UPD8021 microcomputer equivalent, single chip 8-bit microcomputer.
usually found in external peripherals. The IlPD8021 contains: 1K x 8 bits of mask ROM program memory, 64 x 8 bits of RAM data memory, 21 I/O lines, an B-bit interval time.
The NECIlPD8021 is a stand alone 8-bit parallel microcomputer incorporating the following features usually found in external peripherals. The IlPD8021 contains: 1K x 8 bits of mask ROM program memory, 64 x 8 bits of RAM data memory, 21 I/O lines, an.
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