 |
поискавой системы для электроныых деталей |
|
|
поискавой системы для электроныых деталей |
|
M32C83 датащи(PDF) 86 Page - Renesas Technology Corp |
|
|
|||||||||||||||||||||||||||||
M32C83 датащи(HTML) 86 Page - Renesas Technology Corp |
|
|
86 / 527 page  Page 63 8 8 4 f o 6 0 0 2 , 1 3 . n a J 1 3 . 1 . v e R 1 3 1 0 - 4 3 0 0 B 9 0 J E R 7. Bus ) T 3 8 / C 2 3 M , 3 8 / C 2 3 M ( p u o r G 3 8 / C 2 3 M _____ ________ Figure 7.7 RD Signal Output Extended by RDY Signal _________ 7.2.7 HOLD Signal __________ The HOLD signal transfers bus privileges from the CPU to external circuits. When an "L" signal is applied __________ __________ to the HOLD pin , the microcomputer enters a hold state after bus access is completed. While the HOLD _________ pin is held "L", the microcomputer is in a hold state and the HLDA pin outputs an "L" signal. Table 7.7 shows the microcomputer status in a hold state. __________ Bus is used in the following order of priority: HOLD, DMAC, CPU. (1) Separate Bus with 2 Wait States (2) Multiplexed Bus with 2 Wait States BCLK RD CSi (i=0 to 3) RDY BCLK RD CSi (i=0 to 3) RDY tsu(RDY - BCLK) 1st cycle 2nd cycle 3rd cycle 4th cycle tsu(RDY - BCLK) Timing to receive RDY tsu(RDY-BCLK): Setup time for RDY input Timing to receive RDY for j wait(s): j+1 cycles (j = 1 to 3) 1st cycle 2nd cycle 3rd cycle 4th cycle : Wait states inserted by RDY : Wait states inserted by program (1) (1) NOTES: 1. The chip-select signal (CSi) may be extended depending on CPU state such as the instruction queue buffer. Timing to receive RDY Figure 7.8 Order of Bus Priority __________ HOLD > DMAC > CPU |
|
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
