EFM32 Wonder Gecko

EFM32WG Errata

This document contains information on the errata of EFM32WG. The latest available revision of this device is revision A.

For errata on older revisions, please refer to the errata history section for the device. The device revision is typically the first letter on

the line immediately under the part number on the package marking. This is typically the second or third line.

Errata effective date: April 10th, 2017.

silabs.com | Building a more connected world. Rev. 1.20

1. Active Errata Summary

These tables lists all known errata for the EFM32WG and all unresolved errata in revision A of the EFM32WG.

Table 1.1. Errata History Overview

Designator Title/Problem Exists on Re-

vision:

BU_E105 LFXO Missing Cycles During IOVDD Ramping X

CMU_E114 Device Not Waking Up From EM2 When Using Prescaled Non-HFRCO Oscillator as

HFCLK

DAC_E109 DAC Output Drift Over Lifetime X

EMU_E107 Interrupts During EM2 Entry X

EMU_E110 Potential Hard Fault when Exiting EM2 X

PCNT_E102 PCNT Pulse Width Filtering Does Not Work X

RMU_E101 POR Calibration Initialization Issue X

TIMER_E103 Capture/Compare Output is Unreliable with RSSCOIST Enabled X

USB_E103 HNP Sequence Fails if A-Device Connects After 3.4 ms X

USB_E104 USB A-Device Delays the HNP Switch Back Process X

USB_E105 B-Device as Host Driving K-J Pairs During Reset X

USB_E109 Missing USB_GINTSTS.SESSREQINT Interrupt with USB_PCGCCTL.STOPPCLK =

USB_E110 Unexpected USB_HCx_INT.CHHLTD Interrupt X

Table 1.2. Active Errata Status Summary

Errata # Designator Title/Problem Workaround

Exists

Affected

Revision

Resolution

1 BU_E105 LFXO Missing Cycles During IOVDD Ramping Yes A —

2 CMU_E114 Device Not Waking Up From EM2 When Using Pre-

scaled Non-HFRCO Oscillator as HFCLK

Yes A —

3 DAC_E109 DAC Output Drift Over Lifetime Yes A —

4 EMU_E107 Interrupts During EM2 Entry Yes A —

5 EMU_E110 Potential Hard Fault when Exiting EM2 Yes A A, targeted for Q4

2017

6 PCNT_E102 PCNT Pulse Width Filtering Does Not Work No A —

7 RMU_E101 POR Calibration Initialization Issue Yes A A devices (date

code ≥ 1539 and

PROD_REV ≥

0x96), B

8 TIMER_E103 Capture/Compare Output is Unreliable with RSSCO-

IST Enabled

No A —

EFM32WG Errata

Active Errata Summary

silabs.com | Building a more connected world. Rev. 1.20 | 1