收藏本站
BU9833GUL-W (2Kbit)
Datasheet
● 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, function of POR circuit and LVCC circuit are equipped. To assure the action,
observe the following conditions at power on.
1. Set SDA= “H” and SCL = “L” or “H”.
2. Start power source so as to satisfy the recommended conditions of t R , t OFF , and Vbot for operating POR circuit.
t R
V CC
Recommended conditions of t R , t OFF , Vbot
t R
t OFF
Vbot
0
t OFF
Vbot
10ms or below
100ms or below
10ms or higher
10ms or higher
0.3V or below
0.2V or below
Figure 52. 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 condition 1 cannot be observed. When SDA becomes “L” at power on.
→
Control SCL and SDA as shown below, to make SCL and, “H” and “H”.
V CC
tLOW
SCL
SDA
After Vcc becomes stable
After Vcc becomes stable
tDH
tSU:DAT
tSU:DAT
54
Figure 53. When SCL =”H” and SDA = “L”
Figure 54. 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 (Page 16).
c) In the case when the above conditions 1 and 2 cannot be observed.
→ Carry out a), and then carry out b).
● Low voltage malfunction prevention function
LVCC circuit prevents data rewrite action at low power, and prevents wrong write. At LVCC voltage (Typ. = 1.2V) or below, it
prevent data rewrite.
● Vcc noise countermeasures
○ Bypass capacitor
When noise or surge gets in the power source line, malfunction may occur, therefore, for removing these, it is
recommended to attach a by pass capacitor (0.1 μ F) between IC Vcc and GND. At that moment, attach it as close to IC as
possible.
And, it is also recommended to attach a bypass capacitor between board Vcc and GND.
www.rohm.com
? 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 15 ? 001
21/24
TSZ02201-0R2R0G100450-1-2
04.SEP.2012 Rev.001
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
BU9844GUL-WE2 IC EEPROM 16KBIT 2WIRE VCSP50L1
BU9847GUL-WE2 IC EEPROM 4KBIT 2WIRE VCSP50L1
BU9880GUL-WE2 IC EEPROM 64KBIT 2WIRE VCSP50L1
BU9882FV-WE2 IC EEPROM 2KBIT 400KHZ 14SSOP
BU9883FV-WE2 IC EEPROM 6KBIT 400KHZ SSOP16
BU9889GUL-WE2 IC EEPROM 8KBIT 2WIRE VCSP50L1
BU9891GUL-WE2 IC EEPROM 4KBIT VCSP T/R
BU9897GUL-WE2 IC EEPROM SERIAL VCSP50L2
相关代理商/技术参数
BU9844GUL-W 制造商:ROHM 制造商全称:Rohm 功能描述:WL-CSP EEPROM family I2C BUS
BU9844GUL-W_10 制造商:ROHM 制造商全称:Rohm 功能描述:WL-CSP EEPROM family I2C BUS
BU9844GUL-WE2 功能描述:电可擦除可编程只读存储器 电可擦除可编程只读存储器 Serial-2Wire 16Kb 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
BU9847GUL-W 制造商:ROHM 制造商全称:Rohm 功能描述:WL-CSP EEPROM family I2C BUS
BU9847GUL-W_10 制造商:ROHM 制造商全称:Rohm 功能描述:WL-CSP EEPROM family I2C BUS
BU9847GUL-WE2 功能描述:电可擦除可编程只读存储器 电可擦除可编程只读存储器 Serial-2Wire 4Kb 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
BU98570CH-3BW 制造商:ROHM 制造商全称:Rohm 功能描述:65,536 Colors 98RGB x 70 STN LCD control driver
BU98582CH-3BW 制造商:ROHM 制造商全称:Rohm 功能描述:65,536 Colors 104RGB x 82 STN LCD control driver