MSM6051 microcontroller equivalent, built-in melody circuit and lcd driver 4-bit microcontroller.
* Low power consumption
* Internal ROM : 2560 ¥ 14 bits
* Internal RAM : 120 ¥ 4 bits
* Input port : 2 ports ¥ 4 bits, 1 port ¥ 1 bit
* Output port : .
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