PIC16LF18854 Datasheet, PDF (364/668 Pages) Microchip Technology – C Compiler Optimized RISC Architecture

PIC16(L)F18856/76
REGISTER 23-9: ADPRE: ADC PRECHARGE TIME CONTROL REGISTER
R/W-0/0
R/W-0/0
R/W-0/0
R/W-0/0
R/W-0/0
R/W-0/0
ADPRE<7:0>
bit 7
R/W-0/0
R/W-0/0
bit 0
Legend:
R = Readable bit
u = Bit is unchanged
‘1’ = Bit is set
W = Writable bit
x = Bit is unknown
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
-n/n = Value at POR and BOR/Value at all other Resets
bit 7-0
ADPRE<7:0>: Precharge Time Select bits⁽¹⁾
11111111 = Precharge time is 255 clocks of the selected ADC clock
11111110 = Precharge time is 254 clocks of the selected ADC clock
•
•
•
00000001 = Precharge time is 1 clock of the selected ADC clock
00000000 = Precharge time is not included in the data conversion cycle
Note 1: When FOSC is selected as the ADC clock (ADCS bit of ADCON0 = 0), both ADPRE and ADACQ are
calculated using undivided FOSC, regardless of the value of the ADCLK register.
REGISTER 23-10: ADACQ: ADC ACQUISITION TIME CONTROL REGISTER
R/W-0/0
R/W-0/0
R/W-0/0
R/W-0/0
R/W-0/0
R/W-0/0
ADACQ<7:0>
bit 7
R/W-0/0
R/W-0/0
bit 0
Legend:
R = Readable bit
u = Bit is unchanged
‘1’ = Bit is set
W = Writable bit
x = Bit is unknown
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
-n/n = Value at POR and BOR/Value at all other Resets
bit 7-0
ADACQ<7:0>: Acquisition (charge share time) Select bits⁽¹⁾
11111111= Acquisition time is 255 clocks of the selected ADC clock
11111110= Acquisition time is 254 clocks of the selected ADC clock
•
•
•
00000001= Acquisition time is 1 clock of the selected ADC clock
00000000= Acquisition time is not included in the data conversion cycle⁽²⁾
Note 1: When FOSC is selected as the ADC clock (ADCS bit of ADCON0 = 0), both ADPRE and ADACQ are
calculated using undivided FOSC, regardless of the value of the ADCLK register.
2: If ADPRE! = 0, ADAQC = 0 will instead set an Acquisition time of 256 clocks of the selected ADC clock.
DS40001824A-page 364
Preliminary
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