C8051F314-GQR Silicon Laboratories Inc, C8051F314-GQR Datasheet - Page 64
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C8051F314-GQR
Manufacturer Part Number
C8051F314-GQR
Description
IC 8051 MCU 8K FLASH 32LQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F31xr
Specifications of C8051F314-GQR
Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
29
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
1.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-LQFP
For Use With
336-1445 - ADAPTER PROGRAM TOOLSTICK F310
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Available stocks
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Quantity
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Company:
Part Number:
C8051F314-GQR
Manufacturer:
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Quantity:
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Part Number:
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Manufacturer:
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Quantity:
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C8051F310/1/2/3/4/5/6/7
5.4.2. Window Detector In Differential Mode
Figure 5.8 shows two example window comparisons for right-justified, differential data, with
ADC0LTH:ADC0LTL = 0x0040 (+64d) and ADC0GTH:ADC0GTH = 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 AD0WINT interrupt will be gen-
erated if the ADC0 conversion word (ADC0H:ADC0L) is within the range defined by ADC0GTH:ADC0GTL
and ADC0LTH:ADC0LTL (if 0xFFFF (-1d) < ADC0H:ADC0L < 0x0040 (64d)). In the right example, an
AD0WINT interrupt will be generated if the ADC0 conversion word is outside of the range defined by the
ADC0GT and ADC0LT registers (if ADC0H:ADC0L < 0xFFFF (-1d) or ADC0H:ADC0L > 0x0040 (+64d)).
Figure 5.9 shows an example using left-justified data with the same comparison values.
64
VREF x (511/512)
VREF x (511/512)
VREF x (64/512)
VREF x (64/512)
VREF x (-1/512)
Figure 5.8. ADC Window Compare Example: Right-Justified Differential Data
VREF x (-1/512)
Input Voltage
Input Voltage
Figure 5.9. ADC Window Compare Example: Left-Justified Differential Data
(Px.x - Px.x)
(Px.x - Px.x)
-VREF
-VREF
ADC0H:ADC0L
ADC0H:ADC0L
0xFFFF
0xFFFE
0x7FC0
0x0FC0
0xFFC0
0x01FF
0x0041
0x0040
0x003F
0x0000
0x0200
0x1040
0x1000
0x0000
0xFF80
0x8000
ADC0GTH:ADC0GTL
ADC0GTH:ADC0GTL
ADC0LTH:ADC0LTL
ADC0LTH:ADC0LTL
not affected
not affected
not affected
not affected
AD0WINT
AD0WINT
AD0WINT
AD0WINT
AD0WINT=1
AD0WINT=1
Rev. 1.7
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
(Px.x - Px.x)
(Px.x - Px.y)
-VREF
-VREF
ADC0H:ADC0L
ADC0H:ADC0L
0xFFFF
0xFFFE
0x7FC0
0x0FC0
0xFFC0
0x01FF
0x0041
0x0040
0x003F
0x0000
0x0200
0x1040
0x1000
0x0000
0xFF80
0x8000
ADC0GTH:ADC0GTL
ADC0GTH:ADC0GTL
ADC0LTH:ADC0LTL
ADC0LTH:ADC0LTL
not affected
not affected
AD0WINT
AD0WINT
AD0WINT=1
AD0WINT=1
AD0WINT=1
AD0WINT=1
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