August 30, 2007 PCN Number: 0713 PCN Change Level: Major Subject: Pin Out Changes for the Fusion Product Family Dear Customer, This PCN provides information on changes in the pin outs for all packages for AFS090, AFS250, AFS600, and AFS1500 devices. Affected devices and packages are listed in Table 1. These pin out changes were made to increase the ESD robustness of the devices. Table 1 • Device Fusion Pin Changes Package QNG108 QNG180 FG256/FGG256 QNG180 AFS250 PQ208/PQG208 FG256/FGG256 PQ208/PQG208 AFS600 FG256/FGG256 FG484/FGG484 FG256/FGG256 AFS1500 FG484/FGG484 FG676/FGG676 AFS090 Old Pin # Old Pin Name New Pin # New Pin Name B25 B29 T14 B29 102 T14 102 T14 AB18 T14 AB18 AD20 VCC33ACAP VCC33ACAP VCC33ACAP VCC33ACAP VCC33ACAP VCC33ACAP VCC33ACAP VCC33ACAP VCC33ACAP VCC33ACAP VCC33ACAP VCC33ACAP B25 B29 T14 B29 102 T14 102 T14 AB18 T14 AB18 AD20 VCC33A VCC33A VCC33A VCC33A VCC33A VCC33A VCC33A VCC33A VCC33A VCC33A VCC33A VCC33A Devices that do not have the pin change, but must update the capacitor value: • • AFS250XW AFS600XX, AFS600XY, AFS600XZ, and AFS600ES (date codes before 0738) Actel Corporation 2061 Stierlin Court, Mountain View, CA 94043 Phone: 650.318.4200 Fax 650.318.4600 For existing board designs, Actel recommends connecting the previous VCC33ACAP pad to the same 3.3 V supply as the VCC33A pads. If customers do not want to change their board, the VCC33ACAP pad can be connected to a 100 pF cap to ground. For all new designs, Actel recommends connecting all VCC33A pads to the same 3.3 V supply. Previous Fusion datasheets (prior to Advanced v0.8 released in June 2007) recommended using VCC33ACAP 1 uF cap to GND. After conducting additional analysis, Actel determined that if the VCC33A power supply ramps up too quickly, then an internal transistor on the device could be stressed. While Actel has not seen this occur on any devices, the recommended capacitor value has been changed to provide more margin for customers. Therefore, to avoid causing permanent damage to the device, Actel strongly recommends that a capacitor of 100 pF be used. The Fusion datasheet will be updated by the end of September 2007 and will be posted at: http://www.actel.com/documents/Fusion_DS.pdf If you have any questions, please contact Actel's Application Technical Support at [email protected]. Regards, Actel Corporation Actel Corporation 2061 Stierlin Court, Mountain View, CA 94043 Phone: 650.318.4200 Fax 650.318.4600