Lattice ISPPAC-POWR1014-01TN48I

A general-purpose power-supply monitor and sequence controller, incorporating both in-system programmable logic and in-system programmable analog functions implemented in non-volatile E²CMOS technology. The device provides 10 independent analog input channels to monitor up to 10 power supply test points. Each input channel has two independently programmable comparators to support high/low and in-bounds/out-of-bounds (window-compare) monitor functions. Four general-purpose digital inputs are also provided for miscellaneous control functions. It provides 14 open-drain digital outputs for controlling DC-DC converters, low-drop-out regulators (LDOs) and optocouplers, as well as for supervisory and general-purpose logic interface functions. Two outputs (HVOUT1 - HVOUT2) may be configured as high-voltage MOSFET drivers. In high-voltage mode, these outputs can provide up to 12 V for driving the gates of n-channel MOSFETs and be used as high-side power switches controlling the supplies with a programmable ramp rate for both ramp up and ramp down. It incorporates a 24-macrocell CPLD for implementing complex state machine sequencing for multiple power supplies and combinatorial logic functions. The status of comparators on analog input channels and general-purpose digital inputs are used as inputs by the CPLD array, and all digital outputs may be controlled by the CPLD. Four independently programmable timers can create delays and time-outs from 32 μs to 2 seconds. The CPLD is programmed using LogiBuilder, an easy-to-learn language integrated into the PAC-Designer software. Control sequences are written to monitor the status of analog input channel comparators or digital inputs. The on-chip 10-bit A/D converter monitors the Vₘₒₙ voltage through the I²C bus or JTAG interface. The I²C bus/SMBus interface allows an external microcontroller to measure voltages connected to the Vₘₒₙ inputs, read back the status of each Vₘₒₙ comparator and PLD outputs, control logic signals IN2 to IN4 and control the output pins (ispPAC-POWR1014A only). The JTAG interface can read out all I²C registers during manufacturing.

• Monitor and control multiple power supplies:
  • Simultaneously monitors up to 10 power supplies
  • Provides up to 14 output control signals
  • Programmable digital and analog circuitry
• Embedded PLD for sequence control:
  • 24-macrocell CPLD implements both state machines and combinatorial logic functions
• Embedded programmable timers:
  • Four independent timers
  • 32 μs to 2 second intervals for timing sequences
• Analog input monitoring:
  • 10 independent analog monitor inputs
  • Two programmable threshold comparators per analog input
  • Hardware window comparison
  • 10-bit ADC for I²C monitoring (ispPACPOWR1014A only)
• High-voltage FET drivers:
  • Power supply ramp up/down control
  • Programmable current and voltage output
  • Independently configurable for FET control or digital output
• 2-Wire (I2C/SMBus Compatible) Interface:
  • Comparator status monitor
  • ADC readout
  • Direct control of inputs and outputs
  • Power sequence control
  • Only available with ispPAC-POWR1014A
• 3.3 V operation, wide supply range 2.8 V to 3.96 V:
  • Industrial temperature range: -40°C to +85°C
  • 48-pin TQFP package, lead-free option
• Multi-Function JTAG Interface:
  • In-system programming
  • Access to all I²C registers
  • Direct input control