 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
AT83C24B-TISUM Datasheet(PDF) 9 Page - ATMEL Corporation |
|
||||||||||||||||||||||||||||||
AT83C24B-TISUM Datasheet(HTML) 9 Page - ATMEL Corporation |
|
|
9 / 42 page  9 4234F–SCR–10/05 AT83C24 Read Command After the slave address has been configured, the read command allows to read one or several bytes in the following order: • STATUS, CONFIG0, CONFIG1, CONFIG2, CONFIG3, INTERFACE, TIMER1, TIMER0, CAPTURE1, CAPTURE0 • FFh is completing the transfer if the microcontroller attempts to read beyond the last byte. Note: Flags are only reset after the corresponding byte read has been acknowledged by the master. Table 4. Read Command Description Interrupts The PRES/INT behavior depends on IT_SEL bit value (see CONFIG4 register). • If IT_SEL= 0, the PRES/INT output is High by default (on chip pull up or open drain). PRES/INT is driven Low by any of the following event: – INSERT bit set in CONFIG0 register (card insertion/extraction or bit set by software ) – VCARD_INT bit set in STATUS register (the DC/DC output voltage has settled) – over-current detection on CVCC – VCARDERR bit set in CONFIG0 register (out of range voltage on CVCC or bit set by software) – ATRERR bit set in CONFIG0 register (no ATR before the card clock counter overflows or bit set by software).This control of ATR timing is only available if ART bit =1. If IT_SEL=0, a read command of STATUS register and of CONFIG0 register will release PRES/INT pin to high level. Several AT83C24 devices can share the same interrupt and the microcontroller can identify the interrupt sources by polling the status of the AT83C24 devices using TWI commands. • If IT_SEL= 1 (mandatory for NDS applications and for software compatibility with existing devices) the PRES/INT output is High to indicate a card is present and none of the following event has occured: Byte Description Byte Value Address byte 0100 A 2A1A01 Data byte 1 STATUS Data byte 2 CONFIG0 Data byte 3 CONFIG1 Data byte 4 CONFIG2 Data byte 5 CONFIG3 Data byte 6 CONFIG4 Data byte 7 INTERFACE Data byte 8 TIMER 1 (MSB) Data byte 9 TIMER 0 (LSB) Data byte 10 CAPTURE 1 (MSB) Data byte 11 CAPTURE 0 (LSB) Data byte 12 0xFF |
Similar Part No. - AT83C24B-TISUM |
|
Similar Description - AT83C24B-TISUM |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
