ATMEGA48A-MMHR
- Mfr.Part #
- ATMEGA48A-MMHR
- Manufacturer
- Microchip Technology
- Package / Case
- 28-VFQFN Exposed Pad
- Datasheet
- Download
- Description
- IC MCU 8BIT 4KB FLASH 28VQFN
- Stock
- 5,167
- In Stock :
- 5,167
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- Manufacturer :
- Microchip Technology
- Product Category :
- Microcontrollers
- Product Type :
- 8-bit Microcontrollers - MCU
- JESD-30 Code :
- S-PQCC-N28
- Voltage - Supply (Vcc/Vdd) :
- 1.8V~5.5V
- Package Shape :
- Square
- Data Converter :
- A/D 8x10b
- Core Processor :
- AVR
- Height Seated (Max) :
- 1mm
- Number of Pins :
- 28
- Mounting Style :
- SMD/SMT
- CPU Family :
- AVR RISC
- Supply Voltage-Max (Vsup) :
- 5.5V
- RAM (bytes) :
- 512
- Core Size :
- 8-Bit
- Operating Temperature :
- -40°C~85°C TA
- Temperature Grade :
- Industrial
- Mounting Type :
- Surface Mount
- Interface :
- I2C, SPI, UART, USART
- uPs/uCs/Peripheral ICs Type :
- MICROCONTROLLER, RISC
- Product :
- MCU
- Speed :
- 20MHz
- Reach Compliance Code :
- Compliant
- Number of I/O :
- 23
- Program Memory Size :
- 4KB 2K x 16
- Published :
- 1997
- Pbfree Code :
- yes
- Data Bus Width :
- 8B
- Brand :
- Microchip Technology / Atmel
- Supplier Device Package :
- 28-VQFN (4x4)
- Qualification Status :
- Not Qualified
- PWM Channels :
- yes
- Supply Current-Max :
- 12 mA
- Terminal Form :
- NO LEAD
- Watchdog Timer :
- yes
- RAM Size :
- 512 x 8
- Supply Voltage :
- 5V
- ROM Programmability :
- Flash
- Terminal Finish :
- Nickel/Palladium/Gold (Ni/Pd/Au)
- Additional Feature :
- ALSO OPERATES AT 2.7 V MINIMUM SUPPLY AT 10 MHZ AND 1.8 V MINIMUM SUPPLY AT 4 MHZ
- Base Product Number :
- ATMEGA48
- Supply Voltage-Min (Vsup) :
- 4.5V
- DAC Channels :
- No
- Manufacturer :
- Microchip
- Tradename :
- AVR
- Peripherals :
- Brown-out Detect/Reset, POR, PWM, WDT
- Contact Plating :
- Tin
- Oscillator Type :
- Internal
- Factory Lead Time :
- 17 Weeks
- Number of Timers/Counters :
- 3
- Length :
- 4mm
- Maximum Operating Temperature :
- + 85 C
- Seated Height-Max :
- 1 mm
- Terminal Pitch :
- 0.45mm
- RoHS :
- Details
- Surface Mount :
- yes
- Program Memory Type :
- Flash
- EEPROM Size :
- 256 x 8
- Width :
- 4 mm
- Bit Size :
- 8
- Has ADC :
- yes
- DMA Channels :
- No
- Base Part Number :
- ATMEGA48A
- Packaging :
- Tape and Reel (TR)
- Number of Terminations :
- 28
- Number of I/O Lines :
- 23
- Terminal Position :
- QUAD
- Product Category :
- 8-bit Microcontrollers - MCU
- Mount :
- Surface Mount
- Package / Case :
- 28-VFQFN Exposed Pad
- Product Status :
- Active
- Minimum Operating Temperature :
- - 40 C
- JESD-609 Code :
- e4
- Power Supplies :
- 2/5V
- Number of I/Os :
- 23 I/O
- Series :
- AVR® ATmega
- Device Core :
- AVR
- Interfaces :
- SPI/USART
- Moisture Sensitivity Level (MSL) :
- 3 (168 Hours)
- ROM (words) :
- 2048
- Frequency :
- 20MHz
- Data Converters :
- A/D 8x10b
- RoHS Status :
- ROHS3 Compliant
- Memory Size :
- 4kB
- Connectivity :
- I2C, SPI, UART/USART
- Number of Terminals :
- 28
- Package :
- Tape and Reel (TR);Cut Tape (CT);Digi-Reel®;
- Datasheets
- ATMEGA48A-MMHR
ATMEGA48A-MMHR Documents

Microcontrollers Microchip Technology ATMEGA48A-MMHR Overview
The Microcontrollers Microchip Technology ATMEGA48A-MMHR is a high-performance, low-power Atmel 8-bit AVR RISC-based microcontroller that combines 4KB ISP flash memory with read-while-write capabilities, 512B EEPROM, 512B SRAM, 23 general purpose I/O lines, 32 general purpose working registers, three flexible timer/counters, and various other features. This microcontroller is designed to offer significant flexibility and efficiency in embedded systems, making it an ideal choice for project developments requiring programmable intelligence and connectivity. It operates between 1.8-5.5 volts, enabling its use in applications sensitive to power consumption.
ATMEGA48A-MMHR Features
The ATMEGA48A-MMHR offers a wide range of features designed to support complex digital control systems. These include an advanced RISC architecture, real-time counter with separate oscillator, two 8-bit timers/counters with separate prescaler and compare mode, one 16-bit timer/counter with input capture, PWM channel, and various programmable serial USART, SPI serial interface, and I2C compatible modes. The device also supports external and internal interrupt sources, enhancing its utility in system management and control tasks.
ATMEGA48A-MMHR Applications
- Consumer Electronics: Used in devices such as smart appliances and entertainment systems, where the ATMEGA48A-MMHR's low power consumption and advanced control capabilities allow for efficient and intelligent device management.
- Automotive: Integrates into automotive subsystems for engine management and infotainment systems, providing robust operation in environments that demand high reliability and resilience.
- Industrial Automation: Utilized in process control and automation equipment, enabling precise control and monitoring through its rich set of I/O capabilities and robust timer functions.
- IoT Devices: Forms the core of many Internet of Things devices, supporting connected functionalities with its extensive communication interface options, essential for smart home and industrial applications.
- Wearable Technology: Powers wearable devices, offering the necessary computational power and connectivity in a power-efficient package suitable for small, battery-operated wearables.
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