ATF1502ASV(2004) Просмотр технического описания (PDF) - Atmel Corporation

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ATF1502ASV
(Rev.:2004)

High performance EEPROM CPLD

Atmel Corporation 

Power-down Mode

The ATF1502ASV includes an optional pin-controlled power-down feature. When this

mode is enabled, the PD pin acts as the power-down pin. When the PD pin is high, the

device supply current is reduced to less than 3 mA. During power-down, all output data

and internal logic states are latched and held. Therefore, all registered and combinato-

rial output data remain valid. Any outputs that were in a high-Z state at the onset will

remain at high-Z. 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 inde-

terminate 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.

Power-down AC Characteristics(1)(1)

Symbol Parameter

tIVDH

Valid I, I/O before PD High

tGVDH

tCVDH

Valid OE(1) before PD High

Valid Clock(1) before PD High

tDHIX

I, I/O Don’t Care after PD High

tDHGX

OE(1) Don’t Care after PD High

tDHCX

Clock(1) Don’t Care after PD High

tDLIV

PD Low to Valid I, I/O

tDLGV

tDLCV

PD Low to Valid OE(1)

PD Low to Valid Clock(1)

tDLOV

PD Low to Valid Output

Notes: 1. For slow slew outputs, add tSSO.

1. Pin or product term.

Absolute Maximum Ratings*

Temperature Under Bias.................................. -40°C to +85°C

Storage Temperature ..................................... -65°C to +150°C

Voltage on Any Pin with

Respect to Ground .........................................-2.0V to +7.0V(1)

Voltage on Input Pins

with Respect to Ground

During Programming.....................................-2.0V to +14.0V(1)

Programming Voltage with

Respect to Ground .......................................-2.0V to +14.0V(1)

-15

Min

Max

15

15

15

25

25

25

1

1

1

1

-20

Min

Max

20

20

20

30

30

30

1

1

1

1

Units

ns

ns

ns

ns

ns

ns

µs

µs

µs

µs

*NOTICE:

Stresses beyond those listed under “Absolute

Maximum Ratings” may cause permanent dam-

age to the device. This is a stress rating only and

functional operation of the device at these or any

other conditions beyond those indicated in the

operational sections of this specification is not

implied. Exposure to absolute maximum rating

conditions for extended periods may affect device

reliability.

Note:

1. Minimum voltage is -0.6V DC, which may under-

shoot to -2.0V for pulses of less than 20 ns.

Maximum output pin voltage is VCC + 0.75V DC,

which may overshoot to 7.0V for pulses of less

than 20 ns.

10 ATF1502ASV

1615H–PLD–2/04

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