HT46RU232 mcu equivalent, a/d type 8-bit otp mcu.
* Operating voltage: fSYS=4MHz: 2.2V~5.5V fSYS=8MHz: 3.3V~5.5V * 40 bidirectional I/O lines (max.) * 1 interrupt input shared with an I/O line * One 8-bit.
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