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EPM240T100C5 参数 Datasheet PDF下载

EPM240T100C5图片预览
型号: EPM240T100C5
PDF下载: 下载PDF文件 查看货源
内容描述: [最大II器件]
分类和应用: 可编程逻辑器件输入元件PC
文件页数/大小: 295 页 / 3815 K
品牌: ALTERA [ ALTERA CORPORATION ]
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11. In-System Programmability  
Guidelines for MAX II Devices  
MII51013-1.7  
Introduction  
As time-to-market pressure increases, design engineers require advanced system-  
level products to ensure problem-free development and manufacturing.  
Programmable logic devices (PLDs) with in-system programmability (ISP) can help  
accelerate development time, facilitate in-field upgrades, simplify the manufacturing  
flow, lower inventory costs, and improve printed circuit board (PCB) testing  
®
®
capabilities. Altera ISP-capable MAX II devices can be programmed and  
reprogrammed in-system via the IEEE Std. 1149.1 Joint Test Action Group (JTAG)  
interface. This interface allows MAX II devices to be programmed and the PCB to be  
functionally tested in a single manufacturing step, saving testing time and assembly  
costs. This chapter describes guidelines you should follow to design successfully with  
ISP, including:  
“General ISP Guidelines” on page 11–1  
“IEEE Std. 1149.1 Signals” on page 11–4  
“Sequential versus Concurrent Programming” on page 11–6  
“ISP Troubleshooting Guidelines” on page 11–7  
“ISP via Embedded Processors” on page 11–9  
“ISP via In-Circuit Testers” on page 11–10  
General ISP Guidelines  
This section provides guidelines that help you design successfully for ISP-capable  
MAX II devices. These guidelines should be used regardless of your specific design  
implementation.  
Operating Conditions  
Each MAX II device has several parametric ratings, or operating conditions, that are  
required for proper operation. Although MAX II devices can exceed these conditions  
when in user mode and still operate correctly, these conditions should not be  
exceeded during in-system programming. Violating any of the operating conditions  
during in-system programming can result in programming failures or incorrectly  
programmed devices. VCCIO of all I/O banks and VCCINT of the device must be fully  
powered up for ISP to function.  
ISP Voltage  
The VCCINT and VCCIO level specified in the device operating conditions table must be  
maintained on the VCCINT and VCCIO pins during in-system programming to ensure that  
the device’s flash cells are programmed correctly. The VCCINT and VCCIO specification  
applies for both commercial- and industrial-temperature-grade devices.  
© October 2008 Altera Corporation  
MAX II Device Handbook