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The Lattice ispPAC-POWR1208P1 incorporates both insystem programmable logic and in-system programmable analog circuits to perform special functions forpower supply sequencing and monitoring. The ispPACPOWR1208P1 device has the capability to be configured through software to control up to eight outputs for power supply sequencing and 12 comparators monitoring supply voltage limits, along with four digital inputs for interfacing to other control circuits or digital logic. Once configured, the design is downloaded into the device through a standard JTAG interface. The circuit configuration and routing are stored in non-volatile E 2CMOS.PAC-Designer,®an easy-to-use Windows-compatible software package gives users the ability to design and simulate logic and sequences that control the power supplies or FET driver circuits. The user has control over timing functions, programmable logic functions and comparator threshold values as well as I/O configurations.
POWR1208P1 Maximum Ratings
Symbol
Parameter
Min. Max.
Units
VDD
Core supply voltage at pin
-0.5 6.0
V
VDDINP1
Digital input supply voltage for IN1-IN4
-0.5 6.0
V
HVOUTmax
HVOUT pin voltage, max = VDD+ 9V
-0.5 15
V
VIN2
Input voltage applied, digital inputs
-0.5 6.0
V
VMON
Input voltage applied, VMONvoltage monitor inputs
-0.5 7.0
V
VTRI
Tristated or open drain output, external voltage applied (CLKpin 26 pull-upVDD).
-0.5 6.0
V
TS
Storage temperature
-65 150
TA
Ambient temperature with power applied
-55 125
TSOL
Maximum soldering temperature (10 sec. at 1/16 in.)
- 260
1. VDDINP is the supply pin that controls logic inputs IN1-IN4 only. Place 0.1F capacitor to ground and supply the V DDINP pin with appropriate supply voltage for the given input logic range. 2. Digital inputs are tolerant up to 5.5V, independent of the V DDINP voltage. Pin Descriptions (Continued) Number Name Pin Type Description
POWR1208P1 Features
• Simultaneously monitors up to 12 power supplies • Sequence controller for power-up conditions • Provides eight output control signals • Programmable digital and analog circuitry