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参数资料
| 型号： | BR34E02FVT-WE2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 3/19页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM SPD 2KB I2C 8TSSOP |
| 标准包装： | 3,000 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 2K (256 x 8) |
| 速度： | 400kHz |
| 接口： | I²C，2 线串口 |
| 电源电压： | 1.7 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-TSSOP |
| 供应商设备封装： | 8-TSSOP |
| 包装： | 带卷 (TR) |
BR34E02FVT-W, BR34E02NUX-W
Technical Note
■ Fast / Standard Modes
Fast mode and Standard mode differ only in operation frequency. Operations performed at 100kHz are considered in
"Standard-mode", while those conducted at 400kHz are in "Fast-mode".
Please note that these clock frequencies are maximum values. At lower power supply voltage it is difficult to operate at high speeds.
The EEPROM can operate at 400kHz, between 2.5V and 3.6V, and at 100kHz from 1.7V-2.5V.
● Synchronous Data Timing
tR
tF
tHIGH
SCL
SCL
tHD:STA
tSU:DAT tLOW
tHD:DAT
SDA
tSU:STA
tHD:STA
tSU:STO
(IN)
SDA
(OUT)
tBUF
tPD
tDH
SDA
START BIT
STOP BIT
Fig.1-(a) Synchronous Data Timing
○ SDA data is latched into the chip at the rising edge ○
of SCL clock.
○ Output data toggles at the falling edge of SCL clock.
SCL
Fig.1-(b) Start/Stop Bit Timing
SCL
DATA(1)
DATA(n)
SDA
D0
ACK
SDA
D1
D0
ACK
ACK
ｔ WR
WRITE DATA(n)
STOP CONDITION
t WR
START CONDITION
WP
tSU ： WP
Stop Condition
ｔ HD ： WP
SCL
Fig.1-(c) Write Cycle Timing
Fig.1-(d) WP Timing Of The Write Operation
DATA(1)
DATA(n)
SDA
D1
D0
ACK
ACK
tHIGH:WP
tWR
WP
Fig.1-(e) WP Timing Of The Write Cancel Operation
○ For WRITE operation, WP must be "Low" from the rising edge of the
clock (which takes in D0 of first byte) until the end of tWR. (See
Fig.1-(d) ) During this period, WRITE operation can be canceled by
setting WP "High". （ See Fig.1-(e) ）
○ When WP is set to "High" during tWR, WRITE operation is
immediately ceased, making the data unreliable. It must then be
re-written.
www.rohm.com
? 2009 ROHM Co., Ltd. All rights reserved.
3/18
2009.09 - Rev.B
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相关代理商/技术参数 |
参数描述 |
|---|---|
| BR34E02FVT-WTR | 制造商:ROHM 制造商全称:Rohm 功能描述:DDR/DDR2 (For memory module) SPD Memory |
| BR34E02NUX-3E2 | 制造商:ROHM 制造商全称:Rohm 功能描述:Serial EEPROM Series Standard EEPROM Plug & Play EEPROM |
| BR34E02NUX-3TR | 制造商:ROHM 制造商全称:Rohm 功能描述:Serial EEPROM Series Standard EEPROM Plug & Play EEPROM |
| BR34E02NUX-W | 制造商:ROHM Semiconductor 功能描述: |
| BR34E02NUX-WE2 | 制造商:ROHM 制造商全称:Rohm 功能描述:DDR/DDR2 (For memory module) SPD Memory |
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