CONFIG1

Configuration Word 1
Name:
CONFIG1
Offset:
0x8007
Reset:
Access:
Bit15141312111098
FCMENVDDARCSWENCLKOUTEN
AccessR/WR/WR/WR/W
Reset1111
Bit76543210
RSTOSC[2:0]FEXTOSC[2:0]
AccessR/WR/WR/WR/WR/WR/W
Reset111111

Bit 13 – FCMEN: Fail-Safe Clock Monitor Enable

Fail-Safe Clock Monitor Enable

ValueDescription
1 Fail-Safe Clock Monitor is enabled
0 Fail-Safe Clock Monitor is disabled

Bit 12 – VDDAR: VDD Analog Range Calibration Selection

VDD Analog Range Calibration Selection

ValueDescription
1 Internal analog systems are calibrated for operation between VDD = 2.3V - 5.5V
0 Internal analog systems are calibrated for operation between VDD = 1.8V - 3.6V

Bit 11 – CSWEN: Clock Switch Enable

Clock Switch Enable

ValueDescription
1 Writing to NOSC and NDIV is allowed
0 The NOSC and NDIV bit fields cannot be changed by user software

Bit 8 – CLKOUTEN: Clock Out Enable

Clock Out Enable

ValueDescription
1 CLKOUT function is disabled; I/O function on CLKOUT pin
0 CLKOUT function is enabled; FOSC/4 clock appears on CLKOUT pin

Bits 6:4 – RSTOSC[2:0]: Power-up Default Value for the NOSC/COSC bits

Power-up Default Value for the NOSC/COSC bits

Selects the oscillator source used by user software.
ValueDescription
111 EXTOSC operating per the FEXTOSC bits
110 HFINTOSC = 1 MHz (FRQ = 4 MHz, CDIV = 4:1)
101 LFINTOSC
100 SOSC
011 Reserved
010 EXTOSC with 4x PLL, EXTOSC operating per FEXTOSC bits
001 HFINTOSC = 16 MHz (FRQ = 16 MHz, CDIV = 1:1)
000 HFINTOSC = 32 MHz (FRQ = 32 MHz, CDIV = 1:1)

Bits 2:0 – FEXTOSC[2:0]: External Oscillator Mode Selection

External Oscillator Mode Selection

ValueDescription
111 ECH (16 MHz and higher)
110 Reserved
101 ECL (below 16 MHz)
100 Oscillator not enabled
011 Reserved
010 HS (crystal oscillator) above 4 MHz
001 XT (crystal oscillator) between 100 kHz and 4 MHz
000 LP (crystal oscillator) 32 kHz