MSP430F249-EP_14 Datasheet, PDF (15/82 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F249-EP
MIXED SIGNAL MICROCONTROLLER
2008
digital I/O
There are up to six 8-bit I/O ports implemented—ports P1 through P6.
D All individual I/O bits are independently programmable.
D Any combination of input, output, and interrupt conditions is possible.
D Edge-selectable interrupt input capability for all eight bits of ports P1 and P2.
D Read/write access to port-control registers is supported by all instructions.
D Each I/O has an individually programmable pullup/pulldown resistor.
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.
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.
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
12 - P1.0
TACLK
ACLK
SMCLK
21 - P2.1
TAINCLK
13 - P1.1
TA0
22 - P2.2
TA0
14 - P1.2
DV_SS
DV_CC
TA1
CAOUT (internal)
15 - P1.3
DV_SS
DV_CC
TA2
ACLK (internal)
DV_SS
DV_CC
† _{Not available in the MSP430F24x1 devices}
TIMER_A3 SIGNAL CONNECTIONS
MODULE INPUT
NAME
MODULE
BLOCK
MODULE OUTPUT
SIGNAL
TACLK
ACLK
Timer
NA
SMCLK
INCLK
CCI0A
CCI0B
CCR0
TA0
GND
V_CC
CCI1A
CCI1B
CCR1
TA1
GND
V_CC
CCI2A
CCI2B
CCR2
TA2
GND
V_CC
OUTPUT PIN NUMBER
13 - P1.1
17 - P1.5
27 - P2.7
14 - P1.2
18 - P1.6
23 - P2.3
ADC12{ (internal)
15 - P1.3
19 - P1.7
24 - P2.4
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