Texas Instruments MSP430 Student Guide

Timer Details: Configuring TIMER_A
2b. Compare: TIMER_A_initCompare()
The other use of CCR is for comparisons to the main timer/counter (TAR).
Once again, before we walk through the function that initializes CCR for Compare, let’s examine
its options:
• Set CAP=0 for the CCR to be configured for Compare Mode. (Opposite from earlier.)
• You must set the CCR2 register to a 16-bit value. When TAR = CCR2:
− An internal signal called EQU2 is set.
− If enabled, EQU2 drives the interrupt flag high (CC2IFG).
− Similar to the Capture mode, the CCR’s output signal is modified by EQU2. Again, this
signal is available to other internal peripherals and/or routed to a pin (in this case, TA0.2).
− Again, similar to the Capture mode, there are a variety of possible output modes for the
OUT2 signal (which will be discussed shortly).
MSP430 Workshop - Timers 6 - 21

Texas Instruments MSP430 Specifications

General

Program Memory Type	Flash
Clock Speed	Up to 25 MHz (depending on the specific device)
Flash Memory	Up to 512 KB (depending on the specific device)
RAM	Up to 66 KB (depending on the specific device)
Operating Voltage	1.8V - 3.6V (depending on the specific device)
ADC	10-bit or 12-bit SAR ADC
Communication Interfaces	UART, SPI, I2C, USB
DMA	Yes (depending on the specific device)
Operating Temperature	-40°C to +85°C
Architecture	16-bit RISC
Low Power Modes	Multiple (LPM0 to LPM4)