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Overview
TM1668 is a keyboard scanning interface with the LED (light-emitting diode display) drive control dedicated circuit, the internal set Into a MCU digital interface, data latch, LED high-voltage drive, keyboard scanning and other circuits. The product performance is excellent, quality reliable. Mainly used in VCR, VCD, DVD and home theater products such as the display driver. Using SOP24, SSOP24, SKDIP24, SDIP24 package.

FEATURE Description
► Using a power CMOS process
► Display mode (10 segments × 7 bits to 13 segments × 4 digits)
► Key scan (10 × 2bit)
► Brightness adjustment circuit (duty cycle adjustable 8)
► Serial interface (CLK, STB, DIO)
► Oscillation mode: built-in RC oscillation (450KHz + 5%)
► Built-in power-on reset circuit
► Package: SOP24, SSOP24, SKDIP24, SDIP24