TM1637 Digital Tube Led Clock 4 Display Module
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Category: LED
SKU: 1699
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This LED driver is found in frontpanel controllers of consumer electronics such as DVD players. The added features such as the matrix keyboard scanning are useful in these applications. The typical application schematic is shown below.
The TM1637 has a single pin for Data input (commands, LED segments) and Data output (key status). This pin can be connected to mbed MOSI and MISO using a series/pull-up resistor. The device also needs an SCK pin. The protocol is ''I2C-like'', but not compatible to I2C (very strange, uses commands instead of address+RW bits, you could not have more than one device on the same bus since the I2C address is not used).
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