 |
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) 84 Page - NXP Semiconductors |
|
|
|||||||||||||||||||||||||||||
HC705JJ7GRS/D 数据表(HTML) 84 Page - NXP Semiconductors |
|
|
84 / 230 page  Parallel Input/Output General Release Specification MC68HC705JJ7/MC68HC705JP7 — Rev. 3.0 Parallel Input/Output 7.4 Port B Port B is an 8-bit, general-purpose bidirectional I/O port with the following features: • Programmable pulldown devices • PB0–PB4 are shared with the analog subsystem • PB3 and PB4 are shared with the 16-bit programmable timer • PB4 can be driven directly by the output of comparator 1 • PB5–PB7 are shared with the simple serial interface (SIOP) • High current sinking capability on the PB4 pin • High current sourcing capability on the PB4 pin 7.4.1 Port B Data Register (PORTB) The port B data register contains a bit for each of the port B pins. When a port B pin is programmed to be an output, the state of its data register bit determines the state of the output pin. When a port B pin is programmed to be an input, reading the port B data register returns the logic state of the pin. Reset has no effect on port B data. PB0-PB7 — Port B Data Bits These read/write bits are software programmable. Data direction of each bit is under the control of the corresponding bit in data direction register B. Reset has no effect on port B data. $0001 Bit 7 654321 Bit 0 Read: PB7 PB6 PB5 PB4 PB3 PB2 PB1 PB0 Write: Reset: Unaffected by Reset Alternate: SCK SDI SDO AN4 AN3 AN2 AN1 AN0 Alternate: SCK SDI SDO TCMP TCAP AN2 AN1 AN0 Alternate: SCK SDI SDO CMP1 TCAP AN2 AN1 AN0 Figure 7-5. Port B Data Register (PORTB) 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
