The document discusses the features and architecture of the Atmega328P microcontroller. It has 32KB of flash memory, 2KB of SRAM, and 1KB of EEPROM. It features timers, PWM, ADC, serial communication interfaces, and 23 I/O pins. The CPU core uses an 8-bit RISC architecture and operates at speeds up to 20MHz. It has 32 general purpose registers and powerful instructions that typically execute in a single clock cycle.
This is mainly intended for young faculty who are involved in ARM processor architecture teaching. This may also be useful to those who are keen in understanding the secrets of ARM architecture.Very good luck
This presentation gives an overview of the PIC micro-controllers. Additionally, it describes the advantages, disadvantages and applications of these micro-controllers. It also explains real-world projects that are possible using the PIC micro-controllers.
This is mainly intended for young faculty who are involved in ARM processor architecture teaching. This may also be useful to those who are keen in understanding the secrets of ARM architecture.Very good luck
This presentation gives an overview of the PIC micro-controllers. Additionally, it describes the advantages, disadvantages and applications of these micro-controllers. It also explains real-world projects that are possible using the PIC micro-controllers.
Presents features of ARM Processors, ARM architecture variants and Processor families. Further presents, ARM v4T architecture, ARM7-TDMI processor: Register organization, pipelining, modes, exception handling, bus architecture, debug architecture and interface signals.
This Presentation describes the ARM CORTEX M3 core processor with the details of the core peripherals. Soon a CORTEX base controller(STM32F100RBT6) ppt will be uploaded. For more information mail me at:gaurav.iitkg@gmail.com.
Complete description of AT89xxx (8051 based) microcontrollers with timers, serial communication and assembly language programming. Interfacing of some real time devices like led, sensor, and seven segment display is also covered.
this is the brief description of the 8085 microprocessor. in this ppt, I described the key features of 8085, architecture, pin diagram, interfacing, timing diagram, some program, etc. I have also discussed the memory interfacing of 8085 microprocessor.
this ppt only for beginner who want to understand concept of Timer counter operation of LPC2148 step by step.
hope it may help u.
always welcoming ur suggestion.
Presents features of ARM Processors, ARM architecture variants and Processor families. Further presents, ARM v4T architecture, ARM7-TDMI processor: Register organization, pipelining, modes, exception handling, bus architecture, debug architecture and interface signals.
This Presentation describes the ARM CORTEX M3 core processor with the details of the core peripherals. Soon a CORTEX base controller(STM32F100RBT6) ppt will be uploaded. For more information mail me at:gaurav.iitkg@gmail.com.
Complete description of AT89xxx (8051 based) microcontrollers with timers, serial communication and assembly language programming. Interfacing of some real time devices like led, sensor, and seven segment display is also covered.
this is the brief description of the 8085 microprocessor. in this ppt, I described the key features of 8085, architecture, pin diagram, interfacing, timing diagram, some program, etc. I have also discussed the memory interfacing of 8085 microprocessor.
this ppt only for beginner who want to understand concept of Timer counter operation of LPC2148 step by step.
hope it may help u.
always welcoming ur suggestion.
The ATmega16A is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC
architecture. By executing powerful instructions in a single clock cycle, the ATmega16A
achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize
power consumption versus processing speed.
atemega adalah salah satu mikrokontroller yang banyak digunakan dalam pembuatan otomasi kontrol. mikrokontroller akan berguna layaknya sebuah CPU(central processing unit) dalam komputer.
The ATmega16 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced
RISC architecture. By executing powerful instructions in a single clock cycle, the
ATmega16 achieves throughputs approaching 1 MIPS per MHz allowing the system
designer to optimize power consumption versus processing speed.
These slides explain the topics mentioned in Chapter 1, part (a) of the course EE110-Basic Electrical and Electronics Engineering, prescribed for non-circuit branches of engineering at JSS Science & Technology University, Sri Jayachamarajendra College of Engineering, Mysuru, India
Explains the difference between a microprocessor and a microcontroller, address, data, and control buses, word length and memory address space in a computer.
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The purpose of on-line aptitude test system is to take online test in an efficient manner and no time wasting for checking the paper. The main objective of on-line aptitude test system is to efficiently evaluate the candidate thoroughly through a fully automated system that not only saves lot of time but also gives fast results. For students they give papers according to their convenience and time and there is no need of using extra thing like paper, pen etc. This can be used in educational institutions as well as in corporate world. Can be used anywhere any time as it is a web based application (user Location doesn’t matter). No restriction that examiner has to be present when the candidate takes the test.
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Harnessing WebAssembly for Real-time Stateless Streaming PipelinesChristina Lin
Traditionally, dealing with real-time data pipelines has involved significant overhead, even for straightforward tasks like data transformation or masking. However, in this talk, we’ll venture into the dynamic realm of WebAssembly (WASM) and discover how it can revolutionize the creation of stateless streaming pipelines within a Kafka (Redpanda) broker. These pipelines are adept at managing low-latency, high-data-volume scenarios.
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L8 understanding-atmega328 p-1
1. Understanding Atmega328P Microcontroller
(Lecture-8)
R S Ananda Murthy
Associate Professor and Head
Department of Electrical & Electronics Engineering,
Sri Jayachamarajendra College of Engineering,
Mysore 570 006
R S Ananda Murthy Understanding Atmega328P Microcontroller
2. Atmega328P Features
High Performance, Low Power Atmel AVR 8-Bit
Microcontroller Family.
Advanced RISC Harvard Architecture
131 Powerful Instructions – Most Single Clock Cycle
Execution
32×8 General Purpose Working Registers
Fully Static Operation (with power on, the contents of
registers remain intact even with no clock signal)
Up to 20 MIPS Throughput at 20 MHz
On-chip 2-cycle Multiplier
Operating Voltage
1.8 V to 5.5 V
Temperature Range
−40◦ C to 85◦ C
R S Ananda Murthy Understanding Atmega328P Microcontroller
3. Atmega328P Features
High Endurance Non-volatile Memory Segments
32 K Bytes of In-System Self-Programmable Flash program
memory
1 K Bytes EEPROM
2 K Bytes Internal SRAM
Write/Erase Cycles: 10,000 Flash/100,000 EEPROM
Optional Boot Code Section with Independent Lock Bits
Programming Lock for Software Security
I/O and Packages
23 Programmable I/O Lines
28-pin PDIP, 32-lead TQFP, 28-pad QFN/MLF and 32-pad
QFN/MLF
R S Ananda Murthy Understanding Atmega328P Microcontroller
4. Atmega328P Features
Peripheral Features
Two 8-bit Timer/Counters with Separate Prescaler and
Compare Mode
One 16-bit Timer/Counter with Separate Prescaler,
Compare Mode, and Capture Mode
Real Time Counter with Separate Oscillator
Six PWM Channels
8-channel 10-bit ADC in TQFP and QFN/MLF package
6-channel 10-bit ADC in PDIP Package
Programmable Serial USART
Master/Slave SPI Serial Interface
Byte-oriented 2-wire Serial Interface (Philips I2C
compatible)
Programmable Watchdog Timer with Separate On-chip
Oscillator
On-chip Analog Comparator
Interrupt and Wake-up on Pin Change
R S Ananda Murthy Understanding Atmega328P Microcontroller
5. Atmega328P Features
Special Microcontroller Features
Power-on Reset and Programmable Brown-out Detection
Internal Calibrated Oscillator
External and Internal Interrupt Sources
Six Sleep Modes: Idle, ADC Noise Reduction, Power-save,
Power-down, Standby, and Extended Standby
Speed Grade
0 - 4 MHz @ 1.8 - 5.5V, 0 - 10 MHz @ 2.7 - 5.5 V, 0 -
20MHz @ 4.5 - 5.5 V
Power Consumption at 1 MHz, 1.8 V, 25◦C
Active Mode: 0.2mA
Power-down Mode: 0.1µA
Power-save Mode: 0.75µA (Including 32kHz RTC)
R S Ananda Murthy Understanding Atmega328P Microcontroller
6. Types of Atmega328P Packages
28-Pin Plastic Dual In-line Package (PDIP)
R S Ananda Murthy Understanding Atmega328P Microcontroller
7. Types of Atmega328P Packages
32-pin Thin Quad Flat Package (TQFP)
R S Ananda Murthy Understanding Atmega328P Microcontroller
8. Types of Atmega328P Packages
32-pin Micro Lead Frame (MLF) or
Quad Flat No-leads (QFN) package.
A similar 28-pin package is also available.
R S Ananda Murthy Understanding Atmega328P Microcontroller
9. Atmega328P PDIP Pinout Details
Many pins have more than one function
R S Ananda Murthy Understanding Atmega328P Microcontroller
13. Pin Descriptions of Atmega328P
Vcc – Supply voltage.
GND – Ground.
Port B (PB7:0) XTAL1/XTAL2/TOSC1/TOSC2 – 8-bit
bi-directional I/O port with internal pull-up resistors.
Across PB7 and PB6 external oscillator or quartz crystal
should be connected to generate chip clock signal if
internal oscillator is not used.
PB7 and PB6 is used as TOSC2...1 input for the
Asynchronous Timer/Counter2 if the AS2 bit in ASSR is
set, when internal chip clock is used.
R S Ananda Murthy Understanding Atmega328P Microcontroller
14. Pin Descriptions of Atmega328P
Port C (PC5:0) – These are six lines of 7-bit bi-directional
I/O port with internal pull-up resistors.
PC6/RESET – Depending upon how the chip is
programmed, this pin can be used as an I/O pin or as input
to reset the MCU.
Port D (PD7:0) – 8-bit bi-directional I/O port with internal
pull-up resistors.
R S Ananda Murthy Understanding Atmega328P Microcontroller
15. Pin Descriptions of Atmega328P
AVcc – supply voltage pin for the A/D Converter, PC3:0,
and ADC7:6. It should be externally connected to Vcc ,
even if the ADC is not used. If the ADC is used, it should
be connected to Vcc through a low-pass filter.
AREF – the analog reference pin for the A/D Converter.
ADC7:6 (TQFP and QFN/MLF Package Only) – in the
TQFP and QFN/MLF package, ADC7:6 serve as analog
inputs to the A/D converter. These pins are powered from
the analog supply and serve as 10-bit ADC channels.
R S Ananda Murthy Understanding Atmega328P Microcontroller
17. Atmega328P CPU Core Architecture
R S Ananda Murthy Understanding Atmega328P Microcontroller
18. Flash Program Memory in Atmega328P – 16K×16
16 Bits
D15 D14 D0D1D2. . . . . . . . . . .
$0000
$3FFF
Application Program
Section
Bootloader Section
Hex Address
16 K = 16384
Locations
Size of bootloader
section is configurable
using fuse bits
Bootloader is a
program executed by
the MCU to write code
into the flash memory
or read the code from
program memory.
Can endure at least 10,000 write/erase cycles. Nonvolatile.
Since the program memory address has 14 bits, the
Program Counter width is also 14 bits.
Bootloader can be protected using lock bits.
R S Ananda Murthy Understanding Atmega328P Microcontroller
19. SRAM Data Memory in Atmega328P – Volatile
32 Registers (GPRs)
D0D1D2. . . . . . . . . . . .
0x0000 - 0x001F
Hex Addresses
64 I/O Registers (SFRs)
D7
160 Ext I/O Registers
0x0020 - 0x005F
2048 x 8 Scratch Pad
0x0060 - 0x00FF
0x0100 - 0x08FF
8 Bits
Stores operands and results
of arithmetic/logical operations
Used to access peripherals
Used to access extra peripherals
Used to store temporary data
R S Ananda Murthy Understanding Atmega328P Microcontroller
20. EEPROM in Atmega328P
Size is 1 K×8.
It is organized as a separate data space, in which single
bytes can be read and written.
Can endure at least 100,000 write/erase cycles.
Non-volatile storage for program specific data, constants,
etc.
Requires special write sequence to store data.
Should be accessed using EEPROM Address Register,
EEPROM Data Register and EEPROM Control Register.
R S Ananda Murthy Understanding Atmega328P Microcontroller
21. License
This work is licensed under a
Creative Commons Attribution 4.0 International License.
R S Ananda Murthy Understanding Atmega328P Microcontroller