C8051F303-GSR Silicon Labs, C8051F303-GSR Datasheet - Page 46
C8051F303-GSR
Manufacturer Part Number
C8051F303-GSR
Description
8-bit Microcontrollers - MCU 8KB 14Pin MCU
Manufacturer
Silicon Labs
Datasheet
1.C8051F301-GSR.pdf
(178 pages)
Specifications of C8051F303-GSR
Rohs
yes
Core
8051
Processor Series
C8051
Data Bus Width
8 bit
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C8051F300/1/2/3/4/5
5.4.2. Window Detector In Differential Mode
Figure 5.7 shows two example window comparisons for differential mode, with ADC0LT = 0x10 (+16d) and
ADC0GT = 0xFF (–1d). Notice that in Differential mode, the codes vary from –VREF to VREF x (127/128)
and are represented as 8-bit 2’s complement signed integers. In the left example, an AD0WINT interrupt
will be generated if the ADC0 conversion word (ADC0L) is within the range defined by ADC0GT and
ADC0LT (if 0xFF (–1d) < ADC0 < 0x10 (16d)). In the right example, an AD0WINT interrupt will be gener-
ated if ADC0 is outside of the range defined by ADC0GT and ADC0LT (if ADC0 < 0xFF (–1d) or ADC0 >
0x10 (+16d)).
46
Bits7–0: ADC0 Greater-Than Data Word.
Bits7–0: ADC0 Less-Than Data Word.
REF x (127/128)
REF x (16/128)
REF x (-1/256)
Input Voltage
(P0.x - P0.y)
SFR Definition 5.5. ADC0GT: ADC0 Greater-Than Data Byte (C8051F300/2)
R/W
R/W
Bit7
Bit7
-REF
SFR Definition 5.6. ADC0LT: ADC0 Less-Than Data Byte (C8051F300/2)
Figure 5.7. ADC Window Compare Examples, Differential Mode
0x80 (-128d)
0x7F (127d)
R/W
R/W
0x11 (17d)
0x10 (16d)
0x0F (15d)
0xFF (-1d)
0xFE (-2d)
Bit6
Bit6
0x00 (0d)
ADC0
R/W
R/W
Bit5
Bit5
not affected
not affected
AD0WINT
AD0WINT
ADC0GT
ADC0LT
R/W
R/W
Bit4
Bit4
AD0WINT=1
Rev. 2.9
R/W
R/W
Bit3
Bit3
REF x (127/128)
REF x (16/128)
REF x (-1/256)
Input Voltage
(P0.x - P0.y)
-REF
R/W
R/W
Bit2
Bit2
0x80 (-128d)
0x7F (127d)
0x11 (17d)
0x10 (16d)
0x0F (15d)
0xFF (-1d)
0xFE (-2d)
0x00 (0d)
ADC0
R/W
R/W
Bit1
Bit1
not affected
R/W
R/W
Bit0
Bit0
AD0WINT
ADC0GT
ADC0LT
SFR Address:
SFR Address:
AD0WINT=1
AD0WINT=1
Reset Value
00000000
Reset Value
11111111
0xC4
0xC6
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