 |
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 |
|
HC705JJ7GRS/D 数据表(PDF) 88 Page - NXP Semiconductors |
|
|
|||||||||||||||||||||||||||||
HC705JJ7GRS/D 数据表(HTML) 88 Page - NXP Semiconductors |
|
|
88 / 230 page  Parallel Input/Output General Release Specification MC68HC705JJ7/MC68HC705JP7 — Rev. 3.0 Parallel Input/Output The PB0:3 pins share their inputs with another module. When using the other attached module, the following conditions must be observed: 1. If the DDRB configures the pin as an output, then the port data register can provide an output which may conflict with any external input source to the other module. The pulldown device will be disabled in this case. 2. If the DDRB configures the pin as an input, then reading the port data register will return the state of the input in terms of the digital threshold for that pin (analog inputs will default to logic states). 3. If DDRB configures the pin as an input and the pulldown device is activated for a pin, it will also load the input to the other module. 4. If interaction between the port logic and the other module is not desired, the pin should be configured as an input by clearing the appropriate DDRB bit. The input pulldown device is disabled by clearing the appropriate PDRB bit (or by disabling programmable pulldowns with the SWPDI bit in the MOR). Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
|
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
