Circuitry and method for sharing internal microcontroller memory with an external processor
US5428760A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 1992 |
| Grant date | Jun 27, 1995 |
| Priority date | — |
| Expiry date | Feb 6, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F15/17
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and circuitry for sharing a memory space of a microcontroller with a processor. The memory space corresponds to a random access memory accessible by the microcontroller. The memory space includes random access memory on a same substrate as the microcontroller. The processor is located on a different substrate from the microcontroller. The circuitry includes a slave port for communicating data between the processor and the microcontroller. The slave port receives a logical address and a control signal from the processor. The slave port generates an interrupt signal in response to the control signal. An interrupt server generates memory control signals in response to the interrupt signal. A memory controller reads data from and writes data to the slave port and a memory location associated with the logical address in response to the memory control signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.