isppac-powr1220at8 Lattice Semiconductor Corp., isppac-powr1220at8 Datasheet - Page 9

• Manufacturer Part Number: isppac-powr1220at8
• Description: In-system Programmable Power Supply Monitoring, Sequencing And Margining Controller
• Manufacturer: Lattice Semiconductor Corp.

Lattice Semiconductor
Power-On Reset
Figure 1-2. ispPAC-POWR1220ATE Power-On Reset
T
T
T
T
T
V
V
V
C
1. Corresponds to VCCA and VCCD supply voltages.
RST
START
GOOD
BRO
POR
Symbol
TL
TH
T
L
Delay from V
Delay from RESETb HIGH to PLDCLK rising
edge
Power-on reset to valid VMON comparator
output and AGOOD is true
Minimum duration brown out required to trig-
ger RESETb
Delay from brown out to reset state.
Threshold below which RESETb is LOW
Threshold above which RESETb is HIGH
Threshold above which RESETb is valid
Capacitive load on RESETb for master/slave
operation
V
V
V
TH
TL
T
TH
to start-up state
Parameter
Reset
State
T
START
T
RST
Analog Calibration
T
1
1
GOOD
Start Up
1
State
Conditions
1-9
T
T
BRO
POR
ispPAC-POWR1220AT8 Data Sheet
Min.
2.5
2.7
0.8
1
RESETb
MCLK
PLDCLK
AGOOD (Internal)
VCC
Typ.
5
Max.
100
200
2.3
10
13
5
Units
ms
pF
µs
µs
µs
µs
V
V
V