LC74789M controller equivalent, on-screen display controller.
* Display format: 24 characters by 12 rows (Up to 288 characters)
* Character format: 12 (horizontal) × 18 (vertical) dots
* Character sizes: Three sizes each.
must be especially cautious about noise when using the XtalIN input pin in clock input mode.
No. 5732-4/23
LC74789, 74.
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