EFM32TG210F32 Energy Micro, EFM32TG210F32 Datasheet - Page 197

• 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
The IrDA module is enabled by setting IREN. The USART transmitter output and receiver input is then
routed through the IrDA modulator.
The width of the pulses generated by the IrDA modulator is set by configuring IRPW in
USARTn_IRCTRL. Four pulse widths are available, each defined relative to the configured bit period
as listed in Table 15.10 (p. 197) .
Table 15.10. USART IrDA Pulse Widths
By default, no filter is enabled in the IrDA demodulator. A filter can be enabled by setting IRFILT in
USARTn_IRCTRL. When the filter is enabled, an incoming pulse has to last for 4 consecutive clock
cycles to be detected by the IrDA demodulator.
Note that by default, the idle value of the USART data signal is high. This means that the IrDA modulator
generates negative pulses, and the IrDA demodulator expects negative pulses. To make the IrDA module
use RZI signalling, both TXINV and RXINV in USARTn_CTRL must be set.
The IrDA module can also modulate a signal from the PRS system, and transmit a modulated signal to
the PRS system. To use a PRS channel as transmitter source instead of the USART, set IRPRSEN in
USARTn_IRCTRL high. The channel is selected by configuring IRPRSSEL in USARTn_IRCTRL.
IRPW
00
01
10
11
Pulse width OVS=0
1/16
2/16
3/16
4/16
Pulse width OVS=1
1/8
2/8
3/8
N/A
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197
Pulse width OVS=2
1/6
2/6
N/A
N/A
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Pulse width OVS=3
1/4
N/A
N/A
N/A