ATF1504BE ATMEL Corporation, ATF1504BE Datasheet - Page 9

• Manufacturer Part Number: ATF1504BE
• Description: High Speed CPLD
• Manufacturer: ATMEL Corporation

2.2
2.3
2.4
2.5
3637A–PLD–11/06
Schmitt Trigger
Output Drive Capability
I/O Bank
I/O Standard
The Input Buffer of each input and I/O pin has an optional schmitt trigger setting. The schmitt
trigger option can be used to buffer inputs with slow rise times.
Each output has a high/low drive option. The low drive option (slow slew rate) can be used to
reduce system noise by slowing down outputs that do not need to operate at maximum speed or
drive strength. Outputs default to high drive strength by Atmel software and can be set to low
drive strength through the slew rate option.
The I/O pins of the ATF1504BE are grouped into two banks, Bank A and Bank B. Bank A com-
prises of I/O pins for macrocells 1 to 32 (Logic Block A and B), and it is powered by V
B comprises of I/O pins for macrocells 33 to 64 (Logic Block C and D), and it is powered by
V
The ATF1504BE supports a wide range of I/O standards which include LVTTL, LVCMOS33,
LVCMOS25 and LVCMOS18. The I/O pins of the ATF1504BE can also be individually config-
ured to support SSTL-2 (Class I and II) and SSTL-3 (Class I and II) advanced I/O standards as
well as HSTL input standard.
CCIOB
. This allows the ATF1504BE to be used from voltage level translation.
ATF1504BE
CCIOA
. Bank
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