AT91SAM7S64 datasheet(16/42 Pages) ATMEL

tên linh kiện	AT91SAM7S64

Giải thích chi tiết về linh kiện	AT91 ARM짰 Thumb짰-based Microcontrollers

PDF	42 Pages

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nhà sản xuất	ATMEL [ATMEL Corporation]

Trang chủ	http://www.atmel.com

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16 / 42 page

6175BS–ATARM–04-Nov-05

AT91SAM7S Series Summary

– Prefetch buffer, buffering and anticipating the 16-bit requests, reducing the required

wait states

– Key-protected program, erase and lock/unlock sequencer

– Single command for erasing, programming and locking operations

– Interrupt generation in case of forbidden operation

8.4

Peripheral DMA Controller

• Handles data transfer between peripherals and memories

• Eleven channels: AT91SAM7S256/128/64/321

• Nine channels: AT91SAM7S32

– Two for each USART

– Two for the Debug Unit

– Two for the Serial Synchronous Controller

– Two for the Serial Peripheral Interface

– One for the Analog-to-digital Converter

• Low bus arbitration overhead

– One Master Clock cycle needed for a transfer from memory to peripheral

– Two Master Clock cycles needed for a transfer from peripheral to memory

• Next Pointer management for reducing interrupt latency requirements

AT91SAM7S64 bảng dữ liệu(PDF) 16 Page - ATMEL Corporation