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ATMEGA323L 데이터시트 PDF




ATMEL Corporation에서 제조한 전자 부품 ATMEGA323L은 전자 산업 및 응용 분야에서
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부품번호 ATMEGA323L 기능
기능 8-bit Microcontroller with 32K Bytes of In-System Programmable Flash
제조업체 ATMEL Corporation
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ATMEGA323L 데이터시트, 핀배열, 회로
Features
High-performance, Low-power AVR® 8-bit Microcontroller
Advanced RISC Architecture
– 130 Powerful Instructions – Most Single-clock Cycle Execution
– 32 x 8 General Purpose Working Registers
– Fully Static Operation
– Up to 8 MIPS Throughput at 8 MHz
– On-chip 2-cycle Multiplier
Non-volatile Program and Data Memories
– 32K Bytes of In-System Self-programmable Flash
Endurance: 1,000 Write/Erase Cycles
– Optional Boot Code Section with Independent Lock Bits
In-System Programming by On-chip Boot Program
– 1K Byte EEPROM
Endurance: 100,000 Write/Erase Cycles
– 2K Bytes Internal SRAM
– Programming Lock for Software Security
JTAG (IEEE Std. 1149.1 Compliant) Interface
– Extensive On-chip Debug Support
– Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface
– Boundary-Scan Capabilities According to the JTAG Standard
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
– Four PWM Channels
– 8-channel, 10-bit ADC
– Byte-oriented Two-wire Serial Interface
– Programmable Serial USART
– Master/Slave SPI Serial Interface
– Programmable Watchdog Timer with Separate On-chip Oscillator
– On-chip Analog Comparator
Special Microcontroller Features
– Power-on Reset and Programmable Brown-out Detection
– Internal Calibrated RC Oscillator
– External and Internal Interrupt Sources
– Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby
and Extended Standby
I/O and Packages
– 32 Programmable I/O Lines
– 40-pin PDIP and 44-lead TQFP
Operating Voltages
– 2.7 - 5.5V (ATmega323L)
– 4.0 - 5.5V (ATmega323)
Speed Grades
– 0 - 4 MHz (ATmega323L)
– 0 - 8 MHz (ATmega323)
8-bit
Microcontroller
with 32K Bytes
of In-System
Programmable
Flash
ATmega323
ATmega323L
Not recommended
for new designs.
Use ATmega32.
1457G–AVR–09/03




ATMEGA323L pdf, 반도체, 판매, 대치품
Pin Descriptions
VCC
GND
Port A (PA7..PA0)
The AVR core combines a rich instruction set with 32 general purpose working registers.
All the 32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing
two independent registers to be accessed in one single instruction executed in one clock
cycle. The resulting architecture is more code efficient while achieving throughputs up to
ten times faster than conventional CISC microcontrollers.
The ATmega323 provides the following features: 32K bytes of In-System Programmable
Flash, 1K bytes EEPROM, 2K bytes SRAM, 32 general purpose I/O lines, 32 general
purpose working registers, a JTAG interface for Boundary-Scan, On-chip Debugging
support and programming, three flexible Timer/Counters with compare modes, internal
and external interrupts, a serial programmable USART, a byte oriented Two-wire Serial
Interface, an 8-channel, 10-bit ADC, a programmable Watchdog Timer with internal
Oscillator, an SPI serial port, and six software selectable power saving modes. The Idle
mode stops the CPU while allowing the SRAM, Timer/Counters, SPI port, and interrupt
system to continue functioning. The Power-down mode saves the register contents but
freezes the Oscillator, disabling all other chip functions until the next interrupt or Hard-
ware Reset. In Power-save mode, the asynchronous timer continues to run, allowing the
user to maintain a timer base while the rest of the device is sleeping. The ADC Noise
Reduction mode stops the CPU and all I/O modules except asynchronous timer and
ADC, to minimize switching noise during ADC conversions. In Standby mode, the crys-
tal/resonator Oscillator is running while the rest of the device is sleeping. This allows
very fast start-up combined with low-power consumption. In Extended Standby mode,
both the main Oscillator and the asynchronous timer continue to run.
The device is manufactured using Atmel’s high-density non-volatile memory technology.
The On-chip ISP Flash allows the Program memory to be re-programmed In-System
through an SPI serial interface, by a conventional non-volatile memory programmer, or
by an On-chip Boot Program running on the AVR core. The Boot Program can use any
interface to download the application program in the Application Flash memory. By com-
bining an 8-bit RISC CPU with In-System Programmable Flash on a monolithic chip, the
Atmel ATmega323 is a powerful microcontroller that provides a highly flexible and cost
effective solution to many embedded control applications.
The ATmega323 AVR is supported with a full suite of program and system development
tools including: C compilers, macro assemblers, program debugger/simulators, In-Cir-
cuit Emulators, and evaluation kits.
Digital supply voltage.
Digital ground.
Port A serves as the analog inputs to the A/D Converter.
Port A also serves as an 8-bit bi-directional I/O port, if the A/D Converter is not used.
Port pins can provide internal pull-up resistors (selected for each bit). The Port A output
buffers can sink 20 mA and can drive LED displays directly. When pins PA0 to PA7 are
used as inputs and are externally pulled low, they will source current if the internal pull-
up resistors are activated. The Port A pins are tri-stated when a reset condition
becomes active, even if the clock is not running.
4 ATmega323(L)
1457G–AVR–09/03

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ATMEGA323L 전자부품, 판매, 대치품
External Clock
ATmega323(L)
To drive the device from an external clock source, XTAL1 should be driven as shown in
Figure 3.
Figure 3. External Clock Drive Configuration
External RC Oscillator
For timing insensitive applications, the external RC configuration shown in Figure 4 can
be used. For details on how to choose R and C, see Table 73 on page 215.
Figure 4. External RC Configuration
VCC
R NC
C
XTAL2
XTAL1
GND
Timer Oscillator
For the Timer Oscillator pins, PC6(TOSC1) and PC7(TOSC2), the crystal is connected
directly between the pins. No external capacitors are needed. The Oscillator is opti-
mized for use with a 32.768 kHz watch crystal. Applying an external clock source to
PC6(TOSC1) is not recommended.
1457G–AVR–09/03
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관련 데이터시트

부품번호상세설명 및 기능제조사
ATmega323

8-bit Microcontroller with 32K Bytes of In-System Programmable Flash

ATMEL Corporation
ATMEL Corporation
ATMEGA323L

8-bit Microcontroller with 32K Bytes of In-System Programmable Flash

ATMEL Corporation
ATMEL Corporation

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