STM8S208xx/STM8S207xx Errata sheet STM8S performance line revision X device limitations Silicon identification This errata sheet applies to the revision X of the STMicroelectronics STM8S performance line products. The full list of root part numbers is shown in Table 2. The products are identifiable as shown in Table 1: ● by the Revision code marked below the Sales Type on the device package ● by the last three digits of the Internal Sales Type printed on the box label Table 1. Device identification Sales type Revision code(1) marked on device STM8S207xxxx X STM8S208xxxx X 1. Refer to Appendix A: Revision code on device marking for details on how to identify the Revision code on the different packages. Table 2. Device summary Reference Part number STM8S207xx STM8S207MB, STM8S207RB, STM8S207R8, STM8S207R6, STM8S207CB, STM8S207C8, STM8S207S8, STM8S207K6 STM8S208xx STM8S208MB, STM8S208RB December 2008 Rev 1 1/8 www.st.com Contents Errata sheet Contents 1 Product evolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Silicon limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 HSI RC oscillator cannot be switched off in RUN mode . . . . . . . . . . . . . . . 4 2.2 LSI oscillator remains ON during Active Halt mode (MVR ON) when AWU uses HSE/Div as input clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.3 TIM1_CH4 mapped on PC4 and PD7 ports by AFR4 option . . . . . . . . . . . 4 2.4 UART PE flag cannot be cleared during reception of first half of Stop bit . 5 Appendix A Revision code on device marking . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2/8 Errata sheet 1 Product evolution Product evolution This table summarizes the fix status. Table 3. Product evolution summary Section Limitation Section 2.1 HSI RC oscillator cannot be switched off in RUN mode Section 2.2 LSI oscillator remains ON during Active Halt mode (MVR ON) when AWU uses HSE/Div as input clock Section 2.3 TIM1_CH4 mapped on PC4 and PD7 ports by AFR4 option Section 2.4 UART PE flag cannot be cleared during reception of first half of Stop bit Status No fix planned Workaround available 3/8 Silicon limitations Errata sheet 2 Silicon limitations 2.1 HSI RC oscillator cannot be switched off in RUN mode Description The HSI RC oscillator cannot be switched off in Run mode. This causes negligible extra power consumption compared to the total consumption of the MCU in Run mode. Workaround No workaround available. 2.2 LSI oscillator remains ON during Active Halt mode (MVR ON) when AWU uses HSE/Div as input clock Description The LSI RC oscillator is not switched off in Active Halt mode with main voltage regulator (MVR) on, when the AWU uses high speed external clock divided by prescaler (HSE/Div) (clock source option enabled by CKAWUSEL option bit). This causes negligible extra power consumption compared to the total consumption of the MCU in Active Halt mode with main voltage regulator (MVR) on. Workaround No workaround available. 2.3 TIM1_CH4 mapped on PC4 and PD7 ports by AFR4 option Description Timer 1 channel 4 (TIM1_CH4) is available both on pin PC4 and PD7 when the alternate function remapping AFR4 option bit is set. Workaround No workaround available. It is recommended to only use the AFR4 Alternate function remapping option for the 44-pin package where PC4 is not present. 4/8 Errata sheet 2.4 Silicon limitations UART PE flag cannot be cleared during reception of first half of Stop bit Description When the UART is in reception mode and a parity error (PE) occurs, the PE flag is set by hardware. This flag cannot be cleared during the first half of the Stop bit period. If software tries to clear the PE flag at this time, the flag is set again by hardware, generating an unwanted interrrupt if the PIEN bit is set in the UART_CR1 register. Workaround Disable PE interrupts and, after the RXNE bit is set, use polling to manage the PE flag. For example, this could be done in the RXNE interrupt service routine. 5/8 Revision code on device marking Appendix A Errata sheet Revision code on device marking Figure 1 shows the marking compositions for the LQFP80 package. Figure 1. LQFP80 top package view Revision code X STM8S208 6/8 Errata sheet Revision history Revision history Table 4. Document revision history Date Revision 04-Dec-2008 1 Changes Initial revision 7/8 Errata sheet Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. 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