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The ProcessorPM (Processor Power Manager) POWR605 monitors up to six circuit board power supplies and provides up to five open-drain digital I/Os. The device can generate signals such as a CPU Reset, including pulse stretching and power supply fault interrupt, using the on-chip 16 macrocell CPLD and four programmable timers. There are also two general-purpose digital inputs, which can be used for other control functions such as manual reset input and watchdog timer input. The ProcessorPM-POWR605 includes a power-down feature, which is ideal for applications with very low standby power requirements. The device can either be powered down using an external logic signal or by an internally generated signal. Once in the powered down state the device draws less than 10μA from the power supply.
Please select a document category from the selection on the left-hand side of this page for more information on ProcessorPM-POWR605. Pre-Configured for Processor SupportThe ProcessorPM-POWR605 is configured by default for 3.3V, 2.5V, and 1.8V supply monitoring, selectable 500ms to 1min WDT, selectable 200ms pulse stretch, and reset/interrupt generation. The POWR605 configuration is pre-programmed by Lattice which makes it immediately applicable to a variety of microprocessor or DSP support scenarios - no programming is required!
 Block Diagram Key Features
Typical ApplicationWhen power is applied to the POWR605, it first checks to see if a power-down pin is active. If the power-down signal is active, then the POWR605 will proceed immediately to the power-down state. After all supplies are stabilized the POWR605 generates a CPU reset signal. The voltage supervisor continuously monitors the power supply bus and interrupts the CPU within 12μs if a fault is detected. This allows the CPU to store critical data before it is affected by the fault.
Reference Designs and Development KitsGet started replacing multiple discrete power management ICs fast with programmable Power Manager Reference Designs and the ProcessorPM Development Kit. The kit is a versatile, ready to use hardware platform for evaluating and designing with ProcessorPM power management devices. The kit is based on a 2.5” x 2” evaluation board that features the ProcessorPM-POWR605 device in a lead-free 24-pin QFN package, a Power Manager II - POWR6AT6, evaluation circuits that emulate a power supply bus and processor interface, and an expansion header. The kit includes a pre-configured processor support demonstration design that will support hundreds of microprocessor, DSP, ASSP, or ASIC power management scenarios. You may extend or modify the pre-configured demo using PAC-Designer software. You can then build your own designs using the free downloadable reference design source code, implementing these features in less than an hour. See Mixed Signal Boards for more Power Manager II Boards.
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