MSP430F423AIPM datasheet(13/45 Pages) TI

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MSP430F42xA

MIXED SIGNAL MICROCONTROLLER

SLAS587 -- FEBRUARY 2008

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

watchdog timer (WDT+)

The primary function of the 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.

TIMER_A3 SIGNAL CONNECTIONS

INPUT PIN

NUMBER

DEVICE INPUT

SIGNAL

MODULE INPUT

NAME

MODULE BLOCK

MODULE OUTPUT

SIGNAL

OUTPUT PIN

NUMBER

48 - P1.5

TACLK

ACLK

Timer

SMCLK

Timer

48 - P1.5

TACLK

INCLK

53 - P1.0

TA0

CCI0A

53 - P1.0

52 - P1.1

TA0

CCI0B

CCR0

TA0

DVSS

GND

CCR0

TA0

DVCC

VCC

51 - P1.2

TA1

CCI1A

51 - P1.2

TA1

CCI1B

CCR1

TA1

DVSS

GND

CCR1

TA1

DVCC

VCC

45 - P2.0

TA2

CCI2A

45 - P2.0

ACLK (internal)

CCI2B

CCR2

TA2

DVSS

GND

CCR2

TA2

DVCC

VCC

universal synchronous/asynchronous receive transmit (USART)

The MSP430F42xA devices have one hardware USART peripheral module (USART0) 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.

MSP430F423AIPM Datasheet(PDF) 13 Page - Texas Instruments

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