C8051F320DK Silicon Laboratories Inc, C8051F320DK Datasheet - Page 116
![DEV KIT FOR C8051F320/F321](/photos/9/20/92068/c8051f320dk_sml.jpg)
C8051F320DK
Manufacturer Part Number
C8051F320DK
Description
DEV KIT FOR C8051F320/F321
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051F320DK
Contents
Evaluation Board, Power Supply, USB Cables, Adapter and Documentation
Processor To Be Evaluated
C8051F320/F321
Interface Type
USB
Silicon Manufacturer
Silicon Labs
Core Architecture
8051
Silicon Core Number
C8051F320
Silicon Family Name
C8051F32x
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
Silicon Laboratories C8051F320, C8051F321
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1260
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F320DK
Manufacturer:
SiliconL
Quantity:
4
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C8051F320/1
13. Oscillators
C8051F320/1 devices include a programmable internal oscillator, an external oscillator drive circuit, and a
4x Clock Multiplier. The internal oscillator can be enabled/disabled and calibrated using the OSCICN and
OSCICL registers, as shown in Figure 13.1. The system clock (SYSCLK) can be derived from the internal
oscillator, external oscillator circuit, or the 4x Clock Multiplier divided by 2. The USB clock (USBCLK) can
be derived from the internal oscillator, external oscillator, or 4x Clock Multiplier. Oscillator electrical specifi-
cations are given in Table 13.3 on page 125.
13.1. Programmable Internal Oscillator
All C8051F320/1 devices include a programmable internal oscillator that defaults as the system clock after
a system reset. The internal oscillator period can be programmed via the OSCICL register as defined by
Equation 13.1, where f
internal oscillator period, and OSCICL is a change to the value held in register OSCICL.
116
VDD
Option 2
XTAL2
Option 1
Option 4
10M
XTAL2
Option 3
XTAL2
XTAL1
XTAL2
BASE
is the frequency of the internal oscillator following a reset, T is the change in
Figure 13.1. Oscillator Diagram
OSCICL
Circuit
Input
Programmable
Internal Clock
Generator
OSCXCN
OSC
EN
Rev. 1.4
EXOSC / 2
OSCICN
IOSC
EXOSC
EXOSC
IOSC
CLKMUL
n
Clock Multiplier
x 2
x 2
EXOSC / 2
EXOSC / 3
EXOSC / 4
IOSC / 2
EXOSC
CLKSEL
SYSCLK
USBCLK
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