ATTINY24A-MUR 8-Bit AVR Microcontroller with 2KB Flash 12MHz Speed 128B EEPROM 12 I/O Pins 1.8V-5.5V Operation -40°C to +85°C & Ultra-Low Power for Compact Designs

ATTINY24A-MUR 8-Bit AVR Microcontroller with 2KB Flash 12MHz Speed 128B EEPROM 12 I/O Pins 1.8V-5.5V Operation -40°C to +85°C & Ultra-Low Power for Compact Designs

Features

• High Performance, Low Power AVR® 8-bit Microcontroller

• Advanced RISC Architecture

– 120 Powerful Instructions

– Most Single Clock Cycle Execution

– 32 x 8 General Purpose Working Registers

– Fully Static Operation

• High Endurance, Non-volatile Memory Segments

– 2K/4K/8K Bytes of In-System, Self-programmable Flash Program Memory

• Endurance: 10,000 Write/Erase Cycles

– 128/256/512 Bytes of In-System Programmable EEPROM

• Endurance: 100,000 Write/Erase Cycles

– 128/256/512 Bytes of Internal SRAM

– Data Retention: 20 years at 85°C / 100 years at 25°C

– Programming Lock for Self-programming Flash & EEPROM Data Security

• Peripheral Features

– One 8-bit and One 16-bit Timer/Counter with Two PWM Channels, Each

– 10-bit ADC

• 8 Single-ended Channels

• 12 Differential ADC Channel Pairs with Programmable Gain (1x / 20x)

– Programmable Watchdog Timer with Separate On-chip Oscillator

– On-chip Analog Comparator

– Universal Serial Interface

• Special Microcontroller Features

– debugWIRE On-chip Debug System

– In-System Programmable via SPI Port

– Internal and External Interrupt Sources

• Pin Change Interrupt on 12 Pins

– Low Power Idle, ADC Noise Reduction, Standby and Power-down Modes

– Enhanced Power-on Reset Circuit

– Programmable Brown-out Detection Circuit with Software Disable Function

– Internal Calibrated Oscillator

– On-chip Temperature Sensor

• I/O and Packages

– Available in 20-pin QFN/MLF/VQFN, 14-pin SOIC, 14-pin PDIP and 15-ball UFBGA

– Twelve Programmable I/O Lines

• Operating Voltage:

– 1.8 – 5.5V

• Speed Grade:

– 0 – 4 MHz @ 1.8 – 5.5V

– 0 – 10 MHz @ 2.7 – 5.5V

– 0 – 20 MHz @ 4.5 – 5.5V

• Industrial Temperature Range: -40°C to +85°C

• Low Power Consumption

– Active Mode:

• 210 µA at 1.8V and 1 MHz

– Idle Mode:

• 33 µA at 1.8V and 1 MHz

– Power-down Mode:

• 0.1 µA at 1.8V and 25°C

Applications

1. Consumer Electronics & Smart Home

• Remote controls, keyboards, LED controllers

• Small household appliances (e.g., coffee makers, fans)

• Smart sensor nodes (temperature/humidity monitoring)

2. Industrial Control & Automation

• Small motor control (stepper/DC motor PWM driving)

• Industrial sensor signal acquisition and processing

• Low-complexity PLC or HMI interface control

3. IoT & Wireless Devices

• Battery-powered wireless sensors (Zigbee/Bluetooth module auxiliary control)

• Low-power data loggers (using EEPROM for storage)

4. Automotive Electronics & Peripherals

• In-car accessories (LED ambient lighting control, simple switch detection)

• Aftermarket automotive electronics (OBD adapter support MCU)

5. Portable & Battery-Powered Devices

• Electronic toys, small handheld devices

• Solar/Wi-Fi sensor nodes (utilizing 1.8V ultra-low voltage support)

Descriptions

Port B is a 4-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port B output buffers have symmetrical drive characteristics with both high sink and source capability except PB3 which has the RESET capability. To use pin PB3 as an I/O pin, instead of RESET pin, program (‘0’) RSTDISBL fuse. As inputs, Port B pins that are externally pulled low will source current if the pull-up resistors are activated. The Port B pins are tri-stated when a reset condition becomes active, even if the clock is not running.

Reset input. A low level on this pin for longer than the minimum pulse length will generate a reset, even if the clock is not running and provided the reset pin has not been disabled. The min imum pulse length is given in Table 20-4 on page 176. Shorter pulses are not guaranteed to generate a reset.

Port A is a 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port A output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port A pins that are externally pulled low will source current if the pull-up resistors are activated. The Port A pins are tri-stated when a reset condition becomes active, even if the clock is not running.

INFORMATION

Drawing

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