SEMICONDUCTOR DEVICE AND CELLULAR PHONE USING THE SAME

摘要

A semiconductor device (100) is provided with a processor part (110) having an internal CPU (113), an internal interface part (130), an external interface part (140) for connecting with an external CPU (201) through an interface unit (143), a plurality of processing circuits (121-126) and a connection control circuit (180). The internal interface part (130) is provided with a first bus (191) connected with the internal CPU (113), a second bus (192) connected with the external CPU (201) through the interface unit (143), and selection circuits (131-136) which select each connection of the plurality of circuits (121-126) with the first bus (191) or the second bus (192). Selection by the selection circuits (131-136) is controlled by the connection control circuit (180), following a command from the internal CPU (113) or the external CPU (201). Each of the processing circuits (121-126) can be controlled by the internal CPU (113) or the external CPU (201).