UPD66P04B microcontroller equivalent, 4-bit single-chip microcontroller.
* Program memory (one-time PROM) : 1002 × 10 bits
* Data memory (RAM)
* 9-bit programmable timer
* Command execution time
* Stack level
* I/O pins.
where the clock accuracy and stability pose a problem, use the µPD61P34B (ceramic oscillation type).
The information in.
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