Microchip Technology ATMEGA48-20MMH
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $8.28 | $8.28 |
| 15+ | $1.90 | $28.50 |
| 25+ | $1.86 | $46.50 |
| 50+ | $1.76 | $88.00 |
| 100+ | $1.55 | $155.00 |
| N+ | $0.31 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Microchip Technology |
| Product Series | AVR® ATmega |
| Packaging | Tray | NULL |
| Core Processor | AVR |
| Core Size | 8-Bit |
| Speed | 20MHz |
| Connectivity | I2C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Number of I/O | 23 |
| Program Memory Size | 4KB (2K x 16) |
| Program Memory Type | FLASH |
| EEPROM Size | 256 x 8 |
| RAM Size | 512 x 8 |
| Voltage - Supply (Vcc/Vdd) | 2.7V ~ 5.5V |
| Data Converters | A/D 8x10b |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification AEC | - |
| Mounting Type | Surface Mount |
| Supplier Device Package | 28-VQFN (4x4) |
| Package / Case | 28-VFQFN Exposed Pad |
| ROHS |  |
The Microchip ATMEGA48-20MMH is a high-performance 8-bit AVR microcontroller in a 28-VFQFN package. It features 4KB Flash, 512B SRAM, and operates at up to 20MHz with a voltage range of 2.7V to 5.5V. Integrated peripherals include PWM, Brown-out Detection, Power-on Reset, and Watchdog Timer. This MCU is well-suited for cost-sensitive embedded control applications requiring moderate processing power and small footprint.
- 20MHz AVR Performance: Executes most instructions in a single clock cycle, delivering up to 20 MIPS throughput.
- Low-Voltage Operation (2.7V): Extends battery life in portable devices while maintaining 5V compatibility.
- Compact 28-VFQFN Package: Saves PCB space with a 4x4mm footprint and exposed pad for better heat dissipation.
- Rich Analog Features: Includes 6-channel 10-bit ADC for direct sensor interfacing without external components.
Consumer Electronics Remote Controls
The 20MHz AVR core and 4KB Flash are sufficient for IR protocol encoding, while the 2.7V minimum voltage allows operation from two AA batteries.
Sensor Nodes for IoT
With 512B SRAM and multiple sleep modes, it can periodically read temperature/humidity sensors and transmit data over RF modules with minimal power draw.
Motor Speed Controllers
Use the PWM channels to drive small DC motors in toys or pumps, with the Brown-out Detector preventing erratic behavior during low battery.
LED Matrix Displays
The 28-pin package provides enough I/O to drive an 8x8 LED matrix with multiplexing, while the 20MHz speed ensures flicker-free refresh rates.
Battery Chargers
Monitor charge current and voltage with the built-in ADC, and control the charging profile using PWM, all within a compact VFQFN footprint.
Simple Data Loggers
Combine the 4KB Flash for code and external EEPROM for data, using the WDT to recover from software hangs in remote logging stations.
- Q: What is the maximum clock speed?
- A: The ATMEGA48-20MMH operates at up to 20MHz.
- Q: What is the supply voltage range?
- A: It runs from 2.7V to 5.5V, compatible with 3.3V and 5V systems.
- Q: How much Flash memory is available?
- A: It has 4KB of Flash (2K x 16) and 512 bytes of SRAM.
- Q: What package does it use?
- A: It comes in a 28-pin VFQFN exposed pad package for improved thermal performance.
- Q: Does it have a watchdog timer?
- A: Yes, it includes a Watchdog Timer with separate on-chip oscillator.
ATMEGA48-20MMH.pdf
- Q: What is the maximum clock speed?
- A: The ATMEGA48-20MMH operates at up to 20MHz.
- Q: What is the supply voltage range?
- A: It runs from 2.7V to 5.5V, compatible with 3.3V and 5V systems.
- Q: How much Flash memory is available?
- A: It has 4KB of Flash (2K x 16) and 512 bytes of SRAM.
- Q: What package does it use?
- A: It comes in a 28-pin VFQFN exposed pad package for improved thermal performance.
- Q: Does it have a watchdog timer?
- A: Yes, it includes a Watchdog Timer with separate on-chip oscillator.
