ATMEGA16A-AU R
Manufacturer Name: Microchip
Category(s): 8 Bit Microcontrollers
Description:
The Microchip 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 ATmega16A provides the following features: 16Kbytes of In-System Programmable Flash Program memory with Read-While-Write capabilities; 512bytes EEPROM; 1Kbyte 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 with optional differential input stage with programmable gain (TQFP package only); 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 USART; Two-wire interface; A/D Converter; 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 External Interrupt or Hardware 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 crystal/resonator Oscillator is running while the rest of the device is sleeping. This allows very fast start-up combined with lowpower consumption. In Extended Standby mode, both the main Oscillator and the Asynchronous Timer continue to run.
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672
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