EFM32TG210F32 Energy Micro, EFM32TG210F32 Datasheet - Page 102

• Manufacturer Part Number: EFM32TG210F32
• Description: MCU 32BIT 32KB FLASH 32-QFN
• Manufacturer: Energy Micro
• Series: Tiny Geckor

Specifications of EFM32TG210F32

• 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: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K 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: EFM32
• Core: ARM Cortex-M3
• Data Bus Width: 32 bit
• Data Ram Size: 32 KB
• Interface Type: UART, I2C, SPI
• Maximum Clock Frequency: 32 MHz
• Number Of Programmable I/os: 17
• Number Of Timers: 1
• Operating Supply Voltage: 1.8 V to 3.8 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Processor To Be Evaluated: EFM32TG210
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

2010-12-21 - d0034_Rev0.90
Figure 11.6. HW-support for RC Oscillator Calibration
The counter operation for single and continuous mode are shown in Figure 11.7 (p. 102) and
Figure 11.8 (p. 102) respectively.
Figure 11.7. Single Calibration (CONT=0)
Figure 11.8. Continuous Calibration (CONT=1)
Down-counter
Down-counter
Up-counter
Up-counter
(Default) HFCLK
DOWNCLK Dom ain
UPCLK Dom ain
HFCLK Dom ain
AUXHFRCO
AUXHFRCO
TOP
TOP
HFRCO
HFRCO
LFRCO
LFRCO
0
0
0
0
HFXO
HFXO
LFXO
LFXO
CMU_CALCTRL.REFSEL
Calibration Started
Calibration Started
CMU_CALCTRL.DOWNSEL
DOWNCLK
UPCLK
20-bit down-counter
20-bit up-counter
SYNC
= 0 ?
Up-counter sam pled and CALRDY
Up-counter sam pled and CALRDY
Sam pled value available in
Sam pled value available in
...the world's most energy friendly microcontrollers
Calibration Stopped
(counters stopped)
interrupt flag set.
interrupt flag set.
CMU_CALCNT.
CMU_CALCNT.
102
Reload down-counter with
top value in continouous
m ode.
Take snapshot of up-counter
continouous m ode, restart
in up-counter bufffer. If in
up-counter from 0.
20-bit up-counter
CMU_CALCNT
TOP
buffer
SYNC
Up-counter sam pled and CALRDY
Sam pled value available in
Set CMU_IF.CALRDY
interrupt flag set.
CMU_CALCNT.
SYNC
Write top-value using
CMU_CALCNT before
starting calibration.
www.energymicro.com