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参数资料
| 型号： | M50FW040K5P |
| 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： | 12/53页 |
| 文件大小： | 278K |
| 代理商： | M50FW040K5P |
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Signal descriptions
M50FW040
12/53
2
Signal descriptions
There are two different bus interfaces available on this part. The active interface is selected
before power-up or during Reset using the Interface Configuration Pin, IC.
The signals for each interface are discussed in the
Firmware hub (FWH) signal descriptions
section and the
Address/Address multiplexed (A/A Mux) signal descriptions
section below.
The supply signals are discussed in the
Supply signal descriptions
section below.
2.1
Firmware hub (FWH) signal descriptions
For the Firmware Hub (FWH) Interface see <Blue>Figure 1., Logic diagram (FWH
interface), and <Blue>Table 1., Signal names (FWH interface).
2.1.1
Input/Output communications (FWH0-FWH3)
All Input and Output Communication with the memory take place on these pins. Addresses
and Data for Bus Read and Bus Write operations are encoded on these pins.
2.1.2
Input communication frame (FWH4)
The Input Communication Frame (FWH4) signals the start of a bus operation. When Input
Communication Frame is Low, V
IL
, on the rising edge of the Clock a new bus operation is
initiated. If Input Communication Frame is Low, V
IL
, during a bus operation then the
operation is aborted. When Input Communication Frame is High, V
IH
, the current bus
operation is proceeding or the bus is idle.
2.1.3
Identification inputs (ID0-ID3)
The Identification Inputs select the address that the memory responds to. Up to 16
memories can be addressed on a bus. For an address bit to be ‘0’ the pin can be left floating
or driven Low, V
IL
; an internal pull-down resistor is included with a value of R
IL
. For an
address bit to be ‘1’ the pin must be driven High, V
IH
; there will be a leakage current of I
LI2
through each pin when pulled to V
IH
; see <Blue>Table 18.
By convention the boot memory must have address ‘0000’ and all additional memories take
sequential addresses starting from ‘0001’.
2.1.4
General-purpose inputs (FGPI0-FGPI4)
The General Purpose Inputs can be used as digital inputs for the CPU to read. The General
Purpose Inputs Register holds the values on these pins. The pins must have stable data
from before the start of the cycle that reads the General Purpose Input Register until after
the cycle is complete. These pins must not be left to float, they should be driven Low, V
IL,
or
High, V
IH
.
相关PDF资料 |
PDF描述 |
|---|---|
| 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 |
| M50FW040N5TG | 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 |
|---|---|
| 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 |
| M50FW040N1 | 功能描述:闪存 3.6V 4M (512Kx8) 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 |
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