The HD6802P is a 6802 MPU (Microprocessor with Clock and RAM), DIP-40 Package. MC6802 is a monolithic 8-bit microprocessor that contains all the registers and accumulators of the present HD6800 plus an internal clock oscillator and driver on the same chip. In addition, the HD6802 has 128 bytes of RAM on the chip located at hex addresses 0000 to 007F. These are used on many pinball and video arcade games. This 6802 MPU can replace any of the following: Williams 5A-9150, 5400-09150-00, MC6802P, 6802, MC6808, 6808 and many others. Some of them are NOS and others are completely refurbished but all our MPU / CPU chips are 100% tested to make sure you have the best quality parts.