PIC18LF4331 datasheet(267/392 Pages) MICROCHIP

267 / 392 page

 2010 Microchip Technology Inc.

DS39616D-page 267

PIC18F2331/2431/4331/4431

CONFIG3L: CONFIGURATION REGISTER 3 LOW (BYTE ADDRESS 300004h)

U-0

R/P-1

—

—T1OSCMX

HPOL(1)

LPOL(1)

PWMPIN(3)

—

bit 7

bit 0

Legend:

R = Readable bit

P = Programmable bit

U = Unimplemented bit, read as ‘0’

-n = Value when device is unprogrammed

U = Unchanged from programmed state

bit 7-6

Unimplemented:

Read as ‘0’

bit 5

T1OSCMX:

Timer1 Oscillator Mode bit

= Low-power Timer1 operation when microcontroller is in Sleep mode

= Standard (legacy) Timer1 oscillator operation

bit 4

HPOL:

High Side Transistors Polarity bit (i.e., Odd PWM Output Polarity Control bit)(1)

= PWM1, 3, 5 and 7 are active-high (default)(2)

= PWM1, 3, 5 and 7 are active-low(2)

bit 3

LPOL:

Low Side Transistors Polarity bit (i.e., Even PWM Output Polarity Control bit)(1)

= PWM0, 2, 4 and 6 are active-high (default)(2)

= PWM0, 2, 4 and 6 are active-low(2)

bit 2

PWMPIN:

PWM Output Pins Reset State Control bit(3)

= PWM outputs are disabled upon Reset (default)

= PWM outputs drive active states upon Reset

bit 1-0

Unimplemented:

Read as ‘0’

Note 1:

Polarity control bits, HPOL and LPOL, define PWM signal output active and inactive states; PWM states

generated by the Fault inputs or PWM manual override.

PWM6 and PWM7 output channels are only available on PIC18F4331/4431 devices.

When PWMPIN = 0, PWMEN<2:0> = 101 if the device has eight PWM output pins (40 and 44-pin

devices) and PWMEN<2:0> = 100 if the device has six PWM output pins (28-pin devices). PWM output

polarity is defined by HPOL and LPOL.

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