Patent
1997-01-06
1998-09-15
Sheikh, Ayaz R.
395280, G06F 1300
Patent
active
058092595
ABSTRACT:
The invention provides a semiconductor integrated circuit device, which minimizes an increase in the physical and logical size, allows data transfers invoked by a large number of interrupts, and improves the processing efficiency. This semiconductor integrated circuit device is applied to a single chip microcomputer and includes function blocks such as CPU, data transfer controller DTC, ROM, RAMI, RAMP, timer, pulse output circuit, serial communication interface SCI, A/D converter, IOP0-11, interrupt controller, and bus controller BSC. The internal address bus IAB and the internal data bus IDB are connected to CPU, ROM, RAMI and BSC. The internal address bus PAB and the internal data bus PDB are connected to BSC, RAMP, timer, pulse output circuit, SCI, A/D converter, interrupt controller, and IOP0-11. Further, PDB is connected to DTC.
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Hitachi , Ltd.
Sheikh Ayaz R.
Wiley David A.
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