參數(shù)資料
型號(hào)： 28F1604C3
廠商： Intel Corp.
英文描述： 3 Volt Advanced+ Stacked Chip Scale Package Memory(3V閃速存儲(chǔ)器和靜態(tài)存儲(chǔ)器)
中文描述： 3伏高級(jí)堆疊芯片級(jí)封裝存儲(chǔ)器（3V的閃速存儲(chǔ)器和靜態(tài)存儲(chǔ)器）
文件頁數(shù)： 13/64頁
文件大小： 927K
代理商： 28F1604C3
28F1602C3, 28F1604C3, 28F3204C3
Preliminary
7
2.1.4
Flash Reset
The device enters a reset mode when RP# is driven low. In reset mode, internal circuitry is turned
off and outputs are placed in a high-impedance state.
After return from reset, a time t
PHQV
is required until outputs are valid, and a delay (t
PHWL
or
t
PHEL
) is required before a write sequence can be initiated. After this wake-up interval, normal
operation is restored. The device defaults to read array mode, the status register is set to 80H, and
the read configuration register defaults to asynchronous reads.
If RP# is taken low during a block erase or program operation, the operation will be aborted and the
memory contents at the aborted location are no longer valid.
2.1.5
Write
Writes to flash take place when both F-CE# and F-WE# are low and F-OE# is high. Writes to
SRAM take place when both S-CS
1
# and S-WE# are low and S-OE# and S-SC
2
are high.
Commands are written to the flash memory’s Command User Interface (CUI) using standard
microprocessor write timings to control flash operations. The CUI does not occupy an addressable
memory location within the flash component. The address and data buses are latched on the rising
edge of the second F-WE# or F-CE# pulse, whichever occurs first. (See
Figure 6
and
Figure 7
for
read and write waveforms.)
3.0
Flash Memory Modes of Operation
The flash memory has four read modes: read array, read configuration, read status, and read query.
The write modes are program and erase. Three additional modes (erase suspend to program, erase
suspend to read and program suspend to read) are available only during suspended operations.
These modes are reached using the commands summarized in
Table 5, “Flash Memory Command
Definitions” on page 11
.
3.1
Read Array (FFH)
When F-RP# transitions from V
IL
(reset) to V
IH
, the device defaults to read array mode and will
respond to the read control inputs without any additional CUI commands.
In addition, the address of the desired location must be applied to the address balls. If the device is
not in read array mode, as would be the case after a program or erase operation, the Read Array
command (FFH) must be written to the CUI before array reads can take place.
3.2
Read Identifier (90H)
The read configuration mode outputs the manufacturer/device identifier. The device is switched to
this mode by writing the read configuration command (90H). Once in this mode, read cycles from
addresses shown in
Table 4, “Read Configuration Table” on page 8
retrieve the specified
information. To return to read array mode, write the Read Array command (FFH).
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