TM1803 is a 3 bits LED (light-emitting diode display) drive control circuit, internal integrated with MCU digital interface, latch, LED high voltage driver and so on .Through the external MCU control, the chip can achieve separate luminance, And through cascade control can achieve outdoor large-screen color dot-matrix light-emitting control. TM1803 has excellent performance and high reliability.

Feature

Use high-voltage power CMOS process
Output voltage is up to 24V
Brightness adjustment circuit(256)
Serial-shift and cascade Interface
Oscillation mode：Built-in RC oscillator, signal clock synchronization. While accepting the completed data of this module, data can be auto-shaped and transmitted to the next chip via data output pin.
Built-in power-on reset circuit
PWM control side can achieve 256 adjustment, scan frequency not less than 400hz/ s
The completion of data reception and decoding by a signal line
When the refresh rate of 30 frames/ s, the number of cascade is not less than 512 on low-speed mode. And it is not less than 1024 on high-speed mode.
SOP8 package
Data transmission speed can be 400Kbps and 800Kbps two modes