MICROCHIP ATTINY261A-MNR

The Atmel ATtiny261/461/861 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the Atmel ATtiny261/461/861 achieves throughputs approaching 1MIPS per MHz allowing the system designer to optimize power consumption versus processing speed. 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 Atmel ATtiny261/461/861 provides the following features: 2/4/8Kbyte of in-system programmable flash, 128/256/512 bytes EEPROM, 128/256/512 bytes SRAM, 6 general purpose I/O lines, 32 general purpose working registers, one 8-bit Timer/Counter with compare modes, one 8-bit high speed Timer/Counter, universal serial interface, internal and external interrupts, a 4-channel, 10-bit ADC, a programmable watchdog timer with internal oscillator, and three software selectable power saving modes. The idle mode stops the CPU while allowing the SRAM, Timer/Counter, ADC, analog comparator, and interrupt system to continue functioning. The power-down mode saves the register contents, disabling all chip functions until the next interrupt or hardware reset. The ADC noise reduction mode stops the CPU and all I/O modules except ADC, to minimize switching noise during ADC conversions. The device is manufactured using Atmel 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 code running on the AVR core. The Atmel ATtiny261/461/861 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.

• High performance, low power AVR 8-Bit microcontroller
• Advanced RISC architecture
  • 123 powerful instructions – most single clock cycle execution
  • 32x8 general purpose working registers
  • Fully static operation
• Non-volatile program and data memories
  • 2/4/8K byte of in-system programmable program memory flash (ATtiny261/461/861)
  • Endurance: 10,000 write/erase cycles
  • 128/256/512 bytes in-system programmable EEPROM (ATtiny261/461/861)
  • Endurance: 100,000 write/erase cycles
  • 128/256/512 bytes internal SRAM (ATtiny261/461/861)
  • Programming lock for self-programming flash program and EEPROM data security
• 8/16-bit Timer/Counter with prescaler
• 8/10-bit high speed Timer/Counter with separate prescaler
• 3 high frequency PWM outputs with separate output compare registers
• Programmable dead time generator
• Universal serial interface with start condition detector
• 10-bit ADC
  • 11 single ended channels
  • 16 differential ADC channel pairs
  • 15 differential ADC channel pairs with programmable gain (1x, 8x, 20x, 32x)
• Programmable watchdog timer with separate on-chip oscillator
• On-chip analog comparator
• debugWIRE on-chip debug system
• In-system programmable via SPI port
• External and internal interrupt sources
• Low power idle, ADC noise reduction, and power-down modes
• Enhanced power-on reset circuit
• Programmable brown-out detection circuit
• Internal calibrated oscillator
• 16 programmable I/O lines
• 20-pin SOIC, 32-pad MLF and 20-lead TSSOP
• Operating voltage: 2.7 - 5.5V for ATtiny261/461/861
• Speed grade: ATtiny261/461/861: 0 - 8MHz at 2.7 - 5.5V, 0 - 16MHz at 4.5 - 5.5V
• Operating temperature: Automotive -40℃ to +125℃
• Low power consumption
  • Active mode ATD On: 1MHz, 2.7V, 25℃: 300μA
  • Power-down mode no watchdog: 2.7V, 25℃: 0.12μA