Features: • ROM capacity : Program ROM 12 k x 23 bits Character ROM5 x 8 x 128 bits• RAM capacity : Working RAM 256 x 4 bits Display RAM 60 x 8 bits Data RAM 512 x 8 bits• LCD display : 60-segment x 8-common• I/O ports : Buzzer output 1 bit (4 kHz) Key input 7 bits• ...
SM3515: Features: • ROM capacity : Program ROM 12 k x 23 bits Character ROM5 x 8 x 128 bits• RAM capacity : Working RAM 256 x 4 bits Display RAM 60 x 8 bits Data RAM 512 x 8 bits• LCD dis...
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The SM3515 is a CMOS 4-bit single-chip micro-computer for databank incorporating data memory RAM, LCD driver, key input circuits and buzzer out-put circuit. By connecting an external crystal, a 1Hz timer interrupt is made possible for easier clock function.