C8051F34A-GM Silicon Laboratories Inc, C8051F34A-GM Datasheet - Page 140

• Manufacturer Part Number: C8051F34A-GM
• Description: IC 8051 MCU 64K FLASH MEM 32-QFN
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F34xr

Specifications of C8051F34A-GM

• Program Memory Type: FLASH
• Program Memory Size: 64KB (64K x 8)
• Package / Case: 32-QFN
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 48MHz
• 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: 4.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 17x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: C8051F3x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 4352 B
• Interface Type: I2C, SPI, UART
• 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: 10 bit
• Package: 32QFN EP
• Device Core: 8051
• Family Name: C8051F34x
• Maximum Speed: 48 MHz
• Cpu Family: C8051F34x
• Device Core Size: 8b
• Frequency (max): 48MHz
• Total Internal Ram Size: 4.25KB
• # I/os (max): 25
• Number Of Timers - General Purpose: 4
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.25V
• Operating Supply Voltage (min): 2.7V
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 32
• Package Type: QFN EP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1748 - ADAPTER TOOLSTICK FOR C8051F34X
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1350-5

C8051F340/1/2/3/4/5/6/7/8/9/A/B/C/D
140
USB Clock
External Oscillator
Bit 7:
Bits6–4: USBCLK2–0: USB Clock Select
Bit3:
Bits2–0: CLKSL2–0: System Clock Select
R/W
Bit7
Clock Signal
-
Unused. Read = 0b; Write = don’t care.
These bits select the clock supplied to USB0. When operating USB0 in full-speed mode, the
selected clock should be 48 MHz. When operating USB0 in low-speed mode, the selected
clock should be 6 MHz.
Unused. Read = 0b; Write = don’t care.
These bits select the system clock source. When operating from a system clock of 25 MHz
or less, the FLRT bit should be set to ‘0’. When operating with a system clock of greater than
25 MHz (up to 48 MHz), the FLRT bit (FLSCL.4) should be set to ‘1’. See
“10. Prefetch Engine” on page 99
*Note: This option is only available on 48 MHz devices.
R/W
Bit6
USBCLK
101-111
CLKSL
011*
000
001
010
100
101
000
001
010
100
011
110
111
SFR Definition 14.6. CLKSEL: Clock Select
USBCLK
External Oscillator / 4
Crystal Oscillator Mode
24 MHz Crystal
R/W
Bit5
Input Source Selection
Internal Oscillator
R/W
Bit4
Internal Oscillator (as determined by the
IFCN bits in register OSCICN)
for more details.
Rev. 1.3
Low-Frequency Oscillator
R/W
Bit3
External Oscillator / 2
External Oscillator / 3
External Oscillator / 4
4x Clock Multiplier / 2
Internal Oscillator / 2
4x Clock Multiplier*
-
4x Clock Multiplier
External Oscillator
External Oscillator
Selected Clock
Selected Clock
RESERVED
RESERVED
RESERVED
USBCLK = 101b
XOSCMD = 110b
XFCN = 111b
Register Bit Settings
R/W
Bit2
CLKSL
R/W
Bit1
R/W
Bit0
Section
SFR Address
00000000
Reset Value
0xA9