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ST90158是什么mcu? |
| 作者：mugenwon 欄目：單片機 |
偶然下載了這個mcu的資料。使用st9內(nèi)核。有哪位高手知道這是什么東東嗎？是不是st公司和at公司的arm9系列唱對臺戲的芯片？？ |
| 2樓： | >>參與討論 |
| 作者： iversonma 于 2006/5/27 13:38:00 發(fā)布：
re \\ 和arm9就不是一個檔次的芯片~~~ The ST9+ Core or CENTRAL Processing Unit (CPU) features a highly optimised instruction set, capable of HANDLING bit, byte (8-bit) and word (16-bit) data, as well as BCD and Boolean formats; 14 addressing modes are available. Four independent buses are CONTROLled by the Core: a 16-bit MEMORY bus, an 8-bit Register data bus, an 8-bit Register address bus and a 6-bit Interrupt/ DMA bus which connects the interrupt and DMA CONTROLlers in the on-chip peripherals with the Core. This multiple bus architecture affords a high degree of pipelining and parallel operation, thus making the ST9+ family devices highly efficient, both for numerical calculation, data HANDLING and with regard to communication with on-chip peripheral resources. which hold data and CONTROL bits for the on-chip peripherals and I/Os. |
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