Atmel Xplained Pro Evaluation Kit ATSAM4E-XPRO ATSAM4E-XPRO Ficha De Dados
Códigos do produto
ATSAM4E-XPRO
1047
SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
Register group 3:
̶
̶
̶
̶
Register group 4:
̶
̶
Register group 5:
̶
̶
There are two types of write protection:
SW write protection—can be enabled or disabled by software
HW write protection—can be enabled by software but only disabled by a hardware reset of the PWM
controller
controller
Both types of write protection can be applied independently to a particular register group by means of the WPCMD
and WPRGx fields in the PWM_WPCR. If at least one type of write protection is active, the register group is write-
protected. The value of field WPCMD defines the action to be performed:
and WPRGx fields in the PWM_WPCR. If at least one type of write protection is active, the register group is write-
protected. The value of field WPCMD defines the action to be performed:
0: Disables SW write protection of the register groups of which the bit WPRGx is at ‘1’
1: Enables SW write protection of the register groups of which the bit WPRGx is at ‘1’
2: Enables HW write protection of the register groups of which the bit WPRGx is at ‘1’
At any time, the user can determine whether SW or HW write protection is active in a particular register group by
the fields WPSWS and WPHWS in the
the fields WPSWS and WPHWS in the
If a write access to a write-protected register is detected, the WPVS flag in the PWM_WPSR is set and the field
WPVSRC indicates the register in which the write access has been attempted.
WPVSRC indicates the register in which the write access has been attempted.
The WPVS and WPVSRC fields are automatically cleared after reading the PWM_WPSR.