 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
ATA5279P-PLPW Datasheet(PDF) 4 Page - ATMEL Corporation |
|
||||||||||||||||||||||||||||||
ATA5279P-PLPW Datasheet(HTML) 4 Page - ATMEL Corporation |
|
|
4 / 39 page  4 9125I–RKE–09/10 Atmel ATA5279 3. Functional Description 3.1 Operation Modes Atmel ® ATA5279 features five operation modes. They are: • Power-down mode (reset state) • Idle mode • Operating mode • Shutdown mode • Diagnosis mode Power-down mode is active after supply voltages have been applied to the chip. No internal circuitry is active in this mode and as such power consumption is minimal. If no operation of the chip is demanded, it should be kept in this state. To enter power-down mode, a negative pulse on the NRES pin for at least t NRES,min is required. After wake-up from power-down mode by a logic high signal at the S_CS pin, the chip is in idle mode. That is, the oscillator is running and the control logic waits for commands coming from the serial interface. Furthermore, the selected output driver stage is ready for operation (the voltage on the corresponding output pin AxP is approximately half the battery supply voltage). The current consumption of the chip is now mainly defined by the cross current through the active driver stage (please refer also to Section 3.2 “Coil Driver Stage” on page 5). When processing coil driving commands, the chip is in operation mode. From the interface point of view, there is no difference from the idle mode; however, current consumption is now higher as the output driver stages are operating and, depending on the selected output cur- rent, the DC-DC converter is also operating. If a connection failure (short circuit on any of the coil connection lines) is detected, the ATA5279 enters the shutdown mode to protect itself from damage. In this mode, the interface operates in idle mode but with all power stages shutdown and no LF transmission command processing. This mode should be exited using the Reset Fault Status command (see below), however, it can also be exited by resetting the chip. In diagnosis mode, the output driver stages are also disabled. In their place, high-ohmic cur- rent sources are activated that can be programmed via the serial interface in order to check the coil connection lines for failures. This mode can be exited by an appropriate SPI command or by resetting the chip. |
Similar Part No. - ATA5279P-PLPW |
|
Similar Description - ATA5279P-PLPW |
|
|
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
