EFM32G200F16 Energy Micro, EFM32G200F16 Datasheet - Page 255

• 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

19.3.3.1 Output Polarity
2010-09-06 - d0001_Rev1.00
Dead-time is specified individually for the rising and falling edge of the original PWM. These values
are shared across all the three PWM channels of the DTI unit. A single prescaler value is provided
for the DTI unit, meaning that both the rising and falling edge dead-times share prescaler value. The
prescaler divides the HFPERCLK
DTPRESC field in TIMER0_DTTIME. The rising and falling edge dead-times are configured in DTRISET
and DTFALLT in TIMER0_DTTIME to any number between 1-64 HFPERCLK
The value of the primary and complementary outputs in a pair will never be set active at the same time by
the DTI unit. The polarity of the outputs can be changed however, if this is required by the application. The
active values of the primary and complementary outputs are set by two the TIMER0_DTCTRL register.
The DTIPOL bit of this register specifies the base polarity. If DTIPOL =0, then the outputs are active-high,
and if DTIPOL = 1 they are active-low. The relative phase of the primary and complementary outputs is
not changed by DTIPOL, as the polarity of both outputs is changed, see Figure 19.24 (p. 255)
In some applications, it may be required that the primary outputs are active-high, while the
complementary outputs are active-low. This can be accomplished by manipulating the DTCINV bit of
the TIMER0_DTCTRL register, which inverts the polarity of the complementary outputs relative to the
primary outputs.
Example 19.1. TIMER DTI Example 1
DTIPOL = 0 and DTCINV = 0 results in outputs with opposite phase and active-high states.
Example 19.2. TIMER DTI Example 2
DTIPOL = 1 and DTCINV = 1 results in outputs with equal phase. The primary output will be active-high,
while the complementary will be active-low
Figure 19.24. TIMER Output Polarities
Output generation on the individual DTI outputs can be disabled by configuring TIMER0_DTOGEN.
When output generation on an output is disabled, it will go to and stay in its inactive state.
DTIPOL = 0
DTCINV = 0
DTIPOL = 1
DTCINV = 0
DTIPOL = 0
DTCINV = 1
DTIPOL = 1
DTCINV = 1
Original PWM
TIM0_CDTI0
TIM0_CDTI0
TIM0_CDTI0
TIM0_CDTI0
TIM0_CC0
TIM0_CC0
TIM0_CC0
TIM0_CC0
TIMERn
by a configurable factor between 1 and 1024, which is set in the
...the world's most energy friendly microcontrollers
255
TIMER0
www.energymicro.com
cycles.