C8051F350DK Silicon Laboratories Inc, C8051F350DK Datasheet - Page 115

• Manufacturer Part Number: C8051F350DK
• Description: DEV KIT FOR F350/351/352/353
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F350DK

• Contents: Evaluation Board, Power Supply, USB Cables, Adapter and Documentation
• Processor To Be Evaluated: C8051F35x
• Interface Type: USB
• Silicon Manufacturer: Silicon Labs
• Core Architecture: 8051
• Silicon Core Number: C8051F350
• Silicon Family Name: C8051F35x
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: C8051F350, 351, 352, 353
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1083

14. Reset Sources
Reset circuitry allows the controller to be easily placed in a predefined default condition. On entry to this
reset state, the following occur:
•
•
•
•
All SFRs are reset to the predefined values noted in the SFR detailed descriptions. The contents of internal
data memory are unaffected during a reset; any previously stored data is preserved. However, since the
stack pointer SFR is reset, the stack is effectively lost, even though the data on the stack is not altered.
The Port I/O latches are reset to 0xFF (all logic ones) in open-drain mode. Weak pull-ups are enabled dur-
ing and after the reset. For V
exits the reset state.
On exit from the reset state, the program counter (PC) is reset, and the system clock defaults to the inter-
nal oscillator. Refer to Section “17. Oscillators’ on page 129 for information on selecting and configuring
the system clock source. The Watchdog Timer is enabled with the system clock divided by 12 as its clock
source (Section “23.3. Watchdog Timer Mode’ on page 220 details the use of the Watchdog Timer). Pro-
gram execution begins at location 0x0000.
CIP-51 halts program execution
Special Function Registers (SFRs) are initialized to their defined reset values
External Port pins are forced to a known state
Interrupts and timers are disabled.
Px.x
Px.x
System
Clock
Comparator 0
+
-
Detector
Missing
C0RSEF
Clock
(one-
shot)
Microcontroller
EN
DD
Extended Interrupt
Monitor and power-on resets, the /RST pin is driven low until the device
CIP-51
Handler
Core
Figure 14.1. Reset Sources
WDT
PCA
EN
VDD
System Reset
Supply
Monitor
+
-
Rev. 1.1
Enable
(Software Reset)
SWRSF
'0'
Power On
Reset
C8051F350/1/2/3
Operation
FLASH
Errant
(wired-OR)
Reset
Funnel
/RST
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