EFM32G200F64 Energy Micro, EFM32G200F64 Datasheet - Page 100

• Manufacturer Part Number: EFM32G200F64
• Description: MCU 32BIT 64KB FLASH 32-QFN
• Manufacturer: Energy Micro
• Series: Geckor

Specifications of EFM32G200F64

• Core Processor: ARM® Cortex-M3™
• Core Size: 32-Bit
• Speed: 32MHz
• Connectivity: EBI/EMI, I²C, IrDA, SmartCard, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.8 V
• Data Converters: A/D 4x12b, D/A 1x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-VQFN Exposed Pad
• Processor Series: EFM32G200
• Core: ARM Cortex-M3
• Data Bus Width: 32 bit
• Data Ram Size: 16 KB
• Interface Type: I2C, UART
• Maximum Clock Frequency: 32 MHz
• Number Of Programmable I/os: 24
• Number Of Timers: 2
• Operating Supply Voltage: 1.8 V to 3.8 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

11.5 Register Description
11.5.1 CMU_CTRL - CMU Control Register
31:24
23
22:20
19:18
17
16:14
13
12:11
Offset
0x000
Reset
Access
Name
Bit
2010-09-06 - d0001_Rev1.00
Reserved
CLKOUTSEL1
Controls the clock output multiplexer. To actually output on the pin, set CLKOUT1PEN in CMU_ROUTE.
CLKOUTSEL0
Controls the clock output multiplexer. To actually output on the pin, set CLKOUT0PEN in CMU_ROUTE.
LFXOTIMEOUT
Configures the start-up delay for LFXO.
LFXOBUFCUR
This value has been set during calibration and should not be changed.
Reserved
LFXOBOOST
Adjusts start-up boost current for LFXO.
LFXOMODE
Set this to configure the external source for the LFXO. The oscillator setting takes effect when 1 is written to LFXOEN in
CMU_OSCENCMD. The oscillator setting is reset to default when 1 is written to LFXODIS in CMU_OSCENCMD.
Name
Value
0
1
Value
0
1
2
3
4
5
6
Value
0
1
2
3
Value
0
1
Mode
LFRCO
LFXO
Mode
HFRCO
HFXO
HFCLK2
HFCLK4
HFCLK8
HFCLK16
ULFRCO
Mode
8CYCLES
1KCYCLES
16KCYCLES
32KCYCLES
Mode
70PCENT
100PCENT
0
0x0
0x3
0
1
0x0
Reset
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
RW
RW
RW
RW
RW
RW
Access
Description
LFRCO (directly from oscillator)
LFXO (directly from oscillator)
Description
HFRCO (directly from oscillator)
HFXO (directly from oscillator)
HFCLK/2
HFCLK/4
HFCLK/8
HFCLK/16
ULFRCO (directly from oscillator)
Description
Timeout period of 8 cycles
Timeout period of 1024 cycles
Timeout period of 16384 cycles
Timeout period of 32768 cycles
Description
70 %
100 % (default)
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100
Bit Position
Clock Output Select 1
Clock Output Select 0
LFXO Timeout
LFXO Boost Buffer Current
LFXO Start-up Boost Current
LFXO Mode
Description
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