EFM32TG210F32 Energy Micro, EFM32TG210F32 Datasheet - Page 433

• 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

26.3.2.8 Three Opamp Differential Amplifier
2010-12-21 - d0034_Rev0.90
input by configuring the OPA1POSSEL bitfield in DACn_OPA1MUX. The OPA1 feedback path must be
configured to unity gain by setting the OPA1NEGSEL bitfield to UG in DACn_OPA1MUX. In addition,
the OPA1RESINMUX bitfield must be set to DISABLED. The OPA1OUT must be connected to OPA2
by setting NEXTOUT in DACn_OPA1MUX, and OPA2RESINMUX to OPA1INP. The positive input on
OPA2 can be set by configuring OPA2POSSEL. The OPA2 output can be configured by configuring the
OUTPEN and OUTMODE bitfield.
Figure 26.8. Two Op-amp Differential Amplifier Overview
Table 26.7. Two Opamp Differential Amplifier Configuration
This mode enables the three opamps to be internally configured to form a three opamp differential
amplifier as shown in Figure 26.9 (p. 433) . Both OPA0 and OPA1 can be configured in the same
unity gain mode. For both OPA0/OPA1 the positive input can be connected to any input by configuring
the OPA0POSSEL/OPA1POSSEL bitfield. The OPA0/OPA1 feedback path must be configured to unity
gain by setting the OPA0NEGSEL/OPA1NEGSEL bitfield to UG. In addition the OPA0RESINMUX/
OPA1RESINMUX bitfields must be set to DISABLED. The OPA1 output must be connected to
OPA2 by setting the NEXTOUT bitfield in DACn_OPA1MUX and OPA2RESINMUX to OPA1INP in
DACn_OPA2MUX. In addition the OPA2POSSEL must be set to 0PATAP. The OPA2 output can be
configured by configuring the OUTPEN and OUTMODE bitfield.
Figure 26.9. Three Op-amp Differential Amplifier Overview
OPA
OPA1
OPA1
OPA1
OPA1
OPA2
OPA2
OPA2
V2
V1
V1
V2
OPA1
+
-
OPA1
+
OPA0
-
+
-
R1
R1
R1
OPA bitfields
POSSEL
NEGSEL
RESINMUX
OUTPEN
POSSEL
NEGSEL
RESINMUX
OPA2
+
-
R2
OPA2
+
-
R2
...the world's most energy friendly microcontrollers
R2
433
VDIFF= (V2-V1)R2/R1
VOUT= (V2-V1)R2/R1
VOUT
OPA Configuration
POSPAD1, DAC1
UG
DISABLE
NEXTOUT
POSPAD1
OPATAP
OPA1INP
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