Patent ID: 8649858

Claim:
An implantable stimulator device, comprising: an integrated circuit comprising a plurality of functional blocks, wherein the functional blocks comprise one or more first blocks selected from the group consisting of (i) an analog-to-digital converter, (ii) telemetry circuitry configured to communicate with a device external to the implantable stimulator device, and (iii) battery charging circuitry configured to charge a battery in the implantable stimulator device, stimulation circuitry configured to provide stimulation pulses to at least one tissue-stimulating electrode coupled to the stimulation circuitry, and an interrupt controller configured to receive interrupts issued by one or more of the first blocks and to receive an interrupt issued by the stimulation circuitry; and a digital bus directly connected to each of the functional blocks, wherein the functional blocks communicate with each other via a bus protocol, and wherein the interrupts are not communicated on the digital bus.