Datasheet Summary
DATA SHEET
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MOS INTEGRATED CIRCUIT
µPD7564A, 7564A(A)
4-BIT SINGLE-CHIP MICROPUTER
DESCRIPTION
The µPD7564A is a 4-bit single-chip microputer with a small number of ports in a small package, which is of low-order models, µPD7554 and 7564 sub-series in the µPD7500 series. With an on-chip serial interface, it performs efficient dispersion processing of a system as a sub-CPU for the 75X series or 78k series. The µPD7564A has outputs to directly drive a triac and LEDs and allows selection among many types of input/ output circuits using their respective mask options, sharply reducing the number of external circuits required. Details of functions are described in the...