MSP430FR5989-EP Datasheet, PDF (61/154 Pages) Texas Instruments – Mixed-Signal Microcontroller

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MSP430FR5989-EP
SLASEC9 – APRIL 2017
5.4 Interrupt Vector Table and Signatures
The interrupt vectors, the power-up start address and signatures are in the address range 0FFFFh to
0FF80h. Figure 5-1 summarizes the content of this address range.
Reset Vector
0FFFFh
Interrupt
Vectors
BSL Password
0FFE0h
Reserved
JTAG Password
Signatures
0FF88h
0FF80h
Figure 5-1. Interrupt Vectors, Signatures, and Passwords
The power-up start address or reset vector is located at 0FFFFh to 0FFFEh. It contains the 16-bit address
pointing to the start address of the application program.
The interrupt vectors start at 0FFFDh and extend to lower addresses. Each vector contains the 16-bit
address of the appropriate interrupt-handler instruction sequence. Table 5-4 shows the device-specific
interrupt vector locations.
The vectors programmed into the address range from 0FFFFh to 0FFE0h are used as the BSL password
(if enabled by the corresponding signature).
The signatures are located at 0FF80h and extend to higher addresses. Signatures are evaluated during
device start-up. Table 5-5 shows the device-specific signature locations.
A JTAG password can be programmed starting at address 0FF88h and extending to higher addresses.
The password can extend into the interrupt vector locations using the interrupt vector addresses as
additional bits for the password. The length of the JTAG password depends on the JTAG signature.
See the System Resets, Interrupts, and Operating Modes, System Control Module (SYS) chapter in the
MSP430FR58xx, MSP430FR59xx, MSP430FR68xx, MSP430FR69xx Family User's Guide for details.
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