MSP430F643 Datasheet, PDF (22/106 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F643x
SLAS720B – AUGUST 2010 – REVISED AUGUST 2012
www.ti.com
DMA Controller
The DMA controller allows movement of data from one memory address to another without CPU intervention. For
example, the DMA controller can be used to move data from the ADC12_A conversion memory to RAM. Using
the DMA controller can increase the throughput of peripheral modules. The DMA controller reduces system
power consumption by allowing the CPU to remain in sleep mode, without having to awaken to move data to or
from a peripheral.
Table 14. DMA Trigger Assignments⁽¹⁾
Trigger
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
0
DMA5IFG
1
DMA0IFG
Channel
2
3
DMAREQ
TA0CCR0 CCIFG
TA0CCR2 CCIFG
TA1CCR0 CCIFG
TA1CCR2 CCIFG
TA2CCR0 CCIFG
TA2CCR2 CCIFG
TBCCR0 CCIFG
TBCCR2 CCIFG
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
UCA0RXIFG
UCA0TXIFG
UCB0RXIFG
UCB0TXIFG
UCA1RXIFG
UCA1TXIFG
UCB1RXIFG
UCB1TXIFG
ADC12IFGx
DAC12_0IFG ⁽²⁾
DAC12_1IFG ⁽²⁾
Reserved
Reserved
MPY ready
DMA1IFG
DMA2IFG
DMAE0
4
DMA3IFG
5
DMA4IFG
(1) Reserved DMA triggers may be used by other devices in the family. Reserved DMA triggers will not
cause any DMA trigger event when selected.
(2) Only on devices with peripheral module DAC12_A. Reserved on devices without DAC.
Universal Serial Communication Interface (USCI)
The USCI modules are used for serial data communication. The USCI module supports synchronous
communication protocols such as SPI (3 or 4 pin) and I²C, and asynchronous communication protocols such as
UART, enhanced UART with automatic baudrate detection, and IrDA. Each USCI module contains two portions,
A and B.
22
Copyright © 2010–2012, Texas Instruments Incorporated