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Rev. 0.5 49
C8051F340/1/2/3/4/5/6/7
SFR Definition 5.2. AMX0N: AMUX0 Negative Channel Select
Bits7–5: UNUSED. Read = 000b; Write = don’t care.
Bits4–0: AMX0N4–0: AMUX0 Negative Input Selection.
Note that when GND is selected as the Negative Input, ADC0 operates in Single-ended
mode. For all other Negative Input selections, ADC0 operates in Differential mode.
R R R R/W R/W R/W R/W R/W Reset Value
- - - AMX0N4 AMX0N3 AMX0N2 AMX0N1 AMX0N0 00000000
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 SFR Address:
0xBA
AMX0N4-0 ADC0 Negative Input
(32-pin Package)
ADC0 Negative Input
(48-pin Package)
00000 P1.0 P2.0
00001 P1.1 P2.1
00010 P1.2 P2.2
00011 P1.3 P2.3
00100 P1.4 P2.5
00101 P1.5 P2.6
00110 P1.6 P3.0
00111 P1.7 P3.1
01000 P2.0 P3.4
01001 P2.1 P3.5
01010 P2.2 P3.7
01011 P2.3 P4.0
01100 P2.4 P4.3
01101 P2.5 P4.4
01110 P2.6 P4.5
01111 P2.7 P4.6
10000 P3.0 RESERVED
10001 P0.0 P0.3
10010 P0.1 P0.4
10011 P0.4 P1.1
10100 P0.5 P1.2
10101 - 11101 RESERVED RESERVED
11110 VREF VREF
11111 GND (Single-Ended Mode) GND (Single-Ended Mode)