|
|
|
부품번호 | NT1080 기능 |
|
|
기능 | Touch the Series 8-bit Microcontroller | ||
제조업체 | nuvoton | ||
로고 | |||
전체 22 페이지수
NT1080
8-bit Microcontroller
Nuvoton Touch Key Series
NT1080
Datasheet
The information described in this document is the exclusive intellectual property of
Nuvoton Technology Corporation and shall not be reproduced without permission from Nuvoton.
Nuvoton is providing this document only for reference purposes of NuMicro microcontroller based
system design. Nuvoton assumes no responsibility for errors or omissions.
All data and specifications are subject to change without notice.
For additional information or questions, please contact: Nuvoton Technology Corporation.
www.nuvoton.com
Oct 26, 2015
Page 1 of 22
Rev 1.0
NT1080
1 GENERAL DESCRIPTION
The Nuvoton touch key series, NT1080, supports 8 capacitive touch keys and 8 corresponding
output channels with excellent anti-impulse noise and anti-electromagnetic noise ability. The
NT1080 supports many functions, such as single key, multi-key and toggle mode. Meanwhile, an
external host MCU can control the NT1080 through the I²C bus easily.
Oct 26, 2015
Page 4 of 22
Rev 1.0
4페이지 NT1080
4 CAPACITIVE TOUCH KEY
4.1 Input Circuit
Each capacitive touch key needs to connected with one resistor as shown in Figure 4-1. It is
strongly recommended that the resistor value is 100 kΩ. At the same time, all the resistors need to
be kept as close to sensor pad as possible during PCB layout.
Touch
Pad
100K
SENn
Figure 4-1 Touch Key Reference Circuit
4.2 Sensor Pad and Ground for PCB Layout
The size of sensor pad, using circular shape with diameter equal or greater than 8mm is
recommended. Actually, sensor pad could be any kinds of shape, but fulfilling finger size is suitable.
Extra ground-net around sensor pads is not needed for PCB artwork. However, ground-net along
sensor pad to chip is alternative. Figure 4-2 shows that the PCB line width of sensor pad to chip
should be 0.254mm (10mil) or less and to keep distance with ground at least 1mm. The other layer
of PCB could implement ground-net for PCB artwork to block noise interfering with signal line. All
the subsidiary components need to be kept as close to sensor pad as possible at PCB layout.
Meanwhile, touch key chip (NT1080) and touch pad located in the PCB board would be better.
0.254mm(10mil)
Sensor
Pad
GND
GND
>1mm
>1mm
Figure 4-2 Sensor Pad and Ground-Net
As shown in Figure 4-3, a spring attached with metal-panel can be used to act as sensor pads. It is
recommended that metal-panel (ring) should be adhered to the inside of cover to be an effective
sensing area. If user wants to add a LED in the middle of sensor pad, the measure of sensor area
should be increased to compensate the hollowing part and keeping the same sensitivity.
Oct 26, 2015
Page 7 of 22
Rev 1.0
7페이지 | |||
구 성 | 총 22 페이지수 | ||
다운로드 | [ NT1080.PDF 데이터시트 ] |
당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는 |
구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
NT1080 | Touch the Series 8-bit Microcontroller | nuvoton |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |