4.7.1 CONFIG1
| Name: | CONFIG1 |
| Address: | 0x8007 |
Configuration Word 1
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| FCMEN | CSWEN | CLKOUTEN | |||||||
| Access | R/P | U | R/P | U | U | R/P | |||
| Reset | 1 | 1 | 1 | 1 | 1 | 1 |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| RSTOSC[2:0] | FEXTOSC[2:0] | ||||||||
| Access | U | R/P | R/P | R/P | U | R/P | R/P | R/P | |
| Reset | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
Bit 13 – FCMEN Fail-Safe Clock Monitor Enable bit
| Value | Description |
|---|---|
1 |
FSCM timer enabled |
0 |
FSCM timer disabled |
Bit 11 – CSWEN Clock Switch Enable bit
| Value | Description |
|---|---|
1 |
Writing to NOSC and NDIV is allowed |
0 |
The NOSC and NDIV bits cannot be changed by user software |
Bit 8 – CLKOUTEN Clock Out Enable bit
Bits 6:4 – RSTOSC[2:0] Power-up Default Value for COSC bits
This value is the Reset default value for COSC and selects the oscillator first used by user software. Refer to COSC operation.
| Value | Description |
|---|---|
111 |
EXTOSC operating per FEXTOSC bits |
110 |
HFINTOSC (1
MHz), with OSCFRQ = ‘010’ (4 MHz) and CDIV =
‘0010’ (4:1) |
101 |
LFINTOSC |
100 |
SOSC |
011 |
Reserved |
010 |
EXTOSC with 4x PLL, with EXTOSC operating per FEXTOSC bits |
001 |
HFINTOSC
with 2x PLL (32 MHz), with OSCFRQ = ‘101’ (16 MHz) and CDIV =
‘0000’ (1:1) |
000 |
HFINTOSC with OSCFRQ = 32 MHz and CDIV = 1:1 |
Bits 2:0 – FEXTOSC[2:0] FEXTOSC External Oscillator Mode Selection bits
| Value | Description |
|---|---|
111 |
ECH (External Clock) above 8 MHz |
110 |
ECM (External Clock) for 500 kHz to 8 MHz |
101 |
ECL (External Clock) below 500 kHz |
100 |
Oscillator not enabled |
011 |
Reserved (do not use) |
010 |
HS (Crystal oscillator) above 4 MHz |
001 |
XT (Crystal oscillator) above 100 kHz, below 4 MHz |
000 |
LP (Crystal oscillator) optimized for 32.768 kHz |