C8051F064EK Silicon Laboratories Inc, C8051F064EK Datasheet - Page 100

• Manufacturer Part Number: C8051F064EK
• Description: KIT EVAL FOR C8051F064
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F064EK

• Contents: Evaluation Board, Power Supply, USB Cables, Adapter and Documentation
• Processor To Be Evaluated: C8051F06x
• Interface Type: USB
• Silicon Manufacturer: Silicon Labs
• Core Architecture: 8051
• Silicon Core Number: C8051F064
• Silicon Family Name: C8051F06x
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: C8051F064
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1219

C8051F060/1/2/3/4/5/6/7
7.3.2. Window Detector In Differential Mode
Figure 7.17 shows two example window comparisons for right-justified, differential data, with
ADC2LTH:ADC2LTL = 0x0040 (+64d) and ADC2GTH:ADC2GTH = 0xFFFF (-1d). In differential mode, the
measurable voltage between the input pins is between -VREF and VREF*(511/512). Output codes are rep-
resented as 10-bit 2’s complement signed integers. In the left example, an AD2WINT interrupt will be gen-
erated if the ADC2 conversion word (ADC2H:ADC2L) is within the range defined by ADC2GTH:ADC2GTL
and ADC2LTH:ADC2LTL (if 0xFFFF (-1d) < ADC2H:ADC2L < 0x0040 (64d)). In the right example, an
AD2WINT interrupt will be generated if the ADC2 conversion word is outside of the range defined by the
ADC2GT and ADC2LT registers (if ADC2H:ADC2L < 0xFFFF (-1d) or ADC2H:ADC2L > 0x0040 (+64d)).
Figure 7.18 shows an example using left-justified data with the same comparison values.
100
VREF x (511/512)
VREF x (511/512)
VREF x (64/512)
VREF x (64/512)
VREF x (-1/512)
VREF x (-1/512)
Input Voltage
Input Voltage
(P1.x - P1.y)
(P1.x - P1.y)
-VREF
-VREF
Figure 7.17. ADC Window Compare Example: Right-Justified Differential Data
Figure 7.18. ADC Window Compare Example: Left-Justified Differential Data
ADC2H:ADC2L
ADC2H:ADC2L
0xFFFF
0xFFFE
0x7FC0
0x0FC0
0xFFC0
0xFF80
0x01FF
0x0041
0x0040
0x003F
0x0000
0x0200
0x1040
0x1000
0x0000
0x8000
ADC2GTH:ADC2GTL
ADC2GTH:ADC2GTL
ADC2LTH:ADC2LTL
ADC2LTH:ADC2LTL
not affected
not affected
not affected
not affected
AD2WINT
AD2WINT
AD2WINT
AD2WINT
AD2WINT=1
AD2WINT=1
Rev. 1.2
VREF x (511/512)
VREF x (511/512)
VREF x (64/512)
VREF x (64/512)
VREF x (-1/512)
VREF x (-1/512)
Input Voltage
Input Voltage
(P1.x - P1.y)
(P1.x - P1.y)
-VREF
-VREF
ADC2H:ADC2L
ADC2H:ADC2L
0xFFC0
0xFFFF
0xFFFE
0x7FC0
0x0FC0
0xFF80
0x01FF
0x0041
0x0040
0x003F
0x0000
0x0200
0x1040
0x1000
0x0000
0x8000
ADC2GTH:ADC2GTL
ADC2GTH:ADC2GTL
ADC2LTH:ADC2LTL
ADC2LTH:ADC2LTL
not affected
not affected
AD2WINT
AD2WINT
AD2WINT=1
AD2WINT=1
AD2WINT=1
AD2WINT=1