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MSP430F663x
SLAS566 – OCTOBER 2009
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programmable output levels to provide for power optimization. The PMM also includes supply voltage supervisor
(SVS) and supply voltage monitoring (SVM) circuitry, as well as brownout protection. The brownout circuit is
implemented to provide the proper internal reset signal to the device during power-on and power-off. The
SVS/SVM circuitry detects if the supply voltage drops below a user-selectable level and supports both supply
voltage supervision (the device is automatically reset) and supply voltage monitoring (SVM, the device is not
automatically reset). SVS and SVM circuitry is available on the primary supply and core supply.
Hardware Multiplier
The multiplication operation is supported by a dedicated peripheral module. The module performs operations with
32-bit, 24-bit, 16-bit, and 8-bit operands. The module is capable of supporting signed and unsigned multiplication
as well as signed and unsigned multiply and accumulate operations.
Real-Time Clock (RTC_B)
The RTC_B module can be configured for real-time clock (RTC) and calendar mode providing seconds, minutes,
hours, day of week, day of month, month, and year. Calendar mode integrates an internal calendar which
compensates for months with less than 31 days and includes leap year correction. The RTC_B also supports
flexible alarm functions and offset-calibration hardware. The implementation on this device supports operation in
LPM5 mode and operation from a backup supply.
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 9. System Module Interrupt Vector Registers
INTERRUPT VECTOR
INTERRUPT EVENT
WORD ADDRESS
OFFSET
PRIORITY
REGISTER
No interrupt pending
00h
Brownout (BOR)
02h
Highest
RST/NMI (BOR)
04h
DoBOR (BOR)
06h
LPM5 wakeup (BOR)
08h
Security violation (BOR)
0Ah
SVSL (POR)
0Ch
SVSH (POR)
0Eh
SVML_OVP (POR)
10h
SYSRSTIV , System Reset
SVMH_OVP (POR)
019Eh
12h
DoPOR (POR)
14h
WDT timeout (PUC)
16h
WDT key violation (PUC)
18h
KEYV flash key violation (PUC)
1Ah
FLL unlock (PUC)
1Ch
Peripheral area fetch (PUC)
1Eh
PMM key violation (PUC)
20h
EDI Parity Error (PUC)
22h
Reserved
24h to 3Eh
Lowest
22
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