Wdt+ Watchdog Timer; Hardware Multiplier - Texas Instruments MSP430F42 series Instruction Manual

WDT+ watchdog timer

The primary function of the watchdog timer (WDT+) 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.
timer_A3
Timer_A3 is a 16-bit timer/counter with three capture/compare registers. Timer_A3 can support multiple
capture/compares, PWM outputs, and interval timing. Timer_A3 also has extensive interrupt capabilities.
Interrupts may be generated from the counter on overflow conditions and from each of the capture/compare
registers.
Input Pin Number Device Input Signal
48 - P1.5 TACLK
ACLK
SMCLK
48 - P1.5 TACLK
53 - P1.0 TA0
52 - P1.1 TA0
DV
DV
51 - P1.2 TA1
51 - P1.2 TA1
DV
DV
45 - P2.0 TA2
ACLK (internal)
DV
DV
USART0
The MSP430F42x devices have one hardware universal synchronous/asynchronous receive transmit
(USART0) peripheral module that is used for serial data communication. The USART supports synchronous
SPI (3 or 4 pin) and asynchronous UART communication protocols, using double-buffered transmit and receive
channels.

hardware multiplier

The multiplication operation is supported by a dedicated peripheral module. The module performs 16 16,
16 8, 8 16, and 8 8 bit operations. The module is capable of supporting signed and unsigned multiplication
as well as signed and unsigned multiply and accumulate operations. The result of an operation can be accessed
immediately after the operands have been loaded into the peripheral registers. No additional clock cycles are
required.
SD16
The SD16 module integrates three independent 16-bit sigma-delta A/D converters, internal temperature sensor
and built-in voltage reference. Each channel is designed with a fully differential analog input pair and
programmable gain amplifier input stage.
Timer_A3 Signal Connections
Module Input Name
TACLK
ACLK
SMCLK
INCLK
CCI0A
CCI0B
GND
SS
V
CC CC
CCI1A
CCI1B
GND
SS
V
CC CC
CCI2A
CCI2B
GND
SS
V
CC CC
POST OFFICE BOX 655303
MIXED SIGNAL MICROCONTROLLER
SLAS421A − APRIL 2004 − REVISED JUNE 2007
Module Block Module Output Signal
Timer Timer NA NA
CCR0 CCR0 TA0 TA0
CCR1 CCR1 TA1 TA1
CCR2 CCR2 TA2 TA2
•
DALLAS, TEXAS 75265
MSP430F42x
Output Pin Number
53 - P1.0
51 - P1.2
45 - P2.0
13