C8051F333-GMR Silicon Laboratories Inc, C8051F333-GMR Datasheet - Page 110

• Manufacturer Part Number: C8051F333-GMR
• Description: IC 8051 MCU 4K FLASH 20MLP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F33xr

Specifications of C8051F333-GMR

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 17
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-QFN
• Processor Series: C8051F3x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 768 B
• Interface Type: I2C, SPI, UART
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 17
• Number Of Timers: 4
• Operating Supply Voltage: 2.7 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: KSK-SL-TOOLSTICK, PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F330DK
• Minimum Operating Temperature: - 40 C
• For Use With: 336-1451 - ADAPTER PROGRAM TOOLSTICK F330
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

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