参数资料
| 型号： | BR24L32FJ-WE2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 36/41页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 32KBIT 400KHZ 8SOP |
| 标准包装： | 1 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 32K (4K x 8) |
| 速度： | 400kHz |
| 接口： | I²C，2 线串口 |
| 电源电压： | 1.8 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOP-J |
| 包装： | 标准包装 |
| 产品目录页面： | 1379 (CN2011-ZH PDF) |
| 其它名称： | BR24L32FJ-WE2DKR |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页当前第36页第37页第38页第39页第40页第41页
BR24L □□ -W Series,BR24S □□□ -W Series
Technical Note
● I 2 C BUS input / output circuit
○ Input (A0, A1, A2, SCL, WP)
Fig.54 Input pin circuit diagram
○ Input/Output (SDA)
Fig.55 Input /output pin circuit diagram
● Notes on power ON
At power on, in IC internal circuit and set, Vcc rises through unstable low voltage area, and IC inside is not completely reset,
and malfunction may occur. To prevent this, functions of POR circuit and LVCC circuit are equipped. To assure the action,
observe the following condition at power on.
1. Set SDA = 'H' and SCL ='L' or 'H'
2. Start power source so as to satisfy the recommended conditions of tR, tOFF, and Vbot for operating POR circuit.
V CC
tR
Recommended conditions of tR,tOFF,Vbot
tR
tOFF
Vbot
0
tOFF
Vbot
10ms or below
100ms or below
10ms or longer
10ms or longer
0.3V or below
0.2V or below
Fig.56 Rise waveform diagram
3. Set SDA and SCL so as not to become 'Hi-Z'.
When the above conditions 1 and 2 cannot be observed, take the following countermeasures.
a) In the case when the above conditions 1 cannot be observed. When SDA becomes 'L' at power on .
→ Control SCL and SDA as shown below, to make SCL and SDA, 'H' and 'H'.
V CC
tLOW
SCL
SDA
After Vcc becomes stable
After Vcc becomes stable
tDH
tSU:DAT
tSU:DAT
Fig.57 When SCL='H' and SDA='L'
Fig.58 When SCL='H' and SDA='L'
b) In the case when the above condition 2 cannot be observed.
→ After power source becomes stable, execute software reset(P26).
c) In the case when the above conditions 1 and 2 cannot be observed.
→ Carry out a), and then carry out b).
www.rohm.com
? 2009 ROHM Co., Ltd. All rights reserved.
36/40
2009.09 - Rev.D
相关PDF资料 |
PDF描述 |
|---|---|
| P1AFS600-2FGG484I | IC FPGA PIGEON POINT 484-FBGA |
| M1AFS600-2FG484I | IC FPGA 4MB FLASH 600K 484-FBGA |
| AMC31DRTS-S93 | CONN EDGECARD 62POS DIP .100 SLD |
| P1AFS600-2FG484I | IC FPGA PIGEON POINT 484-FBGA |
| AFS600-2FG484I | IC FPGA 4MB FLASH 600K 484FBGA |
相关代理商/技术参数 |
参数描述 |
|---|---|
| BR24L32FJ-WTR | 制造商:ROHM 制造商全称:Rohm 功能描述:High Reliability Series EEPROMs I2C BUS |
| BR24L32FV | 制造商:未知厂家 制造商全称:未知厂家 功能描述:EEPROM |
| BR24L32FVJ-WE2 | 制造商:ROHM 制造商全称:Rohm 功能描述:High Reliability Series EEPROMs I2C BUS |
| BR24L32FVJ-WTR | 制造商:ROHM 制造商全称:Rohm 功能描述:High Reliability Series EEPROMs I2C BUS |
| BR24L32FVM-WE2 | 制造商:ROHM 制造商全称:Rohm 功能描述:High Reliability Series EEPROMs I2C BUS |
发布紧急采购，3分钟左右您将得到回复。