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20
Am28F512
Auto Select Command
AMD’s Flash memories are designed for use in applica-
tions where the local CPU alters memory contents. Ac-
cordingly, manufacturer and device codes must be
accessible while the device resides in the target sys-
tem. PROM programmers typically access the signa-
ture codes by raising A9 to a high voltage. However,
multiplexing high voltage onto address lines is not a
generally desired system design practice.
The device contains an Auto Select operation to sup-
plement traditional PROM programming methodology.
The operation is initiated by writing 80h or 90h into the
command register. Following this command, a read
cycle address 0000h retrieves the manufacturer code
of 01h. A read cycle from address 0001h returns the
device code. To terminate the operation, it is necessary
to write another valid command, such as Reset (FFh),
into the register.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AM28F512-120FEB | 512 Kilobit (64 K x 8-Bit) CMOS 12.0 Volt, Bulk Erase Flash Memory |
| AM28F512-120FI | 512 Kilobit (64 K x 8-Bit) CMOS 12.0 Volt, Bulk Erase Flash Memory |
| AM28F512-120FIB | ER 14C 14#16 PIN RECP LINE |
| AM28F512-120JC | 512 Kilobit (64 K x 8-Bit) CMOS 12.0 Volt, Bulk Erase Flash Memory |
| AM28F512-120JCB | 512 Kilobit (64 K x 8-Bit) CMOS 12.0 Volt, Bulk Erase Flash Memory |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM28F512120JC | 制造商:AMD 功能描述:New |
| AM28F512-200JC | 制造商:Advanced Micro Devices 功能描述: 制造商:Advanced Micro Devices 功能描述:64K X 8 FLASH 12V PROM, 200 ns, PQCC32 |
| AM28F512-90JC | 制造商:Advanced Micro Devices 功能描述: 制造商:Advanced Micro Devices 功能描述:64K X 8 FLASH 12V PROM, 90 ns, PQCC32 |
| AM29 | 制造商:Distributed By MCM 功能描述:REFRIGERATR DOOR GASKET DIRECT |
| AM290 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
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