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MAX7370EWA+

更新时间： 2024-11-30 11:51:47
品牌 Logo 应用领域
美信 - MAXIM 驱动器驱动程序和接口开关接口集成电路信息通信管理控制器
页数 文件大小 规格书
37页 1846K
描述
8 x 8 Key-Switch Controller and LED Driver/GPIOs

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中文翻译

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MAX7370EWA+ 技术参数

是否Rohs认证： 符合生命周期：Active
零件包装代码：BGA包装说明：VFBGA, BGA25,5X5,16
针数：25Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.31.00.01
风险等级：5.41Is Samacsys：N
接口集成电路类型：INTERFACE CIRCUITJESD-30 代码：S-PBGA-B25
长度：2.09 mm湿度敏感等级：1
功能数量：1端子数量：25
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：VFBGA
封装等效代码：BGA25,5X5,16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）：NOT SPECIFIED
电源：1.8/3.3 V认证状态：Not Qualified
座面最大高度：0.69 mm子类别：Display Drivers
最大供电电压：3.6 V最小供电电压：1.62 V
标称供电电压：3.3 V表面贴装：YES
技术：BICMOS温度等级：INDUSTRIAL
端子形式：BALL端子节距：0.4 mm
端子位置：BOTTOM处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：2.09 mmBase Number Matches：1

MAX7370EWA+ 数据手册

 浏览型号MAX7370EWA+的Datasheet PDF文件第2页浏览型号MAX7370EWA+的Datasheet PDF文件第3页浏览型号MAX7370EWA+的Datasheet PDF文件第4页浏览型号MAX7370EWA+的Datasheet PDF文件第5页浏览型号MAX7370EWA+的Datasheet PDF文件第6页浏览型号MAX7370EWA+的Datasheet PDF文件第7页 
19-5950; Rev 1; 3/12  
E V A L U A T I O N K I T A V A I L A B L E  
General Description  
Features  
2
S Monitors Up to 64 Keys  
The MAX7370 I C-interfaced peripheral provides micro-  
processors with management of up to 64 key switches,  
with optional GPIO and PWM-controlled LED drivers.  
S Integrated High-ESD Protection  
±±8k IEꢀ 61ꢁꢁꢁ-4-ꢂ ꢀontact Discharge  
±1ꢃ8k IEꢀ 61ꢁꢁꢁ-4-ꢂ ꢄir-ꢅap Discharge  
The key-switch drivers interface with metallic or resistive  
switches with on-resistances up to 5kI. Key inputs are  
monitored statically, not dynamically, to ensure low-EMI  
operation. The IC features autosleep and autowake  
modes to further minimize the power consumption of  
the device. The autosleep feature puts the device in a  
low-power state (1µA typ) after a timeout period. The  
autowake feature configures the device to return to  
normal operating mode from sleep upon a keypress.  
S Keyscan Uses Static Matrix Monitoring for  
Low-EMI Operation  
S Four LED Driver Pins on ꢀOL7–ꢀOL4  
S ꢃk Tolerant, Open-Drain I/O Ports ꢀapable of  
ꢀonstant-ꢀurrent LED Drive  
S ꢂꢃ6-Step PWM Individual LED Intensity-ꢀontrol  
ꢄccuracy  
S Individual LED Blin8 Rates and ꢀommon LED  
The key controller debounces and maintains a FIFO  
buffer of keypress and release events (including auto-  
repeat, if enabled). An interrupt (INT) output can be  
configured to alert keypresses, as they occur, or at the  
maximum rate.  
Fade In/Out Rates from ꢂꢃ6ms to 4ꢁ96ms  
S FIFO Queues Up to 16 Debounced Key Events  
S User-ꢀonfigurable Keypress and Release  
Debounce Time (ꢂms to 3ꢂms)  
The same index rows and columns in the device can be  
used as a direct logic-level translator.  
S Key-Switch Interrupt (INT) on Each Debounced  
Event/FIFO Level, or End-of-Definable Time Period  
If the device is not used for key-switch control, all  
keyboard pins can be used as GPIOs. Each GPIO can  
be programmed to one of the two externally applied  
logic voltage levels. Four column ports (COL7–COL4)  
can also be configured as LED drivers that feature  
constant-currentandPWMintensitycontrol. Themaximum  
constant-current level for each open-drain LED port is  
20mA. The intensity of the LED on each open-drain port  
can be individually adjusted through a 256-step PWM  
control.  
S 1.6ꢂk to 3.6k Operating Supply koltage  
S Individually Programmable ꢅPIOs to Two Logic  
Levels  
S ±-ꢀhannel Individual Programmable Level  
Translators  
S Provides Optional ꢅPIOs on all ROW� and ꢀOL�  
Pins  
S Supports Hot Insertion  
S 4ꢁꢁ8bps, ꢃ.ꢃk Tolerant Iꢂꢀ Serial Interface with  
Selectable Bus Timeout  
The device is offered in a 24-pin (3.5mm x 3.5mm) TQFN  
package with an exposed pad, and small 25-bump  
(2.159mm x 2.159mm) wafer-level package (WLP) for  
cell phones, pocket PCs, and other portable consumer  
electronic applications.  
Ordering Information appears at end of data sheet.  
Typical Operating Circuit  
+5V  
+1.8V  
+2.6V  
The device operates over the -40°C to +85°C extended  
temperature range.  
V
V
LA  
CC  
Applications  
MAX7370  
COL4  
COL5  
COL6  
COL7  
Cell Phones  
INT  
I/O  
I/O  
Notebooks  
SDA  
SCL  
MCU  
PDAs  
8
4
AD0  
ROW[0:7]  
COL[0:3]  
Handheld Games  
Portable Consumer Electronics  
GND  
For related parts and recommended products to use with this part,  
32 KEYS  
refer to www.maxim-ic.com/MAX7370.related.  
����������������������������������������������������������������� Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,  
or visit Maxim’s website at www.maxim-ic.com.  
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