參數(shù)資料
型號(hào)： GT28F320D18B110
英文描述： x16 Flash EEPROM
中文描述： x16閃存EEPROM
文件頁(yè)數(shù)： 13/83頁(yè)
文件大小： 836K
代理商： GT28F320D18B110
28F320D18
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NOTES:
1. For detailed description of the command allowed using dual partitions see
Table 11 on page 38
.
2. Dual Partition Restrictions:
a.
Status register reflects partition state, not WSM state — this allows a status register for each partition.
b. Only one partition can be programmed or erased at a time — no command queuing.
c. Commands must be written to an address within the block targeted by that command.
d. It is not possible to do burst reads that cross partition boundaries.
3.1.5
Reset
The device enters a reset mode when RST# 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 RST# 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the memory contents at the aborted location are no longer valid. See
Figure 30, “AC Waveform for
Reset Operations” on page 64
for detailed information regarding reset timings.
3.1.6
Read Query
The read query mode is only available in the bottom partition and requires that the Read Query
command be written to the bottom partition. The mode outputs Common Flash Interface (CFI) data
when the device is read. The CFI data structure contains information such as block size, density,
command set and electrical specifications. In this mode, read cycles retrieve CFI information. To
return to read array mode, write the Read Array command (FFH).
Table 2. Simultaneous Commands Allowed with Dual Partitions
(1,2)
If one partition is:
Then the commands allowed in the other partition are:
R
R
R
P
E
P
E
Idle
á
á
á
á
á
á
á
Reading
Reading Status Register
Reading ID/CFI
Programming
á
á
á
Erasing
á
á
á
Program Suspended
á
á
á
Erase Suspended
á
á
á
á
á
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