C8051F330DR Silicon Labs, C8051F330DR Datasheet - Page 110

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C8051F330DR

Manufacturer Part Number
C8051F330DR
Description
8-bit Microcontrollers - MCU 8kB 10ADC
Manufacturer
Silicon Labs
Datasheet

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
C8051F330/1/2/3/4/5
114
Bit7:
Bits 6–0: OSCICL: Internal Oscillator Calibration Register.
Bit7:
Bit6:
Bits5–2: UNUSED. Read = 0000b, Write = don't care.
Bits1–0: IFCN1–0: Internal H-F Oscillator Frequency Control Bits.
IOSCEN
R/W
Bit7
Bit7
R
-
SFR Definition 13.1. OSCICL: Internal H-F Oscillator Calibration
UNUSED. Read = 0. Write = don’t care.
This register determines the internal oscillator period. When set to 0000000b, the H-F oscil-
lator operates at its fastest setting. When set to 1111111b, the H-F oscillator operates at its
slowest setting. On C8051F330/1/2/3/4/5 devices, the reset value is factory calibrated to
generate an internal oscillator frequency of 24.5 MHz.
IOSCEN: Internal H-F Oscillator Enable Bit.
0: Internal H-F Oscillator Disabled.
1: Internal H-F Oscillator Enabled.
IFRDY: Internal H-F Oscillator Frequency Ready Flag.
0: Internal H-F Oscillator is not running at programmed frequency.
1: Internal H-F Oscillator is running at programmed frequency.
00: SYSCLK derived from Internal H-F Oscillator divided by 8.
01: SYSCLK derived from Internal H-F Oscillator divided by 4.
10: SYSCLK derived from Internal H-F Oscillator divided by 2.
11: SYSCLK derived from Internal H-F Oscillator divided by 1.
SFR Definition 13.2. OSCICN: Internal H-F Oscillator Control
IFRDY
R/W
Bit6
Bit6
R
R/W
Bit5
Bit5
R
-
R/W
Bit4
Bit4
R
-
Rev. 1.7
R/W
Bit3
Bit3
R
-
R/W
Bit2
Bit2
R
-
IFCN1
R/W
R/W
Bit1
Bit1
IFCN0
R/W
R/W
Bit0
Bit0
SFR Address:
SFR Address:
Reset Value
11000000
Reset Value
Variable
0xB2
0xB3

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