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SK-RT4K-CG1272-KITBTM;中文规格书,Datasheet资料


Application Note AC341

CCGA to CLGA Adapter Socket
Introduction
RTAX-S/SL is Actel's next generation, designed-for-space, metal-to-metal antifuse field programmable gate array (FPGA) family. RTAX-S/SL is a derivative of the Axcelerator? family with up to two millionsystem gates. RTAX-S/SL FPGAs provide the designer with nearly 500K ASIC gates and embedded static RAM. Actel offers RTAX-S/SL devices in two package styles: the Ceramic Column Grid Array (CCGA or CG) and Ceramic Quad Flat Pack (CQFP or CQ). Actel has developed prototyping methods for RTAX-S/SL devices in CCGA and CQFP packages, using the Ceramic Land Grid Array (LGA) package as a prototyping vehicle with the CQ to LG and CG to LG adapter sockets. This document describes the procedure for assembling the CG to LG adapter socket.

CG to LG Adapter Socket
The CG to LG adapter socket has an LG configuration on the top and a CG configuration on the bottom. The adapter socket enables customers to use an LG package during prototyping, and then switch to an equivalent CG package for production. There is one CG to LG adapter socket available. The top and bottom ordering part numbers are listed in Table 1. Table 1 ? Adapter Socket Part Number Adapter Socket CG1272 to LG1272 Ordering Part Number SK-RT4K-KITTOP SK-RT4K-CG1272-KITBTM Prototyped and Prototype Device For prototyping RTAX4000S/SL-CG1272 using RTAX4000S/SL-LG1272 package

Figure 1 shows the complete CG1272 to LG1272 assembly kit. SK-RT4K-KITTOP contains an interposer (3), a socket lid (4), and eight screws (5). SK-RT4K-CG1272-KITBTM contains a ceramic adapter (1), which is an unique adapter for RTAX4000S/SL, socket housing (2), and eight screws (5).

Figure 1 ? Parts of CG1272 to LG1272 Adapter Socket (1) Ceramic Adapter, (2) Socket Housing, (3) Socket Lid, (4) Socket Interposer, (5) Fixing Screws

August 2010 ? 2010 Actel Corporation

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CCGA to CLGA Adapter Socket Figure 2 shows the top view, bottom view, and orientation view of the RTAX4000S/SL CG1272 to LG1272 adapter.

Figure 2 ? RTAX4000S/SL CG1272 to LG1272 Ceramic Adapter Top View, Bottom View and Orientation Drawing

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CG to LG Adapter Socket Assembly Procedure

CG to LG Adapter Socket Assembly Procedure
Step 1
Solder column attachment to ceramic adapter. Note: Do NOT reflow the adapter to the circuit board until the housing has been attached, as detailed in Step 2 below.

Figure 3 ? CG1272 to LG1272 Adapter Solder Column Attachment

Step 2
Assemble socket housing to adapter. A torque limit screw driver is not required (Figure 4).

Figure 4 ? Assemble Socket Housing to CG1272 to LG1272 Adapter Note: The housing, eight screws, and ceramic adapter form the –KITBTM assembly.

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CCGA to CLGA Adapter Socket

Step 3
Reflow the adapter to the printed circuit board (PCB) as shown in (Figure 5). Note: Since reflow profiles depend upon the size of the board and its components, perform reflow process optimization for better results.

Figure 5 ? Reflow Adapter (with socket housing mounted) to PCB

Step 4
Place the socket interposer into the adapter (Figure 6).

Figure 6 ? Place the Socket Interposer into Adapter Assembly

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CG to LG Adapter Socket Assembly Procedure

Step 5
Place the LG1272 package into the adapter (Figure 7).

Figure 7 ? Place LG1272 Package into Adapter Assembly

Step 6
Place and tighten the socket lid to the socket housing with the remaining eight screws (Figure 8). A torque limit screw diver is not required.

Figure 8 ? Place and Tighten Socket Lid Using Eight Screws and Optional Alignment Pins

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CCGA to CLGA Adapter Socket

CG1272 to LG1272 Adapter Socket Outline Drawing

Figure 9 ? CG1272 to LG1272 Adapter Socket Outline Drawing (unit: mm)

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Reflow Profile

Reflow Profile
Since reflow profile depends upon the size of the board and other components, end users should perform additional fine tuning from the general profile, as shown in Figure 10.

250
Maximum Package Body Temperature = 220?C (±5?C) 220?C: 30 seconds maximum

200

180?C 1?C to 3?C per second

150 Temperature (?C)

125

?C t

0?C o 18

1?C to 4?C per second

100

Keep temperature above 183?C (solder melting point) for at least 60 seconds

50

120 seconds minimum

0
1?C to 3?C per second

50

100

150 Time (seconds)

200

250

300

Figure 10 ? Sample Temperature Profile for I/R or Convection Reflow Note: This temperature profile guideline is for reference only.

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CCGA to CLGA Adapter Socket

CCGA to LG1272 Adapter Pin Mapping List
The CG1272 to LG1272 adapter is same number pad connection routing. For example, LG1272 A1 connects to CG1272 A1, LG1272 A2 connects to CG1272 A2, and so on. Table 2 ? CCGA to LG1272 Adapter Pin Mapping List Adapter Socket Ordering Part Number Prototyped and Prototype Device For prototyping RTAX4000S/SL-CG1272 using RTAX4000S/SL-LG1272 package Adapter Pin Mapping List Document Number N/A

CG1272 to SK-RT4K-KITTOP and LG1272 SK-RT4K-CG1272KITBTM

Prototyped Product, Adapter, and PCB Design Matrix
Designing the PCB for a specific product requires an understanding of which adapter socket will work. Each adapter socket is routed differently based on the corresponding Axcelerator device (or its radiationtolerant equivalent derivative that is being prototyped) and the commercial Axcelerator FG package used for prototyping. Table 3 shows the combinations that will work. Table 3 ? Prototyped Product, Adapter, and PCB Design Matrix Prototyped Product RTAX4000S/SL-CG1272 Adapter Part Number SK-RT4K-KITTOP and SK-RT4K-CG1272-KITBTM Prototype Vehicle RTAX4000S/SLLG1272 PCB Design RTAX4000S/SL-CG1272

Support
Visit Technical Support online at www.actel.com/kb/search.aspx. Email Technical Support at tech@actel.com Call Technical Support 7:00 A.M. to 6:00 P.M Pacific Time, Monday through Friday: (800) 262-1060 or 650-318-4460.

List of Changes
The following table lists critical changes that were made in the current version of the document. Revision Revision 1 (August 2010) Changes In the "Introduction" section, the phrase "with error detection and correction (EDAC) protected" [static RAM] was deleted and replaced with "embedded." The following figures were replaced (27425): Figure 1 ? Parts of CG1272 to LG1272 Adapter Socket Figure 2 ? RTAX4000S/SL CG1272 to LG1272 Ceramic Adapter Figure 5 ? Reflow Adapter (with socket housing mounted) to PCB Figure 9 ? CG1272 to LG1272 Adapter Socket Outline Drawing (unit: mm) 1 2 4 6 Page 1

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Actel is the leader in low power FPGAs and mixed signal FPGAs and offers the most comprehensive portfolio of system and power management solutions. Power Matters. Learn more at www.actel.com.
Actel Corporation
2061 Stierlin Court Mountain View, CA 94043-4655 USA Phone 650.318.4200 Fax 650.318.4600

Actel Europe Ltd.
River Court,Meadows Business Park Station Approach, Blackwater Camberley Surrey GU17 9AB United Kingdom Phone +44 (0) 1276 609 300 Fax +44 (0) 1276 607 540

Actel Japan
EXOS Ebisu Buillding 4F 1-24-14 Ebisu Shibuya-ku Tokyo 150 Japan Phone +81.03.3445.7671 Fax +81.03.3445.7668 http://jp.actel.com

Actel Hong Kong
Room 2107, China Resources Building 26 Harbour Road Wanchai, Hong Kong Phone +852 2185 6460 Fax +852 2185 6488 www.actel.com.cn

? 2010 Actel Corporation. All rights reserved. Actel, Actel Fusion, IGLOO, Libero, Pigeon Point, ProASIC, SmartFusion and the associated logos are trademarks or registered trademarks of Actel Corporation. All other trademarks and service marks are the property of their respective owners.

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分销商库存信息:
MICROSEMI SK-RT4K-CG1272KITBTM


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