Datasheet

MSP430FE42xA
MIXED SIGNAL MICROCONTROLLER
SLAS588 -- FEBRUARY 2008
13
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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 r egisters. 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
T
i
m
e
r
N
A
SMCLK SMCLK
Timer N
A
48 - P1.5 TACLK INCLK
53 - P1.0 TA0 CCI0A
53 - P1.0
52 - P1.1 TA0 CCI0B
C
C
R
0
T
A
0
DV
SS
GND
CCR0 T
A
0
DV
CC
V
CC
51 - P1.2 TA1 CCI1A
51 - P1.2
51 - P1.2 TA1 CCI1B
C
C
R
1
T
A
1
DV
SS
GND
CCR1 T
A
1
DV
CC
V
CC
45 - P2.0 TA2 CCI2A
45 - P2.0
ACLK (internal) CCI2B
C
C
R
2
T
A
2
DV
SS
GND
CCR2 T
A
2
DV
CC
V
CC
universal synchronous/asynchronous receive transmit (USART)
The MSP430FE42xA 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.
ESP430CE1A
The ESP430CE1A module integrates a hardware multiplier, three independent 16-bit sigma-delta A/D
converters (SD16) and an embedded signal processor (ESP430). The ESP430CE1A module measures 2-wire
or 3-wire single-phase energy and automatically calcul ates parameters that 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.