PEEL™ 22CV10AZ
6 of 10
0.001
0.01
0.1
1
10
100
0.001
0.01
0.1
1
10
Frequency in MHz
22CV10AZ Frequency vs. ICC
Zero Power Feature
The
CMOS PEEL™22CV10AZ
features “Zero-Power”
standby operation for ultra-low power consumption. With
the “Zero-Power” feature, transition-detection circuitry mon-
itors the inputs, I/Os (including CLK) and feedbacks. If
these signals do not change for a period of time greater
than approximately two tPDs, the outputs are latched in their
current state and the device automatically powers down.
When the next signal transition is detected, the device will
“wake up” for active operation until the signals stop switch-
ing long enough to trigger the next power-down.
As a result of the “Zero-Power” feature, significant power
savings can be realized for combinatorial or sequential
operations when the inputs or clock change at a modest
rate (see Figure 23).
Figure 23 Typical ICC vs. Input Clock
Frequency for the 22CV10AZ.
Design Security
The PEEL™22CV10AZ provides a special EEPROM secu-
rity bit that prevents unauthorized reading or copying of
designs programmed into the device. The security bit is set
by the PLD programmer, either at the conclusion of the pro-
gramming cycle or as a separate step, after the device has
been programmed. Once the security bit is set it is impossi-
ble to verify (read) or program the PEEL™ until the entire
device has first been erased with the bulk-erase function.
Signature Word
The signature word feature allows a 64-bit code to be pro-
grammed
into
the
PEEL™22CV10AZ
if
the
PEEL™22CV10AZ+ software option is used. The code can
be read back even after the security bit has been set. The
signature word can be used to identify the pattern pro-
grammed into the device or to record the design revision,
etc.
Programming Support
ICT’s JEDEC file translator allows easy conversion of exist-
ing 24 pin PLD designs to the PEEL™22CV10AZ, without
the need for redesign. ICT supports a broad range of popu-
lar third party design entry systems, including Data I/O
Synario and Abel, Logical Devices CUPL and others. ICT
also offers (for free) its proprietary PLACE software, an
easy-to-use entry level PC-based software development
system.
Programming support includes all the popular third party
programmers; Data I/O, Logical Devices, and numerous
others. ICT also provides a low cost development program-
mer system, the PDS-3.
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