Details, datasheet, quote on part number: M28LV16
PartM28LV16
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CompanyN.A.
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Features, Applications
x 8) LOW VOLTAGE PARALLEL EEPROM with SOFTWARE DATA PROTECTION

FAST ACCESS TIME: 200ns SINGLE LOW VOLTAGE OPERATION LOW POWER CONSUMPTION FAST WRITE CYCLE: 64 Bytes Page Write Operation Byte or Page Write Cycle: 3ms Max ENHANCED END OF WRITE DETECTION: Data Polling Toggle Bit PAGE LOAD TIMER STATUS BIT HIGH RELIABILITY SINGLE POLYSILICON, CMOS TECHNOLOGY: Endurance >100,000 Erase/Write Cycles Data Retention >40 Years JEDEC APPROVED BYTEWIDE PIN OUT SOFTWARE DATA PROTECTION M28LV16 is replaced by the products described on the document M28C16A DESCRIPTION The x 8 low power Parallel EEPROM fabricatedwith SGS-THOMSON proprietary single polysilicon CMOS technology. The device offers fast access time with low power dissipation and requires to 3.6V power supply. The circuit has been designed to offer a flexible microcontroller interface featuring both hardware and software handshaking with Data Polling and Toggle Bit. The M28LV16 supports 64 byte page write operation. A Software Data Protection (SDP) is also possible using the standard JEDEC algorithm. Table 1. Signal Names

G RB VCC VSS Address Input Data Input / Output Write Enable Chip Enable Output Enable Ready / Busy Supply Voltage Ground

Note: * RB function is offered only with TSOP28 package.
This is information on a product still in production bu t not recommended for new de sign.

Parameter Ambient Operating Temperature Storage Temperature Range Supply Voltage Input/Output Voltage Input Voltage Electrostatic Discharge Voltage (Human Body model)

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 conditions for extended periods may affect device reliability. Refer also to the SGS-THOMSON SURE Program and other relevant quality documents. 2. 100pF through MIL-STD-883C, 3015.7

Mode Standby Output Disable Write Disable Read Write

PIN DESCRIPTION Addresses (A0-A10). The address inputs select an 8-bit memory location during a read or write operation. Chip Enable (E). The chip enable input must be low to enable all read/write operations. When Chip Enable is high, power consumption is reduced. Output Enable (G). The Output Enable input controls the data output buffers and is used to initiate read operations. Data In/ Out - DQ7). Data is written to or read from the M28LV16 through the I/O pins. Write Enable (W). The Write Enable input controls the writing of data to the M28LV16. Ready/Busy (RB). Ready/Busy is an open drain output that can be used to detect the end of the internal write cycle. It is offered only with the TSOP28 package. The reader should refer to the M28LV17 datasheet for more information about the Ready/Busy function.

OPERATION In order to prevent data corruption and inadvertent write operations during power-up, a Power On Reset (POR) circuit resets all internal programming cicuitry. Access to the memory in write mode is allowed after a power-up as specified in Table 7. Read The M28LV16 is accessed like a static RAM. When E and G are low with W high, the data addressed is presented on the I/O pins. The I/O pins are high impedance when either E is high. Write operations are initiated when both W and E are low and G is high.The M28LV16 supports both E and W controlled write cycles. The Address is latched by the falling edge or W which ever occurs last and the Data on the rising edge or W which ever occurs first. Once initiated the write operation is internally timed until completion.


 

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