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MSP430F5529 데이터시트(PDF) 21 Page - Texas Instruments |
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MSP430F5529 데이터시트(HTML) 21 Page - Texas Instruments |
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21 / 115 page ![]() MSP430F551x MSP430F552x www.ti.com SLAS590D – OCTOBER 2009 – REVISED APRIL 2010 Bootstrap Loader (BSL) The BSL enables users to program the flash memory or RAM using various serial interfaces. Access to the device memory via the BSL is protected by an user-defined password. For complete description of the features of the BSL and its implementation, see the MSP430 Memory Programming User's Guide, literature number SLAU265. USB BSL All devices come pre-programmed with the USB BSL. Usage of the USB BSL requires external access to the six pins shown in Table 5. In addition to these pins, the application must support external components necessary for normal USB operation e.g. proper crystal on XT2IN and XT2OUT, proper decoupling, etc. Table 5. USB BSL Pin Requirements and Functions DEVICE SIGNAL BSL FUNCTION RST/NMI/SBWTDIO Entry sequence signal PU.0/DP USB data terminal DP PU.1/DM USB data terminal DM PUR USB pullup resistor terminal VBUS USB bus power supply VSSU USB ground supply UART BSL A UART BSL is also available that can be programmed by the user into the BSL memory by replacing the pre-programmed, factory supplied, USB BSL. Usage of the UART BSL requires external access to the six pins shown in Table 6. Table 6. UART BSL Pin Requirements and Functions DEVICE SIGNAL BSL FUNCTION RST/NMI/SBWTDIO Entry sequence signal TEST/SBWTCK Entry sequence signal P1.1 Data transmit P1.2 Data receive VCC Power supply VSS Ground supply Copyright © 2009–2010, Texas Instruments Incorporated Submit Documentation Feedback 21 |
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