Patent ID: 7142924

Claim:
An active medical device, in particular an implantable active medical device such as a cardiac pacemaker, defibrillator, cardiovertor and/or multisite device, including: a microprocessor, means for acquiring medical data including Holter data, a first memory, for storing a control software for operating the microprocessor, and a second memory, for storing the acquired medical data, the first and the second memory being, respectively, a first sector and a second sector of a rewritable single common memory component; an interfacing circuit operative to be coupled to said microprocessor and said common memory component; characterized in that: the microprocessor operates on N bits in parallel and said rewritable memory component is organized to store words of 2N bits; said control software is stored in words of 2N bits in the first sector, each one of said words including N bits of operating code forming an instruction for controlling the microprocessor, and n bits of error detection and correction code, with 1≦n≦N, said medical data are formed of elementary data of N bits stored in words of 2N bits in the second sector, each of each said medical data words stored including N bits of high weight, and N bits of low weight; said interfacing circuit selectively operating under microprocessor control to: read or write in parallel N+n bits of a word of the first sector; or read or write N bits of low weight of a word of the second sector, or read or write N bits of high weight of a word of the second sector.