MSP430F551X_1 Datasheet, PDF (26/115 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F551x
MSP430F552x
SLAS590D – OCTOBER 2009 – REVISED APRIL 2010
www.ti.com
Watchdog Timer (WDT_A)
The primary function of the watchdog timer (WDT_A) module is to perform a controlled system restart after a
software problem occurs. If the selected time interval expires, a system reset is generated. If the watchdog
function is not needed in an application, the module can be configured as an interval timer and can generate
interrupts at selected time intervals.
System Module (SYS)
The SYS module handles many of the system functions within the device. These include power on reset and
power up clear handling, NMI source selection and management, reset interrupt vector generators, boot strap
loader entry mechanisms, as well as, configuration management (device descriptors). It also includes a data
exchange mechanism via JTAG called a JTAG mailbox that can be used in the application.
Table 11. System Module Interrupt Vector Registers
INTERRUPT VECTOR REGISTER
ADDRESS
019Eh
SYSRSTIV , System Reset
019Ch
SYSSNIV , System NMI
SYSUNIV, User NMI
019Ah
INTERRUPT EVENT
No interrupt pending
Brownout (BOR)
RST/NMI (POR)
PMMSWBOR (BOR)
Wakeup from LPMx.5
Security violation (BOR)
SVSL (POR)
SVSH (POR)
SVML_OVP (POR)
SVMH_OVP (POR)
PMMSWPOR (POR)
WDT timeout (PUC)
WDT password violation (PUC)
KEYV flash password violation (PUC)
FLL unlock (PUC)
Peripheral area fetch (PUC)
PMM password violation (PUC)
Reserved
No interrupt pending
SVMLIFG
SVMHIFG
SVSMLDLYIFG
SVSMHDLYIFG
VMAIFG
JMBINIFG
JMBOUTIFG
SVMLVLRIFG
SVMHVLRIFG
Reserved
No interrupt pending
NMIFG
OFIFG
ACCVIFG
BUSIFG
Reserved
VALUE
00h
02h
04h
06h
08h
0Ah
0Ch
0Eh
10h
12h
14h
16h
18h
1Ah
1Ch
1Eh
20h
22h to 3Eh
00h
02h
04h
06h
08h
0Ah
0Ch
0Eh
10h
12h
14h to 1Eh
00h
02h
04h
06h
08h
0Ah to 1Eh
PRIORITY
Highest
Lowest
Highest
Lowest
Highest
Lowest
26
Submit Documentation Feedback
Copyright © 2009–2010, Texas Instruments Incorporated