PAC-POWR1220AT8-HS-EVN Lattice, PAC-POWR1220AT8-HS-EVN Datasheet - Page 16

• Manufacturer Part Number: PAC-POWR1220AT8-HS-EVN
• Description: Supervisory Circuits Pwr Mgr Hercules Std Development Kit
• Manufacturer: Lattice
• Series: ispPAC®, MachXO, Herculesr

Specifications of PAC-POWR1220AT8-HS-EVN

• Silicon Manufacturer: Lattice Semiconductor
• Kit Application Type: Power Management
• Application Sub Type: Power Manager
• Kit Contents: Preloaded Board, Eval Board, AC Adapter, USB Connector Cable
• Rohs Compliant: Yes
• Main Purpose: Power Management, ORing Controller / Hot Swap Controller
• Embedded: Yes, Other
• Utilized Ic / Part: ispPAC-POWR1220AT8, LCMXO2280
• Primary Attributes: -
• Secondary Attributes: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Lattice Semiconductor
Figure 1-8. (a) Power Supply Voltage Ramp-up and Ramp-down Waveform and the Resulting Comparator
Output, (b) Corresponding to Upper and Lower Trip Points
During power supply ramp-up the comparator output changes from logic 0 to 1 when the power supply voltage
crosses the upper trip point (UTP). During ramp down the comparator output changes from logic state 1 to 0 when
the power supply voltage crosses the lower trip point (LTP). To monitor for over voltage fault conditions, the UTP
should be used. To monitor under-voltage fault conditions, the LTP should be used.
Tables 1 and 2 show both the under-voltage and over-voltage trip points, which are automatically selected in soft-
ware depending on whether the user is monitoring for an over-voltage condition or an under-voltage condition.
Comparator Logic Output
UTP
1-16
LTP
ispPAC-POWR1220AT8 Data Sheet
(a)
(b)