C8051F313R Silicon Labs, C8051F313R Datasheet - Page 33

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C8051F313R

Manufacturer Part Number
C8051F313R
Description
8-bit Microcontrollers - MCU 8KB 10ADC
Manufacturer
Silicon Labs
Datasheet

Specifications of C8051F313R

Product Category
8-bit Microcontrollers - MCU
Core
8051
Data Bus Width
8 bit
Maximum Clock Frequency
25 MHz
Program Memory Size
8 KB
Data Ram Size
1.25 KB
On-chip Adc
Yes
Operating Supply Voltage
2.7 V to 3.6 V
Package / Case
QFN-28
Mounting Style
SMD/SMT
A/d Bit Size
10 bit
A/d Channels Available
17
Data Rom Size
128 B
Interface Type
I2C, SMBus, SPI, UART
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
25
Number Of Timers
5
On-chip Dac
No
Processor Series
C8051
Program Memory Type
Flash
Factory Pack Quantity
1500
Supply Voltage - Max
3.6 V
Supply Voltage - Min
2.7 V
1.7.
The C8051F310/1/2/3/6 devices include an on-chip 10-bit SAR ADC with a 25-channel differential input
multiplexer. With a maximum throughput of 200 ksps, the ADC offers true 10-bit accuracy with an INL of
±1LSB. The ADC system includes a configurable analog multiplexer that selects both positive and nega-
tive ADC inputs. Ports1-3 are available as an ADC inputs; additionally, the on-chip Temperature Sensor
output and the power supply voltage (V
ADC to save power.
Conversions can be started in six ways: a software command, an overflow of Timer 0, 1, 2, or 3, or an
external convert start signal. This flexibility allows the start of conversion to be triggered by software
events, a periodic signal (timer overflows), or external HW signals. Conversion completions are indicated
by a status bit and an interrupt (if enabled). The resulting 10-bit data word is latched into the ADC data
SFRs upon completion of a conversion.
Window compare registers for the ADC data can be configured to interrupt the controller when ADC data is
either within or outside of a specified range. The ADC can monitor a key voltage continuously in back-
ground mode, but not interrupt the controller unless the converted data is within/outside the specified
range.
P1.6, P1.7 available on
P2.6, P2.7 available on
P1.6, P1.7 available on
P2.6, P2.7 available on
C8051F310/1/2/3/4/5
C8051F310/1/2/3/4/5
C8051F310/1/2/3/4/5
C8051F310/1/2/3/4/5
10-Bit Analog to Digital Converter
C8051F310/2
C8051F310/2
available on
available on
P3.1-3.4
P3.1-3.4
Sensor
Temp
Analog Multiplexer
VREF
GND
VDD
P1.0
P1.7
P2.0
P2.7
P3.0
P3.4
P1.0
P1.7
P2.0
P2.7
P3.0
P3.4
Figure 1.15. 10-Bit ADC Block Diagram
23-to-1
23-to-1
AMUX
AMUX
DD
) are available as ADC inputs. User firmware may shut down the
Rev. 1.7
Configuration, Control, and Data Registers
C8051F310/1/2/3/4/5/6/7
(+)
(-)
ADC
10-Bit
SAR
End of
Conversion
Interrupt
Conversion
Start
Window Compare
16
Logic
100
000
001
010
011
101
ADC Data
AD0BUSY (W)
Timer 0 Overflow
Timer 2 Overflow
Timer 1 Overflow
CNVSTR Input
Timer 3 Overflow
Registers
Window
Compare
Interrupt
33

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