a built-in PLL and LCD drivers. The CPU has 4 bit parallel addition and subtraction
instructions (e. g. , AI, SI), logic operation instructions (e. g. , OR,
AND), composite judging and compare instructions (e. g. , TM, SL),
and time-base functions. The package is an pin 80, 0.5-mm-pitch quad flat pack package. In addition to various input/output ports and a dedicated
key-input port, which are controlled by powerful input/output
instructions (IN 1 to 3, OUT 1 to 3), there are many dedicated
LC.