MAX?devices are programmable logic devices (PLDs), based on the Altera?Multiple Array MatriX (MAX) architecture that and supports the IEEE Std. 1149.1 Joint Test Action Group (JTAG) interface. MAX devices are also in-system programmable, which adds programming flexibility and provides benefits in many phases of product development, manufacturing, and field use. This application note provides background information on in-system programmability (ISP) and the IEEE Std. 1149.1 JTAG interface and discusses the advantages of using ISP-capable MAX devices.……