
2011 Microchip Technology Inc.
Preliminary
DS41458B-page 47
PIC16(L)F1526/27
bit 2-0
FOSC<2:0>:
Oscillator Selection bits
111
= ECH: External Clock, High-Power mode (4-20 MHz): device clock supplied to CLKIN pin
110
= ECM: External Clock, Medium-Power mode (0.5-4 MHz): device clock supplied to CLKIN pin
101
= ECL: External Clock, Low-Power mode (0-0.5 MHz): device clock supplied to 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
REGISTER 4-1:
CONFIGURATION WORD 1 (CONTINUED)