Datasheet

Value Name Description
1
8_MHz The RC oscillator frequency is at 8 MHz
2
12_MHz The RC oscillator frequency is at 12 MHz
Note: MOSCRCF must be changed only if MOSCRCS is set in the PMC_SR. Therefore
MOSCRCF and MOSCRCEN cannot be changed at the same time.
Bit 3 – MOSCRCEN Main RC Oscillator Enable
When MOSCRCEN is set, the MOSCRCS flag is set once the Main RC oscillator startup time is achieved.
Value Description
0
The Main RC oscillator is disabled.
1
The Main RC oscillator is enabled.
Bit 2 – WAITMODE W
ait Mode Command (write-only)
Value Description
0
No effect.
1
Puts the device in Wait mode.
Bit 1 – MOSCXTBY Main Crystal Oscillator Bypass
When MOSCXTBY is set, the MOSCXTS flag in PMC_SR is automatically set.
Clearing MOSCXTEN and MOSCXTBY bits clears the MOSCXTS flag.
Value Description
0
No effect.
1
The Main crystal oscillator is bypassed. MOSCXTEN must be cleared. An external clock must be
connected on XIN.
Note: When the crystal oscillator bypass is disabled (MOSCXTBY = 0), the MOSCXTS flag must be
read at ‘0’ in PMC_SR before enabling the crystal oscillator (MOSCXTEN = 1).
Bit 0 – MOSCXTEN Main Crystal Oscillator Enable
A crystal must be connected between XIN and XOUT
.
When MOSCXTEN is set, the MOSCXTS flag is set once the Main crystal oscillator startup time is achieved.
Value Description
0
The Main crystal oscillator is disabled.
1
The Main crystal oscillator is enabled. MOSCXTBY must be cleared.
SAM E70/S70/V70/V71 Family
Power Management Controller (PMC)
© 2019 Microchip T
echnology Inc.
Datasheet
DS60001527D-page 273