SLAS455D datasheet(10/67 Pages) TI2

10 / 67 page

MSP430F42x0

MIXED SIGNAL MICROCONTROLLER

SLAS455D − MARCH 2005 − REVISED APRIL 2007

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

special function registers

The MSP430 special function registers(SFR) are located in the lowest address space, and are organized as

byte mode registers. SFRs should be accessed with byte instructions.

interrupt enable registers 1 and 2

OFIE

WDTIE

rw–0

Address

ACCVIE

NMIIE

rw–0

WDTIE:

Watchdog-timer interrupt enable. Inactive if watchdog mode is selected.

Active if watchdog timer is configured as a general-purpose timer.

OFIE:

Oscillator-fault-interrupt enable

NMIIE:

Nonmaskable-interrupt enable

ACCVIE:

Flash access violation interrupt enable

Address

01h

rw–0

BTIE

BTIE:

Basic timer interrupt enable

interrupt flag registers 1 and 2

OFIFG

WDTIFG

rw–0

rw–1

rw–(0)

Address

02h

NMIIFG

WDTIFG:

Set on watchdog timer overflow (in watchdog mode) or security key violation

Reset on VCC power-on or a reset condition at the RST/NMI pin in reset mode

OFIFG:

Flag set on oscillator fault

NMIIFG:

Set via RST/NMI pin

Address

03h

BTIFG

rw–0

BTIFG:

Basic timer flag

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