The Lattice ispPAC-POWR604 incorporates both insystem programmable logic and in-system programmable analog circuits to perform special functions for power supply sequencing and monitoring. The ispPACPOWR604 device has the capability to be configured through software to control up to four outputs for power supply sequencing and six comparators monitoring supply voltage limits, along with four digital inputs for interfacing to other control circuits or digital logic. Once configured, the design is downloaded into the device through a standard JTAG interface. The circuit configuration and routing are stored in non-volatile E2CMOS. PAC-Designer, an easy-to-use Windows-compatible software package, gives users the ability to design the logic and sequences that control the power supplies or regulator circuits. The user has control over timing functions, programmable logic functions and comparator threshold values as well as I/O configurations.