EFM32WG840F128 Energy Micro, EFM32WG840F128 Datasheet - Page 64

• Manufacturer Part Number: EFM32WG840F128
• Description: ARM Microcontrollers - MCU 128kb flash 32kb RAM
• Manufacturer: Energy Micro

Specifications of EFM32WG840F128

• Rohs: yes
• Core: ARM Cortex M4F
• Processor Series: EFM32WG840
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 48 MHz
• Program Memory Size: 128 KB
• Data Ram Size: 32 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 1.85 V to 3.8 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: QFN-64
• Mounting Style: SMD/SMT

Preliminary
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List of Figures
2.1. Block Diagram ....................................................................................................................................... 3
2.2. EFM32WG840 Memory Map with largest RAM and Flash sizes ....................................................................... 9
3.1. Typical Low-Level Output Current, 2V Supply Voltage .................................................................................. 16
3.2. Typical High-Level Output Current, 2V Supply Voltage ................................................................................. 17
3.3. Typical Low-Level Output Current, 3V Supply Voltage .................................................................................. 18
3.4. Typical High-Level Output Current, 3V Supply Voltage ................................................................................. 19
3.5. Typical Low-Level Output Current, 3.8V Supply Voltage ............................................................................... 20
3.6. Typical High-Level Output Current, 3.8V Supply Voltage ............................................................................... 21
3.7. Minimum Load Capacitance (C
) Requirement For Safe Crystal Startup ..................................................... 22
LFXOL
3.8. Calibrated LFRCO Frequency vs Temperature and Supply Voltage ................................................................ 24
3.9. Calibrated HFRCO 11 MHz Band Frequency vs Temperature and Supply Voltage ............................................ 25
3.10. Calibrated HFRCO 14 MHz Band Frequency vs Temperature and Supply Voltage ........................................... 25
3.11. Calibrated HFRCO 21 MHz Band Frequency vs Temperature and Supply Voltage ........................................... 25
3.12. Calibrated HFRCO 28 MHz Band Frequency vs Temperature and Supply Voltage ........................................... 26
3.13. Integral Non-Linearity (INL) ................................................................................................................... 30
3.14. Differential Non-Linearity (DNL) .............................................................................................................. 31
3.15. ADC Frequency Spectrum, Vdd = 3V, Temp = 25° ................................................................................... 32
3.16. ADC Integral Linearity Error vs Code, Vdd = 3V, Temp = 25° ..................................................................... 33
3.17. ADC Differential Linearity Error vs Code, Vdd = 3V, Temp = 25° ................................................................. 34
3.18. ADC Absolute Offset, Common Mode = Vdd /2 ........................................................................................ 35
3.19. ADC Dynamic Performance vs Temperature for all ADC References, Vdd = 3V .............................................. 35
3.20. ADC Temperature sensor readout ......................................................................................................... 36
3.21. OPAMP Common Mode Rejection Ratio ................................................................................................. 39
3.22. OPAMP Positive Power Supply Rejection Ratio ........................................................................................ 39
3.23. OPAMP Negative Power Supply Rejection Ratio ...................................................................................... 40
3.24. OPAMP Voltage Noise Spectral Density (Unity Gain) V
=1V ..................................................................... 40
out
3.25. OPAMP Voltage Noise Spectral Density (Non-Unity Gain) .......................................................................... 40
3.26. Typical ACMP Characteristics ............................................................................................................... 42
4.1. EFM32WG840 Pinout (top view, not to scale) ............................................................................................. 46
4.2. Opamp Pinout ...................................................................................................................................... 54
4.3. QFN64 ................................................................................................................................................ 55
5.1. QFN64 PCB Land Pattern ...................................................................................................................... 56
5.2. QFN64 PCB Solder Mask ....................................................................................................................... 57
5.3. QFN64 PCB Stencil Design .................................................................................................................... 58
6.1. Example Chip Marking ........................................................................................................................... 59
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2012-09-11 - EFM32WG840FXX - d0195_Rev1.00
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