MSP430X15X Datasheet, PDF (17/73 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430x15x, MSP430x16x, MSP430x161x
MIXED SIGNAL MICROCONTROLLER
SLAS368E − OCTOBER 2002 − REVISED AUGUST 2006
USART0
The MSP430x15x and the MSP430x16x(x) 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), asynchronous UART and I2C communication protocols using double-buffered
transmit and receive channels.
The I²C support is compliant with the Philips I²C specification version 2.1 and supports standard mode (up to
100 kbps) and fast mode (up to 400 kbps). In addition, 7-bit and 10-bit device addressing modes are supported,
as well as master and slave modes. The USART0 also supports 16-bit-wide I²C data transfers and has two
dedicated DMA channels to maximize bus throughput. Extensive interrupt capability is also given in the I²C
mode.
USART1 (MSP430x16x/161x Only)
The MSP430x16x(x) devices have a second hardware universal synchronous/asynchronous receive transmit
(USART1) 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. With the exception of I2C support, operation of USART1 is identical to USART0.
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
12 - P1.0
21 - P2.1
13 - P1.1
22 - P2.2
14 - P1.2
15 - P1.3
Device Input Signal
TACLK
ACLK
SMCLK
TAINCLK
TA0
TA0
DV_SS
DV_CC
TA1
CAOUT (internal)
DV_SS
DV_CC
TA2
ACLK (internal)
DV_SS
DV_CC
Timer_A3 Signal Connections
Module Input Name Module Block
TACLK
ACLK
SMCLK
Timer
INCLK
CCI0A
CCI0B
GND
CCR0
V_CC
CCI1A
CCI1B
GND
CCR1
V_CC
CCI2A
CCI2B
GND
CCR2
V_CC
Module Output Signal
NA
TA0
TA1
TA2
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
timer_B3 (MSP430x15x Only)
Timer_B3 is a 16-bit timer/counter with three capture/compare registers. Timer_B3 can support multiple
capture/compares, PWM outputs, and interval timing. Timer_B3 also has extensive interrupt capabilities.
Interrupts may be generated from the counter on overflow conditions and from each of the capture/compare
registers.
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