 |
Motor de Búsqueda de Datasheet de Componentes Electrónicos |
|
|
Motor de Búsqueda de Datasheet de Componentes Electrónicos |
|
STK526 Datasheet(PDF) 10 Page - ATMEL Corporation |
|
||||||||||||||||||||||||||||||
STK526 Datasheet(HTML) 10 Page - ATMEL Corporation |
|
|
10 / 40 page  Using the STK526 STK526 rev. B Hardware User Guide 2-9 7709B–AVR–07/08 2.2.3 AT90USB82/162 Power Configuration Settings This section applies to the following part of the power path diagram : Figure 2-5 . MCU Power Configurations Once the power source selected, the input of the AT90USB82/162 internal regulator (UVcc) is powered. Firmware has the responsability to enable or disable the regulator. Ucap is the output pin of the internal regulator, and Vcc is the core power input of the MCU. Several cases may be required by the user : Vsource = 5V, Vcc = 5V: for this mode, the configuration switch (see figure above) must be in the position labelled “NOREG”. The MCU can still run a USB Device application if it enables the internal regulator that will power the USB pad and macro. Vsource = 5V, Vcc = 3.3V: for this mode, the configuration switch must be in the position labelled “INTREG”. The Vcc pin will be tied to the regulator output, so that the AT90USB82/162 itself will power itself from its regulator, and the I/O will be at 3V3 level. Vsource = 3.3V, Vcc = 3.3V: for this mode all the MCU power inputs are at the 3V3 level. The configuration switch must be in the position “NOREG”. In normal operation it is recommended to tie all the power pins together (UVcc, Vcc, Ucap) and to disable the regulator. However, the board configuration does not allow to tie together all the power pins, so that the regulator must be enabled by firmware in order to power the USB pad and macro (that can lead to some extra-consumption). Table 2-2 . MCU Power Configuration Jumpers AT90USBxx2 Vsource ) Internal 3V3 100mA Regulator (1) (2) NOREG INTREG (3V3 REG) 1µF “3V3 REG” Jumper position AT90USB16 I/O power supply Comments View “NOREG” Primary power source This is the default configuration. “INTREG” Internal regulator This configuration is relevant with a 5V primary powered application requiring I/O levels at 3.3V on the AT90USB82/162. 3V3 REG 3V3 REG |
Número de pieza similar - STK526 |
|
Descripción similar - STK526 |
|
|
Enlace URL |
| Política de Privacidad |
| ALLDATASHEET.ES |
| ¿ALLDATASHEET es útil para Ud.? [ DONATE ] |
Todo acerca de Alldatasheet | Publicidad | Contáctenos | Política de Privacidad | Intercambio de Enlaces | Lista de Fabricantes 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 |
Spanish ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
