C8051F131R Silicon Labs, C8051F131R Datasheet - Page 101
![no-image](/images/no-image-200.jpg)
C8051F131R
Manufacturer Part Number
C8051F131R
Description
8-bit Microcontrollers - MCU 128kB 100MIPS 8448B RAM
Manufacturer
Silicon Labs
Datasheet
1.C8051F133R.pdf
(350 pages)
Specifications of C8051F131R
Product Category
8-bit Microcontrollers - MCU
Core
8051
Data Bus Width
8 bit
Maximum Clock Frequency
100 MHz
Program Memory Size
128 KB
Data Ram Size
8.25 KB
On-chip Adc
Yes
Operating Supply Voltage
2.7 V to 3.6 V
Package / Case
TQFP-64
Mounting Style
SMD/SMT
A/d Bit Size
10 bit
A/d Channels Available
9
Data Rom Size
64 KB
Interface Type
I2C, SMBus, SPI, UART
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
32
Number Of Timers
16 bit
Processor Series
C8051
Program Memory Type
Flash
Factory Pack Quantity
500
Supply Voltage - Max
3.6 V
Supply Voltage - Min
3 V
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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*(127/128)
and are represented as 8-bit 2’s 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)).
(AIN2.x - AIN2.y)
REF x (127/128)
REF x (16/128)
REF x (-1/256)
Input Voltage
-REF
Figure 7.6. ADC2 Window Compare Examples, Differential Mode
0x80 (-128d)
0x7F (127d)
0x11 (17d)
0x10 (16d)
0x0F (15d)
0xFF (-1d)
0xFE (-2d)
0x00 (0d)
ADC2
not affected
not affected
AD2WINT
AD2WINT
ADC2GT
ADC2LT
AD2WINT=1
Rev. 1.4
(AIN2.x - AIN2.y)
REF x (127/128)
REF x (16/128)
REF x (-1/256)
C8051F120/1/2/3/4/5/6/7
Input Voltage
-REF
0x80 (-128d)
0x7F (127d)
0x0F (15d)
0x11 (17d)
0x10 (16d)
0xFF (-1d)
0xFE (-2d)
0x00 (0d)
ADC2
C8051F130/1/2/3
not affected
AD2WINT
ADC2GT
ADC2LT
AD2WINT=1
AD2WINT=1
101
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