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LM8322JGR8 PDF预览

LM8322JGR8

更新时间： 2024-11-04 05:42:23
品牌 Logo 应用领域
美国国家半导体 - NSC 微控制器和处理器外围集成电路uCs集成电路uPs集成电路
页数 文件大小 规格书
42页 823K
描述
Mobile I/O Companion Supporting Key-Scan, I/O Expansion, PWM, and ACCESS.bus Host Interface

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LM8322JGR8 技术参数

是否Rohs认证： 符合生命周期：Transferred
包装说明：MICRO ARRAY-36Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.31.00.01
风险等级：5.09Is Samacsys：N
JESD-30 代码：S-PBGA-B36JESD-609代码：e1
长度：3.5 mm湿度敏感等级：1
端子数量：36最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：TFBGA封装等效代码：BGA36,6X6,20
封装形状：SQUARE封装形式：GRID ARRAY, THIN PROFILE, FINE PITCH
电源：1.8 V认证状态：Not Qualified
座面最大高度：1.1 mm子类别：Other Microprocessor ICs
最大压摆率：3 mA最大供电电压：1.98 V
最小供电电压：1.62 V标称供电电压：1.8 V
表面贴装：YES技术：CMOS
温度等级：INDUSTRIAL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宽度：3.5 mm
uPs/uCs/外围集成电路类型：MICROPROCESSOR CIRCUITBase Number Matches：1

LM8322JGR8 数据手册

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May 2007  
LM8322  
Mobile I/O Companion Supporting Key-Scan, I/O  
Expansion, PWM, and ACCESS.bus Host Interface  
Three host-programmable PWM outputs useful for smooth  
LED brightness modulation.  
Supports general-purpose I/O expansion on pins not  
otherwise used for keypad interface.  
Key-scan event storage in a FIFO buffer for up to 15  
events.  
Key events, errors, and dedicated hardware interrupts  
request host service by asserting the IRQ output.  
The correct reception of a command may be assumed, if  
no error is reported from the LM8322 after receiving a  
command.  
Wake-up from Halt mode on any matrix key-scan event,  
any use of the SF keys, or any activity on the ACCESS.bus  
interface.  
■
■
■
■
■
1.0 General Description  
The LM8322 Mobile I/O Companion is a dedicated device to  
unburden a host processor from scanning a matrix-addressed  
keypad. In addition, the LM8322 provides general-purpose  
I/O expansion, and PWM outputs useful for dynamic LED  
brightness modulation.  
It communicates with the host through an I2C-compatible  
ACCESS.bus interface. An interrupt output is available for  
signaling key-press and key-release events. Communication  
frequencies up to 400 kHz (Fast-mode) bus speed are sup-  
ported. The LM8322 supports a predefined set of commands.  
These commands enable a host device to keep control over  
all functions.  
■
2.0 Features  
3.0 Applications  
Key Features  
Mobile phones  
■
■
■
Supports keypad matrices of up to 8 × 12 keys plus 8  
■
Personal Digital Assistants (PDAs)  
special-function (SF) keys for a total of 104 keys. SF keys  
pull keypad scan inputs directly to ground, rather than  
connecting to a keypad scan output.  
Smart handheld devices  
Personal media players  
■
Supports I2C-compatible ACCESS.bus interface in slave  
mode up to 400 kHz (Fast-mode).  
■
4.0 Block Diagram  
30013620  
© 2007 National Semiconductor Corporation  
300136  
www.national.com  
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