Microchip Technology DM183037 Fiche De Données
2012 Microchip Technology Inc.
DS30575A-page 445
PIC18F97J94 FAMILY
REGISTER 22-8:
ADCON3H: A/D CONTROL REGISTER 3 HIGH
R/W-0
R-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
ADRC
EXTSAM
PUMPEN
SAMC4
SAMC3
SAMC2
SAMC1
SAMC0
bit 7
bit 0
Legend:
R = Readable bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 7
ADRC: A/D Conversion Clock Source bit
1 = RC Clock
0 = Clock derived from system clock
1 = RC Clock
0 = Clock derived from system clock
bit 6
EXTSAM: Extended Sampling Time bit
1 = A/D is still sampling after SAMP = 0
0 = A/D is finished sampling
1 = A/D is still sampling after SAMP = 0
0 = A/D is finished sampling
bit 5
PUMPEN: Charge Pump Enable bit
1 = Charge pump for switches is enabled
0 = Charge pump for switches is disabled
1 = Charge pump for switches is enabled
0 = Charge pump for switches is disabled
bit 4-0
SAMC<4:0>: Auto-Sample Time Select bits
11111 = 31 T
11111 = 31 T
AD
00001 = 1 T
00001 = 1 T
AD
00000 = 0 T
AD
REGISTER 22-9:
ADCON3L: A/D CONTROL REGISTER 3 LOW
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
ADCS7
ADCS6
ADCS5
ADCS4
ADCS3
ADCS2
ADCS1
ADCS0
bit 7
bit 0
Legend:
R = Readable bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-0
ADCS<7:0>: A/D Conversion Clock Select bits ((ADCS<7:0> + 1) T
CY
) = T
AD
11111111
= Reserved
01000000
00111111 = 64·T
00111111 = 64·T
CY
= T
AD
00000001 = 2·T
00000001 = 2·T
CY
= T
AD
00000000 = T
CY
= T
AD