EFM32TG210F32 Energy Micro, EFM32TG210F32 Datasheet - Page 330

• 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

21.3.14.4 LESENSE decoder 2
2010-12-21 - d0034_Rev0.90
1. Configure the channels to be used, be sure to set DECODE in CHx_EVAL.
2. Set PRSCNT to enable generation of count waveforms on PRS. Also configure a PCNT to listen to
3. Configure the following in STx_TCONFA and STx_TCONFB:
4. To initialize the decoder, run one scan, and read the present sensor status from SENSORSTATE.
5. Write to START in CMD to start scanning of sensors and decoding.
The example below illustrates how the LESENSE decoder can be used to implement the state machine
seen in Figure 21.14 (p. 330) .
Figure 21.14. FSM example 2
1. Configure STx_TCONFA and STx_TCONFB as described in Table 21.4 (p. 331) .
1XXX
the PRS channels and count accordingly.
a. Set MASK = 0b1000 in STx_TCONFA and STx_TCONFB for all used states. This enables three
b. Configure the remaining bit fields in STx_TCONFA and STx_TCONFB as described in
Then write the index of this state to DECSTATE.
6
0010
0010
sensors to be evaluated by the decoder.
Table 21.3 (p. 330) .
Table 21.3. LESENSE decoder configuration
Register TCONFA_NEXTSTATE
ST0
ST1
ST2
ST3
ST4
ST5
ST6
ST7
0011
0000
0
4
1XXX
0000
1
2
3
4
5
6
7
0
0011
0001
0001
2
8
1XXX
1XXX
TCONFA_COMP TCONFA_PRSACT TCONFB_NEXTSTATE
0b001
0b011
0b010
0b110
0b111
0b101
0b100
0b000
State Index
UP
UP
UP
UP
UP
UP
UP
UP
...the world's most energy friendly microcontrollers
Sensor value
330
7
0
1
2
3
4
5
6
TCONFB_COMP TCONFB_PRSACT
0b100
0b000
0b001
0b011
0b010
0b110
0b111
0b101
www.energymicro.com
DOWN
DOWN
DOWN
DOWN
DOWN
DOWN
DOWN
DOWN