ATMEGA329PA_14 Datasheet, PDF (7/39 Pages) ATMEL Corporation – 8-bit Atmel Microcontroller with 16/32/64KB In-System Programmable Flash

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 Atmel ATmega169A/169PA/329A/329PA/3290A/3290PA/649A/649P/6490A/6490P provides the following
features: 16K/32K/64K bytes of In-System Programmable Flash with Read-While-Write capabilities, 512/1K/2K
bytes EEPROM, 1K/2K/4K byte SRAM, 54/69 general purpose I/O lines, 32 general purpose working registers, a
JTAG interface for Boundary-scan, On-chip Debugging support and programming, a complete On-chip LCD
controller with internal contrast control, three flexible Timer/Counters with compare modes, internal and external
interrupts, a serial programmable USART, Universal Serial Interface with Start Condition Detector, an 8-channel,
10-bit ADC, a programmable Watchdog Timer with internal Oscillator, an SPI serial port, and five 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 hardware reset. In Power-save mode, the
asynchronous timer and the LCD controller continues to run, allowing the user to maintain a timer base and
operate the LCD display while the rest of the device is sleeping. The ADC Noise Reduction mode stops the CPU
and all I/O modules except asynchronous timer, LCD controller and ADC, to minimize switching noise during ADC
conversions. In Standby mode, the XTAL/resonator Oscillator is running while the rest of the device is sleeping.
This allows very fast start-up combined with low-power consumption.
Atmel offers the QTouch library for embedding capacitive touch buttons, sliders and wheels functionality into AVR
microcontrollers. The patented charge-transfer signal acquisition offers robust sensing and includes fully
debounced reporting of touch keys and includes Adjacent Key Suppression^® (AKS^®) technology for unambiguous
detection of key events. The easy-to-use QTouch Suite toolchain allows you to explore, develop and debug your
own touch applications.
The device is manufactured using the Atmel high density non-volatile memory technology. The On-chip In-System
re-Programmable (ISP) Flash allows the program memory to be reprogrammed 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. Software in the Boot Flash section will continue to run while the Application Flash section is updated,
providing true Read-While-Write operation.
By combining an 8-bit RISC CPU with In-System Self-Programmable Flash on a monolithic chip, the
ATmega169A/169PA/329A/329PA/3290A/3290PA/649A/649P/6490A/6490P is a powerful microcontroller that
provides a highly flexible and cost effective solution to many embedded control applications.
The ATmega169A/169PA/329A/329PA/3290A/3290PA/649A/649P/6490A/6490P AVR is supported with a full
suite of program and system development tools including: C Compilers, Macro Assemblers, Program
Debugger/Simulators, In-Circuit Emulators, and Evaluation kits.
ATmega169A/PA/329A/PA/649A/P/3290A/PA/6490A/P [DATASHEET SUMMARY]
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8284FS–AVR–07/2014