C8051F012 View Datasheet(PDF) - Unspecified
Part Name
Description
Manufacturer
C8051F012 Datasheet PDF : 170 Pages
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C8051F000/1/2/5/6/7
C8051F010/1/2/5/6/7
PRELIMINARY
Figure 5.8. ADC0H: ADC Data Word MSB Register (C8051F00x)
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset Value
00000000
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
SFR Address:
0xBF
Bits7-0: ADC Data Word Bits
For ADLJST = 1: Upper 8-bits of the 12-bit ADC Data Word.
For ADLJST = 0: Bits7-4 are the sign extension of Bit3. Bits 3-0 are the upper 4-bits of the
12-bit ADC Data Word.
Figure 5.9. ADC0L: ADC Data Word LSB Register (C8051F00x)
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
Bits7-0: ADC Data Word Bits
For ADLJST = 1: Bits7-4 are the lower 4-bits of the 12-bit ADC Data Word. Bits3-0 will
always read 0.
For ADLJST = 0: Bits7-0 are the lower 8-bits of the 12-bit ADC Data Word.
Reset Value
00000000
SFR Address:
0xBE
NOTE: Resulting 12-bit ADC Data Word appears in the ADC Data Word Registers as follows:
ADC0H[3:0]:ADC0L[7:0], if ADLJST = 0
(ADC0H[7:4] will be sign extension of ADC0H.3 if a differential reading, otherwise = 0000b)
ADC0H[7:0]:ADC0L[7:4], if ADLJST = 1
(ADC0L[3:0] = 0000b)
EXAMPLE: ADC Data Word Conversion Map, AIN0 Input in Single-Ended Mode
(AMX0CF=0x00, AMX0SL=0x00)
AIN0 – AGND (Volts)
ADC0H:ADC0L
(ADLJST = 0)
ADC0H:ADC0L
(ADLJST = 1)
REF x (4095/4096)
0x0FFF
0xFFF0
REF x ½
0x0800
0x8000
REF x (2047/4096)
0x07FF
0x7FF0
0
0x0000
0x0000
EXAMPLE: ADC Data Word Conversion Map, AIN0-AIN1 Differential Input Pair
(AMX0CF=0x01, AMX0SL=0x00)
AIN0 – AIN1 (Volts)
ADC0H:ADC0L
(ADLJST = 0)
ADC0H:ADC0L
(ADLJST = 1)
REF x (2047/2048)
0x07FF
0x7FF0
0
0x0000
0x0000
-REF x (1/2048)
0xFFFF
0xFFF0
-REF
0xF800
0x8000
4.2001; Rev. 1.3
CYGNAL Integrated Products, Inc. 2001
Page 35
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