Description
MC6821P or HD6821P are a (NOS) Motorola / Hitachi PIA in a DIP-40 Package. MC6821 Peripheral interface adapter (PIA) provides the universal means of interfacing peripheral equipment to the M6800 family of microprocessors. These are almost impossible to find NOS anymore and usually they are used or counterfeit in the market, but we also test all of our stock to make sure they work before shipping. These are used in many arcade and pinball applications such as Bally AS-2518-17 and AS-2518-35 MPU and many other applications that use this chip.
CharlieG (verified owner) –
Works great in my Williams sound board.
Jan Svach (verified owner) –
They do work fine.
64b1t (verified owner) –
Worked great for fixing a random comma displaying on the scoreboard of a Williams Whirlwind