Datasheet

MSP430x12x
MIXED SIGNAL MICROCONTROLLER
SLAS312C − JULY 2001 − REVISED SEPTEMBER 2004
10
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
USART0
The MSP430x12x 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.
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
DW, PW RHB
Device Input Signal Module Input Name Module Block Module Output Signal
DW, PW RHB
21 - P1.0 21 - P1.0 TACLK TACLK
ACLK ACLK
Timer
NA
SMCLK SMCLK
Timer NA
9 - P2.1 7 - P2.1 INCLK INCLK
22 - P1.1 22 - P1.1 TA0 CCI0A
22 - P1.1 22 - P1.1
10 - P2.2 8 - P2.2 TA0 CCI0B
CCR0
TA0
26 - P1.5 26 - P1.5
DV
SS
GND
CCR0 TA0
DV
CC
V
CC
23 - P1.2 23 - P1.2 TA1 CCI1A
19 - P2.3 18 - P2.3
CAOUT (internal) CCI1B
CCR1
TA1
23 - P1.2 23 - P1.2
DV
SS
GND
CCR1 TA1
27 - P1.6 27 - P1.6
DV
CC
V
CC
24 - P1.3 24 - P1.3 TA2 CCI2A
20 - P2.4 19 - P2.4
ACLK (internal) CCI2B
CCR2
TA2
24 - P1.3 24 - P1.3
DV
SS
GND
CCR2 TA2
28 - P1.7 28 - P1.7
DV
CC
V
CC
comparator_A
The primary function of the comparator_A module is to support precision slope analog-to-digital conversions,
battery-voltage supervision, and monitoring of external analog signals.