ATF22V10CQ ATMEL [ATMEL Corporation], ATF22V10CQ Datasheet - Page 8

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ATF22V10CQ

Manufacturer Part Number
ATF22V10CQ
Description
Highperformance EE PLD
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet

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Power-down Mode
8
ATF22V10C(Q)
The ATF22V10C includes an optional pin-controlled power-down feature. When this
mode is enabled, the PD pin acts as the power-down pin (Pin 4 on the DIP/SOIC pack-
ages and Pin 5 on the PLCC package). When the PD pin is high, the device supply
current is reduced to less than 100 mA. During power-down, all output data and internal
logic states are latched and held. Therefore, all registered and combinatorial output data
remain valid. Any outputs that were in an undetermined state at the onset of power-
down will remain at the same state. During power-down, all input signals except the
power-down pin are blocked. Input and I/O hold latches remain active to ensure that
pins do not float to indeterminate levels, further reducing system power. The power-
down pin feature is enabled in the logic design file. Designs using the power-down pin
may not use the PD pin logic array input. However, all other PD pin macrocell resources
may still be used, including the buried feedback and foldback product term array inputs.
PD pin configuration is controlled by the design file, and appears as a separate fuse bit
in the JEDEC file. When the power-down feature is not specified in the design file, the
IN/PD pin will be configured as a regular logic input.
Note:
Some programmers list the 22V10 JEDEC compatible 22V10C (no PD used) separately
from the non-22V10 JEDEC compatible 22V10CEX (with PD used).
0735P–PLD–01/02

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