Freescale Semiconductor Errata (or Chip Errata) MM908E626ER Rev 1.0, 12/2005 Document order number: MM908E626, Silicon Revision A Errata Introduction This errata sheet applies to the following device: • MM908E626AVDWB Device Revision Identification The device revision is indicated by a 1-character code after the device code. For instance the “A” in the “MM908E626AVDWB” indicates revision A. All standard devices are marked with a device identification and build information code. Device Build Information / Date Code Device markings indicate build information containing the week and year of manufacture. The date is coded with the last four characters of the nine character build information code (e.g. “CTKAH0429”). The date is coded as four numerical digits where the first two digits indicate the year and the last two digits indicate the week. For instance, the date code “0429” indicates the 29th week of the year 2004. Device Part Number Prefixes Some device samples are marked with a PM prefix. A PM prefix indicates a prototype device which has undergone basic testing only. After full characterization and qualification, devices will be marked with the MM prefix. 908EY16 MICROPROCESSOR, 2L31N/3L31N MASK ERRATA Description The MM908E626AVDWB device contains both Analog and the 908EY16 mask 3L31N is equivalent to 2L31N. Please refer to the 68HC908EY16 Product Summary Page for the latest Erratas available. • • LIN Break Delimiter recognition - SE91-LIN_Break Internal Clock Generator Stability Bit Not Set - SE92-ICG © Freescale Semiconductor, Inc., 2005. All rights reserved. ANALOG, L90B8 MASK ERRATA - LIN DOMINANT ISSUE ANALOG, L90B8 MASK ERRATA - LIN DOMINANT ISSUE The LIN Physical Layer Specification which is part of the LIN Specification Package 2.0 defines the VSUP supply voltage range between 7V and 18V (VBAT range 8V to 18V). On this device, the LIN bus output can get stuck in dominant state if both conditions are present: 1. 2. The supply voltage VSUP is below 5.5V and above 4.0V (5.5V > VSUP > 4.0V). The device is in Normal Mode and the transceiver is forcing the LIN to dominant state (TXD=0V). If VSUP drops further below 4.0V (Low-Voltage Reset Threshold typical value), the device will reset and the LIN bus goes in recessive state or if the VSUP is increasing above 5.5V the LIN bus goes also in recessive state (Normal Operation). Work-Around Avoid Stuck Condition To avoid the transceiver to transmit data in the critical VSUP area (5.5V to 4.0V), the Low-Voltage Interrupt or the on-chip voltage measurement can be used to detect the critical VSUP area and to disable (by software) the transmission. To re-enable the transmission, the Low-Voltage Flag or the on-chip voltage measurement can be used to detect that the supply voltage is back high enough. Remove Stuck Condition To avoid having the stuck condition present for a longer period of time, it’s possible to detect the dominant state by monitoring the RXD signal. The stuck in dominant state can be removed by disabling the LIN physical layer (LIN P/L). The LIN P/L is disabled by clearing the PSON bit in the system control register SYSCTL (SPI register), this is also the case if device enters STOP mode. MM908E626ER 2 Freescale Semiconductor How to Reach Us: Home Page: www.freescale.com E-mail: [email protected] USA/Europe or Locations Not Listed: Freescale Semiconductor Technical Information Center, CH370 1300 N. Alma School Road Chandler, Arizona 85224 +1-800-521-6274 or +1-480-768-2130 [email protected] Europe, Middle East, and Africa: Freescale Halbleiter Deutschland GmbH Technical Information Center Schatzbogen 7 81829 Muenchen, Germany +44 1296 380 456 (English) +46 8 52200080 (English) +49 89 92103 559 (German) +33 1 69 35 48 48 (French) [email protected] Japan: Freescale Semiconductor Japan Ltd. Headquarters ARCO Tower 15F 1-8-1, Shimo-Meguro, Meguro-ku, Tokyo 153-0064 Japan 0120 191014 or +81 3 5437 9125 [email protected] Asia/Pacific: Freescale Semiconductor Hong Kong Ltd. Technical Information Center 2 Dai King Street Tai Po Industrial Estate Tai Po, N.T., Hong Kong +800 2666 8080 [email protected] For Literature Requests Only: Freescale Semiconductor Literature Distribution Center P.O. Box 5405 Denver, Colorado 80217 1-800-441-2447 or 303-675-2140 Fax: 303-675-2150 [email protected] MM908E626ER Rev 1.0 12/2005 RoHS-compliant and/or Pb-free versions of Freescale products have the functionality and electrical characteristics of their non-RoHS-compliant and/or non-Pb-free counterparts. For further information, see http://www.freescale.com or contact your Freescale sales representative. For information on Freescale’s Environmental Products program, go to http://www.freescale.com/epp. Information in this document is provided solely to enable system and software implementers to use Freescale Semiconductor products. There are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits or integrated circuits based on the information in this document. Freescale Semiconductor reserves the right to make changes without further notice to any products herein. Freescale Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Freescale Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters that may be provided in Freescale Semiconductor data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”, must be validated for each customer application by customer’s technical experts. Freescale Semiconductor does not convey any license under its patent rights nor the rights of others. Freescale Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Freescale Semiconductor product could create a situation where personal injury or death may occur. Should Buyer purchase or use Freescale Semiconductor products for any such unintended or unauthorized application, Buyer shall indemnify and hold Freescale Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Freescale Semiconductor was negligent regarding the design or manufacture of the part. Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © Freescale Semiconductor, Inc., 2005. All rights reserved.