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| 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： | 31/53页 |
| 文件大小： | 278K |
| 代理商： | M50FW040K5G |
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M50FW040
Firmware hub (FWH) interface Configuration Registers
31/53
6.1.3
Lock Down
The Lock Down Bit provides a mechanism for protecting software data from simple hacking
and malicious attack. When the Lock Down Bit is set, ‘1’, further modification to the Write
Lock, Read Lock and Lock Down Bits cannot be performed. A reset or power-up is required
before changes to these bits can be made. When the Lock Down Bit is reset, ‘0’, the Write
Lock, Read Lock and Lock Down Bits can be changed.
6.2
Firmware Hub (FWH) General-Purpose Input Register
The Firmware Hub (FWH) General Purpose Input Register holds the state of the Firmware
Hub Interface General Purpose Input pins, FGPI0-FGPI4. When this register is read, the
state of these pins is returned. This register is read-only and writing to it has no effect.
The signals on the Firmware Hub Interface General Purpose Input pins should remain
constant throughout the whole Bus Read cycle in order to guarantee that the correct data is
read.
6.3
Manufacturer Code Register
Reading the Manufacturer Code Register returns the manufacturer code for the memory.
The manufacturer code for STMicroelectronics is 20h. This register is read-only and writing
to it has no effect.
6.4
Device Code Register
Reading the Device Code Register returns the device code for the memory, 2Ch. This
register is read-only and writing to it has no effect.
6.5
Firmware Hub (FWH) General-Purpose Input Register
The Firmware Hub (FWH) General Purpose Input Register holds the state of the Firmware
Hub Interface General Purpose Input pins, FGPI0-FGPI4. When this register is read, the
state of these pins is returned. This register is read-only and writing to it has no effect.
The signals on the Firmware Hub Interface General Purpose Input pins should remain
constant throughout the whole Bus Read cycle in order to guarantee that the correct data is
read.
6.6
Manufacturer Code Register
Reading the Manufacturer Code Register returns the manufacturer code for the memory.
The manufacturer code for STMicroelectronics is 20h. This register is read-only and writing
to it has no effect.
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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