Microchip Technology MA160014 Data Sheet

 2010-2012 Microchip Technology Inc.

DS41412F-page 347

PIC18(L)F2X/4XK22

22.7

Operation During Sleep

When the device wakes up from Sleep through an
interrupt or a Watchdog Timer time-out, the contents of
the VREFCON1 register are not affected. To minimize
current consumption in Sleep mode, the voltage
reference should be disabled.

22.8

Effects of a Reset

A device Reset affects the following:

• DAC is disabled

• DAC output voltage is removed from the

DACOUT pin

• The DACR<4:0> range select bits are cleared

22.9

Register Definitions: DAC Control

REGISTER 22-1:

VREFCON1: VOLTAGE REFERENCE CONTROL REGISTER 0

R/W-0

U-0

R/W-0

U-0

R/W-0

DACEN

DACLPS

DACOE

—

DACPSS<1:0>

—

DACNSS

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

u = Bit is unchanged

x = Bit is unknown

-n/n = Value at POR and BOR/Value at all other Resets

‘1’ = Bit is set

‘0’ = Bit is cleared

bit 7

DACEN: DAC Enable bit
1

= DAC is enabled

= DAC is disabled

bit 6

DACLPS: DAC Low-Power Voltage Source Select bit

= DAC Positive reference source selected

= DAC Negative reference source selected

bit 5

DACOE: DAC Voltage Output Enable bit
1

= DAC voltage level is also an output on the DACOUT pin

= DAC voltage level is disconnected from the DACOUT pin

bit 4

Unimplemented: Read as ‘0’

bit 3-2

DACPSS<1:0>: DAC Positive Source Select bits
00

= V

REF

= FVR BUF1 output

= Reserved, do not use

bit 1

Unimplemented: Read as ‘0’

bit 0

DACNSS: DAC Negative Source Select bits
1

= V

REF

= V