EFM32G200F16 Energy Micro, EFM32G200F16 Datasheet - Page 245

• Manufacturer Part Number: EFM32G200F16
• Description: MCU 32BIT 16KB FLASH 32-QFN
• Manufacturer: Energy Micro
• Series: Geckor

Specifications of EFM32G200F16

• 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: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K 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: 8 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

19.3.1.3 Clock Source
19.3.1.3.1 Peripheral Clock (HFPERCLK)
19.3.1.3.2 Compare/ Capture Channel 1 Input
2010-09-06 - d0001_Rev1.00
The RUNNING bit in TIMERn_STATUS indicates if the Timer is running or not. If the SYNC bit in
TIMERn_CTRL is set, the Timer is started/stopped/reloaded (external pin or PRS) when any of the other
timers are started/stopped/reloaded.
The DIR bit in TIMERn_STATUS indicates the counting direction of the Timer at any given time. The
counter value can be read or written by software through the CNT field in TIMERn_CNT. In Up/Down-
Count mode the count direction will be set to up if the CNT value is written by software.
Figure 19.2. TIMER Hardware Timer/Counter Control
The counter can be clocked from several sources, which are all synchronized with the peripheral clock
(HFPERCLK). See Figure 19.3 (p. 245) .
Figure 19.3. TIMER Clock Selection
The peripheral clock (HFPERCLK) can be used as a source with a configurable prescale factor of
2^PRESC, where PRESC is an integer between 0 and 10, which is set in PRESC in TIMERn_CTRL.
The prescaler is stopped and reset when the timer is stopped.
The Timer can also be clocked by positive and/or negative edges on the Compare/Capture channel 1
input. This input can either come from the TIMn_CC1 pin or one of the PRS channels. This input must
have a maximum frequency of f
that triggers a start (through RISEA/FALLA in TIMERn_CTRL), the starting pulse will not update the
Counter Value.
Com pa r e /Ca pt u r e ch a n n e l 0
(Controlled by TIMERn_CC0_CTRL)
Com pa r e /Ca pt u r e ch a n n e l 1
(Controlled by TIMERn_CC1_CTRL)
PRS channels
PRS channels
TIMn_CC0
TIMn_CC1
PRSSEL
PRSSEL
Cou n t e r
(Controlled by TIMERn_CTRL)
Cou n t e r
(Controlled by TIMERn_CTRL)
INSEL
INSEL
HFPERCLK
Filter
Filter
HFPERCLK
FILT
FILT
TIMERn
/2. Note that when clocking the Timer from the same pulse
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Prescaler
PRESC
ICEDGE
ICEDGE
245
RISEA
CLKSEL
FALLA
Capture 1
Capture 0
Counter
Input
Input
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Start
Stop
Reload& Start
Cou n t e r