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EFM32HG321 Errata History
F64/F32
Preliminary
This document describes known errata for all revisions of EFM32HG321 devices.
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1 Errata History
1.1 Errata Overview
Table 1.1 (p. 2) shows which erratum is applicable for each revision. The device datasheet explains how to identify chip revision, either from package
marking or electronically.
In addition to the errata noted below, the errata for the ARM Cortex-M0+ r0p1 (www.arm.com) also applies to all revisions of this device.
Table 1.1. Errata Overview
Erratum ID
Rev. A
EMU_E108
X
GPIO_E102
X
IDAC_E101
X
PCNT_E102
X
PKG_E101
X
USB_E111
X
USB_E112
X
1.2 EFM32HG321 Errata Descriptions
Table 1.2. EFM32HG321 Errata Descriptions
ID
Title/Problem
Effect
Fix/Workaround
EMU_E108
High Current Consumption on EM4
Entry
A higher than expected current consumption will be experienced when entering EM4 if the register at address
0x400C80E4 is not cleared.
Clear the register at address 0x400C80E4 before entering
EM4. If the EM4 sequence is aborted, this register needs to
be restored to its original value.
GPIO_E102
Strong Pulldown on PC4 in EM4 and In EM4 and during reset, the GPIO-pin PC4 has a strong
During Reset
pull-down. If a high input is connected to this pin or the GPIO
is driven high in EM4 by setting EM4RET in GPIO_CTRL, it
will draw considerable current.
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Do not use PC4 as EM4 wakeup-pin. Make sure to disable
output to this pin before entering EM4. Do not drive this pin
high externally in EM4.
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ID
Title/Problem
Effect
Fix/Workaround
Due to an undefined shut-down state of the IDAC, powered
devices that does not use the IDAC continually might experience some degradation in the current output over the lifetime
of the device. The degradation is very small when the device
is used at room temperatures but the output current will fall
well outside specs if the device is exposed to higher temperatures for longer periods of time.
If the IDAC output current is crucial to the application, the
IDAC should never be completely disabled while the device
is powered. Leaving the IDAC enabled in the lowest setting
with duty-cycling enabled consumes 50 nA extra current and
eliminates the problem.
The GPIO-pin PC4 has a strong pulldown in EM4 and during reset.
IDAC_E101
IDAC output current degradation
The current output of the IDAC might
degrade over time.
PCNT_E102
PCNT Pulse Width Filtering does
not work
The PCNT Pulse Width Filter does not work as intended.
Do not use the pulse width filter, i.e. ensure FILT=0 in
PCNTn_CTRL.
PKG_E101
Device package marking error
In some instances, the device identification marked on the
package on line 2 contains an "E" instead of "64" for the flash
size field. In addition, the product revision letter ("A") may appear erroneously at the end of line 2 in addition to the end of
line 4. For example, a line 2 correct mark is: "HG322F64G".
An incorrect line 2 mark is: "HG322FEG A".
This is corrected for all packages with date code 1519 and
later.
Entering EM2 when both the system clock (HFCLK) and the
USB core clock (USBCCLK) is running on USHFRCO will result in a lock-up.
Use either HFRCO or HFXO for the system clock (HFCLK) if
EM2 is employed in USB applications.
In rare cases with high data throughput, a transmission can
fail when this mode is enabled.
Use the GATED mode of LEMOSCCTRL for the best energy
efficiency. The NONE mode can be used to disable energy
savings.
Some packages may contain an incorrect top mark.
USB_E111
Using EM2 with system running on
USHFRCO
Running the system on USHFRCO
will not work with EM2 in USB applications.
USB_E112
SUSPEND in LEMOSCCTRL
Do not use the SUSPEND mode of
LEMOSCCTRL in USB_CTRL.
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2 Revision History
2.1 Revision 0.92
May 11th, 2015
Added PKG_E101.
2.2 Revision 0.91
May 1st, 2015
Added USB_E112.
2.3 Revision 0.90
March 16th, 2015
Added USB_E111.
2.4 Revision 0.01
November 20th, 2014
Initial preliminary release.
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A Disclaimer and Trademarks
A.1 Disclaimer
Silicon Laboratories intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system
and software implementers using or intending to use the Silicon Laboratories products. Characterization data, available modules and peripherals, memory
sizes and memory addresses refer to each specific device, and "Typical" parameters provided can and do vary in different applications. Application examples
described herein are for illustrative purposes only. Silicon Laboratories reserves the right to make changes without further notice and limitation to product
information, specifications, and descriptions herein, and does not give warranties as to the accuracy or completeness of the included information. Silicon
Laboratories shall have no liability for the consequences of use of the information supplied herein. This document does not imply or express copyright
licenses granted hereunder to design or fabricate any integrated circuits. The products must not be used within any Life Support System without the specific
written consent of Silicon Laboratories. A "Life Support System" is any product or system intended to support or sustain life and/or health, which, if it fails,
can be reasonably expected to result in significant personal injury or death. Silicon Laboratories products are generally not intended for military applications.
Silicon Laboratories products shall under no circumstances be used in weapons of mass destruction including (but not limited to) nuclear, biological or
chemical weapons, or missiles capable of delivering such weapons.
A.2 Trademark Information
Silicon Laboratories Inc., Silicon Laboratories, Silicon Labs, SiLabs and the Silicon Labs logo, CMEMS®, EFM, EFM32, EFR, Energy Micro, Energy Micro
logo and combinations thereof, "the world’s most energy friendly microcontrollers", Ember®, EZLink®, EZMac®, EZRadio®, EZRadioPRO®, DSPLL®,
ISOmodem®, Precision32®, ProSLIC®, SiPHY®, USBXpress® and others are trademarks or registered trademarks of Silicon Laboratories Inc. ARM,
CORTEX, Cortex-M3 and THUMB are trademarks or registered trademarks of ARM Holdings. Keil is a registered trademark of ARM Limited. All other
products or brand names mentioned herein are trademarks of their respective holders.
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B Contact Information
Silicon Laboratories Inc.
400 West Cesar Chavez
Austin, TX 78701
Please visit the Silicon Labs Technical Support web page:
http://www.silabs.com/support/pages/contacttechnicalsupport.aspx
and register to submit a technical support request.
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Table of Contents
1. Errata History .............................................................................................................................................................................................................................
1.1. Errata Overview ................................................................................................................................................................................................................
1.2. EFM32HG321 Errata Descriptions .......................................................................................................................................................................................
2. Revision History ..........................................................................................................................................................................................................................
2.1. Revision 0.92 ...................................................................................................................................................................................................................
2.2. Revision 0.91 ...................................................................................................................................................................................................................
2.3. Revision 0.90 ...................................................................................................................................................................................................................
2.4. Revision 0.01 ...................................................................................................................................................................................................................
A. Disclaimer and Trademarks ..........................................................................................................................................................................................................
A.1. Disclaimer .......................................................................................................................................................................................................................
A.2. Trademark Information .......................................................................................................................................................................................................
B. Contact Information .....................................................................................................................................................................................................................
B.1. .....................................................................................................................................................................................................................................
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2
2
2
4
4
4
4
4
5
5
5
6
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List of Tables
1.1. Errata Overview ........................................................................................................................................................................................................................ 2
1.2. EFM32HG321 Errata Descriptions ............................................................................................................................................................................................... 2
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