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| 型號(hào)： | PC28F640J3F75A |
| 元件分類： | PROM |
| 英文描述： | 4M X 16 FLASH 2.7V PROM, PBGA64 |
| 封裝： | LEAD FREE, BGA-64 |
| 文件頁(yè)數(shù)： | 54/66頁(yè) |
| 文件大小： | 740K |
| 代理商： | PC28F640J3F75A |
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Numonyx Embedded Flash Memory (J3 65 nm) Single Bit per Cell (SBC)
Datasheet
March 2010
58
208032-02
13.0
Common Flash Interface
The (CFI) specification outlines device and host system software interrogation
handshake which allows specific vendor-specified software algorithms to be used for
entire families of devices. This allows device independent, JEDEC ID-independent, and
forward- and backward-compatible software support for the specified flash device
families. It allows flash vendors to standardize their existing interfaces for long-term
compatibility.
This section defines the data structure or “database” returned by the (CFI) Query
command. System software should parse this structure to gain critical information such
as block size, density, x8/x16, and electrical specifications. Once this information has
been obtained, the software will know which command sets to use to enable flash
writes, block erases, and otherwise control the flash component. The Query is part of
an overall specification for multiple command set and control interface descriptions
called CFI.
13.1
Query Structure Output
The Query “database” allows system software to gain information for controlling the
flash component. This section describes the device’s CFI-compliant interface that allows
the host system to access Query data.
Query data are always presented on the lowest-order data outputs (D[7:0]) only. The
numerical offset value is the address relative to the maximum bus width supported by
the device. On this family of devices, the Query table device starting address is a 10h,
which is a word address for x16 devices.
For a word-wide (x16) device, the first two bytes of the Query structure, “Q” and “R” in
ASCII, appear on the low byte at word addresses 10h and 11h. This CFI-compliant
device outputs 00h data on upper bytes. Thus, the device outputs ASCII “Q” in the low
byte (D[7:0]) and 00h in the high byte (D[15:8]).
At Query addresses containing two or more bytes of information, the least significant
data byte is presented at the lower address, and the most significant data byte is
presented at the higher address.
In all of the following tables, addresses and data are represented in hexadecimal
notation, so the “h” suffix has been dropped. In addition, since the upper byte of word-
wide devices is always “00h,” the leading “00” has been dropped from the table
notation and only the lower byte value is shown. Any x16 device outputs can be
assumed to have 00h on the upper byte in this mode.
Table 35: Summary of Query Structure Output as a Function of Device and Mode
Device
Type/
Mode
Query start location in
maximum device bus
width addresses
Query data with maximum device
bus width addressing
Query data with byte addressing
Hex
Offset
Hex Code
ASCII
Value
Hex
Offset
Hex Code
ASCII
Value
x16 device
10h
10:
0051
“Q”
20:
51
“Q”
x16 mode
11:
0052
“R”
21:
00
“Null”
12:
0059
“Y”
22:
52
“R”
x16 device
20:
51
“Q”
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PC28F640J3F75B | 制造商:Micron Technology Inc 功能描述:PARALLEL NOR - Tape and Reel |
| PC28F640J3F75B TR | 制造商:Micron Technology Inc 功能描述:IC FLASH 64MBIT 75NS TBGA |
| PC28F640J3F75D | 制造商:Micron Technology Inc 功能描述:NUMONYX EMBEDDED FLASH MEMORY (J3 65NM) SINGLE BIT PER CELL (SBC) 制造商:Micron Technology Inc 功能描述:NOR Flash Parallel 3V/3.3V 64Mbit 8M/4M x 8bit/16bit 75ns 64-Pin EBGA T/R 制造商:Micron Technology Inc 功能描述:PARALLEL NOR - Tape and Reel 制造商:Micron Technology 功能描述:NOR Flash Parallel 3V/3.3V 64Mbit 8M/4M x 8bit/16bit 75ns 64-Pin EBGA T/R 制造商:Micron Technology 功能描述:NUMONYX EMBEDDED FLASH MEMORY (J3 65NM) SINGLE BIT PER CELL (SBC) |
| PC28F640J3F75E | 制造商:Micron Technology Inc 功能描述:PARALLEL NOR - Trays |
| PC28F640P30B85 | 制造商:Intel 功能描述:MM#873919 64MB FLASH SOLD->NUM |
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