Datasheet

PIC16(L)F1938/9
DS40001574C-page 168  2011-2013 Microchip Technology Inc.
17.7 Register Definitions: DAC Control
TABLE 17-1: SUMMARY OF REGISTERS ASSOCIATED WITH THE DAC MODULE
REGISTER 17-1: DACCON0: VOLTAGE REFERENCE CONTROL REGISTER 0
R/W-0/0 R/W-0/0 R/W-0/0 U-0 R/W-0/0 R/W-0/0 U-0 R/W-0/0
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
0 = DAC is disabled
bit 6
DACLPS: DAC Low-Power Voltage State Select bit
1 = DAC Positive reference source selected
0 = 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
0 = 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
11 = Reserved, do not use
10 = FVR Buffer2 output
01 =VREF+ pin
00 =VDD
bit 1 Unimplemented: Read as ‘0’
bit 0
DACNSS: DAC Negative Source Select bits
1 =VREF-
0 =VSS
REGISTER 17-2: DACCON1: VOLTAGE REFERENCE CONTROL REGISTER 1
U-0 U-0 U-0 R/W-0/0 R/W-0/0 R/W-0/0 R/W-0/0 R/W-0/0
— — — DACR<4:0>
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 7-5
Unimplemented: Read as ‘0’
bit 4-0
DACR<4:0>: DAC Voltage Output Select bits
Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Register
on page
FVRCON FVREN FVRRDY TSEN TSRNG CDAFVR<1:0> ADFVR<1:0> 148
DACCON0 DACEN DACLPS DACOE
— DACPSS<1:0> — DACNSS 168
DACCON1
— — — DACR<4:0> 168
Legend: — = Unimplemented location, read as ‘0’. Shaded cells are not used with the DAC module.