Anachip Corp.

www.anachip.com.tw

Rev. 1.0 Dec 16, 2004

6/10

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 monitors the inputs,

I/Os (including CLK) and feedbacks. If these signals do not

the outputs are latched in their current state and the device auto-

matically powers down. When the next signal transition is

detected, the device will “wake up” for active operation until the

signals stop switching long enough to trigger the next power-

down.

As a result of the “Zero-Power” feature, significant power sav-

ings 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.

22CV10AZ Frequency vs. ICC

Design Security

The PEEL™22CV10AZ provides a special EEPROM security bit

that prevents unauthorized reading or copying of designs pro-

grammed into the device. The security bit is set by the PLD pro-

grammer, either at the conclusion of the programming cycle or as a

separate step, after the device has been programmed. Once the

security bit is set it is impossible 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 programmed into the

device or to record the design revision, etc.

Programming Support

Anachip’s JEDEC file translator allows easy conversion of exist-

ing 24 pin PLD designs to the PEEL™22CV10AZ, without the

100

10

1

0.1

need for redesign. Anachip supports a broad range of popular

third party design entry systems, including the Abel-to-PEEL

Arrays fitter software. Anachip also offers (for free) its propri-

etary WinPLACE software, an easy-to-use entry level PC-based

software development system.

Programming support includes all the popular third party pro-

grammers such as BP Microsystems, System General, Logical

Devices, and numerous others.

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0.001

0.001

0.01

0.1

1

10

Frequency in MHz