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BU1851GUW PDF预览

BU1851GUW

更新时间: 2024-01-09 04:53:49
品牌 Logo 应用领域
罗姆 - ROHM 微控制器和处理器外围集成电路uCs集成电路uPs集成电路编码器
页数 文件大小 规格书
13页 284K
描述
GPIO ICs Series Key Encoder IC

BU1851GUW 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Not Recommended零件包装代码:BGA
包装说明:ROHS COMPLIANT, VBGA-35针数:35
Reach Compliance Code:compliantHTS代码:8542.31.00.01
风险等级:5.61JESD-30 代码:S-PBGA-B35
JESD-609代码:e1长度:4 mm
端子数量:35最高工作温度:85 °C
最低工作温度:-30 °C封装主体材料:PLASTIC/EPOXY
封装代码:VFBGA封装形状:SQUARE
封装形式:GRID ARRAY, VERY THIN PROFILE, FINE PITCH峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:0.9 mm
最大供电电压:3.6 V最小供电电压:2.2 V
标称供电电压:3.3 V表面贴装:YES
技术:CMOS温度等级:OTHER
端子面层:Tin/Silver/Copper (Sn/Ag/Cu)端子形式:BALL
端子节距:0.5 mm端子位置:BOTTOM
处于峰值回流温度下的最长时间:10宽度:4 mm
uPs/uCs/外围集成电路类型:MICROPROCESSOR CIRCUITBase Number Matches:1

BU1851GUW 数据手册

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GPIO ICs Series  
Key Encoder IC  
BU1851GUW  
No.09098EAT03  
Description  
Key Encoder IC can monitor up to 8x8 matrix (64 keys), which means to be adaptable to Qwerty keyboard. We adopt the  
architecture that the information of the only key which status is changed, like push or release, is encoded into the 8 bits  
data. This can greatly reduce the CPU load which tends to become heavier as the number of keys increase.  
(Previously, all key's status is stored in the registers.)  
Furthermore, auto sleep function contribute to low power consumption, when no keys are pressed. It is also equipped with  
the various functions such as ghost key rejection, N-key Rollover, Built-in power on reset and oscillator.  
Features  
1) Monitor up to 64-matrix keys  
2) Under 5A Stand-by Current  
3) Built-in Power On Reset  
4) Ghost key rejection  
Absolute maximum ratings  
(Ta=25)  
Item  
Supply Voltage*1  
Input voltage  
Symbol  
Value  
-0.3 ~ +4.5  
-0.3 ~ VDD +0.3*1  
-55 ~ +125  
272*2  
Unit  
V
comment  
VDD  
VI  
V
Storage temperature range  
Package power  
Tstg  
PD  
mW  
This IC is not designed to be X-ray proof.  
*1 It is prohibited to exceed the absolute maximum ratings even including +0.3 V.  
*2 Package dissipation will be reduced each 2.72mW/ oC when the ambient temperature increases beyond 25 oC.  
Operating Conditions  
Limit  
Typ  
Item  
Symbol  
Unit  
Condition  
Min  
2.20  
-0.2  
Max  
3.60  
Supply voltage rangeVDD)  
VDD  
VIN  
3.30  
-
V
V
Input voltage range  
VDD+0.2  
Operating temperature range  
Topr  
-30  
25  
+85  
External clock  
Fclk  
Rxi  
0.8  
1.0  
1.2  
MHz  
CLKSEL=VDD  
External resistor  
118.8  
120  
121.2  
kΩ  
To Xi pin, when CLKSEL=VSS  
www.rohm.com  
© 2009 ROHM Co., Ltd. All rights reserved.  
2009.09 - Rev.A  
1/12  

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