16.8.8 APBA Mask
| Name: | APBAMASK | 
| Offset: | 0x18 | 
| Reset: | 0x0000007F | 
| Property: | Write-Protected | 
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| Access | |||||||||
| Reset | 
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| Access | |||||||||
| Reset | 
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| Access | |||||||||
| Reset | 
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| EIC | RTC | WDT | GCLK | SYSCTRL | PM | PAC0 | |||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | ||
| Reset | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 
Bit 6 – EIC EIC APB Clock Enable
| Value | Description | 
|---|---|
| 0 | The APBA clock for the EIC is stopped. | 
| 1 | The APBA clock for the EIC is enabled. | 
Bit 5 – RTC RTC APB Clock Enable
| Value | Description | 
|---|---|
| 0 | The APBA clock for the RTC is stopped. | 
| 1 | The APBA clock for the RTC is enabled. | 
Bit 4 – WDT WDT APB Clock Enable
| Value | Description | 
|---|---|
| 0 | The APBA clock for the WDT is stopped. | 
| 1 | The APBA clock for the WDT is enabled. | 
Bit 3 – GCLK GCLK APB Clock Enable
| Value | Description | 
|---|---|
| 0 | The APBA clock for the GCLK is stopped. | 
| 1 | The APBA clock for the GCLK is enabled. | 
Bit 2 – SYSCTRL SYSCTRL APB Clock Enable
| Value | Description | 
|---|---|
| 0 | The APBA clock for the SYSCTRL is stopped. | 
| 1 | The APBA clock for the SYSCTRL is enabled. | 
Bit 1 – PM PM APB Clock Enable
| Value | Description | 
|---|---|
| 0 | The APBA clock for the PM is stopped. | 
| 1 | The APBA clock for the PM is enabled. | 
Bit 0 – PAC0 PAC0 APB Clock Enable
| Value | Description | 
|---|---|
| 0 | The APBA clock for the PAC0 is stopped. | 
| 1 | The APBA clock for the PAC0 is enabled. | 
