HT46R74D-1 Datasheet, Holtek Semiconductor

* Operating voltage:
* Integrated RC or crystal oscillator
* Power-down and wake-up functions reduce power fSYS = 4MHz: 2.2V~5.5V fSYS = 8MHz: 3.3V~5.5V
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that interface directly to analog signals, such as those from sensors. The advantages of low power consumption, I/O flex.