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参数资料
| 型号： | M50FW040K5G |
| 厂商： | 意法半导体 |
| 英文描述： | 4-Mbit (512 Kb x8, uniform block) 3-V supply firmware hub Flash memory |
| 中文描述： | 4兆位（512 KB的× 8，均匀块）3 - V电源供电的闪存固件枢纽 |
| 文件页数： | 19/53页 |
| 文件大小： | 278K |
| 代理商： | M50FW040K5G |
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M50FW040
Bus operations
19/53
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) 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 output the contents of the Memory Array, the Electronic
Signature and 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. Then Write Enable (W) and Interface Reset (RP)
must be High, V
IH
, and Output Enable, G, Low, V
IL
, in order to perform a Bus Read
operation. The Data Inputs/Outputs will output the value, see
Figure 13
, and
Table 22: A/A
Mux interface read AC characteristics
, for details of when the output becomes valid.
3.2.2
Bus Write
Bus Write operations 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 14: A/A Mux interface Write AC waveforms
, and
Table 23:
A/A Mux interface Write AC characteristics
, 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 Reset mode all internal circuits are switched off, the memory is deselected and the
outputs are put in high-impedance. The memory is in Reset mode when RP is Low, V
IL
. RP
must be held Low, V
IL
for t
PLPH
. If RP is goes Low, V
IL
, during a Program or Erase operation,
the operation is aborted and the memory cells affected no longer contain valid data; the
memory can take up to t
PLRH
to abort a Program or Erase operation.
相关PDF资料 |
PDF描述 |
|---|---|
| M50FW040K5P | 4-Mbit (512 Kb x8, uniform block) 3-V supply firmware hub Flash memory |
| M50FW040K5TG | 4-Mbit (512 Kb x8, uniform block) 3-V supply firmware hub Flash memory |
| M50FW040K5TP | 4-Mbit (512 Kb x8, uniform block) 3-V supply firmware hub Flash memory |
| M50FW040N5G | 4-Mbit (512 Kb x8, uniform block) 3-V supply firmware hub Flash memory |
| M50FW040N5P | 4-Mbit (512 Kb x8, uniform block) 3-V supply firmware hub Flash memory |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M50FW040K5P | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:4-Mbit (512 Kb x8, uniform block) 3-V supply firmware hub Flash memory |
| M50FW040K5T | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:4 Mbit 512Kb x8, Uniform Block 3V Supply Firmware Hub Flash Memory |
| M50FW040K5TG | 功能描述:闪存 SERIAL FLASH RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel |
| M50FW040K5TP | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:4-Mbit (512 Kb x8, uniform block) 3-V supply firmware hub Flash memory |
| M50FW040N | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:4 Mbit 512Kb x8, Uniform Block 3V Supply Firmware Hub Flash Memory |
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