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Product
20x4 Parallel Character OLED
Part Number: CFAL2004A-Y
Consider using this 4x20 character yellow OLED to possibly lower the power requirements for designs using a STN character display.
Also available in other color variations (minimum order may be required)
8-bit or 4-bit parallel interface
The WS0010 controller interface is very similar to industry standard Hitachi HD44780.
Operating temperature range from -40°C to 80°.
Physical Characteristics
Characters x Lines 20 x 4
Module Overall width
height
depth
millimeters
98
60
10
inches
3.86
2.36
0.39
PCB Outline width
height
depth
millimeters
98
60
10
inches
3.86
2.36
0.39
Viewing Area Width
Height
millimeters
77
25.2
inches
3.03
0.99
Active Area Width
Height
millimeters
70.16
20.95
inches
2.76
0.83
Character Size Width
Height
millimeters
2.9
4.75
inches
0.114
0.187
Character Pitch Width
Height
millimeters
3.54
5.4
inches
0.139
0.213
Dot Size Width
Height
millimeters
0.54
0.55
inches
0.021
0.022
Dot Pitch Width
Height
millimeters
0.59
0.6
inches
0.023
0.024
Optical Characteristics
Glass Type OLED Polarizer Emissive
Mode Positive Foreground Color Yellow Background Color Black
Electrical Specifications
Supply Voltage for Logic Minimum 4.8V Supply Voltage for Logic Maximum 5.3V Supply Voltage for Logic Typical 5V
Supply Current Typical 55mA Module Connector Pitch 2.54mm
Environmental
Operating Temperatures min
max
Celsius
-40°
80°
Fahrenheit
-40°
176°
Storage Temperatures min
max
Celsius
-40°
80°
Fahrenheit
-40°
176°
Humidity min
max
Non-condensing
0%
90%
Products Affected:
CFAL2004A-Y, CFAL1602H0-Y Date Issued:
January 14, 2025 Summary:
PCB Modification Description:
The PCB is being modified to accommodate a new IC in the boost circuit. The boost circuit is not used on this OLED variant and does not affect the functionality. Reason:
The IC is being changed to address lead time issues. Availability:
Contact Crystalfontz Support for up-to-date information by emailing support@crystalfontz.com.
Products Affected:
CFAL2004A-Y, CFAL2002A-Y, CFAL1602L0-Y, CFAL1202A-Y, CFAL5016A-Y, CFAL0802A-Y, CFAL1602C-B, CFAL1602C-W, CFAL1602C-Y Date Issued:
August 17, 2021 Summary:
Reset Pin Change Description:
RST and CST, the components in the RC filter for the reset pin, are being modified. RST will be 33kOhms and CST will be 1uF. Reason:
Some reset circuits have shown not to be strong enough to drive the reset pin within the specified timing. If the reset circuit is not strong enough, the controller will not properly reset which causes abnormal behavior.
Products Affected:
CFAL2004A-Y, CFAL2002A-Y, CFAL1602L0-Y, CFAL1202A-Y, CFAL5016A-Y, CFAL0802A-Y, CFAL1602C-W, CFAL1602C-Y, CFAL1602C-YT, CFAL1602C-PW, CFAL1602C-PY, CFAL5016A-PY Date Issued:
February 10, 2021 Summary:
Small Layout Change Description:
Changing manufacturing locations of the wafers used in the controller chip. The layout has to be slightly modified to accommodate the practices at the new facility. The functionality will remain the same. Reason:
Changing manufacturing locations due to the wafer process no longer being supported by the original facility.
Product Affected:
CFAL2004A-Y Date Issued:
January 22, 2019 Summary:
Bezel Change Description:
The Bezel will be modified to add 2 holes on each of the right and left sides of the Bezel. Reason:
This will improve the Bezel alignment and installation during the assembly process. Impact:
This will not affect the operation of the display. Recommendation:
None Availability:
The displays with the revised Bezels will be available after current stock is depleted. Price Change:
None
New Product:
CFAL2004A-Y Date Issued:
May 6, 2013 Summary:
(New Product) CFAL2004A-Y Description:
OLED Modules: Parallel Character OLED 20x4, RoHS Compliant, Yellow, -40°C to +80°C
New Product:
CFAL2004A-Y Date Issued:
January 13, 2012 Summary:
(New Product) CFAL2004A-Y Description:
Under OLED Modules: Parallel Character OLED 20x4, RoHS Compliant, Yellow, -20°C - +70°C
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