Electronic unit for chip card, has digital processor and digital signal processor connected to flash memory by respective address and data buses, where digital processor controls digital signal processor through third address and data bus

摘要

The unit has a digital processor (1) connected to a flash memory (2) of large capacity by an address and data bus (17). A digital signal processor (3) is connected to the memory by an address and data bus (18). The processor (1) is connected to the processor (3) by an address and data bus (19). The processor (1) controls the processor (3) through the address and data bus (19). The digital processor (1) and the digital signal processor (3) are respectively connected to a latch (4) through digital signals (13, 14) and analog signals (15, 16).