ATTINY2313A-SU

The ATTINY2313A-SU from Microchip Technology is a low-cost, high-performance 8-bit AVR microcontroller that delivers an excellent balance of features, power efficiency, and packaging flexibility. Built on the AVR enhanced RISC architecture with 120 powerful instructions (most executing in a single clock cycle), it achieves 20 MIPS of throughput at 20MHz operating frequency. The device integrates 2KB of in-system self-programmable Flash memory, 128 bytes of EEPROM (rated for 100,000 write cycles), and 128 bytes of internal SRAM. The peripheral set includes an 8-bit timer/counter, a 16-bit timer/counter with input capture and PWM, a full duplex USART, and a Universal Serial Interface (USI) that can be configured for SPI or TWI operation. An on-chip analog comparator with multiplexed inputs provides analog signal monitoring capability. The internal calibrated 8MHz RC oscillator eliminates the need for external crystal components in many applications, while still supporting external crystal/ceramic resonator and external clock inputs. The debugWIRE on-chip debug system enables in-circuit programming and debugging through a single I/O pin, reducing development time and cost. Operating from 1.8V to 5.5V with multiple power-saving modes, the ATtiny2313A is well-suited for battery-powered and low-power applications. With its 20-pin SOIC package and -40°C to +85°C temperature range, this tinyAVR device serves a broad range of applications including industrial control, automotive body electronics, consumer appliances, LED lighting, and battery management systems.

The ATtiny2313A is based on the AVR Harvard architecture, which features separate memory buses for program and data, allowing instruction fetch and operand access to occur in parallel (pipelined). During a single clock cycle, one instruction is fetched from program memory while the previous instruction is executing, resulting in nearly one instruction per clock cycle execution. The 32 general-purpose working registers are directly connected to the ALU, enabling fast access and single-cycle arithmetic operations. The Flash memory is in-system programmable through the SPI interface, allowing firmware updates without removing the device from the target board. The EEPROM provides non-volatile data storage for configuration parameters and calibration data, with a separate address space and independent write/erase controller. The two timer/counter modules (8-bit and 16-bit) support multiple operating modes including normal counting, Clear Timer on Compare Match (CTC), and Pulse Width Modulation (PWM) for motor control, LED dimming, and timing applications. The USART provides full-duplex asynchronous serial communication, while the USI module can be configured for SPI or two-wire serial communication. The analog comparator compares voltages on the AIN0 and AIN1 pins and can generate interrupts or trigger timer events based on the comparison result. Power management is handled through multiple sleep modes (Idle, ADC Noise Reduction, Power-down, and Standby), allowing significant power savings by disabling unused peripherals and clock domains.

• Industrial Sensor Interfaces: Serves as a low-cost controller for temperature, pressure, and proximity sensors with USART/SPI communication and analog comparator for signal monitoring
• LED Lighting Control: Implements PWM-based dimming and color control for LED lighting systems, including RGB LEDs and LED strips
• Motor and Fan Control: Provides speed control for small DC motors, cooling fans, and brushless motor commutation using PWM and timer peripherals
• Automotive Body Electronics: Used in door modules, mirror control, seat adjustment, and small motor control applications in automotive systems
• Battery-Powered Devices: Excellent for battery-operated sensors, remote controls, and wearable devices due to low power consumption and multiple sleep modes
• Keypad Controllers: Manages matrix keypads and user interface inputs with pin change interrupts and low-power wake-up capability
• Smart Sensors/IoT: Forms the intelligence in small IoT sensor nodes and smart sensor modules with wireless connectivity
• Power Management: Implements battery charging control, power supply sequencing, and monitoring functions in portable and embedded systems