ISPPAC-POWR1014A LATTICE [Lattice Semiconductor], ISPPAC-POWR1014A Datasheet - Page 12

• Manufacturer Part Number: ISPPAC-POWR1014A
• Description: In-System Programmable Power Supply Supervisor, Reset Generator and Sequencing Controller
• Manufacturer: LATTICE [Lattice Semiconductor]

Lattice Semiconductor
Figure 4. Verify Timing Diagram
Figure 5. Discharge Timing Diagram
Theory of Operation
Analog Monitor Inputs
The ispPAC-POWR1014/A provides 10 independently programmable voltage monitor input circuits as shown in
Figure 6. Two individually programmable trip-point comparators are connected to an analog monitoring input. Each
comparator reference has 372 programmable trip points over the range of 0.672V to 5.867V. 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
12
Select-DR Scan
t
CKH
t
H
t
SU1
ispPAC-POWR1014/A Data Sheet
t
HVDIS
(Actual)
t
CKH
t
H
t
t
Run-Test/Idle (Verify)
SU1
SU1
t
CKL
t
Specified by the Data Sheet
CKH
t
CKH
t
H
Update-IR
t
H
t
PWV
t
SU1
t
CKL
t
Actual
SU1
t
PWV
t
CKH
t
H
t
CKH
t
H