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參數(shù)資料
| 型號(hào)： | FM25L04 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | DRAM |
| 英文描述： | 4Kb FRAM Serial 3V Memory |
| 中文描述： | 4Kb的鐵電串行3V的記憶 |
| 文件頁數(shù)： | 2/12頁 |
| 文件大?。?/td> | 187K |
| 代理商： | FM25L04 |
FM25L04
Rev. 2.0
May 2005
Page 2 of 12
Instruction Decode
Clock Generator
Control Logic
Write Protect
Instruction Register
Address Register
Counter
`
128 x 32
FRAM Array
9
Data I/O Register
8
Nonvolatile Status
Register
3
WP
CS
HOLD
SCK
SO
SI
Figure 1. Block Diagram
Pin Descriptions
Pin Name
/CS
I/O
Input
Description
Chip Select: This active low input activates the device. When high, the device enters
low-power standby mode, ignores other inputs, and all outputs are tri-stated. When
low, the device internally activates the SCK signal. A falling edge on /CS must occur
prior to every op-code.
Serial Clock: All I/O activity is synchronized to the serial clock. Inputs are latched on
the rising edge and outputs occur on the falling edge. Since the device is static, the
clock frequency may be any value between 0 and 14 MHz and may be interrupted at
any time.
Hold: The /HOLD pin is used when the host CPU must interrupt a memory operation
for another task. When /HOLD is low, the current operation is suspended. The device
ignores any transition on SCK or /CS. All transitions on /HOLD must occur while
SCK is low.
Write Protect: This active low pin prevents write operations to the memory array or
the status register. A complete explanation of write protection is provided below.
Serial Input: All data is input to the device on this pin. The pin is sampled on the
rising edge of SCK and is ignored at other times. It should always be driven to a valid
logic level to meet IDD specifications.
* SI may be connected to SO for a single pin data interface.
Serial Output: This is the data output pin. It is driven during a read and remains tri-
stated at all other times including when /HOLD is low. Data transitions are driven on
the falling edge of the serial clock.
* SO may be connected to SI for a single pin data interface.
Power Supply (2.7V to 3.6V)
Ground
SCK
Input
/HOLD
Input
/WP
Input
SI
Input
SO
Output
VDD
VSS
Supply
Supply
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| FM25L04-G | 4Kb FRAM Serial 3V Memory |
| FM25L04-S | 4Kb FRAM Serial 3V Memory |
| FM25W256 | 256Kb FRAM Wide Voltage Serial Memory |
| FM25W256-G | 256Kb FRAM Wide Voltage Serial Memory |
| FM25W256-S | 256Kb FRAM Wide Voltage Serial Memory |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FM25L04B | 制造商:RAMTRON 制造商全稱:RAMTRON 功能描述:4Kb Serial 3V F-RAM Memory |
| FM25L04B-DG | 功能描述:F-RAM 4Kb Serial SPI 3V FRAM RoHS:否 存儲(chǔ)容量:512 Kbit 組織:64 K x 8 接口:SPI 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube 制造商:Cypress Semiconductor |
| FM25L04B-DGTR | 功能描述:F-RAM 4Kb Serial SPI 3V FRAM RoHS:否 存儲(chǔ)容量:512 Kbit 組織:64 K x 8 接口:SPI 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube 制造商:Cypress Semiconductor |
| FM25L04B-G | 功能描述:F-RAM 4Kb Serial SPI 3V FRAM RoHS:否 存儲(chǔ)容量:512 Kbit 組織:64 K x 8 接口:SPI 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube 制造商:Cypress Semiconductor |
| FM25L04B-GA | 功能描述:F-RAM 4K Serial SPI 3V FRAM RoHS:否 存儲(chǔ)容量:512 Kbit 組織:64 K x 8 接口:SPI 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube 制造商:Cypress Semiconductor |
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