PIC16(L)F1508/9
DS40001609E-page 42
2011-2015 Microchip Technology Inc.
bit 2-0
FOSC<2:0>:
Oscillator Selection bits
111
= ECH:External clock, High-Power mode: on CLKIN pin
110
= ECM: External clock, Medium Power mode: on CLKIN pin
101
= ECL: External clock, Low-Power mode: on CLKIN pin
100
= INTOSC oscillator: I/O function on CLKIN pin
011
= EXTRC oscillator: External RC circuit connected to CLKIN pin
010
= HS oscillator: High-speed crystal/resonator connected between OSC1 and OSC2 pins
001
= XT oscillator: Crystal/resonator connected between OSC1 and OSC2 pins
000
= LP oscillator: Low-power crystal connected between OSC1 and OSC2 pins
Note 1:
When FSCM is enabled, Two-Speed Start-up will be automatically enabled, regardless of the IESO bit value.
2:
Enabling Brown-out Reset does not automatically enable Power-up Timer.
3:
Once enabled, code-protect can only be disabled by bulk erasing the device.
REGISTER 4-1:
CONFIG1: CONFIGURATION WORD 1 (CONTINUED)