Effective Date:
PRCN Issue Date:
PCN Type:
Jun 21, 2022
Sep 27, 2022
Datasheet; Errata; Firmware - Secure Element Software Catalog OPN; Product Revision
Description of Change
Silicon Labs is pleased to announce a new revision (rev C) of EFR32FG23 and EFR32ZG23 to resolve CUR_E303 (Active 
Charge Pump Clock Causes High Current). 
In addition to the new revision, the following new parts are being introduced.  
New part numbers:
EFR32FG23B021F512IM40-C
EFR32FG23B021F512IM48-C
The datasheets are being updated to revision 1.1 to add information on the new part numbers. See the datasheet revision 
history for a complete list of changes.
Errata is being updated to revision 0.7 for EFR32FG23 and revision 0.6 for EFR32ZG23 to add IADC_E306 and 
KEYSCAN_E301 and to resolve CUR_E303.
SE FW update to v2.1.7.
2206211261 EFR32FG23-ZG23 New Revision 
C Parts, Datasheet, Errata and SE Firmware 
Upd
Existing Part #          Replacement Part #       DropInCompInd.
EFR32FG23A010F256GM40-B  EFR32FG23A010F256GM40-C  Yes           
EFR32FG23A010F256GM40-BR EFR32FG23A010F256GM40-CR Yes           
EFR32FG23A010F256GM48-B  EFR32FG23A010F256GM48-C  Yes           
EFR32FG23A010F256GM48-BR EFR32FG23A010F256GM48-CR Yes           
EFR32FG23A010F512GM40-B  EFR32FG23A010F512GM40-C  Yes           
EFR32FG23A010F512GM40-BR EFR32FG23A010F512GM40-CR Yes           
EFR32FG23A010F512GM48-B  EFR32FG23A010F512GM48-C  Yes           
EFR32FG23A010F512GM48-BR EFR32FG23A010F512GM48-CR Yes           
EFR32FG23A011F512GM40-B  EFR32FG23A011F512GM40-C  Yes           
EFR32FG23A011F512GM40-BR EFR32FG23A011F512GM40-CR Yes           
EFR32FG23A020F256GM40-B  EFR32FG23A020F256GM40-C  Yes           
EFR32FG23A020F256GM40-BR EFR32FG23A020F256GM40-CR Yes           
EFR32FG23A020F256GM48-B  EFR32FG23A020F256GM48-C  Yes           
EFR32FG23A020F256GM48-BR EFR32FG23A020F256GM48-CR Yes           
EFR32FG23A020F512GM40-B  EFR32FG23A020F512GM40-C  Yes           
EFR32FG23A020F512GM40-BR EFR32FG23A020F512GM40-CR Yes           
Impact on Form, Fit, Function, Quality, Reliability
No change to Form, Fit, Quality or Reliability. Improved Function, fixed CUR_E303.
Product Identification
Reason for Change
The new revision resolves CUR_E303 and contains the updated SE FW v2.1.7.
Note: After the effective date of the PRCN, Silicon Labs will not accept orders for the prior revision.
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Revision Change Notice
#2022-06-21-1261

EFR32FG23A020F512GM48-B  EFR32FG23A020F512GM48-C  Yes           
EFR32FG23A020F512GM48-BR EFR32FG23A020F512GM48-CR Yes           
EFR32FG23A021F512GM40-B  EFR32FG23A021F512GM40-C  Yes           
EFR32FG23A021F512GM40-BR EFR32FG23A021F512GM40-CR Yes           
EFR32FG23B010F128GM40-B  EFR32FG23B010F128GM40-C  Yes           
EFR32FG23B010F128GM40-BR EFR32FG23B010F128GM40-CR Yes           
EFR32FG23B010F512IM40-B  EFR32FG23B010F512IM40-C  Yes           
EFR32FG23B010F512IM40-BR EFR32FG23B010F512IM40-CR Yes           
EFR32FG23B010F512IM48-B  EFR32FG23B010F512IM48-C  Yes           
EFR32FG23B010F512IM48-BR EFR32FG23B010F512IM48-CR Yes           
EFR32FG23B020F128GM40-B  EFR32FG23B020F128GM40-C  Yes           
EFR32FG23B020F128GM40-BR EFR32FG23B020F128GM40-CR Yes           
EFR32FG23B020F512IM40-B  EFR32FG23B020F512IM40-C  Yes           
EFR32FG23B020F512IM40-BR EFR32FG23B020F512IM40-CR Yes           
EFR32FG23B020F512IM48-B  EFR32FG23B020F512IM48-C  Yes           
EFR32FG23B020F512IM48-BR EFR32FG23B020F512IM48-CR Yes           
EFR32ZG23A010F512GM40-B  EFR32ZG23A010F512GM40-C  Yes           
EFR32ZG23A010F512GM40-BR EFR32ZG23A010F512GM40-CR Yes           
EFR32ZG23A010F512GM48-B  EFR32ZG23A010F512GM48-C  Yes           
EFR32ZG23A010F512GM48-BR EFR32ZG23A010F512GM48-CR Yes           
EFR32ZG23A020F512GM40-B  EFR32ZG23A020F512GM40-C  Yes           
EFR32ZG23A020F512GM40-BR EFR32ZG23A020F512GM40-CR Yes           
EFR32ZG23A020F512GM48-B  EFR32ZG23A020F512GM48-C  Yes           
EFR32ZG23A020F512GM48-BR EFR32ZG23A020F512GM48-CR Yes           
EFR32ZG23B010F512IM40-B  EFR32ZG23B010F512IM40-C  Yes           
EFR32ZG23B010F512IM40-BR EFR32ZG23B010F512IM40-CR Yes           
EFR32ZG23B010F512IM48-B  EFR32ZG23B010F512IM48-C  Yes           
EFR32ZG23B010F512IM48-BR EFR32ZG23B010F512IM48-CR Yes           
EFR32ZG23B011F512IM40-B  EFR32ZG23B011F512IM40-C  Yes           
EFR32ZG23B011F512IM40-BR EFR32ZG23B011F512IM40-CR Yes           
EFR32ZG23B020F512IM40-B  EFR32ZG23B020F512IM40-C  Yes           
EFR32ZG23B020F512IM40-BR EFR32ZG23B020F512IM40-CR Yes           
EFR32ZG23B020F512IM48-B  EFR32ZG23B020F512IM48-C  Yes           
EFR32ZG23B020F512IM48-BR EFR32ZG23B020F512IM48-CR Yes           
EFR32ZG23B021F512IM40-B  EFR32ZG23B021F512IM40-C  Yes           
EFR32ZG23B021F512IM40-BR EFR32ZG23B021F512IM40-CR Yes           
Last Date of Unchanged Product:
Sep 27, 2022
Qualification Samples
Available upon request.
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Customer Response
Lack of acknowledgment of the PCN within 30 days constitutes acceptance of the change, Ref. JEDEC-J-STD-046.
To request further data or inquire about this notification, please contact your Silicon Labs sales representative.  A list of Silicon 
Labs sales representatives is available at http://www.silabs.com.
Customers may approve early PCN acceptance by emailing approval, along with PCN # to PCNEarlyAcceptance@silabs.com
Kit Identification
Kits impacted by the above product are listed below.
Orders for the following obsolete kits will no longer be accepted.
Existing Kit #   Replacement Kit # 
NA               NA                
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Revision Change Notice
#2022-06-21-1261