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MAX7349AWG

更新时间： 2024-01-29 04:07:40
品牌 Logo 应用领域
美信 - MAXIM 开关控制器
页数 文件大小 规格书
29页 348K
描述
Microprocessor Circuit, BICMOS, PDSO24, 0.300 INCH, MS-013AD, SOIC-24

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MAX7349AWG 技术参数

是否Rohs认证： 不符合生命周期：Active
Reach Compliance Code：not_compliant风险等级：5.88
JESD-30 代码：R-PDSO-G24JESD-609代码：e0
端子数量：24最高工作温度：125 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP24,.4
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
电源：2.5/3.3 V认证状态：Not Qualified
子类别：Parallel IO Port最大压摆率：0.1 mA
表面贴装：YES技术：BICMOS
温度等级：AUTOMOTIVE端子面层：Tin/Lead (Sn/Pb)
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUALBase Number Matches：1

MAX7349AWG 数据手册

 浏览型号MAX7349AWG的Datasheet PDF文件第2页浏览型号MAX7349AWG的Datasheet PDF文件第3页浏览型号MAX7349AWG的Datasheet PDF文件第4页浏览型号MAX7349AWG的Datasheet PDF文件第6页浏览型号MAX7349AWG的Datasheet PDF文件第7页浏览型号MAX7349AWG的Datasheet PDF文件第8页 
2-Wire Interfaced Low-EMI Key Switch  
and Sounder Controllers  
8/MAX7349  
Pin Description  
PIN  
NAME  
FUNCTION  
MAX7347 MAX7347  
MAX7349 MAX7349  
MAX7348  
(QSOP)  
(TQFN)  
(QSOP)  
(TQFN)  
1
2
15  
16  
1
1
2
2
3
23  
24  
1
ROW0  
ROW1  
ROW2  
ROW3  
ROW4  
ROW5  
ROW6  
ROW7  
Row Input from Key Matrix. Leave open circuit if unused.  
Row Input from Key Matrix. Leave open circuit if unused.  
Row Input from Key Matrix. Leave open circuit if unused.  
Row Input from Key Matrix. Leave open circuit if unused.  
Row Input from Key Matrix. Leave open circuit if unused.  
Row Input from Key Matrix. Leave open circuit if unused.  
Row Input from Key Matrix. Leave open circuit if unused.  
Row Input from Key Matrix. Leave open circuit if unused.  
3
3
4
4
2
4
5
2
5
3
7
8
5
6
4
8
9
6
7
5
9
10  
11  
14  
15  
16  
18  
20  
21  
22  
7
8
6
10  
11  
12  
13  
15  
17  
18  
19  
8
9
7
11  
12  
13  
15  
17  
18  
19  
COL2/PORT2 Column Output to Key Matrix or GPO  
10  
11  
12  
13  
14  
15  
8
COL1  
COL0  
GND  
SDA  
SCL  
Column Output to Key Matrix  
Column Output to Key Matrix  
Ground  
9
10  
11  
12  
13  
2
I C-Compatible Serial Data I/O  
2
I C-Compatible Serial Clock Input  
INT  
Active-Low Interrupt Output. Output is open drain.  
Positive Supply Voltage. Bypass V+ to GND with a  
0.047µF or higher ceramic capacitor.  
16  
14  
20  
23  
20  
V+  
—
—
—
—
5
6
6
7
3
4
COL3/PORT3 Column Output to Key Matrix or GPO  
COL4/PORT4 Column Output to Key Matrix or GPO  
Sounder Driver Output. Typically connect a piezo-ceramic  
—
—
—
—
14  
16  
17  
19  
14  
16  
SOUNDER sounder or other transducer from this output to ground.  
Output is push-pull.  
Address Input 0. Sets device slave address. Connect to  
AD0  
GND, V+, SDA, or SCL to give four logic combinations.  
See Table 3.  
—
—
—
—
—
—
—
—
—
—
—
—
1
22  
9
COL7/PORT7 Column Output to Key Matrix or GPO  
COL6/PORT6 Column Output to Key Matrix or GPO  
COL5/PORT5 Column Output to Key Matrix or GPO  
12  
13  
24  
10  
21  
ALERT  
Alert Input. Connect to GND or V+ if unused.  
Exposed Paddle. Internally connected to GND. Connect to  
a large ground plane to maximize thermal performance.  
—
EP  
—
—
EP  
EP  
The piezo sounder controller generates a variety of  
audio tones. Tones are programmable for frequency  
and duration, and may be intermittent, two tone, or con-  
tinuous. The piezo sounder controller can be config-  
ured to deliver an automatic, customizable sound on  
every key press to provide a udible key-click feedback.  
Detailed Description  
The MAX7347/MAX7348/MAX7349 are microprocessor  
peripherals that combine a low-noise key-switch inter-  
face with a piezo sounder controller. Up to 64 key  
switches can be monitored and debounced with optional  
autorepeat, and the key events are presented in an  
eight-deep FIFO. Key-switch functionality can be traded  
to provide up to one (MAX7347), three (MAX7348), or six  
(MAX7349) open-drain logic outputs. (Table 1).  
Interrupt requests can be configured to be issued on  
every key-press event, or can be limited to a maximum  
rate to prevent overloading the microprocessor with  
_______________________________________________________________________________________  
5
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