SAA1064 serial I2C bus LED dynamic driver interface circuit diagram

The picture shows the SA A10 64 serial I2C bus LED display driver integrated circuit dynamic driver interface circuit.

Since the dynamic scan display of SAA1064 relies on the on-chip multi-switch data latch to control the circuit in real time, the main device does not need to intervene. Therefore, the dynamic working mode can best utilize the functional potential of SAA1064 and is the most commonly used working mode. The bit numbers of the LEDs in the figure correspond to the sequence of segment selection data in the data operation format. CEXT is the clock oscillation capacitor, which ensures the working signal for dynamic driving. MX1 and MX2 are the common pole drive signal output terminals of the display. The timing waveforms of MX1 and MX2 during dynamic scanning are shown in the figure.