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M29W320EB70ZE6 Datasheet(PDF) 11 Page - STMicroelectronics |
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M29W320EB70ZE6 Datasheet(HTML) 11 Page - STMicroelectronics |
11 / 46 page 11/46 M29W320ET, M29W320EB Ready/Busy is Low, VOL. Ready/Busy is high-im- pedance during Read mode, Auto Select mode and Erase Suspend mode. After a Hardware Reset, Bus Read and Bus Write operations cannot begin until Ready/Busy be- comes high-impedance. See Table 16. and Figure 16., Reset/Block Temporary Unprotect AC Wave- forms. The use of an open-drain output allows the Ready/ Busy pins from several memories to be connected to a single pull-up resistor. A Low will then indicate that one, or more, of the memories is busy. Byte/Word Organization Select (BYTE). The Byte/Word Organization Select pin is used to switch between the x8 and x16 Bus modes of the memory. When Byte/Word Organization Select is Low, VIL, the memory is in x8 mode, when it is High, VIH, the memory is in x16 mode. VCC Supply Voltage (2.7V to 3.6V). VCC pro- vides the power supply for all operations (Read, Program and Erase). The Command Interface is disabled when the VCC Supply Voltage is less than the Lockout Voltage, VLKO. This prevents Bus Write operations from ac- cidentally damaging the data during power up, power down and power surges. If the Program/ Erase Controller is programming or erasing during this time then the operation aborts and the memo- ry contents being altered will be invalid. A 0.1µF capacitor should be connected between the VCC Supply Voltage pin and the VSS Ground pin to decouple the current surges from the power supply. The PCB track widths must be sufficient to carry the currents required during Program and Erase operations, ICC3. VSS Ground. VSS is the reference for all voltage measurements. The device features two VSS pins which must be both connected to the system ground. |
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