新葡萄京官网-新萄京娱乐网址

TOPWAY
LCD Module User Manual
LM12832HCW
LM12832HCW
LCD Module User Manual
Prepared by:
Checked by:
Approved by:
Wang
Date:2018-6-27
Date:
Date:
Rev. Descriptions
Release Date
0.1
Prelimiay release
2018-6-27
URL: www.topwaydisplay.com
Document Name: LM12832HCW-Manual-Rev0.1
Page: 1 of 12
TOPWAY
LCD Module User Manual
LM12832HCW
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 ........................................................................................................... 9
4.1 Application circuit(Example) .......................................................................................................................................... 9
4.2 Adjusting the Display Contrast ...................................................................................................................................... 9
4.3 Basic Setting ................................................................................................................................................................ 9
4.4 Resetting the LCD module ........................................................................................................................................... 9
4.5 Display Memory Map ................................................................................................................................................. 10
4.6 Display Commands .................................................................................................................................................... 11
4.7 Display Commands (continue) .................................................................................................................................... 12
5. Design and Handling Precaution .......................................................................................... 12
URL: www.topwaydisplay.com
Document Name: LM12832HCW-Manual-Rev0.1
Page: 2 of 12
TOPWAY
LCD Module User Manual
LM12832HCW
1. Basic Specifications
1.1 Display Specifications
1) LCD Display Mode
: FSTN, Positive, Transflective
2) Display Color
: Display Data = “1” : Dark Gray(*1)
: Display Data = “0” : Light Gray (*2)
3) Viewing Angle
: 12H
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
*3. Fine Contrast adjustment function is necessary in the application design for optimal display result
1.2 Mechanical Specifications
1) Outline Dimension
: 37.2 x19.0 x 8.2(Exclude FPC Length)
(See attached Outline Drawing for details)
1.3 Block Diagram
BLA
Backlight Circuit
BLK
LCD Panel
128 × 32Pixels
VDD,VSS,ESD
XV0,V0,VG
ST7567 or equivalent
D0~D7
R/W,E,A0
C86,PSB,/RST,/CS
URL: www.topwaydisplay.com
Document Name: LM12832HCW-Manual-Rev0.1
Page: 3 of 12
TOPWAY
LCD Module User Manual
LM12832HCW
1.4 Terminal Functions
Descriptions
PIN
8-bit parallel
8-bit parallel
Serial mode
PIN NO
Name
I/O
8080 mode
6800mode(default)
1
ESD
Supply Negative power supply,0V
2
PSB
Input
PSB=High
PSB=High
PSB=Low
3
C86
Input
C86=Low
C86=High
C86=Low
4
VG
Power LCD driving voltage for segment circuits
5
XV0
Power
LCD driving voltage for common circuits at positive frame
6
V0
Power LCD driving voltage for common circuits at negative frame
7
VSS
Power Negative power supply,0V
8
VDD
Power Positive power supply
9
D7
I/O
8-bit Data bus;
Serial data input
10
D6
I/O
Three state I/O terminal for display data or
Serial clock input
11
D5
I/O
instruction data
Not used
:
:
I/O
when /CS=H,
Pull Hi
16
D0
I/O
D0~D7=High Impedance
17
E(/RD)
Input
/WR=H, /RD=L;
R/W=H,E=L;
Not used,
Data or Status
Data or Status read Pull Hi
read form the LCD form the LCD module
module
R/W=L,E=H  L;
18
R/W(/WR)
Input
/WR=L  H,
Data or Status latch
/RD=H;
into the LCD module
Data or Instruction
latch into the LCD
module
19
A0
Input
Register Select
A0 = H, Transferring the Display Data
A0 = L, Transferring the Control Data
20
/RST
Input
Reset signal
/RES = L, Initialization is executed
/RES = H, Normal running.
21
/CS
Input
Chip Select
/CS=L, enable access to the LCD module
/CS=H, disable access to the LCD module
22
ESD
Supply Negative power supply,0V
-
BLA
Power Positive power for LED backlight
-
BLK
Power Negative power supply for LED backlight, 0V
URL: www.topwaydisplay.com
Document Name: LM12832HCW-Manual-Rev0.1
Page: 4 of 12
TOPWAY
LCD Module User Manual
LM12832HCW
2. Absolute Maximum Ratings
Items
Symbol
Min.
Max.
Unit Condition
Supply Voltage
V DD
-0.3
+3.6
V
V SS = 0V
Input Voltage
V IN
-0.3
+3.6
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
2.8
-
3.3
V
VDD
Input High Voltage
V IH
0.7xV DD
-
V DD
V
PSB,C86,E(RD),R/W
Input Low Voltage
V IL
V SS
-
0.3xV DD
V
(WR),A0,/RST,/CS,
D0~D7
Operating Current
I DD
-
0.15
0.38
mA VDD
3.2 LED Backlight Circuit Characteristics
BLK=0V,BLA=3.3V, T OP =25  C
Items
Symbol
MIN.
TYP.
MAX.
Unit
Applicable Pin
Forward Voltage
BLA
-
3.3
-
V
BLA
Forward Current
I BLA
-
10
40
mA
BLA
Cautions:
Exceeding the recommended driving current could cause substantial damage to the backlight and shorten its lifetime.
BLA
BLK
No. of LED = 2 pcs
URL: www.topwaydisplay.com
Document Name: LM12832HCW-Manual-Rev0.1
Page: 5 of 12
TOPWAY
LCD Module User Manual
LM12832HCW
3.3 AC Characteristics
3.3.1 6800 Mode Interface(Defualt)
V SS =0V, V DD =3.3V, T OP =25  C
Item
Symbol
MIN.
TYP.
MAX.
Unit
System cycle time
tcyc6
312
-
-
ns
Address setup time (A0)
taw6
5
-
-
ns
Address hold time (A0)
tah6
13
-
-
ns
Control LOW pulse width (Read)
tewlr
104
-
-
ns
Control LOW pulse width (Write)
tewlw
104
-
-
ns
Control HIGH pulse width (Read)
tewhr
104
-
-
ns
Control HIGH pulse width (Write)
tewhw
182
-
-
ns
Write data setup time
tds6
52
-
-
ns
Write data hold time
tdh6
13
-
-
ns
Read data access time (*2)
tacc6
-
-
49
ns
Read date output disable time (*2)
toh6
7
-
35
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.
URL: www.topwaydisplay.com
Document Name: LM12832HCW-Manual-Rev0.1
Page: 6 of 12
TOPWAY
LCD Module User Manual
LM12832HCW
3.3.2 8080 Mode Interface
V SS =0V,V DD =3.3V,T OP =25  C
Item
Symbol
MIN.
TYP.
MAX.
Unit
System cycle time
tcyc8
312
-
-
ns
Address setup time (A0)
taw8
10
-
-
ns
Address hold time (A0)
tah8
13
-
-
ns
Control LOW pulse width (Read)
tccl r
182
-
-
ns
Control LOW pulse width (Write)
tcclw
104
-
-
ns
Control HIGH pulse width (Read)
tcch r
104
-
-
ns
Control HIGH pulse width (Write)
tcchw
104
-
-
ns
Write data setup time
tds8
52
-
-
ns
Write data hold time
tdh8
26
-
-
ns
Read data access time (*2)
tacc8
-
-
49
ns
Read data output disable time (*2)
tch8
6
-
35
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.
URL: www.topwaydisplay.com
Document Name: LM12832HCW-Manual-Rev0.1
Page: 7 of 12
TOPWAY
LCD Module User Manual
LM12832HCW
3.3.3 Serial Mode Interface
V SS =0V,V DD =3.3V,T OP =25  C
Item
Symbol
MIN.
TYP.
MAX.
Unit
Serial Clock Period
tscyc
65
-
-
ns
SCL “H” pulse width
tshw
33
-
-
ns
SCL “L” pulse width
tslw
33
-
-
ns
Address setup time (A0)
tsas
26
-
-
ns
Address hold time (A0)
tsah
13
-
-
ns
Data setup time
tsds
26
-
-
ns
Data hold time
tsdh
13
-
-
ns
/CS-SCL time
tcss
26
-
-
ns
/CS-SCL time
tcsh
52
-
-
ns
Note:
*1. Input signal rise/fall time should be less than 15ns .
*2. All timing is using 20% and 80% of VDD as the reference.
3.3.4 Reset Timing
V SS =0V, V DD =3.0V, T OP =25  C
Item
Symbol
MIN.
TYP.
MAX.
Unit
Reset time
tr
-
-
2
μs
Reset LOW pulse width
trw
2
-
-
μs
Note:
*1.All timing is using 20% and 80% of VDD as the reference.
URL: www.topwaydisplay.com
Document Name: LM12832HCW-Manual-Rev0.1
Page: 8 of 12
TOPWAY
LCD Module User Manual
LM12832HCW
4. Function specifications
4.1 Application circuit(Example)
- Internal Boosting
- 6800 mode
- C1,C2=1.0 μ F (25V)
TO MCU
Note:
Please refer to the ST7567 data sheet for details
4.2 Adjusting the Display Contrast
- This LCD module equipped with latest digital contrast adjustment function.
- Its display contrast could be adjusted by MCU command. (please see the command tables for
details)
- It is recommended to provide a contrast adjustment interface for end-user, where the best
display result could meet the individual preference in mass production.
4.3 Basic Setting
To drive the LCD module correctly and provide normally display, please use the following setting
- MX = 1 (Reverse)
- INV select = 0 (Normal)
- LCD Bias Select = 1/6
- Initial Display Line = 4
- 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.
4.4 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)
URL: www.topwaydisplay.com
Document Name: LM12832HCW-Manual-Rev0.1
Page: 9 of 12
TOPWAY
LCD Module User Manual
LM12832HCW
4.5 Display Memory Map
Page address
data
LCD Display (front view)
D0
0
:
D7
D0
1
:
D7
D0
128x32 pixels
2
:
D7
D0
3
:
D7
Column Address
04h
84h
Note:
*1. MX = 1 (reverse)
*2. INV Selection = 0(normal)
*3. Initial Display Line = 4
URL: www.topwaydisplay.com
Document Name: LM12832HCW-Manual-Rev0.1
Page: 10 of 12
TOPWAY
LCD Module User Manual
LM12832HCW
4.6 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.
Set the upper-4-bit of column address counter
(Upper-4-bits)
Upper
4
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
SEG Direction
0 1 0 1 0 1 0 0 0 0
correspondence
MX = 0,normal . MX=1, reverse
INV=0, Normal display
9
Inverse Display
0 1 0 1 0 1 0 0 1 1
INV=1, Reverse display
AP =0, Normal display
10
All Pixel ON
0 1 0 1 0 1 0 0 1 0
AP =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, 1/9 BIAS
BIAS=1, 1/7 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
MY =0, Normal display
15
COM Direction
0 1 0 1 1 0 0
* * *
MY=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)
URL: www.topwaydisplay.com
Document Name: LM12832HCW-Manual-Rev0.1
Page: 11 of 12
TOPWAY
LCD Module User Manual
LM12832HCW
4.7 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
Rati
o
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 ST7567 data sheet.
4.7.1 Power off the LCD Module
It recommends that enter Sleep Mode before power off the LCD module.
4.7.2 Refreshing The LCD Module
It recommends that the operating modes and display contents be refreshed periodically to prevent
the effect of unexpected noise.
5. Design and Handling Precaution
Please refer to "LCD-Module-Design-Handling-Precaution.pdf".
URL: www.topwaydisplay.com
Document Name: LM12832HCW-Manual-Rev0.1
Page: 12 of 12