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MSP430x11x1
MIXED SIGNAL MICROCONTROLLER
SLAS241C – SEPTEMBER 1999 – REVISED JUNE 2000
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
special function registers
Most interrupt and module enable bits are collected into the lowest address space. Special function register bits
that are not allocated to a functional purpose are not physically present in the device. Simple software access
is provided with this arrangement.
interrupt enable 1 and 2
7654 0
OFIE WDTIE
321
rw-0 rw-0 rw-0
Address
0h
NMIIEACCVIE
rw-0
WDTIE: Watchdog timer enable signal
OFIE: Oscillator fault enable signal
NMIIE: Nonmaskable interrupt enable signal
ACCVIE: Access violation at flash memory
7654 0321
Address
01h
interrupt flag register 1 and 2
7654 0
OFIFG WDTIFG
321
rw-0 rw-1 rw-0
Address
02h NMIIFG
WDTIFG: Set on overflow or security key violation or
Reset on V
CC
power-on or reset condition at RST/NMI-pin
OFIFG: Flag set on oscillator fault
NMIIFG: Set via RST/NMI-pin
7654 0321
Address
03h
Legend rw:
rw-0:
Bit can be read and written.
Bit can be read and written. It is reset by PUC
SFR bit is not present in device.