TI的触控MCU能满足防水干扰和带手套可以操作要求吗?相比ATMEL有什么特点和优势?如果可以满足要求有什么型号推荐?做16key
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TI的触控MCU能满足防水干扰和带手套可以操作要求吗?相比ATMEL有什么特点和优势?如果可以满足要求有什么型号推荐?做16key
目前TI的触控MCU主要有以下几种,您可以先看一下
http://www.ti.com.cn/lsds/ti_zh/sensing-products/capacitive-sensing/capacitive-touch-mcus-products.page
Dick Chen,
目前触控MCU中主推的是MSP430FR25/26xx系列,具体资源和支持的按键如下。你可以参考下。最大的优点是低功耗,抗干扰能力强和灵敏度高。
Capacitance Sensitivity可以到fF级别。故通过阈值调整可以满足防水干扰。具体你提到的带手套操作,可以用金属触摸来实现。
且开发方便,有完整的参考设计以及很多reference design. 具体可以参考下列link.
http://www.ti.com/product/MSP430FR2633/toolssoftware
http://www.ti.com/tool/msp-capt-fr2633
关于你的选型,你可以自己看看,可靠性高的话,你可以考虑MSp430FR2533 or MSP430FR2633.
MSP430FR2532 |
MSP430FR2632 |
MSP430FR2533 |
MSP430FR2633 |
|
Simple ≤ 8 button |
≤ 8 buttons (self), slider support |
≤ 16 buttons (self), 10K additional FRAM |
≤ 64 button support |
|
FRAM/RAM |
8.5K/1K |
8.5K/2K |
15.5K/2K |
15.5K/4K |
Number of buttons |
Up to 8 self Or 8 mutual |
Up to 8 self Up to 16 Mutual |
Up to 16 self Up to 16 Mutual |
Up to 16 self Up to 64 Mutual |
Slider support |
No |
Yes |
Yes |
Yes |
Package |
24-RGE (QFN) |
24-RGE (QFN) |
32-DA (TSSOP) 32-RHB (QFN) |
32-DA (TSSOP) 32-RHB(QFN) |