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參數(shù)資料
| 型號： | E28F320J5-120 |
| 廠商： | INTEL CORP |
| 元件分類： | PROM |
| 英文描述： | StrataFlash MEMORY TECHNOLOGY 32 AND 64 MBIT |
| 中文描述： | 2M X 16 FLASH 5V PROM, 150 ns, PDSO56 |
| 封裝： | 14 X 20 MM, TSOP-56 |
| 文件頁數(shù)： | 11/51頁 |
| 文件大?。?/td> | 651K |
| 代理商： | E28F320J5-120 |
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28F320J5 and 28F640J5
Datasheet
19
4.2.1
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 (DQ0–DQ7) 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 (DQ0–DQ7) and 00h in
the high byte (DQ8–DQ15).
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.
NOTE:
1. The system must drive the lowest order addresses to access all the device's array data when the device is
configured in x8 mode. Therefore, word addressing, where these lower addresses are not toggled by the
system, is "Not Applicable" for x8-configured devices.
Table 5.
Summary of Query Structure Output as a Function of Device and Mode
Device
Type/
Mode
Query start location in
maximum device bus
width addresses
Querydatawithmaximum
device bus width addressing
Querydatawithbyte
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”
x8 mode
N/A(1)
N/A(1
21:
51
“Q”
22:
52
“R”
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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