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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AM29F040-120EEB датащи(PDF) 2 Page - Advanced Micro Devices |
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AM29F040-120EEB датащи(HTML) 2 Page - Advanced Micro Devices |
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2 / 33 page  2 Am29F040 Any individual sector is typically erased and verified in 1.0 seconds (if already completely preprogrammed). This device also features a sector erase architecture. The sector mode allows for 64K byte blocks of memory to be erased and reprogrammed without affecting other blocks. The Am29F040 is erased when shipped from the factory. The device features single 5.0 V power supply opera- tion for both read and write functions. Internally gener- ated and regulated voltages are provided for the program and erase operations. A low VCC detector automatically inhibits write operations on the loss of power. The end of program or erase is detected by Data Polling of DQ7 or by the Toggle Bit feature on DQ6. Once the end of a program or erase cycle has been completed, the device internally resets to the read mode. AMD’s Flash technology combines years of EPROM and E2PROM experience to produce the highest levels of quality, reliability and cost effectiveness. The Am29F040 memory electrically erases the entire chip or all bits within a sector simultaneously via Fowler- Nordheim tunneling. The bytes are programmed one byte at a time using the EPROM programming mechanism of hot electron injection. Flexible Sector-Erase Architecture s Eight 64 Kbyte sectors s Individual-sector, multiple-sector, or bulk-erase capability s Individual or multiple-sector protection is user definable 7FFFFh 6FFFFh 5FFFFh 64 Kbytes per Sector 4FFFFh 3FFFFh 2FFFFh 1FFFFh 0FFFFh 00000h 17113E-1 |
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