在ABEL和CUPL高級描述語言中使用 ATV750和ATV

This application note describes how to
use the features of the ATV750 and
ATV750B in the ABEL (and Atmel-
ABEL) and CUPL (and Atmel-CUPL)
high level description languages. The
ATV750 and ATV750B are easy
upgrades from a 22V10. They offer twice
the logic density and more flexibility in
the same footprint. Both devices have 20
registers and individual clock and AR
product terms for each register. Each I/O
pin has a programmable polarity control
and an individual output enable product
term. Independent feedback paths from
each register allow all of the registers to
be buried without wasting the I/O pins.
For the ATV750B the registers can also
be configured as D- or T-type and the
clock can be selected as either a synchronous
clock pin or a clock product
term. The ATV750 and ATV750B macrocell
is shown in Figure 1.