Datasheet
MSP430FE42x2
MIXED SIGNAL MICROCONTROLLER
SLAS616 − JULY 2008
13
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 TACLK
ACLK ACLK
Timer
NA
SMCLK SMCLK
Timer NA
48 - P1.5 TACLK INCLK
53 - P1.0 TA0 CCI0A
53 - P1.0
52 - P1.1 TA0 CCI0B
CCR0
TA0
DV
SS
GND
CCR0 TA0
DV
CC
V
CC
51 - P1.2 TA1 CCI1A
51 - P1.2
51 - P1.2 TA1 CCI1B
CCR1
TA1
DV
SS
GND
CCR1 TA1
DV
CC
V
CC
45 - P2.0 TA2 CCI2A
45 - P2.0
ACLK (internal) CCI2B
CCR2
TA2
DV
SS
GND
CCR2 TA2
DV
CC
V
CC
universal synchronous/asynchronous receive transmit (USART0)
The MSP430FE42x2 devices have one hardware USART0 peripheral module that is used for serial data
communication. The USART supports synchronous SPI (3-pin or 4-pin) and asynchronous UART
communication protocols, using double-buffered transmit and receive channels.
ESP430CE1B
The ESP430CE1B module integrates a hardware multiplier, two independent 16-bit sigma-delta A/D converters
(SD16) and an embedded signal processor (ESP430). The ESP430CE1B module measures 2 or 3-wire,
single-phase energy and automatically calculates parameters which are made available to the MSP430 CPU.
The module can be calibrated and initialized to accurately calculate energy, power factor, etc., for a wide range
of metering sensor configurations.