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参数资料
| 型号： | HY29LV320BF-12 |
| 厂商： | HYNIX SEMICONDUCTOR INC |
| 元件分类： | DRAM |
| 英文描述： | Dust Cover; For Use With:Anderson Power SB350 Series Connectors; Color:Red |
| 中文描述： | 2M X 16 FLASH 3V PROM, 120 ns, PBGA63 |
| 封装： | 7 X 11 MM, FBGA-63 |
| 文件页数： | 21/44页 |
| 文件大小： | 323K |
| 代理商： | HY29LV320BF-12 |
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21
r1.3/May 02
HY29LV320
The host may also write the Electronic ID Com-
mand sequence when the chip is in the Erase
Suspend mode. The device allows reading Elec-
tronic ID codes even at addresses within erasing
sectors, since the codes are not stored in the
memory array. When the device exits the Elec-
tronic ID mode, the device reverts to the Erase
Suspend mode, and is ready for another valid
operation. See Electronic ID Mode section for
more information.
The system must write the Erase Resume com-
mand to exit the Erase Suspend mode and con-
tinue the sector erase operation. Further writes of
the Resume command are ignored. Another Erase
Suspend command can be written after the de-
vice has resumed erasing.
Note
: If an erase operation is started while in the Sec
2
region and then suspended to do other operations, the
host must return the device to the Sec
2
region before
issuing the Erase Resume command. Failure to do this
may result in the wrong sector being erased.
Electronic ID Command
The Electronic ID mode provides manufacturer
and device identification and sector protection veri-
fication through identifier codes output on
DQ[15:0]. This mode is intended primarily for pro-
gramming equipment to automatically match a
device to be programmed with its corresponding
programming algorithm.
Two methods are provided for accessing the Elec-
tronic ID data. The first requires V
ID
on address
pin A[9], as described previously in the Device
Operations section.
The Electronic ID data can also be obtained by the
host through specific commands issued via the com-
mand register, as shown in Table 9. This method
does not require V
ID
. The Electronic ID command
sequence may be issued while the device is in the
Read mode or in the Erase Suspend Read mode.
The command may not be written while the device
is actively programming or erasing.
The Electronic ID command sequence is initiated
by writing two unlock cycles, followed by a third
write cycle that contains the Electronic ID com-
mand. The device then enters the Electronic ID
mode, and the system may read at any address
any number of times without initiating another com-
mand sequence.
A read cycle at address 0xXXX00 retrieves the
manufacturer code.
A read cycle at address 0xXXX01 in returns
the device code.
A read cycle containing a sector address (SA)
in A[20:12] and the address 0x02 in A[7:0] re-
turns 0x01 if that sector is protected, or 0x00 if
it is unprotected.
A read cycle at address 0xXXX03 returns 0x80
if the Sec
2
region is protected and locked at
the factory and returns 0x00 if it is not.
The system must write the Reset command to exit
the Electronic ID mode and return the bank to the
normal Read mode, or to the Erase-Suspended
read mode if the device was in that mode when
the Electronic ID command was invoked. In the
latter case, an Erase Resume command to that
bank will continue the suspended erase operation.
Query Command and Common Flash Inter-
face (CFI) Mode
The HY29LV320 is capable of operating in the
Common Flash Interface (CFI) mode. This mode
allows the host system to determine the manufac-
turer of the device, its operating parameters, its
configuration and any special command codes that
the device may accept. With this knowledge, the
system can optimize its use of the chip by using
appropriate timeout values, optimal voltages and
commands necessary to use the chip to its full
advantage.
Two commands are employed in association with
CFI mode. The first places the device in CFI mode
(Query command) and the second takes it out of
CFI mode (Reset command). These are described
in Table 10.
The single cycle Query command is valid only
when the device is in the Read mode, including
during Erase Suspend and Standby states and
while in Electronic ID command mode, but is ig-
nored otherwise. The command is not valid while
the HY29LV320 is in the Electronic ID bus opera-
tion mode. Read cycles at appropriate addresses
while in the Query mode provide CFI data as de-
scribed later in this section. Write cycles are ig-
nored, except for the Reset command.
The Reset command returns the device from the
CFI mode to the array Read mode (even if it was
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相关代理商/技术参数 |
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| HY29LV320BF-12I | 制造商:HYNIX 制造商全称:Hynix Semiconductor 功能描述:32 Mbit (2M x 16) Low Voltage Flash Memory |
| HY29LV320BF-70 | 制造商:HYNIX 制造商全称:Hynix Semiconductor 功能描述:32 Mbit (2M x 16) Low Voltage Flash Memory |
| HY29LV320BF-70I | 制造商:HYNIX 制造商全称:Hynix Semiconductor 功能描述:32 Mbit (2M x 16) Low Voltage Flash Memory |
| HY29LV320BF-80 | 制造商:HYNIX 制造商全称:Hynix Semiconductor 功能描述:32 Mbit (2M x 16) Low Voltage Flash Memory |
| HY29LV320BF-80I | 制造商:HYNIX 制造商全称:Hynix Semiconductor 功能描述:32 Mbit (2M x 16) Low Voltage Flash Memory |
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