LM13232ACW
LCD Module User Manual
Prepared by:
Checked by:
Approved by:
Caiwei
Date: 2022-06-29
Date:
Date:
Rev.
Descriptions
Release Date
0.1
Preliminary release
2010-03-03
0.2
Update Outline Dwg
2022-06-29
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LCD Module User Manual
LM13232ACW
Table of Content
1.
Basic Specifications...............................................................................................................3
1.1
Display Specifications……………………………………………………………………………………………………… 3
1.2
Mechanical Specifications……………………………………………………………………………………………….… 3
1.3
Block Diagram………………………………………………………………………………………………………………. 3
1.4
Terminal Functions…………………………………………………………………………………………………………. 4
2.
Absolute Maximum Ratings...................................................................................................5
3.
Electrical Characteristics.......................................................................................................5
3.1
DC Characteristics…………………………………………………………………………………………………………. 5
3.2
LED Backlight Circuit Characteristics……………………………………………………………………………………. 5
3.3
AC Characteristics…………………………………………………………………………………………………………. 6
4.
Function specifications..........................................................................................................8
4.1
Basic Setting……………………………………………………………………………………………………………….. 8
4.2
Resetting the LCD module ………………………………………………………………………………………………. 8
4.3
Display Memory Map……………………………………………………………………………………………………… 8
4.4
Display Commands……………………………………………………………………………………………………..
9
4.5
Display Commands (continue)………………………………………………………………………………………….. 10
5.
Design and Handling Precaution...........................................................................……………11
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1. Basic Specifications
1.1 Display Specifications
1) LCD Display Mode
: FSTN, Positive, Transflective
2) Display Color
: Display Data = “0” : Light Gray (*1)
: Display Data = “1” : Dark Gray (*2)
3) Viewing Angle
: 6H
4) Driving Method
: 1/33 duty, 1/6 bias
5) Backlight
: White LED backlight
Note:
*1. Color tone may slightly change by Temperature and Driving Condition.
*2. The Color is defined as the inactive / background color
1.2 Mechanical Specifications
1) Outline Dimension
: 80.0 x 35.0 x 11.5MAX (mm)
(See attached Outline Drawing for details)
1.3 Block Diagram
BLA
Backlight Circuit
ST7565R or equivalent
VSS
VDD
LCD Panel
R/W,E,D0~D7
132×32Pixels
/CS1,P/S, /RES, A0
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1.4 Terminal Functions
Pin
PIN
Descriptions
No.
Name
I/O
Parallel mode <default>
Serial mode
1
VSS
Power Negative power supply,0V
2
VDD
Power Positive power supply
3
NC
-
No Connection, leave open
Register Select
4
A0
Input
A0 = H, Transferring the Display Data
A0 = L, Transferring the Control Data
Read write control
Not used, pull high or low
5
R/W
Input
R/W=H; data or status read
R/W=L; data or command write
6
E
Input
Enable trigger
Not used, pull high or low
7
D0
Bi-directional data bus
Not used, leave open or pull high
:
:
I/O
12
D5
13
D6
I/O
Serial Clock Input
(SCLK)
(Input)
14
D7
I/O
Serial Data Input
(SID)
(Input)
15
BLA
Power Positive power for LED backlight
Chip Select
16
/CS1
Input
/CS1=L, enable access to the LCD module
/CS1=H, disable access to the LCD module
Interface selection:
Interface selection:
17
P/S
Input
P/S=H; 8 bit parallel bus mode
P/S=L; serial mode
Reset signal
18
/RES
Input
/RES = L, Initialization is executed
/RES = H, Normal running
Note:
It is write only, in serial mode
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2. Absolute Maximum Ratings
Items
Symbol
Min.
Max.
Unit Condition
Supply Voltage
V DD
-0.3
+3.4
V
V SS = 0V
Input Voltage
V IN
-0.3
V DD +0.3
V
V SS = 0V
Operating Temperature
T OP
-20
+70
C
No Condensation
Storage Temperature
T ST
-30
+80
C
No Condensation
Cautions:
Any Stresses exceeding the Absolute Maximum Ratings may cause substantial damage to the device. Functional
operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure
to extreme conditions may affect device reliability.
3. Electrical Characteristics
3.1 DC Characteristics
V SS =0V, V DD =3.3V, T OP =25 C
Items
Symbol
MIN.
TYP.
MAX.
Unit Condition /
Application Pin
Operating Voltage
V DD
2.9
3.3
3.4
V
VDD
Input High Voltage
V IH
0.8xV DD
-
V DD
V
R/W, E,/RES, /CS1,
Input Low Voltage
V IL
V SS
-
0.2xV DD
V
A0, P/S
Operating Current
I DD
-
0.15
0.6
mA
VDD
3.2 LED Backlight Circuit Characteristics
VSS=0V, If BLA =70mA, T OP =25 C
Items
Symbol
MIN.
TYP.
MAX.
Unit
Applicable Pin
Forward Voltage
Vf BLA
-
3.3
-
V
BLA
Forward Current
If BLA
-
70
80
mA
BLA
Cautions:
Exceeding the recommended driving current could cause substantial damage to the backlight and shorten its lifetime.
BLA
VSS
No. of LED = 4pcs
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3.3 AC Characteristics
3.3.1 6800 Mode System Bus Timing
V SS =0V, V DD =3.0V, T OP =25 C
Item
Symbol
MIN.
TYP.
MAX.
Unit
System cycle time
tcyc6
500
-
-
ns
Address setup time (A0)
taw6
10
-
-
ns
Address hold time (A0)
tah6
10
-
-
ns
Enable LOW pulse width (Read)
tewlr
275
-
-
ns
Enable LOW pulse width (Write)
tewlw
275
-
-
ns
Enable HIGH pulse width (Read)
tewhr
225
-
-
ns
Enable HIGH pulse width (Write)
tewhw
225
-
-
ns
Data setup time
tds6
50
-
-
ns
Data hold time
tdh6
10
-
-
ns
Read access time (*2)
tacc6
-
-
175
ns
Output disable time (*2)
tch6
13
-
125
ns
Note:
*1. Input signal rise/fall time should be less than 15ns .
*2. CL=100pF
*3.All timing is using 20% and 80% of VDD as the reference.
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3.3.2 Serial Mode Interface
V SS =0V, V DD =3.0V, T OP =25 C
Item
Symbol
MIN.
TYP.
MAX.
Unit
Serial Clock Period
tscyc
125
-
-
ns
Address setup time (A0)
tsas
38
-
-
ns
Address hold time (A0)
tsah
25
-
-
ns
SCL “H” pulse width
tshw
63
-
-
ns
SCL “L” pulse width
tslw
63
-
-
ns
Data setup time
tsds
38
-
-
ns
Data hold time
tsdh
25
-
-
ns
CS-SCL time
tcss
38
-
-
ns
CS-SCL time
tcsh
75
-
-
ns
Note:
*1. Input signal rise/fall time should be less than 15ns .
*2. CL=100pF
*3.All timing is using 20% and 80% of VDD as the reference.
3.3.3 Reset Timing
V SS =0V, V DD =3.0V, T OP =25 C
Item
Symbol
MIN.
TYP.
MAX.
Unit
Reset time
tr
-
-
2.5
μs
Reset LOW pulse width
trw
2.5
-
-
μs
Note:
*1.All timing is using 20% and 80% of VDD as the reference.
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4. Function specifications
4.1 Basic Setting
To drive the LCD module correctly and provide normally display, please use the following setting
-
ADC = 0 (normal)
-
SHL select = 1 (reverse)
-
LCD Bias Select = 1/6
-
Initial Display Line = 0
-
Entire Display ON/OFF = OFF (normal)
-
Reverse Display ON/OFF = OFF (normal)
-
Set Power Control Set:
voltage follower = ON, voltage converter = ON, voltage regulator = ON
-
Display ON/OFF = ON
Note:
*1. These setting/commands should issue the LCD module while start up.
*2. See the Display Commands section for details.
4.2 Resetting the LCD module
The LCD module should be initialized by using /RES terminal.
While turning on the VDD and VSS power supply, maintain /RES terminal at LOW level. After the
power supply stabilized, release the reset terminal (/RES=HIGH)
4.3 Display Memory Map
Page address
data
LCD Display (front view)
D0
0
:
D7
D0
1
:
D7
D0
2
:
132x32 pixels
D7
D0
3
:
D7
Column Address
00h
83h
Note:
*1. ADC = 0 (normal)
*2. SHL Selection = 1 (reverse)
*3. Initial Display Line = 0
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4.4 Display Commands
Code
No. Instructions
Function
DON=0, display off
1
Display ON/OFF
0 1 0 1 0 1 0 1 1 1
DON=1, display on
Display start
Sets the display RAM display start line
2
Display start line set
0 1 0 0 1
address
address
Page
3
Set Page Address
0 1 0 1 0 1 1
Address
Set the display RAM page address
Set Column Address
0 1 0 0 0 0 1
Col. Add.
Upper
Set the upper-4-bit of column address counter
4
(Upper-4-bits)
Set Column Address
0 1 0 0 0 0 0
Col. Add.
Set the lower-4-bit of column address counter
(Lower-4-bits)
Lower
Read the status data
5
Read Status
0 0 1
Status
0 0 0 0
6
Write Display Data
1 1 0
Write Data
Write data into the display RAM
7
Read Display Data
1 0 1
Read Data
Read data form the display RAM
Sets the display RAM address SEG output
8
ADC Select
0 1 0 1 0 1 0 0 0 0
correspondence
ADC= 0,normal . ADC=1, reverse
REV=0, Normal display
9
Normal/Reverse Display
0 1 0 1 0 1 0 0 1 1
REV=1, Reverse display
EON=0, Normal display
10
Entire Display ON/OFF
0 1 0 1 0 1 0 0 1 0
EON=1, Entire display ON
Set the LCD driving voltage bias
11
Set LCD Bias
0 1 0 1 0 1 0 0 0 1
BIAS=0, 1/6 BIAS
BIAS=1, 1/5 BIAS
Enter the “Read-Modify-Write” mode
column address counter will increase in each
12
Set Read-Modify-Write
0 1 0 1 1 1 0 0 0 0 0 “Write Display Data”,
and will not increase in each “Read Display
Data command”
13
Reset Read-Modify-Write 0 1 0 1 1 1 0 1 1 1 0 Clear the “Read-Modify-Write” mode
14
Reset
0 1 0 1 1 1 0 0 0 1 0 Resets the LCD module
Set the COM scanning direction
SHL=0, Normal display
15
SHL Select
0 1 0 1 1 0 0
* * *
SHL=1, Flipped in y direction
* = don’t care terms
Set the power circuit operation mode
VF: LCD Supply Voltage Follower
16
Power Control Set
0 1 0 0 0 1 0 1
VR: LCD Supply Voltage Regulator
VC: LCD Supply Voltage Converter
(1=ON, 0=OFF)
Radio
17
Regulator Resistor Select 0 1 0 0 0 1 0 0
setting
Set the built-in resistor ratio (Rb/Ra)
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4.5 Display Commands (continue)
Code
No.
Instructions
Function
18
Electronic volume mode set 0 1 0 1 0 0 0 0 0 0 1 Set reference voltage mode
Electronic volume register
Electronic
Set reference voltage register
set
0 1 0 * *
Control value
(Display contrast value)
19
0 1 0 1 0 1 0 1 1 0 S Sleep Mode (2 byte command)
Sleep Mode Set
0 1 0 0 0 0 0 0 0 0 0
S=0, sleep mode
S=1, normal mode
Booster Ratio Set
0 1 0 1 1 1 1 1 0 0 0 Booster Ratio (2 byte command)
Ratio=00, 2x, 3x, 4x
20
0 1 0 0 0 0 0 0 0 Ratio Ratio=01, 5x
Ratio=11, 6x
21
NOP
0 1 0 1 1 1 0 0 0 1 1 Non-operation command
Note:
*1. Do not use any other command not listed, or the system malfunction may result.
*2. For the details of the Display Commands, please refer to ST7565R data sheet.
4.5.1 Power off the LCD Module
It recommends that enter Sleep Mode before power off the LCD module.
4.5.2 Refreshing The LCD Module
It recommends that the operating modes and display contents be refreshed periodically to prevent
the effect of unexpected noise.
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5. Design and Handling Precaution
1.
The LCD panel is made by glass. Any mechanical shock (eg. dropping form high place)
will damage the LCD module.
2.
Do not add excessive force on the surface of the display, which may cause the Display
color change abnormally.
3.
The polarizer on the LCD is easily get scratched. If possible, do not remove the LCD
protective film until the last step of installation.
4.
Never attempt to disassemble or rework the LCD module.
5.
Only Clean the LCD with Isopropyl Alcohol or Ethyl Alcohol. Other solvents (eg. water)
may damage the LCD.
6.
When mounting the LCD module, make sure that it is free form twisting, warping and
distortion.
7.
Ensure to provide enough space (with cushion) between case and LCD panel to prevent
external force adding on it, or it may cause damage to the LCD or degrade the display
result.
8.
Only hold the LCD module by its side. Never hold LCD module by add force on the heat
seal or TAB.
9.
Never add force to component of the LCD module. It may cause invisible damage or
degrade of the reliability.
10.
LCD module could be easily damaged by static electricity. Be careful to maintain an
optimum anti-static work environment to protect the LCD module.
11.
When peeling off the protective film from LCD, static charge may cause abnormal
display pattern. It is normal and will resume to normal in a short while.
12.
Take care and prevent get hurt by the LCD panel sharp edge.
13.
Never operate the LCD module exceed the absolute maximum ratings.
14.
Keep the signal line as short as possible to prevent noisy signal applying to LCD
module.
15.
Never apply signal to the LCD module without power supply.
16.
IC chip (eg. TAB or COG) is sensitive to the light. Strong lighting environment could
possibly cause malfunction. Light sealing structure casing is recommend.
17.
LCD module reliability may be reduced by temperature shock.
18.
When storing the LCD module, avoid exposure to the direct sunlight, high humidity, high
temperature or low temperature. They may damage or degrade the LCD module.
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