C8051F130 Silicon Laboratories Inc, C8051F130 Datasheet - Page 115
C8051F130
Manufacturer Part Number
C8051F130
Description
IC 8051 MCU 128K FLASH 100TQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F13xr
Specifications of C8051F130
Core Processor
8051
Core Size
8-Bit
Speed
100MHz
Connectivity
EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
64
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
8.25K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Other names
336-1147
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9.2.
On the C8051F121/3/5/7 devices, the REF0CN register also allows selection of the voltage reference
source for ADC0 and ADC2, as shown in SFR Definition 9.2. Bits AD0VRS and AD2VRS in the REF0CN
register select the ADC0 and ADC2 voltage reference sources, respectively. The VREFA pin provides a
voltage reference input for ADC0 and ADC2, which can be connected to an external precision reference or
the internal voltage reference. ADC0 may also reference the DAC0 output internally, and ADC2 may refer-
ence the analog power supply voltage, via the VREF multiplexers shown in Figure 9.2.
Figure 9.2. Voltage Reference Functional Block Diagram (C8051F121/3/5/7)
Reference Configuration on the C8051F121/3/5/7
Reference
External
Voltage
Circuit
DGND
VDD
Recommended Bypass
4.7F
R1
Capacitors
+
0.1F
VREFA
VREF
Rev. 1.4
REF0CN
C8051F120/1/2/3/4/5/6/7
DAC0
DAC1
Ref
REFBE
x2
AV+
1
0
0
1
C8051F130/1/2/3
Band-Gap
BIASE
1.2V
EN
ADC2
ADC0
Ref
Ref
Bias to
ADCs,
DACs
115
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