MICROCHIP ATTINY861-20SU

ATtiny261/461/861 are low-power CMOS 8-bit microcontrollers based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATtiny261/461/861 achieves throughputs approaching 1 MIPS 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 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 ATtiny261/461/861 provides the following features: 2/4/8K byte of In-System Programmable Flash, 128/256/512 bytes EEPROM, 128/256/512 bytes SRAM, 16 general purpose I/O lines, 32 general purpose working registers, an 8-bit Timer/Counter with compare modes, an 8-bit high speed Timer/Counter, a Universal Serial Interface, Internal and External Interrupts, an 11-channel, 10-bit ADC, a programmable Watchdog Timer with internal oscillator, and four software selectable power saving modes. Idle mode stops the CPU while allowing the SRAM, Timer/Counter, ADC, Analog Comparator, and Interrupt system to continue functioning. Powerdown mode saves the register contents, disabling all chip functions until the next Interrupt or Hardware Reset. ADC Noise Reduction mode stops the CPU and all I/O modules except 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, allowing very fast start-up combined with low power consumption.

The device is manufactured using Atmel’s 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 ATtiny261/461/861 AVR is supported by a full suite of program and system development tools including: C Compilers, Macro Assemblers, Program Debugger/Simulators, 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 • Endurance: 10,000 Write/Erase Cycles – 128/256/512 Bytes In-System Programmable EEPROM • Endurance: 100,000 Write/Erase Cycles – 128/256/512 Bytes Internal SRAM – Data retention: 20 years at 85℃ / 100 years at 25℃ – Programming Lock for Self-Programming Flash Program & EEPROM Data Security
• Peripheral Features – 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 – 10-bit ADC • 11 Single-Ended Channels • 16 Differential ADC Channel Pairs • 15 Differential ADC Channel Pairs with Programmable Gain (1x, 8x, 20x, 32x) – On-chip Analog Comparator – Programmable Watchdog Timer with Separate On-chip Oscillator – Universal Serial Interface with Start Condition Detector
• Special Microcontroller Features – debugWIRE On-chip Debug System – In-System Programmable via SPI Port – External and Internal Interrupt Sources – Low Power Idle, ADC Noise Reduction, Standby and Power-Down Modes – Enhanced Power-on Reset Circuit – Programmable Brown-out Detection Circuit – Internal Calibrated Oscillator – On-chip Temperature Sensor
• I/O and Packages – 16 Programmable I/O Lines – Available in 20-pin PDIP, 20-pin SOIC and 32-pad MLF
• Operating Voltage: – 1.8 – 5.5V for ATtiny261V/461V/861V – 2.7 – 5.5V for ATtiny261/461/861
• Speed Grade: – ATtiny261V/461V/861V: 0 – 4 MHz @ 1.8 – 5.5V, 0 – 10 MHz @ 2.7 – 5.5V – ATtiny261/461/861: 0 – 10 MHz @ 2.7 – 5.5V, 0 – 20 MHz @ 4.5 – 5.5V
• Industrial Temperature Range
• Low Power Consumption – Active Mode (1 MHz System Clock): 300 μA @ 1.8V – Power-Down Mode: 0.1 μA at 1.8V