Datenblatt-Suchmaschine für elektronische Bauteile |
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AM29DS322T90WMIN Datenblatt(PDF) 11 Page - SPANSION |
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AM29DS322T90WMIN Datenblatt(HTML) 11 Page - SPANSION |
11 / 52 page 10 Am29DS32xG May 15, 2002 ADV ANC E INFO RMAT ION dress access timings provide new data when ad- dresses are changed. While in sleep mode, output data is latched and always available to the system. I CC5 in the DC Characteristics table represents the automatic sleep mode current specification. RESET#: Hardware Reset Pin The RESET# pin provides a hardware method of re- setting the device to reading array data. When the RE- SET# pin is driven low for at least a period of t RP, the device immediately terminates any operation in progress, tristates all output pins, and ignores all read/write commands for the duration of the RESET# pulse. The device also resets the internal state ma- chine to reading array data. The operation that was in- terrupted should be reinitiated once the device is ready to accept another command sequence, to en- sure data integrity. Current is reduced for the duration of the RESET# pulse. When RESET# is held at V SS±0.3 V, the device draws CMOS standby current (I CC4). If RESET# is held at V IL but not within VSS±0.3 V, the standby current will be greater. The RESET# pin may be tied to the system reset cir- cuitry. A system reset would thus also reset the Flash memory, enabling the system to read the boot-up firm- ware from the Flash memory. If RESET# is asserted during a program or erase op- eration, the RY/BY# pin remains a “0” (busy) until the internal reset operation is complete, which requires a time of t READY (during Embedded Algorithms). The system can thus monitor RY/BY# to determine whether the reset operation is complete. If RESET# is asserted when a program or erase operation is not ex- ecuting (RY/BY# pin is “1”), the reset operation is com- pleted within a time of t READY (not during Embedded Algorithms). The system can read data t RH after the RESET# pin returns to V IH. ICC4 in the DC Characteristics table represents the reset current. Also refer to AC Characteristics tables for RESET# timing parameters and to Figure 14 for the timing diagram. Output Disable Mode When the OE# input is at V IH, output from the device is disabled. The output pins are placed in the high impedance state. Table 2. Device Bank Divisions Device Part Number Bank 1 Bank 2 Megabits Sector Sizes Megabits Sector Sizes Am29DS322G 4 Mbit Eight 8 Kbyte/4 Kword, seven 64 Kbyte/32 Kword 28 Mbit Fifty-six 64 Kbyte/32 Kword Am29DS323G 8 Mbit Eight 8 Kbyte/4 Kword, fifteen 64 Kbyte/32 Kword 24 Mbit Forty-eight 64 Kbyte/32 Kword Am29DS324G 16 Mbit Eight 8 Kbyte/4 Kword, thrity-one 64 Kbyte/32 Kword 16 Mbit Thirty-two 64 Kbyte/32 Kword |
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