Static Electricity Be sure that you are grounded when handling displays.
Note 1: All the above voltages are on the basis of “ VSS=0V”.
Note 2: When this module is used beyond the above absolute maximum ratings, permanent
damage to the module may occur. Also for normal operations it’s desirable to use
this module under the conditions according to Section 3.2 “Electrical
Characteristics”. If this module is used beyond these conditions the module may
malfunction and the reliability could deteriorate.
The supporting pins can reduce the influences from stresses on the function pins.
These pins must be connected to external ground.
Ground of Analog Circuit
This is an analog ground pin. It should be connected to VSS externally
Ground of OEL System
This is a ground pin. It also acts as a reference for the logic pins, the OEL
driving voltages, and the analog circuits. It must be connected to external
ground.
N.C. No Connection
Power Supply for Logic Circuit
This is a voltage supply pin. It must be connected to external source.
BS1
Communicating Protocol Select
These pins are MCU interface selection input. See the following table:
7
8
BS2
CS#
9 RES#
10
11
12
13~20
D/C#
R/W#
E/RD#
D0~D7
Chip Select
This pin is the chip select input. The chip is enabled for MCU
communication only when CS# is pulled low.
Power Reset for Controller and Driver
This pin is reset signal input. When the pin is low, initialization of the chip
is executed.
Data/Command Control
This pin is Data/Command control pin. When the pin is pulled high, the input at
D7~D0 is treated as display data. When the pin is pulled low, the input at D7~D0
will be transferred to the command register. For detail relationship to MCU
interface signals, please refer to the Timing Characteristics Diagrams.
When the pin is pulled high and serial interface mode is selected, the data at
SDIN is treated as data. When it is pulled low, the data at SDIN will be
transferred to the command register. In I2C mode, this pin acts as SA0 for slave
address selection.
Read/Write Select or Write
This pin is MCU interface input. When interfacing to a 68XX-series
microprocessor, this pin will be used as Read/Write (R/W#) selection input. Pull
this pin to “High” for read mode and pull it “Low” for write mode.
When 80XX interface mode is selected, this pin will be the Write (WR#) input.
Data write operation is initiated when this pin is pulled low and the CS# is pulled
low.
Read/Write Enable or Read
This pin is MCU interface input. When interfacing to a 68XX-series
microprocessor, this pin will be used as the Enable (E) signal. Read/write
operation is initiated when this pin is pulled high and the CS# is pulled low.
When connecting to an 80XX-microprocessor, this pin receives the Read (RD#)
signal. Data read operation is initiated when this pin is pulled low and CS# is
pulled low.
Host Data Input/Output Bus
These pins are 8-bit bi-directional data bus to be connected to the
microprocessor’s data bus. When serial mode is selected, D1 will be the serial
data input SDIN and D0 will be the serial clock input SCLK. When I2C mode is
Please refer to the Technical Manual for the SSD1305
5.2 POWER UP/DOWN SEQUENCE
To protect panel and extend the panel lifetime, the driver IC power up/down routine should
include a delay period between high voltage and low voltage power sources during turn
on/off. It gives the panel enough time to complete the action of charge and discharge
before/after the operation.
5.2.1 POWER UP SEQUENCE
V
1. Power up V
DD
2. Send Display off command Vcc
3. Initialization
4. Clear Screen
5.Power up VCC V
6. Delay 100ms
(when VDD is stable) V
7. Send Display on command
ON VCC ON
DD
DD
SS Ground
Display On
5.2.2 POWER DOWN SEQUENCE
Display off V
1. Send Display off command
2. Power down V
VCC
CC
3. Delay 100ms
(When V
completely discharges) V
4. Power down V
V
reach 0 and panel is
CC
DD
DD
SS Ground
5.3 RESET CIRCUIT
When RES# input is low, the chip is initialized with the following status:
1. Display is OFF
2. 132x64 Display mode
3. Normal segment and display data colume and row address mapping (SEG0 mapped to
column address 00h and COM0 mapped to row address 00h)
4. Shift register data clear in serial interface
5. Display start line is set at display RAM address 0
6. Column address counter is set at 0
7. Normal scan direction of the COM outputs
8. Contrast control register is set at 80h
9. Normal display mode (Equivalent to A4h command)
Command usage and explanation of an actual example
<Initialisation Setting>
If the noise is accidentally occurred at the displaying window during the operation, please
reset the display in order to recover the display function.
Level of sample for approval set as limit sample
uniformity
Major No unmelted solder paste should be present on PCB
PCB
Critical Cold solder joints, missing solder connections, or oxidation are not allowed
Minor No residue or solder balls on PCB are allowed
Critical
Minor Tray
Purchaser should supply Densitron with detailed data of non-conforming sample.
After accepting it, Densitron should complete the analysis in two weeks from receiving the
sample.
If the analysis cannot be completed on time, Densitron must inform the purchaser.
7.3.2 Handling of non-conforming displays
If any non-conforming displays are found during customer acceptance inspection which
Densitron is clearly responsible for, return them to Densitron.
Both Densitron and customer should analyse the reason and discuss the handling of nonconforming displays when the reason is not clear.
Equally, both sides should discuss and come to agreement for issues pertaining to
modification of Densitron quality assurance standard.
Test Item Test Condition Evaluation and assessment
High Temperature Operation 85°C, 500 hours
Low Temperature Operation -30°C, 500 hours
High Temperature Storage 90°C, 500 hours
Low Temperature Storage -40°C, 500 hours
High Temperature & High
Humidity Storage
Thermal Shock
60°C, 90%RH, 500 hours
100 cycle of
-40°C ↔85°C 30 Mins dwell
No abnormalities in function
and appearance
No abnormalities in function
and appearance
No abnormalities in function
and appearance
No abnormalities in function
and appearance
No abnormalities in function
and appearance
No abnormalities in function
and appearance
• The samples used for above tests do not include polarizer.
• No moisture condensation is observed during tests.
8.1.1 FAILURE CHECK STANDARD
After the completion of the described reliability test, the samples were left at room
temperature for 2 hrs prior to conducting the failure teat at 23±5 °C; 55±15% RH
8.2 LIFE TIME
Item Description
Function, performance, appearance, etc. shall be free from remarkable deterioration
1
more than 10,000 hours under 120 cd/m² brightness and 50% Checkerboard, humidity
(50% RH), and in area not exposed to direct sunlight.
2 End of lifetime is specified as 50% of initial brightness.
If the panel breaks, be careful not to get the organic substance in your mouth or in your eyes.
If the organic substance touches your skin or clothes, wash it off immediately using soap and plenty of
water.
Mounting and Design
Place a transparent plate (e.g. acrylic, polycarbonate or glass) on the display surface to protect the
display from external pressure. Leave a small gap between the transparent plate and the display
surface.
Design the system so that no input signal is given unless the power supply voltage is applied.
Caution during OLED cleaning
Lightly wipe the display surface with a soft cloth soaked with Isopropyl alcohol, Ethyl alcohol or
Trichlorotriflorothane.
Do not wipe the display surface with dry or hard materials that will damage the polariser surface.
Do not use aromatic solvents (toluene and xylene), or ketonic solvents (ketone and acetone).
Caution against static charge
As the display uses C-MOS LSI drivers, connect any unused input terminal to V
input any signals before power is turned on.
Also, ground your body, work/assembly table and assembly equipment to protect against static
electricity.
Packaging
Displays use OLED elements, and must be treated as such. Avoid strong shock and drop from a
height.
To prevent displays from degradation, do not operate or store them exposed directly to sunshine or
high temperature/humidity.
Caution during operation
It is indispensable to drive the display within the specified voltage limit since excessive voltage
shortens its life.
Other Precautions
When a display module is operated for a long of time with fixed pattern may remain as an after image
or slight contrast deviation may occur.
Nonetheless, if the operation is interrupted and left unused for a while, normal state can be restored.
Also, there will be no problem in the reliability of the module.
Storage
Store the display in a dark place where the temperature is 25°C ± 10°C and the humidity below
50%RH.
Store the display in a clean environment, free from dust, organic solvents and corrosive gases.
Do not crash, shake or jolt the display (including accessories).