C8051F930-TB Silicon Laboratories Inc, C8051F930-TB Datasheet - Page 179
![BOARD TARGET/PROTO W/C8051F930](/photos/9/25/92560/c8051f930-tb_sml.jpg)
C8051F930-TB
Manufacturer Part Number
C8051F930-TB
Description
BOARD TARGET/PROTO W/C8051F930
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051F930-TB
Contents
Board
Processor To Be Evaluated
C8051F930
Processor Series
C8051F9xx
Data Bus Width
8 bit
Interface Type
I2C, UART, SPI
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Operating Supply Voltage
0.9 V to 3.6 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
C8051F930
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1472
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17. Voltage Regulator (VREG0)
C8051F93x-C8051F92x devices include an internal voltage regulator (VREG0) to regulate the internal
core supply to 1.8 V from a VDD/DC+ supply of 1.8 to 3.6 V. Electrical characteristics for the on-chip
regulator are specified in the Electrical Specifications chapter.
The REG0CN register allows the Precision Oscillator Bias to be disabled, reducing supply current in all
non-sleep power modes. This bias should only be disabled when the precision oscillator is not being used.
The internal regulator (VREG0) is disabled when the device enters sleep mode and remains enabled when
the device enters suspend mode. See Section “14. Power Management” on page 156 for complete details
about low power modes.
SFR Definition 17.1. REG0CN: Voltage Regulator Control
SFR Page = 0x0; SFR Address = 0xC9
17.1. Voltage Regulator Electrical Specifications
See Table 4.15 on page 64 for detailed Voltage Regulator Electrical Specifications.
Reset
Name
Type
Bit
3:1
Bit
7
6
5
4
0
OSCBIAS Precision Oscillator Bias.
Reserved Reserved.
Reserved Reserved.
Reserved Reserved.
Unused
Unused
Name
R
7
0
Unused.
Read = 0b. Write = Don’t care.
Read = 0b. Must Write 0b.
Read = 0b. Must Write 0b.
When set to 1, the bias used by the precision oscillator is forced on. If the precision
oscillator is not being used, this bit may be cleared to 0 to save approximately 80 µA
of supply current in all non-Sleep power modes. If disabled then re-enabled, the pre-
cision oscillator bias requires 4 µs of settling time.
Unused.
Read = 000b. Write = Don’t care.
Read = 0b. Must Write 0b.
Reserved
R/W
0
6
Reserved OSCBIAS
R/W
5
0
R/W
Rev. 1.1
4
1
C8051F93x-C8051F92x
Function
R
3
0
R
2
0
R
1
0
Reserved
R/W
0
0
179
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