參數(shù)資料
型號： DSM2190F4
廠商： 意法半導(dǎo)體
元件分類： 數(shù)字信號處理
英文描述： 16-bit fixed point DSP with Flash
中文描述： 具有閃存的 16 位定點 DSP
文件頁數(shù)： 22/61頁
文件大小： 530K
代理商： DSM2190F4
DSM2190F4
22/61
During execution of the Erase cycle, the Flash
memory accepts only Reset and Suspend Sector
Erase instruction sequences. Erasure of one
Flash memory sector may be suspended, in order
to read data from another Flash memory sector,
and then resumed.
The address provided with the initial Flash Sector
Erase command sequence (Table 5) must select
the first desired sector (FS0 - FS7 or CSBOOT0-
CSBOOT3) to erase. Subsequent sector erase
commands that are appended on within the time-
out period must be addressed to other desired
segments (FS0 - FS7 or CSBOOT0-CSBOOT3).
Suspend Sector Erase.
When a Sector Erase
cycle is in progress, the Suspend Sector Erase in-
struction sequence can be used to suspend the
cycle by writing 0B0h to any address when an ap-
propriate Sector Select (FS0-FS7 or CSBOOT0-
CSBOOT3) is selected (See Table 5). This allows
reading of data from another Flash memory sector
after the Erase cycle has been suspended. Sus-
pend Sector Erase is accepted only during an
Erase cycle and defaults to Read mode. A Sus-
pend Sector Erase instruction sequence executed
during an Erase time-out period, in addition to sus-
pending the Erase cycle, terminates the time out
period.
The Toggle Flag (DQ6) bit stops toggling when the
device internal logic is suspended. The status of
this bit must be monitored at an address within the
Flash memory sector being erased. The Toggle
Flag (DQ6) bit stops toggling between 0.1 μs and
15 μs after the Suspend Sector Erase instruction
sequence has been executed. The device is then
automatically set to Read mode.
If an Suspend Sector Erase instruction sequence
was executed, the following rules apply:
– Attempting to read from a Flash memory sector
that was being erased outputs invalid data.
– Reading from a Flash memory sector that was
not
being erased is valid.
– The Flash memory
cannot
be programmed, and
only responds to Resume Sector Erase and Re-
set Flash instruction sequences (Read is an op-
eration and is allowed).
– If a Reset Flash instruction sequence is re-
ceived, data in the Flash memory sector that
was being erased is invalid.
Resume Sector Erase.
If a Suspend Sector
Erase instruction sequence was previously exe-
cuted, the erase cycle may be resumed with this
instruction sequence. The Resume Sector Erase
instruction sequence consists of writing 030h to
any address while an appropriate Sector Select
(FS0-FS7 or CSBOOT0-CSBOOT3) is active.
(See Table 5.)
Flash Memory Sector Protect.
Each Flash memory sector can be separately pro-
tected against Program and Erase cycles. Sector
Protection provides additional data security be-
cause it disables all Program or Erase cycles. This
mode can be activated through the JTAG Port or a
Device Programmer. Sector protection can be se-
lected for each sector using PSDsoft Express.
This automatically protects selected sectors when
the device is programmed through the JTAG Port
or a Device Programmer. Flash memory sectors
can be unprotected to allow updating of their con-
tents using the JTAG Port or a Device Program-
mer. The DSP can read (but cannot change) the
sector protection bits.
Any attempt to program or erase a protected Flash
memory sector is ignored by the device. The Verify
operation results in a read of the protected data.
This allows a guarantee of the retention of the Pro-
tection status.
The sector protection status can be read by the
DSP through the Main Flash memory protection
register (in the
csiop
block) as defined in Table 7,
and Secondary Flash memory protection register
in Table 8.
Table 7. Main Flash Memory Protection Register Definition
Note: Bit Definitions:
Sec<i>_Prot
1 = Flash memory sector <i> is write protected.
Sec<i>_Prot
0 = Flash memory sector <i> is not write protected.
Table 8. Secondary Flash Memory Protection/Security Bit Register Definition
Note: Security_Bit = 1, device is secured.
Note:
Sec<i>_Prot
1 = Flash memory sector <i> is write protected.
Sec<i>_Prot
0 = Flash memory sector <i> is not write protected.
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Sec7_Prot
Sec6_Prot
Sec5_Prot
Sec4_Prot
Sec3_Prot
Sec2_Prot
Sec1_Prot
Sec0_Prot
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Security_Bit
not used
not used
not used
Sec3_Prot
Sec2_Prot
Sec1_Prot
Sec0_Prot
相關(guān)PDF資料
PDF描述
DSM2190F4V 16-bit fixed point DSP with Flash
DSM2190F4V-15K6 16-bit fixed point DSP with Flash
DSM2190F4V-15T6 16-bit fixed point DSP with Flash
DSM3MA GENERAL-USE RECTIFIER DIODE
DSP-A1092 NATURAL SOUND AV AMPLIFIRE
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DSM2190F4V 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DSM (Digital Signal Processor System Memory) For Analog Devices ADSP-2191 DSPs (3.3V Supply)
DSM2190F4V-15K6 功能描述:SPLD - 簡單可編程邏輯器件 3.3V 16M 150ns RoHS:否 制造商:Texas Instruments 邏輯系列:TICPAL22V10Z 大電池數(shù)量:10 最大工作頻率:66 MHz 延遲時間:25 ns 工作電源電壓:4.75 V to 5.25 V 電源電流:100 uA 最大工作溫度:+ 75 C 最小工作溫度:0 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:DIP-24
DSM2190F4V-15T6 功能描述:SPLD - 簡單可編程邏輯器件 3.3V 16M 150ns RoHS:否 制造商:Texas Instruments 邏輯系列:TICPAL22V10Z 大電池數(shù)量:10 最大工作頻率:66 MHz 延遲時間:25 ns 工作電源電壓:4.75 V to 5.25 V 電源電流:100 uA 最大工作溫度:+ 75 C 最小工作溫度:0 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:DIP-24
DSM-22LA 制造商:Tenma 功能描述:Dual Digital Satellite Meter
DSM2C250 制造商:Molex 功能描述:REED SWITCH W/NC 3P M/MP 5M
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*