Lattice ISPPAC-POWR605-01SN24I

A general-purpose power-supply monitor, reset generator and watchdog timer, incorporating both in-system programmable logic and analog functions implemented in non-volatile E²CMOS⁽ᴮ⁾ technology. The device provides six independent analog input channels to monitor power supply voltages. Two general-purpose digital inputs are also provided for miscellaneous control functions. It provides up to five open drain digital outputs that can be used for controlling DCDC converters, low-drop-out regulators (LDOs) and optocouplers, as well as for supervisory and general-purpose logic interface functions. The five digital, open drain outputs can optionally be configured as digital inputs to sense more input signals as needed, such as manual reset, etc.

• Precision Programmable Threshold Monitors, Threshold Accuracy 0.7%
  • Simultaneously monitors up to six power supplies
  • Programmable analog trip points 1% step size; 192 steps
  • Programmable glitch filter
  • Power-off detection (75 mV)
• Embedded Programmable Timers
  • Four independent timers
  • 32 μs to 2 second intervals for timing sequences
• Embedded PLD for Logical Control
  • Rugged 16-macrocell CPLD architecture
  • 81 product terms / 28 inputs
  • Implements state machines and combinatorial functions
• Power-Down Mode I₍CC₎ < 10 μA
• Digital I/O
  • Two dedicated digital inputs
  • Five programmable digital I/O pins
• Wide Supply Range (2.64 V to 3.96 V)
  • In-system programmable through JTAG
  • Industrial temperature range: -40 °C to +105 °C
  • 24-pin QFN package, lead-free option

• Power Up/Down Control
  • Controls power to the microprocessor system
  • Generates the CPU reset
  • Monitors critical power supply voltages, generating interrupts whenever faults are detected
  • Provides a watchdog timer function to detect CPU operating and bus timeout errors