MICROCHIP ATTINY441-SSUR

ATtiny441/841 is a low-power CMOS 8-bit microcontrollers based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATtiny441/841 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 a single instruction, executed in one clock cycle. The resulting architecture is compact and code efficient while achieving throughputs up to ten times faster than conventional CISC microcontrollers.

ATtiny441/841 provides the following features:

• 4K/8K bytes of in-system programmable Flash
• 256/512 bytes of SRAM data memory
• 256/512 bytes of EEPROM data memory 12 general purpose I/O lines
• 32 general purpose working registers
• One 8-bit timer/counter with two PWM channels Two 16-bit timer/counters with two PWM channels
• Internal and external interrupts One 10-bit ADC with 5 internal and 12 external channels
• One ultra-low power, programmable watchdog timer with internal oscillator
• Two programmable USARTs with start frame detection
• Slave Two-Wire Interface (TWI)
• Master/slave Serial Peripheral Interface (SPI)
• Calibrated 8MHz oscillator
• Calibrated 32kHz, ultra low power oscillator Four software selectable power saving modes.

The device includes the following modes for saving power:

Idle mode: stops the CPU while allowing the timer/counter, ADC, analog comparator, SPI, TWI, and interrupt system to continue functioning ADC Noise Reduction mode: minimizes switching noise during ADC conversions by stopping the CPU and all I/O modules except the ADC Power-down

• High Performance, Low Power Atmel AVR 8-bit Microcontroller
• Advanced RISC Architecture
• 120 Powerful Instructions – Most Single Clock Cycle Execution
• 32x8 General Purpose Working Registers
• Fully Static Operation
• Up to 16 MIPS Throughput at 16 MHz
• Non-volatile Program and Data Memories
• 4/8K Bytes of In-System Programmable Flash Program Memory
• Endurance: 10,000 Write/Erase Cycles
• 256/512 Bytes of In-System Programmable EEPROM
• Endurance: 100,000 Write/Erase Cycles
• 256/512 Bytes Internal SRAM
• Data Retention: 20 Years at 85℃ / 100 Years at 25℃
• Programming Lock for Self-Programming Flash & EEPROM Data Security
• Peripheral Features
• One 8-bit and Two 16-bit Timer/Counters with Two PWM Channels, Each
• Programmable Ultra Low Power Watchdog Timer
• 10-bit Analog to Digital Converter
• 12 External and 5 Internal, Single-ended Input Channels
• 46 Differential ADC Channel Pairs with Programmable Gain (1x / 20x / 100x)
• Two On-chip Analog Comparators
• Two Full Duplex USARTs with Start Frame Detection
• Master/Slave SPI Serial Interface
• Slave I2C Serial Interface
• Special Microcontroller Features
• Low Power Idle, ADC Noise Reduction, Standby and Power-down Modes
• Enhanced Power-on Reset Circuit
• Programmable Brown-out Detection Circuit with Supply Voltage Sampling
• External and Internal Interrupt Sources
• Pin Change Interrupt on 12 Pins
• Calibrated 8MHz Oscillator with Temperature Calibration Option
• Calibrated 32kHz Ultra Low Power Oscillator
• High-Current Drive Capability on 2 I/O Pins
• I/O and Packages
• 14-pin SOIC, 20-pad MLF/QFN and 20-pad VQFN
• 12 Programmable I/O Lines
• Speed Grade
• 0 – 2 MHz @ 1.7 – 1.8V
• 0 – 4 MHz @ 1.8 – 5.5V
• 0 – 10 MHz @ 2.7 – 5.5V
• 0 – 16 MHz @ 4.5 – 5.5V
• Low Power Consumption
• Active Mode: 0.2 mA at 1.8V and 1MHz
• Idle Mode: 30 μA at 1.8V and 1MHz
• Power-Down Mode (WDT Enabled): 1.3 μA at 1.8V
• Power-Down Mode (WDT Disabled): 150nA at 1.8V