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EPM7256AE 数据表(PDF) 15 Page - Altera Corporation |
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EPM7256AE 数据表(HTML) 15 Page - Altera Corporation |
15 / 64 page Altera Corporation 15 MAX 7000A Programmable Logic Device Data Sheet SameFrame Pin-Outs MAX 7000A devices support the SameFrame pin-out feature for FineLine BGA packages. The SameFrame pin-out feature is the arrangement of balls on FineLine BGA packages such that the lower-ball- count packages form a subset of the higher-ball-count packages. SameFrame pin-outs provide the flexibility to migrate not only from device to device within the same package, but also from one package to another. A given printed circuit board (PCB) layout can support multiple device density/package combinations. For example, a single board layout can support a range of devices from an EPM7128AE device in a 100-pin FineLine BGA package to an EPM7512AE device in a 256-pin FineLine BGA package. The Altera design software provides support to design PCBs with SameFrame pin-out devices. Devices can be defined for present and future use. The software generates pin-outs describing how to lay out a board to take advantage of this migration (see Figure 7). Figure 7. SameFrame Pin-Out Example Designed for 256-Pin FineLine BGA Package Printed Circuit Board 100-Pin FineLine BGA Package (Reduced I/O Count or Logic Requirements) 256-Pin FineLine BGA Package (Increased I/O Count or Logic Requirements) 100-Pin FineLine BGA 256-Pin FineLine BGA |
类似零件编号 - EPM7256AE |
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类似说明 - EPM7256AE |
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