Mode (First Instruction)
A0
/RD
/WR
D7
D6
D5
D4
D3
D2
D1
D0
0
1
0
1
0
0
0
0
1
0
1
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
33
EPL43102
43 Com / 102 Seg LCD Driver
8.6.2 Set the LCD Bias Select Register (Second Instruction)
A0
0
/RD /WR
1
D7
D6
D5
D4
D3
D2
D1
D0
LCD Bias
*
*
*
*
0
0
0
0
0
0
0
0
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1/3
1/3.5
1/4
1/4.5
1/5
1/5.5
1/6
1/6.5
1/7
1/7.5
1/8
0
8.7 Display On/Off
This instruction is used to control the turning on or off of the LCD panel regardless of
the contents of the DDRAM.
A0
0
/RD /WR
1
0
D7
D6
D5
D4
D3
D2
D1
D0
Display On or Off
1
0
1
0
1
1
1
0
1
0 :Off
1 :On
8.8 Initial Display Line
This instruction sets the line address of the display RAM to determine the initial
display line. The initial display line corresponds to COM0. The display area read
from the display data RAM corresponds to the number of lines set by the Duty select
command.
A0
0
/RD /WR
1
0
D7
D6
D5
D4
D3
D2
D1
D0
Line Address for COM0
0
1
0
0
.
.
1
1
0
0
.
.
0
0
0
0
.
.
1
1
0
0
.
.
0
0
0
0
.
.
0
0
0
1
.
.
0
1
0
1
.
.
40
41
8.9 Electronic Contrast Control Set (Two-Byte instruction)
This consists of 2-byte instruction. The first instruction sets contrast control mode,
the second instruction updates the contents of the contrast control register. After
second instruction, the contrast control mode is released. The LSI cannot accept any
instructions except for the “Set Contrast Control Register” during the Contrast Control
Mode.
34 •
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
8.9.1 Set Contrast Control Mode (First Instruction)
A0
/RD
/WR
D7
D6
D5
D4
D3
D2
D1
D0
0
1
0
1
0
0
0
0
0
0
1
8.9.2 Set Contrast Control Register (Second Instruction)
A0
0
/RD /WR D7
1
0
*
D6
D5
D4
D3
D2
D1
D0
Electronic Volume Value (α)
*
0
0
.
.
1
1
0
0
.
.
1
1
0
0
.
.
1
1
0
0
.
.
1
1
0
0
.
.
1
1
0
1
.
.
0
1
0 Minimum
1
.
.
62
63
8.10 Set Page Address
This instruction sets the page address of the display data RAM from the
microprocessor into the page address register. It is possible to access any required
bit in the display data RAM by specifying the page address and the column address.
Along with the column address, the page address defines the address of the display
RAM used to write or read the display data. Changing the page address does not
affect the display status. Page 8 is assigned for the icon display. Only D0 is valid.
A0
0
/RD /WR
1
0
D7
D6
D5
D4
D3
D2
D1
D0
Page Address
1
0
1
1
0
0
.
.
0
0
0
.
.
1
0
0
.
.
1
0
1
.
.
0
0
1
.
.
6
8.11 Set Column Address
This instruction sets the column address of the display data RAM from the
microprocessor into the column address register. When accessing the display data
RAM from the MPU, the column address is incremented. The incrementing of the
column address is stopped at address 65H.
A0
0
/RD /WR
1
D7
D6
D5
D4
D3
D2
D1
D0
Column Address Setting
0
0
0
1
0
A7
A3
A6
A2
A5
A1
A4
A0
Upper 4-bit
Lower 4-bit
0
A7
A6
A5
A4
A3
A2
A1
A0
Column Address
0
0
.
.
0
0
0
0
.
.
1
1
0
0
.
.
1
1
0
0
.
.
0
0
0
0
.
.
0
0
0
0
.
.
1
1
0
0
.
.
0
0
0
1
.
.
0
1
0
1
.
.
100
101
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
35
EPL43102
43 Com / 102 Seg LCD Driver
8.12 ADC Select
This instruction selects the segment driver direction. Normal or reverse can be
selected in the correlation between the display data RAM column address and the
segment output terminal.
A0
0
/RD /WR
1
0
D7
D6
D5
D4
D3
D2
D1
D0
Segment Driver Direction
1
0
1
0
0
0
0
0
1
Normal
Reverse
D0 = 0 Normal
Column addresses 00H to 65H correspond to segment outputs
0 to 101.
D0 = 1 Reverse
Column addresses 00H to 65H correspond to segment outputs
101 to 0.
8.13 Inverse Display On/Off
This instruction is used to invert the display status of the LCD panel without rewriting
the contents of the display data RAM.
A0
0
/RD /WR
1
0
D7
D6
D5
D4
D3
D2
D1
D0
Display Status
1
0
1
0
0
1
1
0
1
Normal
Inverse
D0 = 0 Normal
Display data “1” turns the LCD on.
D0 = 1 Inverse
Display data “0” turns the LCD on.
8.14 Entire Display On/Off
This instruction forces the whole LCD points to be turned on regardless of the
contents of the display data RAM. At this time, the contents of the display data RAM
will be retained. This instruction has priority over the Reverse Display On/Off
instruction.
A0
0
/RD /WR
1
0
D7
D6
D5
D4
D3
D2
D1
D0
1
0
1
0
0
1
0
0
1
Entire Display On/Off
Normal
Entire display on
8.15 Set Modify-Read
This instruction stops the automatic increment of the column address by the Read
Display Data instruction, but the column address is still incremented by the Write
Display Data instruction. This instruction can reduce the load of the MPU. During the
display, the data in a specific DDRAM area is repeatedly changed for cursor blinking
or other functions. This mode is canceled by the Reset Modify-read instruction.
36 •
A0
/RD
/WR
D7
D6
D5
D4
D3
D2
D1
D0
0
1
0
1
1
1
0
0
0
0
0
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
8.16 Reset Modify-Read
This instruction cancels the Modify-read mode. The column address of the display
data RAM returns to the address before the Read Modify Write is executed.
A0
/RD
/WR
D7
D6
D5
D4
D3
D2
D1
D0
0
1
0
1
1
1
0
1
1
1
0
8.17 Reset
This instruction resets the initial display line, column address, page address, and the
common output status is reset to their initial status, but does not affect the contents of
display data RAM. This instruction cannot initialize the LCD power supply, which is
initialized by the /RES pin.
A0
/RD
/WR
D7
D6
D5
D4
D3
D2
D1
D0
0
1
0
1
1
1
0
0
0
1
0
Reset status by “Reset” instruction:
1. Read modify write off
2. Static indicator off and static indicator register: (S1, S0) = (0, 0)
3. Initial display line address: (00)H
4. Column address: (00)H
5. Page address: (0) page
6. SHL select: Normal mode (D3 = 0)
7. Regulator resistor select register: (R2, R1, R0) = (0, 0, 0)
8. Sets contrast control set mode off and contrast control register: (20)H
8.18 SHL Select
The COM output scanning direction is selected by this instruction which determines
the LCD driver output status.
A0
0
/RD /WR
1
D7
D6
D5
D4
D3
D2
D1
D0
Common Driver Direction
1
1
0
0
0
1
*
*
*
Normal
Reverse
0
Note: * Don’t care
D3 = 0 Normal
Normal direction (COM0 → COM 41)
D3 = 1 Reverse
Reverse direction (COM41 → COM 0)
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
37
EPL43102
43 Com / 102 Seg LCD Driver
8.19 Power Control
This instruction is used to select one of the eight power circuit functions by using the
3-bit register. An external power supply and part of the internal power supply
functions can be used simultaneously.
A0
/RD
/WR
D7
D6
D5
D4
D3
D2
D1
D0
0
1
0
0
0
1
0
1
VC
VR
VF
VC: Voltage converter
0: Off
1: On
VR: Voltage regulator
VF: Voltage follower
8.20 Regulator Resistor Select
This selects the resistance ratio of the internal resistor used in the internal voltage
regulator. See voltage regulator section in power supply circuit for more details.
A0
/RD
/WR
D7
D6
D5
D4
D3
D2
D1
D0
0
1
0
0
0
1
0
0
R2
R1
R0
R2
R1
R0
[Rb/Ra] Ratio
0
0
0
Small
0
0
1
…
..
..
..
..
1
1
0
..
1
1
1
Large
8.21 Set Status Indicator (Two-Byte Instruction)
This consists of two bytes instruction. The first byte instruction (Set Static Indicator
Mode) enables the second byte instruction (Set Static Indicator Register) to be valid.
The first byte sets the static indicator on/off. When it is on, the second byte updates
the contents of static indicator register without issuing any other instruction and this
status indicator state is released after setting the data of the indicator register.
8.21.1 Set Status Indicator Mode (First Instruction)
A0
0
38 •
/RD /WR
1
0
D7
D6
D5
D4
D3
D2
D1
D0
Static Indicator
1
0
1
0
1
1
0
0
1
Off
On
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
8.21.2 Set Status Indicator Register (Second Instruction)
A0
0
/RD /WR
1
0
D7
D6
D5
D4
D3
D2
D1
D0
Status
*
*
*
*
*
*
0
0
Off
0
1
On (Blink at 4-frame intervals)
1
0
On (Blink at 2-frame intervals)
1
1
On (Turn on at all time)
8.22 Power Save (Compound Instruction)
Static indicator OFF
Static indicator ON
Power saver (compound command)
[ Display OFF ]
[ Entire Display ON ]
Static Indicator ON
Sleep mode
Standby mode
Reset instruction
Power Save OFF ( Compound
Instruction )
[ Entire Display OFF ]
[ Display ON ]
[ Static Indicator ON ]
Power Save OFF ( Compound
Instruction )
[ Entire Display OFF ]
[ Display ON ]
Cancel Sleep mode
Cancel Standby mode
The current consumption can be greatly reduced by entering the power save status
and by inputting the “Entire Display ON” instruction while the display is in OFF mode.
According to the status in static indicator mode, power save is entered through one of
two modes (sleep and standby mode). When Static Indicator mode is ON, standby
mode is issued, when OFF, sleep mode is issued. Power Save mode is released by
the “Display ON” & “Entire Display OFF” instruction.
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
39
EPL43102
43 Com / 102 Seg LCD Driver
8.22.1 Sleep Mode
This stops all operations in the LCD display system, and as long as there are no
accesses from the MPU, the consumption current is reduced to a value near the
static current. The internal modes during sleep mode are as follows:
1. The oscillator circuit and the LCD power supply circuit are stopped.
2. All liquid crystal drive circuits are stopped, and the segment and common driver
output VSS level.
When a “static indicator on” instruction is issued in sleep mode, the LSI goes into a
standby mode.
8.22.2 Standby Mode
All operations of the dynamic LCD display section are stopped, only the static display
circuits for the indicators operate and hence the current consumption will be the
minimum necessary for static drive. The internal conditions in the standby state are
as follows:
1. The power supply circuit for LCD drive is stopped. The oscillator circuit will be
operating.
2. The LCD drive circuits for dynamic display are stopped and the segment and
common driver outputs will be at the VSS level. The static display section will be
operating.
When a reset instruction is issued in the standby mode, the LSI goes into the sleep
mode.
40 •
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
9
Application Information
9.1 Instruction Procedure Examples
9.1.1 Initial Setup
(From power application to display ON using internal power supply circuits)
V D D -V S S P o w e r O N
P o w er
s ta b iliz a tio n
In p u t R e s e t S ig n a l
W a it fo r m o r e th a n 2 0 m s
In itia l s e ttin g s s ta te (d e fa u lt)
U s e r s e ttin g s v ia in s tr u c tio n in p u t (1 )
D U T Y s e le c t
L C D b ia s s e le c t
C L fr e q u e n c y s e le c t
A D C s e le c t
S H L s e le c t
U s e r s e ttin g s v ia c o m m a n d in p u t (2 )
R e g u la to r r e s is to r s e le c t
C o n tr a s t c o n tr o l v o lu m e
U s e r s e ttin g s v ia c o m m a n d in p u t (3 )
P o w e r c o n tro l
V C ,V R ,V F = (1 ,1 ,1 )
W a itin g fo r m o r e th a n 3 0 0 m s to s ta b iliz e
p o w e r le v e ls
th e L C D
E n d o f in itia l s e ttin g s
L C D d is p la y s c r e e n s e ttin g s
D is p la y s ta r t lin e s e t
W r itin g s c r e e n d a ta , e tc .
D is p la y O N
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
41
EPL43102
43 Com / 102 Seg LCD Driver
“Modify-read” Sequence
Set Page Address
Set Column Address
Set modify-read
Dummy read
Data read
Data write
NO
Change complete
YES
End
External Oscillator Input” Sequence
Set CL frequency select mode
Set CL frequency select register
Input the clock to OSC pin
End
42 •
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
9.2 Program Examples
Use Elan RISC II MCU assembly
;*****************************************************************************
;
Initialization Setting Example of EPL43102
;*****************************************************************************
INI_DRIVER_IC:
MOV
A,#LCD_COM_RESET
;INITIAL SETTINGS STATE (DEFAULT)
CALL
WRITE_LCD_1BYTE
MOV
A,#LCD_COM_DUTY
CALL
WRITE_LCD_1BYTE
MOV
A,#DUTY_SET
CALL
WRITE_LCD_1BYTE
MOV
A,#LCD_COM_BIAS
CALL
WRITE_LCD_1BYTE
MOV
A,BIAS_SET
CALL
WRITE_LCD_1BYTE
MOV
A,#LCD_COM_FREQ
CALL
WRITE_LCD_1BYTE
MOV
A,#CL_FREQ
CALL
WRITE_LCD_1BYTE
MOV
A,#LCD_ADC_SET
CALL
WRITE_LCD_1BYTE
MOV
A,#LCD_SHL_SET
CALL
WRITE_LCD_1BYTE
MOV
A,#LCD_REGULATOR_RES_SET
CALL
WRITE_LCD_1BYTE
MOV
A,#LCD_COM_CONTRAST
CALL
WRITE_LCD_1BYTE
MOV
A,#CONTRAST_SET
CALL
WRITE_LCD_1BYTE
MOV
A,#LCD_POWER_CONTROL_SET
CALL
WRITE_LCD_1BYTE
BS
REG_CPUCON,F_CKS
;ADD CLOCK BY OSC PIN (CLOCK FROM CPU)
MOV
A,#150
;WAIT TO STABILIZE THE LCD POWER
CALL
WAIT_A_MS
CALL
LCD_DISPLAY_ON
;TURN ON LCD
MOV
A,#LCD_DISPLAY_INI_LINE
;SET INITIAL DISPLAY LINE
CALL
WRITE_LCD_1BYTE
CALL
LCD_DATA_WRITE
;SET DUTY 1ST INSTRUCTION
;SET DUTY 2ND INSTRUCTION
;SET LCD BIAS 1ST INSTRUCTION
;SET BIAS 2ND INSTRUCTION
;SET LCD CL FREQUENCY 1ST INSTRUCTION
;SET CL FREQUENCE 2ND INSTRUCTION
;SET ADC FUNCTION SELECT
;SET SHL FUNCTION SELECT
;SET REGULATOR RESISTOR 1+(Rb/Ra)
;SET CONTRAST 1ST INSTRUCTION
;SET CONTRAST 2ND INSTRUCTION
;SET POWER CONTROL (INTERNAL OR EXTERNAL)
;WRITING SCREEN DATA
RET
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
43
EPL43102
43 Com / 102 Seg LCD Driver
*************************************************************************************
;
Write Display_Picture Data into Display Data RAM of EPL43102
;************************************************************************************
DATA_WRITE:
TBPTL
#DISPLAY_PICTURE*2
;DEFINE DISPLAY PICTURE DATA INDEX
TBPTM
#DISPLAY_PICTURE/0x80
TBPTH
#DISPLAY_PICTURE/0x8000
DATA_WRITE_43102:
MOV
A,#LINE_Y_MAX
MOV
REG_LCDARH,A
;MAX PAGES OF DDRAM
DATA_W1:
MOV
A,#LINE_X_MAX
MOV
REG_LCDARL,A
;SET MAX SEGMENTS OF DDRAM
BC
REG_PORTB,F_LCD_A0
MOV
A,#LCD_COM_PAGE
ADD
A,REG_LCDARH
CALL
WRITE_LCD_1BYTE
MOV
A,#0b00000000
CALL
WRITE_LCD_1BYTE
MOV
A,#0b00010000
CALL
WRITE_LCD_1BYTE
BS
REG_PORTB,F_LCD_A0
;SET LCD /A0 = 1 DATA OUTPUT
TBRD
01,REG_ACC
;ACCESS THE DATA OF DISPLAY_PICTURE
CALL
WRITE_LCD_1BYTE
DEC
REG_LCDARL
JBS
REG_STATUS,F_C,DATA_W2
DEC
REG_LCDARH
JBS
REG_STATUS,F_C,DATA_W1
BC
REG_PORTB,F_LCD_A0
;SET LCD /A0=0 INSTRUCTION OUTPUT
;SET LOWER ORDER COLUMN ADDRESS=0000
;SET HIGHER ORDER COLUMN ADDRESS=0000
DATA_W2:
;IDENTIFY RES_STATUS CARRY BIT SET OR NOT
;LCD /A0 = 0 FOR INSTRUCTION OUTPUT
RET
44 •
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
;*****************************************************************************
;
Write One Byte Data into DDRAM (Parallel Mode 80 Series)
;*****************************************************************************
;AT FIRST DEFINE A0 TO IDENTIFY DATA OR INSTRUCTION WRITE
WRITE_LCD_1BYTE:
JBS REG_DCRG,F_LAHEN,WRITE_LCD_1BYTE_1
;CHECK REG_DCRG LAHEN BIT=1 OR NOT
BC
;SET /WR=0 ENABLE WRITE
REG_PORTC,F_LCD_WR
MOV REG_DATA,A
;MOVE A → PORT_G
NOP
;Write low pulse( Wait 2 instruction cycles)
NOP
BS REG_PORTC,F_LCD_WR
;SET /WR=1 DISABLE WRITE
NOP
NOP
NOP
NOP
RET
WRITE_LCD_1BYTE_1:
MOV REG_DATA,
;MOVE A → PORT_G
RET
;*****************************************************************************
;
Read One Byte Data into DDRAM (Parallel Mode 80 Series)
;*****************************************************************************
;AT FIRST DEFINE A0 TO IDENTIFY DATA OR INSTRUCTION READ
READ_LCD_1BYTE:
BC
REG_PORTB,F_LCD_RD
;SET /RD=0 ENABLE READ
NOP
NOP
MOV A,REG_DATA
;MOVE PORT_G → A
NOP
BS
REG_PORTB,F_LCD_RD
;SET /RD=1 DISABLE READ
NOP
RET
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
45
EPL43102
43 Com / 102 Seg LCD Driver
10 Electrical Characteristics
10.1 Absolute Maximum Ratings
Parameter
Applicable
Pins
Symbol
Condition
Rated Value
Power supply voltage
VDD
VDD
－
-0.3 to +7
Driver supply voltage
VOUT
VLCD
－
-0.3 to +17
All Input
VIN
－
-0.3 to VDD+0.3
－
TA
－
-30 to +80
－
－
－
-55 to +125
Input voltage
Operating temperature
range
Storage temperature
range
Unit
V
°C
10.2 Recommended Operating Conditions
Parameter
Power supply
Voltage
Voltage converter
output voltage
Output voltage
Input voltage
Operating temperature
range
46 •
Rated Value
Applicable
Pins
Symbol
VDD
VDD
VOUT
Condition
Unit
Min.
Typ.
Max.
－
2.2
－
5.5
VOUT
－
4.0
－
15
－
VOH
－
0.7VDD
－
VDD
－
VOL
－
VSS
－
0.3VDD
－
VIH
－
0.7VDD
－
VDD
－
VIL
－
VSS
－
0.3VDD
－
TA
－
0
－
40
V
°C
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
10.3 DC Characteristics
VSS=0V, VDD=2.6 to 3.3V, TA= -30~80°C
Parameter
Applicable
Pins
Symbol
Power supply
voltage
VDD
VDD
Voltage converter
input voltage
VDD
VDD
VDD
VDD
Reference voltage
−
Regulated voltage
V0
V0
V1
V2
V3
V4
VDD2
VDD3
VDD4
VDD5
VREF0
VREF20
VREF40
V0
VOUT0
VOUT1
VOUT2
VOUT3
VOUT4
OP Amp voltage
output of LCD
power supply
1
Rated Value
Condition
Unit
Min.
Typ.
Max.
−
2.2
－
5.5
2 × boost
3 × boost
4 × boost
5 × boost
TA = 0°C
TA = 20°C
TA = 40°C
TA = 0~40°C
2.2
2.2
2.2
2.2
2.07
1.96
1.86
V0-4%
－
－
－
－
－
－
－
－
－
2.16
2.05
1.94
V0
V0
V1
V2
V3
V4
5.5
5.0
3.75
3.0
2.25
2.14
2.02
V0+4%
－
－
－
－
－
95
99
100
－
2
5
400
25
-3
1.2
800
50
-4
2.2
1200
75
-5
3.2
No load
2&3
x2/x3/x4/x5
No load
Current load
Iload= 50µA
V
mV
Voltage converter
output voltage
LCD driver ON
resistance
VOUT
VOUT
COMn
SEGn
RON
Reset resistor
/RES
RRESET
5
IOH
IOL
VDD=3V, Vin=0V
VDD=3V, Vin=1.7V
VDD=3V, VOH=2.4V
VDD=3V, VOL=0.2V
IIL
VIN= VDD or 0V
－
－
±1
－
－
－
－
±3
－
70
100
µA
－
40
55
µA
0.75
1
－
µA
-0.75
-1
－
µA
Output current
(Source and Drain)
Input leakage
current
Output Tri-state
All Input
4
5
Dynamic current
consumption
(1/43 duty)
－
IDDD1
Dynamic current
consumption
(1/32 duty)
－
IDDD2
V1 sink ability
V1
Isv1
V4 source ability
V4
Isv4
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
VDD=3V, TA=25°C,
Five boosting,
Internal OSC,
fOSC=22kHz,
1/43 duty ratio, no load
All display pattern off,
VDD=3V, TA=25°C
Double boosting,
External OSC,.
fOSC=22kHz,
1/32 duty ratio, no load
All display pattern off
V0=3.6V,
V1=2.4V (No load)
VOH=2.8V
V0=3.6V,
V4=1.2V (No load)
VOL=0.8V
%
kΩ
mA
µA
47
EPL43102
43 Com / 102 Seg LCD Driver
Applicable
Parameter
Pins
Current
consumption
Frame frequency
Internal Oscillator
frequency
External input
Oscillator
Note
1
:
2
Symbol
Rated Value
Condition
Unit
Min.
Typ.
Max.
IDDs1
Standby mode
－
5
10
IDDs2
Sleep mode
－
1
2
−
－
85
－
fFM
－
fOSC
TA=25°C
17
22
27
OSC
fOSC
TA=25°C
－
22
－
µA
Hz
kHz
V 0 = (1 +
(63 − α )
Rb
) × VEV ; VEV = (1 −
) × VREF
Ra
252
:
LCD Bias
1/8 Bias
1/7.5 Bias
1/7 Bias
1/6.5 Bias
1/6 Bias
1/5.5 Bias
1/5 Bias
1/4.5 Bias
V1
V0
V2
(7/8) × V0
(6.5/7.5) × V0
(6/7) × V0
(5.5/6.5) × V0
(5/6) × V0
(4.5/5.5) × V0
(4/5) × V0
(3.5/4.5) × V0
(6/8) × V0
(5.5/7.5) × V0
(5/7) × V0
(4.5/6.5) × V0
(4/6) × V0
(3.5/5.5) × V0
(3/5) × V0
(2.5/4.5) × V0
V3
V4
(2/8) × V0
(2/7.5) × V0
(2/7) × V0
(2/6.5) × V0
(2/6) × V0
(2/5.5) × V0
(2/5) × V0
(2/4.5) × V0
(1/8) × V0
(1/7.5) × V0
(1/7) × V0
(1/6.5) × V0
(1/6) × V0
(1/5.5) × V0
(1/5) × V0
(1/4.5) × V0
1/4 Bias
(3/4) × V0
(2/4) × V0
(2/4) × V0
(1/4) × V0
1/3.5 Bias
(2.5/3.5) × V0
(1.5/3.5) × V0
(2/3.5) × V0
(1/3.5) × V0
1/3 Bias
(2/3) × V0
(1/3) × V0
(2/3) × V0
(1/3) × V0
3 : The target value of V0~V4 is Theoretical Value ± 50mV
4
5
48 •
: Input pin D0~D7, A0, /RD, /WR, /CS1, CS2, CLS, M/S, C86, P/S, IRS
: Output pin D0~D7, FR, FRS, /DOF, CL
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
10.4 AC Characteristics
Serial Interface Timing Characteristics
/CS1, CS2
tCHS
tCSS
A0
/WR
(R/W)
tASS
D6
(SCK)
tCYCS
tCLLS
tDSS
tAHS
tCLHS
tDHS
D7
(SDI)
tOHS
tDDS
D5
(SDO)
VSS=0V, VDD=2.6 to 3.3V, TA= 0~40°C
Parameter
Chip Select Setup Time
Chip Select Hold Time
Address Setup time
Address Hold time
Data Setup Time
Data Hold Time
Clock Cycle Time
Clock L Time
Clock H Time
Data Delay Time
Data Disable Time
Applicable
Pins
/CS1
CS2
A0
R/W
D7
(SDI)
D6
(SCK)
D5
(SDO)
Symbol
Condition
Rated Value
Min.
tCSS
tCHS
tASS
tAHS
tDSS
tDHS
tCYCS
tCLLS
tCLHS
tDDS
tOHS
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
DATA→SCK↑
SCK↑→DATA
CL= 100 pF
100
100
100
100
80
80
－
300
100
100
－
10
Unit
Max.
－
－
ns
80
50
49
EPL43102
43 Com / 102 Seg LCD Driver
10.5 80-Family MPU Read/Write Timing Characteristics
tAH8
A0
/CS1
(CS2)
tAW8
tCYC8
tCC8
/WR,/RD
tDS8
tDH8
D0 to D7
(Write)
tACC8
tOH8
D0 to D7
(Read)
VSS = 0V, VDD = 2.6 to 3.3V, TA = 0~40°C
Parameter
50 •
Applicable
Pins
Symbol
Condition
Rated Value
Min.
Max.
Address Setup Time
Address Hold Time
A0
tAW8
tAH8
－
0
0
－
System Cycle Time
A0
tCYC8
－
500
－
Pulse Width(/WR)
Pulse Width(/RD)
Data Setup Time
Data Hold Time
Read Access Time
Output Disable Time
/WR
/RD
tCC8
－
D0~D7
tDS8
tDH8
tACC8
tOH8
－
CL=100pF
160
200
20
10
－
10
－
Unit
ns
－
60
40
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
10.6 68-Family MPU Read/Write Timing Characteristics
tcyc6
E
tEW
tAW6
A0
R/W
tAH6
/CS1
(CS2)
tDS6
tDH6
D0 to D7
(Write)
tACC6
tOH6
D0 to D7
(Read)
VSS=0V, VDD=2.6 to 3.3V, TA= 0~40°C
Parameter
Applicable
Pins
Symbol
Condition
Rated Value
Min.
Max.
Address Setup Time
Address Hold Time
A0
R/W
tAW6
tAH6
－
0
0
－
System Cycle Time
A0
tCYC6
－
500
－
E
tEW
－
D0~D7
tDS6
tDH6
tACC6
tOH6
Pulse Width(/WR)
Pulse Width(/RD)
Data Setup Time
Data Hold Time
Read Access Time
Output Disable Time
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
－
CL=100pF
160
200
20
10
－
10
－
Unit
ns
－
60
40
51
EPL43102
43 Com / 102 Seg LCD Driver
11 Pin Configuration
Input Pin Configuration
VDD
Input/Output Pin Configuration
Input/Output Pin Configuration
VDD
Output data
Output enable
Input enable
52 •
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
Output Pin Configuration
VDD
R
e
s
e
t
I
n
p
u
t
Reset Pin Configuration
VDD
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
53
EPL43102
43 Com / 102 Seg LCD Driver
LCD Output Pin Configuration
V0
V0
V1
V2
COMMON
OUTPUT
54 •
SEGMENT
OUTPUT
V4
V3
VSS
VSS
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
12 MPU Interface
Elan 8-bit MPU ( with external memory )
VDD
VCC
PORT D_1
PORT A,B
A0
VCC
/CS1
CS2
RISC2 MPU
C68
EPL43102
PORT G
PORT D_2
PORT D_3
/RES
GND
D0 ~D7
/RD
/WR
/RES
VDD
LCD PANEL
PORT D_4
PORT D_5
PS
GND
/RESET
VDD
VCC
/OE
R/W
/CE
FLASH
D0 ~D7
A0~An
GND
Serial Interface (SPI)
VDD
VCC
A0
A0
PORT3_1
/CS1
CS2
MPU
VDD OR VSS
C68
LCD PANEL
VDD
VCC
EPL43102
SDI (D7)
SCK (D6)
SDO (D5)
PORT2
PORT1
PORT0
PS
/RES
/RES
GND
GND
/RESET
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
55
EPL43102
43 Com / 102 Seg LCD Driver
80-Family MPU
VDD
VCC
A0
A1~A7
/IORQ
A0
DECODER
VCC
/CS1
CS2
80 type MPU
C68
EPL43102
D0 ~D7
/RD
/WR
/RES
GND
D0 ~D7
/RD
/WR
/RES
VDD
PS
GND
/RESET
68-Family MPU
VDD
VCC
A0
A1~A15
VMA
A0
DECODER
68 type MPU
VCC
/CS1
CS2
VDD
C68
EPL43102
D0 ~D7
E
R/W
/RES
GND
D0 ~D7
/RD
/WR
/RES
VDD
PS
GND
/RESET
56 •
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
EPL43102
43 Com / 102 Seg LCD Driver
13 Application Circuits
Example 1:
42×102 pixels driving application circuits (“Single-chip” using internal oscillator)
LCD PANEL
42X102 PIXELS
COM0~41
SEG0~SEG101
CLS
/IORQ
A0
.
.
An
FR
CL
/DOF
V0
V1
DECODER
MASTER
V2
V3
V4
M/S
( EPL43102 )
OSC
/CS1 CS2 A0
/RD /WR
D0~D7
/RST
A0
/RD
/WR
D0~D7
/RES
RESET
CIRCUIT
Example 2:
43×204 pixels driving application circuits (“Multi-chip” using external oscillator)
LCD PANEL
42X204 PIXELS
WITH ICONS DISPLAY
COM0~41+COMI
SEG0~SEG101
CLS
/IORQ
A0
.
.
An
DECODER
SEG0~SEG101
FR
CL
/DOF
V0
V1
MASTER
(EPL43102)
V2
V3
V4
M/S
OSC /CS1 CS2 A0 /RD /WR D0~D7 /RST
FR
CL
/DOF
V0
V1
V2
V3
V4
M/S
SLAVE
(EPL43102)
OSC /CS1 CS2 A0 /RD /WR D0~D7 /RST
MPU
CLK0
A0
/RD
/WR
D0~D7
/RES
RESET
CIRCUIT
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)
57
EPL43102
43 Com / 102 Seg LCD Driver
58 •
Product Specification (V1.8) 01.20.2006
(This specification is subject to change without further notice)