PRCN #1508071: EFM8UB1x Revision C

Revision Change Notice #1508071
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PCN Date: 8/7/2015
Effective Date: 9/11/2015
Title: EFM8UB1x Revision C
Originator: Kafai Leung
Phone: +1-512-5325232
Dept: Marketing
Customer Contact: Kathy Haggar
Phone: +1-512-532-5261
Dept: Sales
PCN Type:
☒ Datasheet
☒ Product Revision
PCN Details
Description of Change:
Silicon Labs is pleased to announce revision C of the EFM8UB1x devices and revision 1.0 of the
corresponding datasheet for these products.
For customers using Revision B the change to Revision C eliminates a potential issue in USB device
missing a token from the host and not responding to a transaction. This revision allows USB Low
Energy Mode settings to be used with any power-saving options.
Revision C resolves the momentary current spike upon entering Shutdown mode.
In addition, for customers using Revision B the change to Revision C eliminates a potential issue
with the Timer 3/4 32-bit counter not switching to the low frequency oscillator (LFOSC0) after
entering Suspend mode if the system clock divider is set to a value of divide-by-4 or greater. This
revision allows system clock divider to be at any value when entering Suspend mode.
Datasheet revision 1.0 updates the orderable part number to revision C along with other spec table
edits in Table 4.1. Port I/O spec in Figure 4.6 and Figure 4.7 together with Table 4.13.
After the effective date of this PCN, Silicon Labs reserves the right to deliver EFM8UB1xFxG-C
(Revision C) for customers ordering EFM8UB1xFxG-B (Revision B).
Reason for Change:
EFM8UB1x Revision C release
EFM8UB1x Datasheet revision 1.0 release
W7206F5 Product Revision Notice Form rev E
The information contained in this document is PROPRIETARY to Silicon Laboratories, Inc. and shall not be reproduced or used in
part or whole without Silicon Laboratories’ written consent. The document is uncontrolled if printed or electronically saved. Pg 5
Revision Change Notice #1508071
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Impact on Form, Fit, Function, Quality, Reliability:
There is no impact to form, fit, quality or reliability.
The following functions are impacted:
- The reset value of REVID SFR will read 0x03 for revision C instead of 0x02 for revision B or
0x01 for revision A.
- Behavior with USB Low Energy mode has been addressed.
- Behavior with momentary current spike upon entering Shutdown mode has been addressed.
- Behavior with Timer 3/4 at system when system clock divider value of divide-by-4 or
greater has been addressed.
Product Identification:
Existing Part Number
Replacement Part Number
EFM8UB10F8G-B-QFN20
EFM8UB10F8G-B-QFN20R
EFM8UB10F16G-B-QFN28
EFM8UB10F16G-B-QFN28R
EFM8UB10F16G-B-QFN20
EFM8UB10F16G-B-QFN20R
EFM8UB11F16G-B-QSOP24
EFM8UB11F16G-B-QSOP24R
EFM8UB10F8G-C-QFN20
EFM8UB10F8G-C-QFN20R
EFM8UB10F16G-C-QFN28
EFM8UB10F16G-C-QFN28R
EFM8UB10F16G-C-QFN20
EFM8UB10F16G-C-QFN20R
EFM8UB11F16G-C-QSOP24
EFM8UB11F16G-C-QSOP24R
Drop in Compatible Indicator
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Note: The part numbers above include tape and reel variants which are denoted with an “R” at the
end of the orderable part number.
Last Date of Unchanged Product: 9/11/2015
Qualification Samples:
Samples are available now. Please contact your Silicon Labs sales representative to order samples.
A list of Silicon Labs sales representatives is available at www.silabs.com.
W7206F5 Product Revision Notice Form rev E
The information contained in this document is PROPRIETARY to Silicon Laboratories, Inc. and shall not be reproduced or used in
part or whole without Silicon Laboratories’ written consent. The document is uncontrolled if printed or electronically saved. Pg 6
Revision Change Notice #1508071
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Specific conditions of acceptance of this change will be considered on a case by case basis if
written notice is submitted within 30 days of this notice. To request further data or inquire
about this notification, please contact your local Silicon Labs sales representative. A list of
Silicon Labs sales representatives is available at www.silabs.com.
In some cases rejection of a change notice may impact Silicon Labs product pricing, delivery,
quality, or reliability.
Customer Early Acceptance Sign Off:
Customers may approve early PCN acceptance by completing the information below:
Early Acceptance:
Date:
Name:
Company:
Email your early Acceptance approval to: [email protected]
Qualification Data:
See below.
W7206F5 Product Revision Notice Form rev E
The information contained in this document is PROPRIETARY to Silicon Laboratories, Inc. and shall not be reproduced or used in
part or whole without Silicon Laboratories’ written consent. The document is uncontrolled if printed or electronically saved. Pg 7
Revision Change Notice #1508071
____________________________________________________________________________________________________
W7206F5 Product Revision Notice Form rev E
The information contained in this document is PROPRIETARY to Silicon Laboratories, Inc. and shall not be reproduced or used in
part or whole without Silicon Laboratories’ written consent. The document is uncontrolled if printed or electronically saved. Pg 8
Revision Change Notice #1508071
____________________________________________________________________________________________________
W7206F5 Product Revision Notice Form rev E
The information contained in this document is PROPRIETARY to Silicon Laboratories, Inc. and shall not be reproduced or used in
part or whole without Silicon Laboratories’ written consent. The document is uncontrolled if printed or electronically saved. Pg 9
Revision Change Notice #1508071
____________________________________________________________________________________________________
W7206F5 Product Revision Notice Form rev E
The information contained in this document is PROPRIETARY to Silicon Laboratories, Inc. and shall not be reproduced or used in
part or whole without Silicon Laboratories’ written consent. The document is uncontrolled if printed or electronically saved. Pg
10