C8051F040-TB Silicon Laboratories Inc, C8051F040-TB Datasheet - Page 102

• Manufacturer Part Number: C8051F040-TB
• Description: BOARD PROTOTYPING W/C8051F040
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F040-TB

• Contents: Board
• Processor To Be Evaluated: C8051F04x
• Interface Type: USB
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: C8051F040
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

C8051F040/1/2/3/4/5/6/7
7.3.2. Window Detector in Differential Mode
Figure 7.6 shows two example window comparisons for differential mode, with ADC2LT = 0x10 (+16d) and
ADC2GT = 0xFF (–1d). Notice that in Differential mode, the codes vary from –VREF to VREF x (127/128)
and are represented as 8-bit 2s complement signed integers. In the left example, an AD2WINT interrupt
will be generated if the ADC2 conversion word (ADC2L) is within the range defined by ADC2GT and
ADC2LT (if 0xFF (–1d) < ADC2 < 0x0F (16d)). In the right example, an AD2WINT interrupt will be gener-
ated if ADC2 is outside of the range defined by ADC2GT and ADC2LT (if ADC2 < 0xFF (–1d) or ADC2 >
0x10 (+16d)).
102
REF x (127/128)
REF x (16/128)
REF x (-1/256)
Input Voltage
(P1.x - P1.y)
-REF
Figure 7.6. ADC Window Compare Examples, Differential Mode
0x80 (-128d)
0x7F (127d)
0x0F (15d)
0x11 (17d)
0x10 (16d)
0xFF (-1d)
0xFE (-2d)
0x00 (0d)
ADC2
not affected
not affected
AD2WINT
AD2WINT
ADC2GT
ADC2LT
AD2WINT=1
Rev. 1.5
REF x (127/128)
REF x (16/128)
REF x (-1/256)
Input Voltage
(P1.x - P1.y)
-REF
0x80 (-128d)
0x7F (127d)
0x11 (17d)
0x10 (16d)
0x0F (15d)
0xFF (-1d)
0xFE (-2d)
0x00 (0d)
ADC2
not affected
AD2WINT
ADC2GT
ADC2LT
AD2WINT=1
AD2WINT=1