ATF1502AS ATMEL [ATMEL Corporation], ATF1502AS Datasheet - Page 13

• Manufacturer Part Number: ATF1502AS
• Description: High Performance E2PROM CPLD
• Manufacturer: ATMEL [ATMEL Corporation]

PCI Compliance
The ATF1502AS also supports the growing need in the
industry to support the new Peripheral Component Inter-
connect (PCI) interface standard in PCI-based designs and
specifications. The PCI interface calls for high current driv-
ers which are much larger than the traditional TTL drivers.
In general, PLDs and FPGAs parallel outputs to support the
PCI Voltage-to-Current Curves for +5V Signaling in Pull-Up Mode
PCI Voltage-to-Current Curves for +5V Signaling in Pull-Down Mode
VCC
VCC
2.4
1.4
0.55
2.2
-2
3.6
DC
drive point
DC
drive point
AC drive
AC drive
point
point
Pull Down
Pull Up
-44
95
Current (mA)
high current load required by the PCI interface. The
ATF1502AS allows this without contributing to system
noise while delivering low output to output skew. Having a
programmable high drive option is also possible without
increasing output delay or pin capacitance. The PCI electri-
cal characteristics appear on the next page.
Current (mA)
Test Point
-178
380
Test Point
13