Texas Instruments MSP430x4xx - Manual (Page 206)

Basic Timer1 Introduction
11-6 Basic Timer1
11.3 Basic Timer1 Registers
The watchdog timer module registers are listed in Table 11−1.
Table 11−1. Basic Timer1 Registers
Register Short Form Register Type Address Initial State
Basic Timer1 Control BTCTL Read/write 040h Unchanged
Basic Timer1 Counter 1 BTCNT1 Read/write 046h Unchanged
Basic Timer1 Counter 2 BTCNT2 Read/write 047h Unchanged
SFR interrupt flag register 2 IFG2 Read/write 001h Reset with PUC
SFR interrupt enable register 2 IE2 Read/write 003h Reset with PUC
Note: The Basic Timer1 registers should be configured at power-up. There is no initial state for BTCTL, BTCNT1, or BTCNT2