 |
поискавой системы для электроныых деталей |
|
|
поискавой системы для электроныых деталей |
|
COM20020ILJP датащи(PDF) 59 Page - Microchip Technology |
|
|
|||||||||||||||||||||||||||||
COM20020ILJP датащи(HTML) 59 Page - Microchip Technology |
|
|
59 / 72 page  5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM Datasheet SMSC COM20020I Rev D Page 59 Revision 12-05-06 DATASHEET Figure 8.7 - Non-Multiplexed Bus, 68XX-Like Control Signals; Read Cycle A0-A2 VALID DATA VALID D0-D7 nCS t8 t1 t9 t3 t6 t4 t2 nDS DIR t5 t7 t10 t11 Note 2 Parameter min max units t1 t2 t3 t4 t5 t6 t7 15 10 5** 0 nS Address Setup to nDS Active Address Hold from nDS Inactive nCS Setup to nDS Active nCS Hold from nDS Inactive DIR Setup to nDS Active Cycle Time (nDS Low to Next Time Low) DIR Hold from nDS Inactive 4TARB * nS nS nS nS nS nS t8 nS nDS Low to Valid Data 40** t9 t10 t11 nS nS nS nDS High to Data High Impedence nDS Low Width nDS High Width 20 10 10 0 60 20 CASE 1: RBUSTMG bit = 0 The Microcontroller typically accesses the COM20020 on every other cycle. Therefore, the cycle time specified in the microcontroller's datasheet should be doubled when considering back-to-back COM20020 cycles. Note 1: nCS may become active after control becomes active, but the access time (t8) will now be 45nS measured from the leading edge of nCS. ** TARB is the Arbitration Clock Period TARB is identical to Topr if SLOW ARB = 0 * TARB is twice Topr if SLOW ARB = 1 Topr is the period of operation clock. It depends on CKUP1 and CKUP0 bits Note 2: Read cycle for Address Pointer Low/High Registers occurring after an access to Data Register requires a minimum of 5TARB from the trailing edge of nDS to the leading edge of the next nDS. |
|
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
