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MAX7320

更新时间： 2024-02-23 19:07:59
品牌 Logo 应用领域
美信 - MAXIM /
页数 文件大小 规格书
21页 1109K
描述
I2C Port Expander with 12 Push-Pull Outputs and 4 Open-Drain I/Os

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中文翻译

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MAX7320 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：QFN
包装说明：HVQCCN, LCC16,.12SQ,20针数：16
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：6 weeks
风险等级：1.71JESD-30 代码：S-XQCC-N16
JESD-609代码：e3长度：3 mm
湿度敏感等级：1位数：8
I/O 线路数量：8端口数量：1
端子数量：16最高工作温度：125 °C
最低工作温度：-40 °C封装主体材料：UNSPECIFIED
封装代码：HVQCCN封装等效代码：LCC16,.12SQ,20
封装形状：SQUARE封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：260电源：1.8/5 V
认证状态：Not Qualified座面最大高度：0.8 mm
子类别：Parallel IO Port最大供电电压：5.5 V
最小供电电压：1.71 V标称供电电压：3.3 V
表面贴装：YES技术：BICMOS
温度等级：AUTOMOTIVE端子面层：Matte Tin (Sn)
端子形式：NO LEAD端子节距：0.5 mm
端子位置：QUAD处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：3 mmuPs/uCs/外围集成电路类型：PARALLEL IO PORT, GENERAL PURPOSE
Base Number Matches：1

MAX7320 数据手册

 浏览型号MAX7320的Datasheet PDF文件第6页浏览型号MAX7320的Datasheet PDF文件第7页浏览型号MAX7320的Datasheet PDF文件第8页浏览型号MAX7320的Datasheet PDF文件第10页浏览型号MAX7320的Datasheet PDF文件第11页浏览型号MAX7320的Datasheet PDF文件第12页 
2
I C Port Expander with 12 Push-Pull Outputs  
and 4 Open-Drain I/Os  
Table 3. MAX7327 Address Map for Outputs O8–O15  
PIN  
DEVICE ADDRESS  
OUTPUTS POWER-UP DEFAULT  
CONNECTION  
AD2 AD0  
SCL GND  
A6  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
A5  
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
A4  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
A3  
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
A2  
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
A1  
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
A0  
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
O15  
1
O14  
1
O13  
1
O12  
1
O11  
0
O10  
0
O9  
0
1
1
1
0
1
1
1
0
1
1
1
0
1
1
1
O8  
0
1
1
1
0
1
1
1
0
1
1
1
0
1
1
1
SCL  
SCL  
SCL  
V+  
1
1
1
1
1
1
SCL  
SDA  
1
1
1
1
1
1
1
1
1
1
1
1
SDA GND  
1
1
1
1
0
0
SDA  
SDA  
SDA  
V+  
1
1
1
1
1
1
SCL  
SDA  
1
1
1
1
1
1
1
1
1
1
1
1
GND GND  
0
0
0
0
0
0
GND  
V+  
0
0
0
0
1
1
GND  
SCL  
0
0
0
0
1
1
GND SDA  
0
0
0
0
1
1
V+  
V+  
V+  
V+  
GND  
V+  
1
1
1
1
0
0
1
1
1
1
1
1
SCL  
SDA  
1
1
1
1
1
1
1
1
1
1
1
1
A long read sequence (more than 2 bytes) can be used  
to poll the expander continuously without the overhead  
of resending the slave address. If more than 2 bytes  
are read from the expander, the expander repeatedly  
returns the 2 bytes of input port data followed by the  
transition flags. The inputs are repeatedly resampled  
and the transition flags repeatedly reset for each pair of  
bytes read. All changes that occur during a long read  
sequence are detected and reported.  
I/O Port Inputs  
I/O port inputs switch at CMOS logic levels as deter-  
mined by the expander’s supply voltage, and are over-  
voltage tolerant to +6V, independent of the expander’s  
supply voltage.  
I/O Port Input Transition Detection  
All I/O ports configured as inputs are monitored for  
changes since the expander was last accessed  
through the serial interface. The state of the ports is  
stored in an internal “snapshot” register for transition  
monitoring. The snapshot is continuously compared  
with the actual input conditions, and if a change is  
detected for any port input, INT is asserted to signal a  
state change. The input ports are sampled (internally  
latched into the snapshot register) and the old transi-  
The INT output is not reasserted during a read  
sequence to avoid recursive reentry into an interrupt  
service routine. Instead, if a data change occurs that  
would normally cause the INT output to be set, the INT  
assertion is delayed until the STOP condition. INT is not  
reasserted upon a STOP condition if the changed input  
data is read before the STOP occurs. The INT logic  
ensures that unnecessary interrupts are not asserted,  
yet data changes are detected and reported no matter  
when the change occurs.  
2
tion flags cleared during the I C acknowledge of every  
MAX7327 read and write access. The previous port  
transition flags are read through the serial interface as  
the second byte of a 2-byte read sequence.  
_______________________________________________________________________________________  
9
1...6789101112...21

中文翻译

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