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M29F010B90N3F Datasheet(PDF) 3 Page - STMicroelectronics |
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M29F010B90N3F Datasheet(HTML) 3 Page - STMicroelectronics |
3 / 20 page 3/20 M29F010B SUMMARY DESCRIPTION The M29F010B is a 1 Mbit (128Kb x8) non-volatile memory that can be read, erased and repro- grammed. These operations can be performed us- ing a single 5V supply. On power-up the memory defaults to its Read mode where it can be read in the same way as a ROM or EPROM. The memory is divided into blocks that can be erased independently so it is possible to preserve valid data while old data is erased. Each block can be protected independently to prevent accidental Program or Erase commands from modifying the memory. Program and Erase commands are writ- ten to the Command Interface of the memory. An on-chip Program/Erase Controller simplifies the process of programming or erasing the memory by taking care of all of the special operations that are required to update the memory contents. The end of a program or erase operation can be detected and any error conditions identified. The command set required to control the memory is consistent with JEDEC standards. Chip Enable, Output Enable and Write Enable sig- nals control the bus operation of the memory. They allow simple connection to most micropro- cessors, often without additional logic. The memory is offered in PLCC32, TSOP32 (8 x 20mm) packages and it is supplied with all the bits erased (set to ’1’). In order to meet environmental requirements, ST offers the M29F010B in ECOPACK® packages. ECOPACK packages are Lead-free. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. Table 3. Absolute Maximum Ratings (1) Note: 1. Except for the rating "Operating Temperature Range", stresses above those listed in the Table "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating condi- tions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant qual- ity documents. 2. Minimum Voltage may undershoot to –2V during transition and for less than 20ns during transitions. Symbol Parameter Value Unit TA Ambient Operating Temperature (Temperature Range Option 1) 0 to 70 °C Ambient Operating Temperature (Temperature Range Option 6) –40 to 85 °C Ambient Operating Temperature (Temperature Range Option 3) –40 to 125 °C TBIAS Temperature Under Bias –50 to 125 °C TSTG Storage Temperature –65 to 150 °C VIO (2) Input or Output Voltage –0.6 to 6 V VCC Supply Voltage –0.6 to 6 V VID Identification Voltage –0.6 to 13.5 V The maximum ratings related to soldering condi- tions are also marked on the inner box label. ECO- PACK is an ST trademark. ECOPACK specifications are available at: www.st.com. SIGNAL DESCRIPTIONS See Figure 1, Logic Diagram, and Table 1, Signal Names, for a brief overview of the signals connect- ed to this device. Address Inputs (A0-A16). The Address Inputs select the cells in the memory array to access dur- ing Bus Read operations. During Bus Write opera- tions they control the commands sent to the Command Interface of the internal state machine. Data Inputs/Outputs (DQ0-DQ7). The Data In- puts/Outputs output the data stored at the selected address during a Bus Read operation. During Bus Write operations they represent the commands sent to the Command Interface of the internal state machine. Chip Enable (E). The Chip Enable, E, activates the memory, allowing Bus Read and Bus Write op- erations to be performed. When Chip Enable is High, VIH, all other pins are ignored. Output Enable (G). The Output Enable, G, con- trols the Bus Read operation of the memory. Write Enable (W). The Write Enable, W, controls the Bus Write operation of the memory’s Com- mand Interface. VCC Supply Voltage. The VCC Supply Voltage supplies the power for all operations (Read, Pro- gram, Erase etc.). The Command Interface is disabled when the VCC Supply Voltage is less than the Lockout Voltage, |
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