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ATF1502ASV-15AI44 Datasheet(PDF) 10 Page - ATMEL Corporation |
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ATF1502ASV-15AI44 Datasheet(HTML) 10 Page - ATMEL Corporation |
10 / 22 page 10 ATF1502ASV 1615H–PLD–2/04 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. Notes: 1. For slow slew outputs, add tSSO. 1. Pin or product term. Power-down AC Characteristics(1)(1) Symbol Parameter -15 -20 Units Min Max Min Max t IVDH Valid I, I/O before PD High 15 20 ns t GVDH Valid OE (1) before PD High 15 20 ns tCVDH Valid Clock (1) before PD High 15 20 ns tDHIX I, I/O Don’t Care after PD High 25 30 ns tDHGX OE (1) Don’t Care after PD High 25 30 ns tDHCX Clock (1) Don’t Care after PD High 25 30 ns t DLIV PD Low to Valid I, I/O 1 1 µs t DLGV PD Low to Valid OE (1) 11 µs tDLCV PD Low to Valid Clock (1) 11 µs tDLOV PD Low to Valid Output 1 1 µs Absolute Maximum Ratings* Temperature Under Bias .................................. -40°C to +85°C *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 V CC + 0.75V DC, which may overshoot to 7.0V for pulses of less than 20 ns. 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) |
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