EP220 ALTERA [Altera Corporation], EP220 Datasheet - Page 5

• Manufacturer Part Number: EP220
• Description: Classic EPLDs
• Manufacturer: ALTERA [Altera Corporation]

Altera Corporation
PLD
Compatibility
The XOR gate can implement active-high or active-low logic, and can use
DeMorgan’s inversion to reduce the number of product terms needed to
implement a function.
If the EP220 and EP224 register outputs do not require an OE signal, the
internal product term can hold the output in an enabled state; if a global
OE signal is required, any input can be dedicated to the task, and all eight
product terms can be programmed accordingly.
High-Frequency, Low-Skew Global Clock
EP220 and EP224 devices have extremely low output-pin skew: registered
output skew (t
skew (t
EP220 and EP224 devices ideal for high-frequency system Clock
applications, including Intel Pentium microprocessors, 486-based PCs,
and PCI bus designs.
The EP220 and EP224 devices are a logical superset of most high-speed,
24-pin PAL/GAL devices. Industry-standard JEDEC Files from
compatible devices can be programmed into EP220 or EP224 devices.
Table 1
with EP220 and EP224 devices.
Advanced Micro
Devices
Table 1. EP220- and EP224-Compatible Devices (Part 1 of 4)
PAL/GAL Vendor
OSC
summarizes some of the devices that can be replaced or upgraded
) is typically less than 400 ps. This low output-skew rate makes
OCR
) is typically less than 300 ps; combinatorial output
PAL/GAL Device
PAL16L8
PAL16R8
PALCE16V8
PAL20L8
PAL20R8
PALCE20V8
PAL16L8
PAL16R8
PALCE16V8
PAL20L8
PAL20R8
PALCE20V8
Altera Replacement
EP220 & EP224 Classic EPLDs
EP220-7
EP224-7
EP220-10
EP224-10
Device
Speed
Grade
-10
-7
5