UPD7520 Datasheet | NEC

NEe Microputers, Inc. NEe ,.,.PD7520 4-BIT SINGLE CHIP MICROPUTER DESCR IPTION The j.lPD7520 is a Il-75 4-bit single chip microputer with a Programmable Display Controller capable of directly driving a multiplexed 8-segment, 8-digit LED Display. It has a 768 x 8 ROM, a 48 x 4 RAM, and 24 I/O lines for munication with and control of external circuitry. The j.lPD7520 is manufactured with a lowpower consumption PMOS process, allowing use of a single power supply between -6V and -10V. The j.lPD7520 executes 47 instructions of the j.l-75 instruction set, and is available in a low-cost 28-pin plastic dual-in-line package. FEATU RES - 768 x 8 Bit ROM - 48 x 4 Bit RAM - 20...