参数资料
| 型号： | BR25L020FVT-WE2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 6/17页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 2KBIT 5MHZ 8TSSOP |
| 标准包装： | 1 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 2K (256 x 8) |
| 速度： | 5MHz |
| 接口： | SPI 3 线串行 |
| 电源电压： | 1.8 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 8-TSSOP-B |
| 包装： | 标准包装 |
| 产品目录页面： | 1379 (CN2011-ZH PDF) |
| 其它名称： | BR25L020FVT-WE2DKR |
BR25L010-W, BR25L020-W, BR25L040-W, BR25L080-W, BR25L160-W, BR25L320-W, BR25L640-W
Technical Note
Features
Status registers
This IC has status registers. The status registers are of 8 bits and express the following parameters.
BP0 and BP1 can be set by write status register command. These 2 bits are memorized into the EEPROM, therefore are
valid even when power source is turned off.
Rewrite characteristics and data hold time are same as characteristics of the EEPROM.
WEN can be set by write enable command and write disable command. WEN becomes write disable status when power
source is turned off. R/B is for write confirmation, therefore cannot be set externally.
The value of status register can be read by read status command.
Status registers
Product number
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
BR25L010-W
BR25L020-W
1
1
1
1
BP1
BP0
WEN
-
R/B
BR25L040-W
BR25L080-W
BR25L160-W
WPEN
0
0
0
BP1
BP0
WEN
-
R/B
BR25L320-W
BR25L640-W
bit
WPEN
BP1
BP0
Memory
location
EEPROM
EEPROM
Function
WP pin enable / disable designation bit
WPEN = 0 = invalid
WPEN = 1 = valid
EEPROM write disable block designation bit
Contents
This enables / disables the functions
of WP pin.
This designates the write disable area
of EEPROM. Write designation areas
of product numbers are shown below.
Write and write status register write enable / disable status confirmation bit
R/B=0=READY
R/B=1=BUSY
WEN
-
R/B
Register
Register
WEN = 0 = prohibited
WEN = 1 = permitted
Write cycle status (READY / BUSY) status confirmation bit
-
-
Write disable block setting
Write disable block
BP1
0
0
1
1
BP0
0
1
0
1
BR25L010-W
None
60h-7Fh
40h-7Fh
00h-7Fh
BR25L020-W
None
C0h-FFh
80h-FFh
00h-FFh
BR25L040-W
None
180h-1FFh
100h-1FFh
000h-1FFh
BR25L080-W
None
300h-3FFh
200h-3FFh
000h-3FFh
BR25L160-W
None
600h-7FFh
400h-7FFh
000h-7FFh
BR25L320-W
None
C00h-FFFh
800h-FFFh
000h-FFFh
BR25L640-W
None
1800h-1FFFh
1000h-1FFFh
0000h-1FFFh
WP pin
By setting WP = LOW, write command is prohibited. As for BR25L080, 160, 320, 640-W, only when WPEN bit is set "1",
the WP pin functions become valid. And the write command to be disabled at this moment is WRSR. As for BR25L010,
020, 040-W, both WRITE and WRSR commands are prohibited.
However, when write cycle is in execution, no interruption can be made.
Product number
BR25L010-W
BR25L020-W
BR25L040-W
BR25L080-W
BR25L160-W
BR25L320-W
WRSR
Prohibition
possible
Prohibition
possible but
WPEN bit "1"
WRITE
Prohibition
possible
Prohibition
impossible
BR25L640-W
HOLD pin
By HOLD pin, data transfer can be interrupted. When SCK = "1", by making HOLD from "1" into "0", data transfer to
EEPROM is interrupted. When SCK = "0", by making HOLD from "0" into "1", data transfer is restarted.
www.rohm.com
? 2010 ROHM Co., Ltd. All rights reserved.
6/16
2010.07 - Rev. B
相关PDF资料 |
PDF描述 |
|---|---|
| A3P1000-1FG256T | IC FPGA 1KB FLASH 1M 256-FBGA |
| A54SX72A-FGG484 | IC FPGA SX-A 108K 484-FBGA |
| A54SX72A-FG484 | IC FPGA SX-A 108K 484-FBGA |
| APA450-FGG144I | IC FPGA PROASIC+ 450K 144-FBGA |
| APA450-FG144I | IC FPGA PROASIC+ 450K 144-FBGA |
相关代理商/技术参数 |
参数描述 |
|---|---|
| BR25L020FV-W | 制造商:ROHM 制造商全称:Rohm 功能描述:SPI BUS 2Kbit (256 x 8bit) EEPROM |
| BR25L020FV-WE2 | 功能描述:电可擦除可编程只读存储器 SPI 2K BIT RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 |
| BR25L020F-W | 制造商:ROHM 制造商全称:Rohm 功能描述:SPI BUS 2Kbit (256 x 8bit) EEPROM |
| BR25L020FWE2 | 制造商:ROHM Semiconductor 功能描述:EEPROM,SPI BUS,2kb,x8,SOP8 |
| BR25L020F-WE2 | 功能描述:电可擦除可编程只读存储器 SPI 2K BIT RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 |
发布紧急采购，3分钟左右您将得到回复。