C8051F330DR Silicon Labs, C8051F330DR Datasheet - Page 115
C8051F330DR
Manufacturer Part Number
C8051F330DR
Description
8-bit Microcontrollers - MCU 8kB 10ADC
Manufacturer
Silicon Labs
Datasheet
1.C8051F330DR.pdf
(210 pages)
Specifications of C8051F330DR
Product Category
8-bit Microcontrollers - MCU
Core
8051
Data Bus Width
8 bit
Maximum Clock Frequency
25 MHz
Program Memory Size
8 KB
Data Ram Size
768 B
On-chip Adc
No
Operating Supply Voltage
2.7 V to 3.6 V
Package / Case
QFN-20
Mounting Style
SMD/SMT
Data Rom Size
128 B
Interface Type
I2C, SPI, UART
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
17
Number Of Timers
4
On-chip Dac
No
Processor Series
C8051
Program Memory Type
Flash
Factory Pack Quantity
1500
Supply Voltage - Max
3.6 V
Supply Voltage - Min
2.7 V
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The capacitors shown in the external crystal configuration provide the load capacitance required by the
crystal for correct oscillation. These capacitors are "in series" as seen by the crystal and "in parallel" with
the stray capacitance of the XTAL1 and XTAL2 pins.
Note: The desired load capacitance depends upon the crystal and the manufacturer. Please refer to the
crystal data sheet when completing these calculations.
For example, a tuning-fork crystal of 32.768 kHz with a recommended load capacitance of 12.5 pF should
use the configuration shown in Figure 13.1, Option 1. The total value of the capacitors and the stray capac-
itance of the XTAL pins should equal 25 pF. With a stray capacitance of 3 pF per pin, the 22 pF capacitors
yield an equivalent capacitance of 12.5 pF across the crystal, as shown in Figure 13.2.
Figure 13.2. External 32.768 kHz Quartz Crystal Oscillator Connection Diagram
22pF*
* Capacitor values depend on
crystal specifications
32.768 kHz
10M
Rev. 1.7
22pF*
XTAL1
XTAL2
C8051F330/1/2/3/4/5
119
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