C8051F131R Silicon Labs, C8051F131R Datasheet - Page 99
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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Bits7–0: ADC2 Data Word.
SFR Page:
SFR Address:
R/W
Bit7
–VREF * (128/128)
VREF * (255/256)
VREF * (128/256)
VREF * (127/128)
–VREF * (64/128)
Single-Ended Example:
8-bit ADC Data Word appears in the ADC2 Data Word Register as follows:
Example: ADC2 Data Word Conversion Map, Single-Ended AIN2.0 Input
Differential Example:
8-bit ADC Data Word appears in the ADC2 Data Word Register as follows:
Example: ADC2 Data Word Conversion Map, Differential AIN2.0-AIN2.1 Input
Code
VREF * (64/256)
VREF * (64/128)
Code
AIN2.0–AIN2.1
AIN2.0–AGND
2
0xBE
(Volts)
(Volts)
R/W
Bit6
=
(AMX2CF = 0x00; AMX2SL = 0x00)
0
(AMX2CF = 0x01; AMX2SL = 0x00)
0
=
Vin
Vin
SFR Definition 7.5. ADC2: ADC2 Data Word
Figure 7.4. ADC2 Data Word Example
R/W
Bit5
------------------------ -
2 V
-------------- -
VREF
Gain
REF
Gain
0x80 (-128d)
0xC0 (-64d)
ADC2
ADC2
256
0xFF
0x7F
0x80
0x40
0x00
0x40
0x00
R/W
Bit4
256
Rev. 1.4
R/W
Bit3
C8051F120/1/2/3/4/5/6/7
R/W
Bit2
C8051F130/1/2/3
R/W
Bit1
R/W
Bit0
00000000
Reset Value
99
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