 |
поискавой системы для электроныых деталей |
|
|
поискавой системы для электроныых деталей |
|
ATmega16 датащи(PDF) 223 Page - ATMEL Corporation |
|
|
|||||||||||||||||||||||||||||
ATmega16 датащи(HTML) 223 Page - ATMEL Corporation |
|
|
223 / 357 page  223 2466S–AVR–05/09 ATmega16(L) The IEEE std. 1149.1 also specifies an optional TAP signal; TRST – Test ReSeT – which is not provided. When the JTAGEN fuse is unprogrammed, these four TAP pins are normal port pins and the TAP controller is in reset. When programmed and the JTD bit in MCUCSR is cleared, the TAP input signals are internally pulled high and the JTAG is enabled for Boundary-scan and program- ming. In this case, the TAP output pin (TDO) is left floating in states where the JTAG TAP controller is not shifting data, and must therefore be connected to a pull-up resistor or other hardware having pull-ups (for instance the TDI-input of the next device in the scan chain). The device is shipped with this fuse programmed. For the On-chip Debug system, in addition to the JTAG interface pins, the RESET pin is moni- tored by the debugger to be able to detect external reset sources. The debugger can also pull the RESET pin low to reset the whole system, assuming only open collectors on the reset line are used in the application. Figure 112. Block Diagram TAP CONTROLLER TDI TDO TCK TMS FLASH MEMORY AVR CPU DIGITAL PERIPHERAL UNITS JTAG / AVR CORE COMMUNICATION INTERFACE BREAKPOINT UNIT FLOW CONTROL UNIT OCD STATUS AND CONTROL INTERNAL SCAN CHAIN M U X INSTRUCTION REGISTER ID REGISTER BYPASS REGISTER JTAG PROGRAMMING INTERFACE PC Instruction Address Data BREAKPOINT SCAN CHAIN ADDRESS DECODER I/O PORT 0 I/O PORT n BOUNDARY SCAN CHAIN DEVICE BOUNDARY |
|
ссылки URL |
| Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | Ссылка на техническое описание | обмен ссыками | поиск по производителю 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 |
Russian ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
