 |
数据搜索系统，热门电子元器件搜索 |
|
|
数据搜索系统，热门电子元器件搜索 |
|
SIM800L 数据表(PDF) 44 Page - SIMCom |
|
|
|||||||||||||||||||||||||||||
SIM800L 数据表(HTML) 44 Page - SIMCom |
|
|
44 / 73 page  Smart Machine Smart Decision If power supply is 2.8V for SD card, customer can use VDD_EXT; if power supply is 3.3V, please use external design LDO. 4.10. Keypad Interface The keypad interface consists of 5 keypad column outputs and 5 keypad row inputs, with total 5*5*2, which is 50 keys. Module keys have two connections: connections 1, which can support 25 keys; connections 2, which can support 50 keys. Connections 1: Figure 40: 25 keys reference circuit Note：According to the traditional 5*5 to design buttons, when there is spare KBC or KBR, customer can execute AT command to define as GPIO for details please see the relevant manuals. Connections 2: Module supports a new key connection, can support 50 keys, which meets full keyboard demand, the connection diagram is as following: SIM800H&SIM800L_Hardware Design_V2.02 44 2015-07-27 |
|
链接网址 |
| ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 数据表链接 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Chinese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
