LED display and key management chip HT7289B, powerful: SPI interface, 8 digital tube display, supports up to 56 keys, 16 brightness adjustment, and independent frequency of blinking and flashing adjustable batter function keys, etc., see data sheet!

Packet : 79419106ht7289b-v1.2.rar filelist
HT7289B.ASM
HT7289B-DS.pdf

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