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AT49LW040 Fiches technique(PDF) 27 Page - ATMEL Corporation |
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AT49LW040 Fiches technique(HTML) 27 Page - ATMEL Corporation |
27 / 34 page 27 AT49LW080/040 1966C–FLASH–03/02 ELECTRICAL CHARACTERISTICS IN A/A MUX MODE: Certain specifications differ from the previous sections, when programming in A/A Mux Mode. The following subsec- tions provide this data. Any information that is not shown here is not specific to A/A Mux Mode and uses the FWH Mode specifications. When the VPP voltage is ≤ VPPLK, read operations from memory or reading the Product ID are enabled, but programming and erase functions are disabled. Placing VPPH1/2 on VPP enables successful sector erase and program operations. Notes: 1. Input leakage currents include high-Z output leakage for all bi-directional buffers with tri-state outputs. 2. Refer to PCI spec. 3. Inputs are not “5-volt safe.” 4. IIL may be changed on IC and ID pins (up to 200 µA) if pulled against internal pull-downs. Refer to the pin descriptions. Notes: 1. If RST is asserted when the WSM is not busy (RY/BY = 1), the reset will complete within 100 ns. 2. A reset time, tPHAV, is required from the latter of RY/BY or RST going high until outputs are valid. AC Waveforms for Reset Operations A/A Mux Mode Interface DC Input/Output Specifications Symbol Parameter Conditions Min Max Unit V IH (3) Input High Voltage 0.5 V CC V CC +0.5 V V IL (3) Input Low Voltage -0.5 0.8 V I IL (4) Input Leakage Current V CC =VCC max, Vout =VCC or GND +10 µA VOH Output High Voltage VCC =VCC min, IOH =-2.5mA VCC =VCC min, IOH =-100µA 0.85 VCC Min VCC =0.4 V V V OL Output Low Voltage V CC =VCC min, IOL =2 mA 0.4 V C IN Input Pin Capacitance 13 pF C CLK CLK Pin Capacitance 3 12 pF LPIN (2) Recommended Pin Inductance 20 nH Reset Operations Symbol Parameter Min Max Unit tPLPH RST Pulse Low Time (If RST is tied to VCC, this specification is not applicable.) 100 ns t PLRH RST Low to Reset during Sector Erase or Program (1)(2) 20 µs VIH VIL VIH VIL tPLPH tPLRH RY/BY RST |
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Description similaire - AT49LW040 |
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