244x68 Graphic LCD Display
Part Number: CFA835-TFK
Pricing
| Quantity | Price |
|---|---|
| 1 | $93.75 |
| 10 | $91.02 |
| 20 | $85.70 |
| 50 | $80.38 |
| 100 | $75.06 |
| 200 | $69.74 |
| 500 | $64.42 |
| 1000 | $59.10 |
* Contact us about potential lead times.
Need a written quote? Add to cart, then enter your email address in the "request a quote" box.
Datasheets
Description
The CFA835 product series are intelligent graphic LCD modules that offer USB and Serial interface, 6 button keypad, 4 status LED's and 5 GPIO.
Key Features- Versatile and reliable packet based communications with set of 61 commands simplifies programming for your particular application.
- Commands include tools to draw lines, rectangles, and circles. For example, create a chart to display temperature fluctuations over time.
- Five GPIOs can be used to control other devices or can be configured for optional ATX functionality.
- Only a single supply is needed. Wide power supply voltage range (VDD= +3.3v to +5.0v) is perfect for embedded systems.
- Made for the demands of a commercial environment, temperature operating range is -20°C to +70°C.
- The 12:00 o'clock viewing direction ensures optimal viewing for your products viewed at or below eye level.
- Fully decoded 6-button keypad allows key combinations. Large translucent silicone keys are responsive.
- Edge-lit backlight with 12 LEDs, 6 per side.
- Adjustable backlight and contrast. Backlight and contrast are fully voltage regulated over the power supply range.
- Front of display has four bicolor (red + green) LED status lights. For example, green could indicate "acceptable speed" while yellow-orange indicates "heavy usage, slow".
- Add multiple optional CFA-FBSCABs to customize your order for temperature sensing and fan controls (up to 256 temperature sensors and 64 fans).
- Easily integrate the CFA835 into your design with choice to two types of optional mounting brackets.
- Attractive stainless steel bezel or select from 4 overlay colors when used with a bracket.
Video Demonstrations
CFA835 VU Meter Emulation Demonstration
CFA835 Graphic LCD emulating a VU meter
Raspberry PI CFA835 Integration Video
Integrate a Raspberry Pi with a CFA835
TECHNICAL SPECS
For reference only. For design purposes, please use the specifications in the datasheet.
Physical Characteristics
| Column Dots x Row Dots | 244 x 68 |
| Module Overall | width | height | depth |
|---|---|---|---|
| millimeters | 142 | 38 | 20.8 |
| inches | 5.591 | 1.496 | 0.819 |
| *depth doesn't include Keypad | |||
| Viewing Area | width | height |
|---|---|---|
| millimeters | 83 | 27.5 |
| inches | 3.268 | 1.083 |
| Active Area | width | height |
|---|---|---|
| millimeters | 77.97 | 22.38 |
| inches | 3.070 | 0.881 |
| Character Size | width | height |
|---|---|---|
| millimeters | 3.23 | 4.88 |
| inches | 0.127 | 0.192 |
| Character Pitch | width | height |
|---|---|---|
| millimeters | 3.9 | 5.6 |
| inches | 0.154 | 0.220 |
| Dot Size | width | height |
|---|---|---|
| millimeters | 0.3 | 0.33 |
| inches | 0.012 | 0.013 |
| Dot Pitch | width | height |
|---|---|---|
| millimeters | 0.33 | 0.35 |
| inches | 0.013 | 0.014 |
| Weight | 55g |
| Keystroke Travel | 2.4mm |
| Keypad Depth | 12mm |
Optical Characteristics
| Glass Type/Glass Color | FSTN/Light Gray |
| Polarizer | Transflective |
| View Direction | 12 o'clock |
| Sunlight Readable | Yes |
| Backlight Color | White |
| Backlight Type | LED |
| Mode | Positive |
| Foreground Color | Dark |
| Background Color | Light Gray |
Electrical Specifications
| Supply Voltage for Logic Minimum | 3.3V |
| Supply Voltage for Logic Maximum | 5.5V |
| Supply Voltage for Logic Typical | 5V |
| Supply Current Minimum | 50mA |
| Supply Current Maximum | 267mA |
Environmental
| Operating Temperatures | min | max |
|---|---|---|
| Celsius | -20° | 70° |
| Fahrenheit | -4° | 158° |
| Storage Temperatures | min | max |
|---|---|---|
| Celsius | -30° | 80° |
| Fahrenheit | -22° | 176° |
| Humidity | min | max |
|---|---|---|
| Non-condensing | 0% | 90% |
Electronics
| Interface | Logic Level Serial, RS232, USB |
*Suggest a Correction
Part Change Notice
Subscribe to Part Change Notices by email 
or RSS 
Part Change Notice #10959: As part of our continuous improvement program, the CFA735 and CFA835 series displays are being revised.
| Products Affected: | CFA735-TFK-KR, CFA735-TFK-KT, CFA735-TML-KR, CFA735-TML-KT, CFA735-YYK-KR, CFA735-YYK-KT, CFA835-TML, CFA835-TFK, CFA835-YYK |
| Date Issued: | July 12, 2018 |
| Summary: | As part of our continuous improvement program, the CFA735 and CFA835 series displays are being revised. |
| Description: | Components have been updated to ensure the long-term availability of the modules. The LCD glass used has been changed to improve contrast. |
| Availability: | Samples will be available in November 2018. Last time buys of the current design may be made until January 2019. |
Part Change Notice #10669: CFA635, CFA735, and CFA835 displays with ATX (power on / off / reset) functionality enabled serial cable bundle change.
| Products Affected: | CFA835-TML, CFA835-TFK, CFA835-YYK |
| Date Issued: | July 29, 2015 |
| Summary: | CFA635, CFA735, and CFA835 displays with ATX (power on / off / reset) functionality enabled serial cable bundle change. |
| Description: | As part of our continuous improvement process, CFA635 KS, CFA735 KT, and CFA835 display modules with the ATX (power on / off / reset) functionality enabled will have their RS-232 SERIAL cable bundle options changed from a serial cable and WRPWRY24 to a serial cable and a WRPWRY25. With TX (power on / off / reset) functionality enabled, additional |
| Reason: | The WRPWRY24 is a power only cable and suitable for powering the CFA635, CFA735, and CFA835 when properly configured. When the displays are configured for ATX (power on / off / reset) functionality additional connections are necessary for proper operation. The WRPWRY25 offers the additional connections. |
| Impact: | Full functionality will now be available as the part is shipped. |
| Availability: | Immediate. |
| Price Change: | There is no price change associated with this change. |
Product Update #10582: (New Product) CFA835-TFK
| New Product: | CFA835-TFK |
| Date Issued: | February 3, 2014 |
| Summary: | (New Product) CFA835-TFK |
| Description: | Intelligent USB LCD Modules: USB+Serial Graphic LCD Module, Keypad, White LED Backlight, FSTN Positive, Transflective, -20°C to +70°C, 12:00. |
For fan control and temperature sensing, use with:
For "full swing" serial interface, use with:
For reference only. For design purposes, please use the specifications in the datasheet.
