Transcription
MSP430 Memory ProgrammingUser's GuideLiterature Number: SLAU265HFebruary 2009 – Revised April 2010
2SLAU265H – February 2009 – Revised April 2010Copyright 2009–2010, Texas Instruments Incorporated
Contents1234. 9MSP430 Programming Via the Bootstrap Loader . 112.1Introduction . 112.2Standard RESET and BSL Entry Sequence . 122.2.1 MSP430 Devices With Shared JTAG Pins . 122.2.2 MSP430 Flash Devices With Dedicated JTAG Pins . 132.2.3 Devices With USB . 132.3UART Protocol . 132.4USB Protocol . 13ROM-Based Bootstrap Loader Protocol . 153.1Synchronization Sequence . 153.2Commands . 153.2.1 Unprotected Commands . 153.2.2 Password Protected Commands . 153.3Programming Flow . 163.4Data Frame . 173.4.1 Data-Stream Structure . 173.4.2 Checksum . 183.4.3 Example Sequence . 183.4.4 Commands – Detailed Description . 183.5Loadable BSL . 223.6Exiting the BSL . 233.7Password Protection . 233.8Code Protection Fuse . 243.9BSL Internal Settings and Resources . 243.9.1 Chip Identification and BSL Version . 243.9.2 Vectors to Call the BSL Externally . 243.9.3 Initialization Status . 253.9.4 Memory Allocation and Resources . 26Flash-Based Bootstrap Loader Protocol . 274.1BSL Data Packet . 274.2UART Peripheral Interface (PI) . 274.2.1 Wrapper . 274.2.2 Abbreviations . 274.2.3 Messages . 284.2.4 Interface Specific Commands . 284.3USB Peripheral Interface . 284.3.1 Wrapper . 284.3.2 Hardware Requirements . 294.4BSL Core Command Structure . 294.4.1 Abbreviations . 294.4.2 Command Descriptions . 304.5BSL Security . 314.5.1 Protected Commands . 314.5.2 RAM Erase . 31Overview of MSP430 ProgrammingSLAU265H – February 2009 – Revised April 2010Copyright 2009–2010, Texas Instruments IncorporatedContents3
www.ti.com4.64.7567894BSL Core Responses .4.6.1 Abbreviations .4.6.2 BSL Core Messages .4.6.3 BSL Version Number .4.6.4 Example Sequences for UART BSL .BSL Public Functions and Z-Area .4.7.1 Starting the BSL from an external application .4.7.2 Function Description .3232333334343434. 355.1Hardware Description . 355.1.1 Power Supply . 355.1.2 Serial Interface . 365.1.3 Target Connector . 375.1.4 Parts List . 38Differences Between Devices and Bootstrap Loader Versions . 396.15xx/6xx BSL Versions . 396.2Special Consideration for ROM BSL Version 1.10 . 416.3BSL Known issues . 416.4BSL FAQ . 49Bootstrap Loader PCB Layout Suggestion . 51MSP430 Programming Via the JTAG Interface . 558.1Introduction . 558.2Interface and Instructions . 558.2.1 JTAG Interface Signals . 568.2.2 JTAG Access Macros . 588.2.3 Spy-Bi-Wire (SBW) Timing and Control . 608.2.4 JTAG Communication Instructions . 648.3Memory Programming Control Sequences . 708.3.1 Start-Up . 708.3.2 General Device (CPU) Control Functions . 738.3.3 Accessing Non-Flash Memory Locations With JTAG . 828.3.4 Programming the Flash Memory (Using the Onboard Flash Controller) . 868.3.5 Erasing the Flash Memory (Using the Onboard Flash Controller) . 918.3.6 Reading From Flash Memory . 948.3.7 Verifying the Flash Memory . 958.4JTAG Access Protection . 958.4.1 Burning the JTAG Fuse - Function Reference for 1xx/2xx/4xx Families . 958.4.2 Programming the JTAG Lock Key - Function Reference for 5xx Family . 978.4.3 Testing for a Successfully Protected Device . 988.5JTAG Function Prototypes . 988.5.1 Low-Level JTAG Functions . 988.5.2 High-Level JTAG Routines . 1008.6References . 105JTAG Programming Hardware and Software Implementation . 1079.1Implementation History . 1079.2Implementation Overview . 1079.3Software Operation . 1089.4Software Structure . 1099.5Programmer Operation . 1119.6Hardware Setup . 1119.6.1 Host Controller . 1119.6.2 Target Connection . 111Bootstrap Loader HardwareContentsSLAU265H – February 2009 – Revised April 2010Copyright 2009–2010, Texas Instruments Incorporated
www.ti.com9.6.39.6.410Internal MSP430 JTAG Implementation10.110.2AHost Controller/Programmer Power Supply . 113Third Party Support . 113. 115TAP Controller State Machine . 115MSP430 JTAG Restrictions (Non-Compliance With IEEE Std 1149.1) . 115. 117Known Issues . 117Revisions and Errata from Previous Documents . 117Errata and Revision InformationA.1A.2SLAU265H – February 2009 – Revised April 2010Copyright 2009–2010, Texas Instruments IncorporatedContents5
www.ti.comList of Figures2-1.Standard RESET Sequence . 122-2.BSL Entry Sequence at Shared JTAG -1.10-1.6. 12BSL Entry Sequence at Dedicated JTAG Pins . 13Bootstrap Loader Interface Schematic .
MSP430 Programming Via the Bootstrap Loader The MSP430 BSL enables users to communicate with embedded memory in the MSP430 microcontroller during the prototyping phase, final production, and in service. Both the programmable memory (flash memory) and the data memory (RAM) can be modified as required. Do not confuse the bootstrap loader
