Description
The Atmel ATmega329/3290/649/6490 provides the following features: 32/64K bytes of In-System Programmable Flash with Read-While-Write capabilities, 1/2K bytes EEPROM, 2/4K 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 crystal/resonator Oscillator is running while the rest of the device is sleeping. This allows very fast start-up combined with low-power consumption.
Specifications: | |
Attribute | Value |
Category | Integrated Circuits (ICs) |
Embedded - Microcontrollers | |
Mfr | Microchip Technology |
Series | AVR® ATmega |
Package | Tape & Reel (TR) |
Cut Tape (CT) | |
Digi-Reel® | |
Part Status | Active |
Core Processor | AVR |
Core Size | 8-Bit |
Speed | 8MHz |
Connectivity | SPI, UART/USART, USI |
Peripherals | Brown-out Detect/Reset, LCD, POR, PWM, WDT |
Number of I/O | 53 |
Program Memory Size | 64KB (32K x 16) |
Program Memory Type | FLASH |
EEPROM Size | 2K x 8 |
RAM Size | 4K x 8 |
Voltage - Supply (Vcc/Vdd) | 1.8V ~ 5.5V |
Data Converters | A/D 8x10b |
Oscillator Type | Internal |
Operating Temperature | -40°C ~ 85°C (TA) |
Mounting Type | Surface Mount |
Package / Case | 64-TQFP |
Supplier Device Package | 64-TQFP (14x14) |
Base Product Number | ATMEGA649 |