Описание
The Microchip ATmega324PA is a low-power CMOS 8-bitmicrocontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a singleclock cycle, the ATmega324PA achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processingspeed. The AVR core combines a rich instruction set with 32 general purpose working registers. All the 32 registers aredirectly connected to the Arithmetic Logic Unit (ALU), allowing two independent registers to be accessed in onesingle instruction executed in one clock cycle. The resulting architecture is more code efficient while achievingthroughputs up to ten times faster than conventional CISC microcontrollers. The Microchip ATmega324PA provide the following features: 16/32/64/128Kbytes of In-System Programmable Flash with Read-While-Write capabilities, 512/1K/2K/4KbytesEEPROM, 1/2/4/16Kbytes SRAM, 32 general purpose I/O lines, 32 general purpose working registers, RealTime Counter (RTC), three (four for ATmega1284/1284P) flexible Timer/Counters with compare modes andPWM, 2 USARTs, a byte oriented two-wire Serial Interface, a 8-channel, 10-bit ADC with optional differentialinput stage with programmable gain, programmable Watchdog Timer with Internal Oscillator, an SPI serial port,IEEE std. 1149.1 compliant JTAG test interface, also used for accessing the On-chip Debug system andprogramming and six software selectable power saving modes. The Idle mode stops the CPU while allowing theSRAM, Timer/Counters, SPI port, and interrupt system to continue functioning. The Power-down mode savesthe register contents but freezes the Oscillator, disabling all other chip functions until the next interrupt orHardware 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/Omodules except Asynchronous Timer and ADC, to minimize switching noise during ADC conversions. InStandby mode, the Crystal/Resonator Oscillator is running while the rest of the device is sleeping. This allowsvery fast start-up combined with low power consumption. In Extended Standby mode, both the main Oscillatorand the Asynchronous Timer continue to run. Microchip offers the QTouch library for embedding capacitive touch buttons, sliders and wheels functionality intoAVR microcontrollers. The patented charge-transfer signal acquisition offers robust sensing and includes fullydebounced reporting of touch keys and includes Adjacent Key Suppression (AKS) technology forunambiguous detection of key events. The easy-to-use QTouch Suite toolchain allows you to explore, developand debug your own touch applications. The device is manufactured using Microchip’s high-density nonvolatile memory technology. The On-chip ISP Flashallows the program memory to be reprogrammed in-system through an SPI serial interface, by a conventionalnonvolatile memory programmer, or by an On-chip Boot program running on the AVR core. The boot programcan use any interface to download the application program in the application Flash memory. Software in theBoot Flash section will continue to run while the Application Flash section is updated, providing true ReadWhile-Writeoperation. By combining an 8-bit RISC CPU with In-System Self-Programmable Flash on amonolithic chip, the Microchip ATmega324PA is a powerful microcontroller that provides a highly flexible and cost effective solution to many embedded control applications. The ATmega324PA is supported with a full suite of program andsystem development tools including: C compilers, macro assemblers, program debugger/simulators, in-circuitemulators, and evaluation kits.
- High-performance, low-power 8-bit Atmel® AVR® Microcontroller
- Advanced RISC architecture
- 131 powerful Instructions – most single-clock cycle execution ?
- 32 × 8 general purpose working registers ?
- Fully static operation
- Up to 20MIPS throughput at 20MHz ?
- On-chip 2-cycle multiplier
- High endurance non-volatile memory segments ?
- 16/32/64/128KBytes of In-System Self-programmable Flash program memory ?
- 512/1K/2K/4KBytes EEPROM ?
- /2/4/16KBytes Internal SRAM ?
- Write/Erase Cycles: 10,000 Flash/ 100,000 EEPROM ?
- Data retention: 20 years at 85°C/ 100 years at 25°C(1) ?
- Optional Boot Code Section with Independent Lock Bits
- In-System Programming by On-chip Boot Program
- True Read-While-Write Operation ?
- Programming Lock for Software Security
- Atmel QTouch® library support ?
- Capacitive touch buttons, sliders and wheels ?
- QTouch and QMatrix acquisition ?
- Up to 64 sense channels
- JTAG (IEEE std. 1149.1 Compliant) Interface ?
- Boundary-scan Capabilities According to the JTAG Standard ?
- Extensive On-chip Debug Support ?
- Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface
- Peripheral Features
- Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes ?
- One/two 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
- Differential mode with selectable gain at 1×, 10× or 200× ?
- Byte-oriented Two-wire Serial Interface ?
- Two Programmable Serial USART ?
- Master/Slave SPI Serial Interface ?
- Programmable Watchdog Timer with Separate On-chip Oscillator ?
- On-chip Analog Comparator ?
- Interrupt and Wake-up on Pin Change
- 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, 44-lead TQFP, 44-pad VQFN/QFN/MLF ?
- 44-pad DRQFN
- 49-ball VFBGA
- Operating Voltages ?
- 1.8 – 5.5V
- Speed Grades ?
- 0 – 4MHz @ 1.8 – 5.5V ?
- 0 – 10MHz @ 2.7 – 5.5V ?
- 0 – 20MHz @ 4.5 – 5.5V
- Power Consumption at 1MHz, 1.8V, 25?C ?
- Active: 0.4mA ?
- Power-down Mode: 0.1µA ?
- Power-save Mode: 0.6µA (Including 32kHz RTC)
