lecA09-9-Timer

lecA09-9-Timer - WPI ECE2801 Foundations of Embedded...

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WPI ECE2801 Foundations of Embedded Computer Systems Lecture 9: Clocks and Timers
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EE2801: Foundations of Embedded Systems Lecture 9 MSP430F449 Peripherals 6 Digital I/O Ports FLL/System Clock module 4 Timers ADC (8 channel 12 BIT) 2 USARTs (SPI) Hardware Multiplier Op amps Comparator Flash memory controller LCD Controller DMA controller
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EE2801: Foundations of Embedded Systems Lecture 9 Control and Use of Peripherals Program control and operation of most of these peripherals is similar One or more Control Registers One or more Data Registers All are memory mapped All register names and even control bit names are already defined in msp430x4xx.h Read from and write to register names as if they were C variables! Will NEED to refer to MSP430 User's Guide and Data Sheet to determine how to configure each specific peripheral
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EE2801: Foundations of Embedded Systems Lecture 9 MSP430 Clock System Microcontroller and peripherals are synchronous sequential logic circuits. They need to be clocked. What does a CLOCK signal look like? – Square wave CPU clock provides the system’s time reference Flexible and low power: different clocks for different peripheral
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This note was uploaded on 10/12/2009 for the course ECE 2801 taught by Professor Jarvis during the Spring '08 term at WPI.

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lecA09-9-Timer - WPI ECE2801 Foundations of Embedded...

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