C8051F130 Silicon Laboratories Inc, C8051F130 Datasheet - Page 117
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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9.3.
On the C8051F130/1/2/3 devices, the VREF0 pin provides a voltage reference input for ADC0, which can
be connected to an external precision reference or the internal voltage reference, as shown in Figure 9.3.
The REF0CN register for the C8051F130/1/2/3 is described in SFR Definition 9.3.
Bits7–5: UNUSED. Read = 000b; Write = don’t care.
Bits4–3: Reserved: Must be written to 0.
Bit2:
Bit1:
Bit0:
SFR Page:
SFR Address:
Figure 9.3. Voltage Reference Functional Block Diagram (C8051F130/1/2/3)
R/W
Bit7
-
Reference Configuration on the C8051F130/1/2/3
SFR Definition 9.3. REF0CN: Reference Control (C8051F130/1/2/3)
TEMPE: Temperature Sensor Enable Bit.
0: Internal Temperature Sensor Off.
1: Internal Temperature Sensor On.
BIASE: ADC/DAC Bias Generator Enable Bit. (Must be ‘1’ if using ADC or VREF).
0: Internal Bias Generator Off.
1: Internal Bias Generator On.
REFBE: Internal Reference Buffer Enable Bit.
0: Internal Reference Buffer Off.
1: Internal Reference Buffer On. Internal voltage reference is driven on the VREF pin.
0
0xD1
R/W
Bit6
Reference
-
External
Voltage
Circuit
DGND
VDD
Recommended Bypass
4.7F
R/W
Bit5
R1
-
Capacitors
+
Reserved Reserved
0.1F
R/W
Bit4
VREF0
VREF
Rev. 1.4
R/W
Bit3
C8051F120/1/2/3/4/5/6/7
REF0CN
x2
Ref
ADC0
TEMPE
R/W
Bit2
Band-Gap
C8051F130/1/2/3
Bias to ADC
1.2V
EN
BIASE
R/W
Bit1
REFBE
R/W
Bit0
00000000
Reset Value
117
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