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AM29245EH 数据表(PDF) 4 Page - Advanced Micro Devices |
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AM29245EH 数据表(HTML) 4 Page - Advanced Micro Devices |
4 / 36 page P R E L I M I N A R Y 4 Am29240 EH Microcontroller Series ™ GENERAL DESCRIPTION The Am29240EH microcontroller series is an enhanced bus-compatible extension of the Am29200 ™ RISC mi- crocontroller family, with two to four times the perfor- mance. The Am29240EH microcontroller series includes the Am29240EH microcontroller, the low-cost Am29245EH microcontroller, and the Am29243EH data microcontroller. The on-chip caches, MMU, faster inte- ger math, and extended DMA addressing capability of the Am29240EH microcontroller series allow the em- bedded systems designer to provide increasing levels of performance and software compatibility throughout a range of products (see Table 1 on page 6). Based on a low-voltage CMOS-technology design, these devices offer a complete set of system peripherals and interfaces commonly used in embedded applica- tions. Compared to CISC processors, the Am29240EH microcontroller series offers better performance, more efficient use of low-cost memories, lower system cost, and complete design flexibility for the designer. Coupled with hardware and software development tools from the AMD Fusion29K r partners, the Am29240EH microcon- troller series provides the embedded product designer with the cost and performance edge required by today’s marketplace. For a complete description of the technical features, on- chip peripherals, programming interface, register set, and instruction set, please refer to the Am29240EH, Am29245EH, and Am29243EH RISC Microcontrollers User’s Manual (order #17741). Am29240EH Microcontroller For general-purpose embedded applications, such as mass-storage controllers, communications, digital sig- nal processing, networking, industrial control, pen- based systems, and multimedia, the Am29240EH microcontroller provides a high-performance solution with a low total-system cost. The memory interface of the Am29240EH microcontroller provides even faster direct memory access than the Am29200 microcontrol- ler. This performance improvement minimizes the effect of memory latency, allowing designers to use low-cost memory with simpler memory designs. On-chip instruc- tion and data caches provide even better performance for time-critical code. Other on-chip functions include: a ROM controller, DRAM controller, peripheral interface adapter control- ler, DMA controller, programmable I/O port, parallel port controller, serial ports, and an interrupt controller. Am29245EH Microcontroller The low-cost Am29245EH microcontroller is designed for embedded applications in which cost and space constraints, along with increased performance require- ments, are primary considerations. The Am29245EH microcontroller also provides an easy upgrade path for Am29200, Am29202 ™, and Am29205 ™ microcontroller-based products. Am29243EH Microcontroller With DRAM parity support and a full MMU, the Am29243EH data microcontroller is recommended for communications applications that require high-speed data movement and fast protocol processing in a fault- tolerant environment. Both the Am29243EH and Am29240EH microcontrol- lers support fly-by DMA at 100 Mbytes/s for LANs and switching applications, and a two-cycle Multiply Accu- mulate function for DSP applications. The low power re- quirements make either microcontroller a good choice for field-deployed devices. Development Support Products The Fusion29K Program of Partnerships for Application Solutions provides the user with a vast array of products designed to meet critical time-to-market needs. Prod- ucts/solutions available from the AMD Fusion29K part- ners include the following: Optimizing compilers for common high-level languages Assembler and utility packages Source- and assembly-level software debuggers Target-resident development monitors Simulators Execution boards Hardware development tools Silicon products Board-level products Laser-printer solutions Multiuser, kernel, and real-time operating systems Graphics solutions Networking and communication solutions Manufacturing support Custom software consulting, support, and training |
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类似说明 - AM29245EH |
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