參數(shù)資料
型號(hào)： M50FLW040A_06
廠(chǎng)商： 意法半導(dǎo)體
英文描述： 4-Mbit (5 】 64 Kbyte blocks + 3 】 16 】 4 Kbyte sectors) 3-V supply Firmware Hub / low-pin count Flash memory
中文描述： 4兆位（5】64字節(jié)塊3】16】4 Kbyte的）3 - V電源供電固件集線(xiàn)器/低引腳數(shù)的閃存
文件頁(yè)數(shù)： 20/64頁(yè)
文件大?。?/td> 338K
代理商： M50FLW040A_06
Bus operations
M50FLW040A, M50FLW040B
20/64
3.2
Address/Address Multiplexed (A/A Mux) bus operations
The Address/Address Multiplexed (A/A Mux) Interface has a more traditional-style interface.
The signals consist of a multiplexed address signals (A0-A10), data signals, (DQ0-DQ7) and
three control signals (RC, G, W). An additional signal, RP, can be used to reset the memory.
The Address/Address Multiplexed (A/A Mux) Interface is included for use by Flash
Programming equipment for faster factory programming. Only a subset of the features
available to the Firmware Hub (FWH)/Low Pin Count (LPC) Interface are available; these
include all the Commands but exclude the Security features and other registers.
The following operations can be performed using the appropriate bus cycles: Bus Read, Bus
Write, Output Disable and Reset.
When the Address/Address Multiplexed (A/A Mux) Interface is selected, all the blocks are
unprotected. It is not possible to protect any blocks through this interface.
3.2.1
Bus Read
Bus Read operations are used to read the contents of the Memory Array, the Electronic
Signature or the Status Register. A valid Bus Read operation begins by latching the Row
Address and Column Address signals into the memory using the Address Inputs, A0-A10,
and the Row/Column Address Select RC. Write Enable (W) and Interface Reset (RP) must
be High, V
IH
, and Output Enable, G, Low, V
IL
. The Data Inputs/Outputs will output the value,
according to the timing constraints specified in
Figure 16
, and
Table 28
.
3.2.2
Bus Write
Bus Write operations are used to write to the Command Interface. A valid Bus Write
operation begins by latching the Row Address and Column Address signals into the
memory using the Address Inputs, A0-A10, and the Row/Column Address Select RC. The
data should be set up on the Data Inputs/Outputs; Output Enable, G, and Interface Reset,
RP, must be High, V
IH
; and Write Enable, W, must be Low, V
IL
. The Data Inputs/Outputs are
latched on the rising edge of Write Enable, W. See
Figure 17
, and
Table 29
, for details of the
timing requirements.
3.2.3
Output Disable
The data outputs are high-impedance when the Output Enable, G, is at V
IH
.
3.2.4
Reset
During the Reset mode, all internal circuits are switched off, the device is deselected, and
the outputs are put at high-impedance. The device is in the Reset mode when RP is Low,
V
IL
. RP must be held Low, V
IL
for t
PLPH
. If RP goes Low, V
IL
, during a Program or Erase
operation, the operation is aborted, and the affected memory cells no longer contain valid
data. The memory can take up to t
PLRH
to abort a Program or Erase operation.
相關(guān)PDF資料
PDF描述
M50FLW040AK5G 4-Mbit (5 】 64 Kbyte blocks + 3 】 16 】 4 Kbyte sectors) 3-V supply Firmware Hub / low-pin count Flash memory
M50FLW040AK5P 4-Mbit (5 】 64 Kbyte blocks + 3 】 16 】 4 Kbyte sectors) 3-V supply Firmware Hub / low-pin count Flash memory
M50FLW040AK5TG 4-Mbit (5 】 64 Kbyte blocks + 3 】 16 】 4 Kbyte sectors) 3-V supply Firmware Hub / low-pin count Flash memory
M50FLW040AK5TP 4-Mbit (5 】 64 Kbyte blocks + 3 】 16 】 4 Kbyte sectors) 3-V supply Firmware Hub / low-pin count Flash memory
M50FLW040AN5G 4-Mbit (5 】 64 Kbyte blocks + 3 】 16 】 4 Kbyte sectors) 3-V supply Firmware Hub / low-pin count Flash memory
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M50FLW040AK1 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:4 Mbit (5 x 64KByte Blocks + 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory
M50FLW040AK1G 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:4 Mbit (5 x 64KByte Blocks + 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory
M50FLW040AK1P 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:4 Mbit (5 x 64KByte Blocks + 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory
M50FLW040AK1T 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:4 Mbit (5 x 64KByte Blocks + 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory
M50FLW040AK1TG 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:4 Mbit (5 x 64KByte Blocks + 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory
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