C8051F347-GQ Silicon Laboratories Inc, C8051F347-GQ Datasheet - Page 145

• Manufacturer Part Number: C8051F347-GQ
• Description: IC 8051 MCU FLASH 32K 32LQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F34xr

Specifications of C8051F347-GQ

• Program Memory Type: FLASH
• Program Memory Size: 32KB (32K x 8)
• Package / Case: 32-LQFP
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 25
• Ram Size: 2.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 21x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: C8051F3x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 3.25 KB
• Interface Type: I2C/SMBus/SPI/UART/USB
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 25
• Number Of Timers: 4
• Operating Supply Voltage: 2.7 V to 5.25 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: KSK-SL-F34X, KSK-SL-TOOLSTICK, PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F340DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 17-ch x 10-bit
• No. Of I/o's: 25
• Ram Memory Size: 2304Byte
• Cpu Speed: 25MHz
• No. Of Timers: 4
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1748 - ADAPTER TOOLSTICK FOR C8051F34X770-1006 - ISP 4PORT FOR SILABS C8051F MCU
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1305

14. Oscillators
C8051F340/1/2/3/4/5/6/7/8/9 devices include a programmable internal high-frequency oscillator, a pro-
grammable internal low-frequency oscillator (C8051F340/1/2/3/4/5/8/9), an external oscillator drive circuit,
and a 4x Clock Multiplier. The internal high-frequency and low-frequency oscillators can be enabled/dis-
abled and adjusted using the special function registers, as shown in Figure 14.1. The system clock (SYS-
CLK) can be derived from either of the internal oscillators, the external oscillator circuit, or the 4x Clock
Multiplier divided by 2. The USB clock (USBCLK) can be derived from the internal oscillator, external oscil-
lator, or 4x Clock Multiplier. Oscillator electrical specifications are given in Table 14.1.
VDD
Option 2
XTAL2
Option 1
Option 4
10MΩ
XTAL2
Option 3
XTAL2
XTAL1
XTAL2
Figure 14.1. Oscillator Diagram
(C8051F340/1/2/3/4/5/8/9)
Programmable High-
OSCLF3-0
Frequency Oscillator
Programmable Low-
Frequency Oscillator
OSCICL
Circuit
Input
OSCXCN
OSC
EN
EN
C8051F340/1/2/3/4/5/6/7/8/9
Rev. 1.1
OSCICN
EXOSC
EXOSC / 2
IOSC
EXOSC
CLKMUL
IOSC
n
OSCLCN
Clock Multiplier
x 2
n
x 2
EXOSC / 2
EXOSC / 3
EXOSC / 4
IOSC / 2
EXOSC
CLKSEL
SYSCLK
USBCLK
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