US 7,463,060 B1
Programmable logic device and method of testing
Trent Whitten, Beaverton, Oreg. (US); and Kam Fai So, Beaverton, Oreg. (US)
Assigned to Lattice Semiconductor Corporation, Hillsboro, Oreg. (US)
Filed on Jun. 13, 2006, as Appl. No. 11/452,714.
Int. Cl. H03K 19/173 (2006.01); H03K 19/177 (2006.01)
U.S. Cl. 326—40  [326/38; 326/46] 16 Claims
OG exemplary drawing
 
1. A programmable logic device, comprising:
a plurality of programmable resources;
non-volatile configuration to store configuration data for configuring the plurality of programmable resources; and
test-override circuitry operable to determine a test mode and selectively operable dependent upon the test mode determination to override by bypassing the configuration data stored in the non-volatile configuration memory and configure at least one of the plurality of programmable resources based on test data of a source different from the configuration data stored in the non-volatile configuration memory.