C8051F320-TB Silicon Laboratories Inc, C8051F320-TB Datasheet - Page 104
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C8051F320-TB
Manufacturer Part Number
C8051F320-TB
Description
BOARD PROTOTYPING W/C8051F320
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051F320-TB
Contents
Board
Processor To Be Evaluated
C8051F320/F321
Interface Type
USB
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
C8051F320
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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C8051F320/1
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Bit7:
Bit6:
Bit5:
Bit4:
Bit3:
Bit2:
Bit1:
Bit0:
Note: For bits that act as both reset source enables (on a write) and reset indicator flags (on a
read), read-modify-write instructions read and modify the source enable only. This applies to
bits: USBRSF, C0RSEF, SWRSF, MCDRSF, PORSF.
USBRSF FERROR C0RSEF
R/W
Bit7
USBRSF: USB Reset Flag
0: Read: Last reset was not a USB reset; Write: USB resets disabled.
1: Read: Last reset was a USB reset; Write: USB resets enabled.
FERROR: Flash Error Indicator.
0: Source of last reset was not a Flash read/write/erase error.
1: Source of last reset was a Flash read/write/erase error.
C0RSEF: Comparator0 Reset Enable and Flag.
0: Read: Source of last reset was not Comparator0; Write: Comparator0 is not a reset
source.
1: Read: Source of last reset was Comparator0; Write: Comparator0 is a reset source
(active-low).
SWRSF: Software Reset Force and Flag.
0: Read: Source of last reset was not a write to the SWRSF bit; Write: No Effect.
1: Read: Source of last was a write to the SWRSF bit; Write: Forces a system reset.
WDTRSF: Watchdog Timer Reset Flag.
0: Source of last reset was not a WDT timeout.
1: Source of last reset was a WDT timeout.
MCDRSF: Missing Clock Detector Flag.
0: Read: Source of last reset was not a Missing Clock Detector timeout; Write: Missing
Clock Detector disabled.
1: Read: Source of last reset was a Missing Clock Detector timeout; Write: Missing Clock
Detector enabled; triggers a reset if a missing clock condition is detected.
PORSF: Power-On / VDD Monitor Reset Flag.
This bit is set anytime a power-on reset occurs. Writing this bit selects/deselects the VDD
monitor as a reset source. Note: writing ‘1’ to this bit before the VDD monitor is enabled
and stabilized can cause a system reset. See register VDM0CN (Figure 10.1).
0: Read: Last reset was not a power-on or VDD monitor reset; Write: VDD monitor is not a
reset source.
1: Read: Last reset was a power-on or VDD monitor reset; all other reset flags indetermi-
nate; Write: VDD monitor is a reset source.
PINRSF: HW Pin Reset Flag.
0: Source of last reset was not /RST pin.
1: Source of last reset was /RST pin.
Bit6
R
SFR Definition 10.2.
R/W
Bit5
SWRSF
R/W
Bit4
WDTRSF MCDRSF
Rev. 1.4
RSTSRC: Reset Source
Bit3
R
R/W
Bit2
PORSF
R/W
Bit1
PINRSF
Bit0
R
SFR Address:
Reset Value
Variable
0xEF
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