HM1628 - LED Driver
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10 segment output lines, 4 grid output lines, 3 segment/ grid output lines, one display memory, control circuit, key scan circuit
HM1628 Features
* CMOS technology
* Low power consumption
* Multiple display modes (10 segment, 7 grid to 13 segment, 4 grid)
* Key scanning (10 x 2 Matrix)
* 8-step dimming circuitry
* Serial interface for clock, data input, data output, strobe pins
* Built-in RC oscillator: (450KHz±5%)