The I2C-7SEG board is a 5-pin CMOS device that provides 4-digit of 7-segment display using I2C bus. There are no external components required. Only two signal lines SDA and SCL plus supply voltage and ground are required to be connected. This makes it perfect for embedded systems that require LED display.
This board features innovations that set it apart from other 7-segment module. Innovations feature like on-board I2C address jumpers, pull-up resistors, power LED and 2.5V reference. The module can be quickly connected directly on to the breadboard. The board is small and compact in size 1.50 x 2.05 inches.
The I2C-7SEG is designed base on SAA1064 IC. The circuit is especially designed to drive four 7-segment LED displays with decimal point by means of multiplexing between two pairs of digits. It features an I2C bus slave transceiver interface with the possibility to program four different SLAVE ADDRESSES, a POWER RESET flag, 16 current sink OUTPUTS, controllable by software up to 21 mA, two multiplex drive outputs for common anode segments, an on-chip multiplex oscillator, control bits to select static, dynamic and blank mode, and one bit for segment test.
A jumper pins vary the fixed I2C address and allow up to four devices to share the same I2C bus.
• Nice bright GREEN color 7 segment display
• Flicker free multiplexed 7-segment display
• Total control of individual segment
• Display brightness controllable by software
• Automatically refreshes and updates each display digit
• Free up host controller for continuous display updates and refresh loops
• Stand alone module, no external components required
• On-board I2C address jumpers, pull-up resistors and power LED
• Decoupling supply voltage
• Design easy for breadboard
• High quality double sided PCB
• All SMT components
• Small and compact in size 1.50 x 2.05 inches
• Single row 0.4” width, 0.1” pitch header pins
• Flexible operating power supply voltage range of 4.5V to 15V
• Suitable for 5.0V microcontroller
For more information please see:
I2C-7SEG User Manual
Basic Stamp BS2P example code:
PICAXE example code:
Arduino example code: