ispPAC-POWR1220AT8-01T100I Lattice, ispPAC-POWR1220AT8-01T100I Datasheet - Page 14

• Manufacturer Part Number: ispPAC-POWR1220AT8-01T100I
• Description: Supervisory Circuits Prec Prg Pwr Spply S eq. Mon. Mrg Trim I
• Manufacturer: Lattice
• Series: ispPAC®r

Specifications of ispPAC-POWR1220AT8-01T100I

• Number Of Voltages Monitored: 12
• Undervoltage Threshold: 0.8 V
• Output Type: Open Collector / Drain
• Manual Reset: Not Resettable
• Watchdog: No Watchdog
• Power-up Reset Delay (typ): 500 ms
• Supply Voltage (max): 3.96 V
• Supply Voltage (min): 2.8 V
• Supply Current (typ): 40 mA
• Mounting Style: SMD/SMT
• Package / Case: TQFP-100
• Applications: General Purpose
• Voltage - Input: -0.3 V ~ 5.9 V
• Voltage - Supply: 2.8 V ~ 3.96 V
• Current - Supply: 40mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: *
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Lattice Semiconductor
Figure 1-5. Verify Timing Diagram
Figure 1-6. Discharge Timing Diagram
Theory of Operation
Analog Monitor Inputs
The ispPAC-POWR1220AT8 provides 12 independently programmable voltage monitor input circuits as shown in
Figure 1-7. Two individually programmable trip-point comparators are connected to an analog monitoring input.
Each comparator reference has 368 programmable trip points over the range of 0.664V to 5.734V. Additionally, a
75mV ‘zero-detect’ threshold is selectable which allows the voltage monitors to determine if a monitored signal has
dropped to ground level. This feature is especially useful for determining if a power supply’s output has decayed to
a substantially inactive condition after it has been switched off.
State
TCK
TMS
State
TCK
TMS
VIH
VIH
VIL
VIL
VIH
VIH
VIL
VIL
Update-IR
Update-IR
t
SU1
t
SU1
t
CKH
t
H
Run-Test/Idle (Erase or Program)
t
CKH
t
SU1
t
H
t
CKL
t
SU1
t
CKL
Run-Test/Idle (Program)
t
H
t
H
t
PWP
t
SU1
t
PWV
Select-DR Scan
t
CKH
t
SU1
t
H
1-14
Select-DR Scan
t
CKH
t
H
ispPAC-POWR1220AT8 Data Sheet
t
SU1
t
HVDIS
(Actual)
t
CKH
t
H
t
SU1
t
Run-Test/Idle (Verify)
SU1
t
CKL
t
Specified by the Data Sheet
t
CKH
CKH
t
Update-IR
H
t
H
t
PWV
t
SU1
t
CKL
t
Actual
SU1
t
PWV
t
CKH
t
H
t
CKH
t
H