SAM E70 / SAM S70 Atmel | SMART ARM-based Flash MCU ERRATA Scope This document contains the known errata found on the following Atmel® | SMART SAM E70 and SAM S70 devices: ATSAME70Q21A-CN-ES2 ATSAMS70Q21A-CN-ES2 ATSAME70Q21A-AN-ES2 ATSAMS70Q21A-AN-ES2 ATSAME70N21A-CN-ES2 ATSAMS70N21A-CFN-ES2 ATSAME70N21A-AN-ES2 ATSAMS70N21A-CN-ES2 ATSAME70J21A-AN-ES2 ATSAMS70N21A-AN-ES2 ATSAMS70J21A-AN-ES2 Errata Topics ̶ ARM® Cortex®-M7 ̶ Backup Mode Power Consumption ̶ Digital-to-Analog Controller (DAC) ̶ Master CAN-FD Controller (MCAN) ̶ Extended DMA Controller (XDMAC) ̶ AHB Peripheral Port (AHBP) ̶ AHB Slave Port (AHBS) ̶ Serial Synchronous Controller (SSC) ̶ Power Management Controller (PMC) Atmel-44027A-ATARM-SAM-E70-S70-Errata_17-Mar-15 1. Errata 1.1 ARM® Cortex®-M7 Issue: All issues related to the ARM r0p1 core are described on the ARM site. Workaround: Refer to ARM documentation: ̶ ̶ 1.2 ARM Processor Cortex-M7 (AT610) and Cortex-M7 with FPU (AT611) Software Developers Errata Notice ARM Embedded Trace Macrocell CoreSight ETM–M7 (TM975) Software Developers Errata Notice Backup Mode Power Consumption Issue: Backup power consumption is higher than expected Power consumption on VDDIO in Backup mode is up to 11 µA without backup SRAM and up to 35 µA with backup SRAM. Resolution: 1.3 Fixed in parts marked -ES3 and in production silicon. Digital-to-Analog Controller (DAC) Issue: Expected performances are not achieved on the full power supply range Applying VDDIO below 2.5V leads to reduced DAC performances. DNL, INL, offset, will be ±65mV, ±35mV and ±30mV, respectively, instead of, ±5mV, ±7mV and ±8mV in the [2.5 : 3.6V] range. Workaround: 2 Apply VDDIO power supply in the range [2.5 : 3.6V]. SAM E70/SAM S70 [ERRATA] Atmel-44027A-ATARM-SAM-E70-S70-Errata_17-Mar-15 1.4 Master CAN-FD Controller (MCAN) Issue: Flexible data rate is not fully supported CAN-FD peripheral does not support the new CRC scheme introduced by the ISO standardization committee. CAN 2.0 operation is not impacted. Workaround: 1.5 None. Extended DMA Controller (XDMAC) Issue: Issue with byte and half-word accesses to TCM If TCM accesses are generated through the AHBS port of the core, only 32-bit accesses are supported. Accesses which are not 32-bit aligned may overwrite bytes at the beginning and at the end of 32-bit words. Workaround: 3 The user must use 32-bit aligned buffers and buffers with size of a multiple of 4 bytes when transferring data to or from the TCM through the AHBS port of the core. SAM E70/SAM S70 [ERRATA] Atmel-44027A-ATARM-SAM-E70-S70-Errata_17-Mar-15 1.6 AHB Peripheral Port (AHBP) Issue: Access with frequency ratio different from 1 and 1/2 may fail Peripheral accesses done through the AHBP with a core/bus ratio of 1/3 and 1/4 may lead to unpredictable results. Workaround: 1.7 The user must use a core/bus frequency ratio of 1 or 1/2. AHB Slave Port (AHBS) Issue: Latency on accesses with frequency ratio different from 1 DMA accesses done through the AHBS to the TCM with a core/bus ratio of 1/2, 1/3 and 1/4 may lead to latency due to one wait state added to the access from the bus to AHBS. Workaround: 1.8 The user must use only the core/bus frequency ratio of 1 to guarantee the length of the access. Serial Synchronous Controller (SSC) Issue: Inverted left/right channels In some cases of overflow, a left/right channel inversion may occur. In this case, the SSC must be re-initialized. Workaround: 1.9 None. Power Management Controller (PMC) Issue: SleepWalking is not working with division by 8 UART and TWIHS clock can be divided to reduce power consumption. If the divider is 8, SleepWalking is not functional. Workaround: 4 None. SAM E70/SAM S70 [ERRATA] Atmel-44027A-ATARM-SAM-E70-S70-Errata_17-Mar-15 2. Revision History Table 2-1. SAM VE70/S70 Errata – Revision History Doc. Rev. 44027A Change 17-Mar-15 First issue SAM E70/SAM S70 [ERRATA] Atmel-44027A-ATARM-SAM-E70-S70-Errata_17-Mar-15 5 ARM Connected Logo XXXXXX Atmel Corporation 1600 Technology Drive, San Jose, CA 95110 USA T: (+1)(408) 441.0311 F: (+1)(408) 436.4200 | www.atmel.com © 2015 Atmel Corporation. / Rev.: Atmel-44027A-ATARM-SAM-E70-S70-Errata_17-Mar-15. Atmel®, Atmel logo and combinations thereof, Enabling Unlimited Possibilities®, and others are registered trademarks or trademarks of Atmel Corporation in U.S. and other countries. ARM®, ARM Connected® logo, and others are the registered trademarks or trademarks of ARM Ltd. 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