ATMEGA48V-10MMUR - AVR 8-bit MCU 4KB Flash 10MHz | Microchip
MPN: ATMEGA48V-10MMUR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.89 | $0.89 |
| 10 | $0.84 | $8.40 |
| 100 | $0.78 | $78.00 |
| 500 | $0.71 | $355.00 |
| 1,000 | $0.65 | $650.00 |
ATMEGA48V-10MMUR Overview
An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that executes most of its 131 powerful instructions in a single clock cycle. MCUs of this class sit at the entry level of the 8-bit microcontroller hierarchy (microcontroller -> embedded processor -> semiconductor), combining CPU, program Flash, data SRAM, non-volatile EEPROM, peripherals, and I/O on one die, making them the workhorse of cost-sensitive embedded designs.
Key features include the AVR Advanced RISC architecture with 32 general-purpose 8-bit registers, an 8-channel 10-bit ADC, an on-chip debugWIRE debug system, and In-Circuit Serial Programming (ICSP) via two I/O pins plus the reset line. The V suffix denotes the extended 1.8V to 5.5V low-voltage operating range, and the MMUR suffix denotes the 28-VQFN surface-mount package supplied in Tape and Reel for automated assembly.
The die integrates hardware peripherals including three timers (two 8-bit and one 16-bit), a programmable serial USART, SPI master/slave interface, two-wire (I2C-compatible) interface, analog comparator, and watchdog timer with separate on-chip oscillator. Self-programming Flash supports bootloader firmware updates in the field.
Typical applications include consumer appliance control, battery-powered sensor nodes where the low 1.8V floor and low-power modes extend battery life, and industrial auxiliary boards requiring small 4x4 mm footprint and reliable surface-mount assembly.
When designing with this part, budget for its 10 MHz maximum clock (up to 20 MHz is available in the ATMEGA48PA variant family) and provide decoupling on both VCC and AVCC pins for optimal ADC accuracy.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for ATMEGA48V-10MMUR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ATMEGA48V-10MMUR (same form factor and footprint) — differing in Package, RoHS Status, Flash Memory, Operating Temperature, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATMEGA48PV-10MUR
✅ Drop-In✓ In Stock
$0.85 / Unit
View Datasheet →ATMEGA48PA-MUR
✅ Drop-In✓ In Stock
$0.98 / Unit
View Datasheet →ATMEGA48V-10MMU
✅ Drop-In✓ In Stock
$1.39 / Unit
View Datasheet →ATMEGA48PA-MMNR
✅ Drop-In✓ In Stock
$1.33 / Unit
View Datasheet →ATMEGA48PV-10MMU
✅ Drop-In✓ In Stock
$0.71 / Unit
View Datasheet →ATMEGA48V-10MMUR Maximum Ratings & Electrical Characteristics
| Core Processor | AVR |
| Core Size | 8-Bit |
| Series | AVR ATmega |
| Maximum Clock Frequency | 10 MHz |
| Program Memory Type | Flash |
| Program Memory Size | 4KB (2K x 16) |
| SRAM Size | 512B (512 x 8) |
| EEPROM Size | 256B |
| Supply Voltage Range | 1.8V to 5.5V |
| Number of I/O | 23 |
| ADC Resolution | 10-bit |
| ADC Channels | 8 |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Communication Interfaces | SPI, I2C (Two-Wire), USART |
| Timers | 2 x 8-bit, 1 x 16-bit |
| On-Chip Debug | debugWIRE |
| Package | 28-VQFN (4x4 mm), 0.45 mm pitch |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant (green package) |
ATMEGA48V-10MMUR Pin Configuration
| Pin 1 | GND — Ground |
| Pin 2 | VCC — Digital supply voltage |
| Pin 3 | PD3 — Port D bit 3 (PCINT19/INT1/OC2B/AIN1) |
| Pin 4 | PD4 — Port D bit 4 (PCINT20/XCK/T0) |
| Pin 5 | GND — Ground |
| Pin 6 | VCC — Digital supply voltage |
| Pin 7 | PB6 — Port B bit 6 (PCINT6/XTAL1/TOSC1) - crystal input or I/O |
| Pin 8 | PB7 — Port B bit 7 (PCINT7/XTAL2/TOSC2) - crystal output or I/O |
| Pin 9 | PD5 — Port D bit 5 (PCINT21/OC0B/T1) |
| Pin 10 | PD6 — Port D bit 6 (PCINT22/OC0A/AIN0) |
| Pin 11 | PD7 — Port D bit 7 (PCINT23/AIN1) |
| Pin 12 | PB0 — Port B bit 0 (PCINT8/CLKO/ICP1) |
| Pin 13 | PB1 — Port B bit 1 (PCINT9/OC1A) |
| Pin 14 | PB2 — Port B bit 2 (PCINT10/OC1B/SS) |
| Pin 15 | PB3 — Port B bit 3 (PCINT11/OC2A/MOSI) |
| Pin 16 | PB4 — Port B bit 4 (PCINT12/MISO) |
| Pin 17 | PB5 — Port B bit 5 (PCINT13/SCK) |
| Pin 18 | AVCC — ADC supply voltage |
| Pin 19 | AREF — ADC analog reference |
| Pin 20 | GND — Ground |
| Pin 21 | PC0 — Port C bit 0 (PCINT14/ADC0) |
| Pin 22 | PC1 — Port C bit 1 (PCINT15/ADC1) |
| Pin 23 | PC2 — Port C bit 2 (ADC2) |
| Pin 24 | PC3 — Port C bit 3 (ADC3) |
| Pin 25 | PC4 — Port C bit 4 (ADC4/SDA) |
| Pin 26 | PC5 — Port C bit 5 (ADC5/SCL) |
| Pin 27 | PC6 — Port C bit 6 (PCINT14/RESET) - active-low reset |
| Pin 28 | PD0 — Port D bit 0 (PCINT16/RXD) |
Typical Applications
ATMEGA48V-10MMUR is suitable for 6 applications: Battery-Powered Sensor Nodes, Consumer Appliance Control, Industrial Auxiliary Boards, Handheld and Portable Instruments, IoT Edge Sensor Modules, Automotive Body Sub-Modules (Non-Safety).
Battery-Powered Sensor Nodes
The ATMEGA48V-10MMUR fits battery-powered sensor nodes because its 1.8V floor allows direct operation from two alkaline cells or a single Li-Ion cell without a boost converter, saving board area and quiescent budget. The 8-channel 10-bit ADC digitizes analog sensors such as temperature, humidity, or light directly, and the 512B SRAM plus 256B EEPROM retain calibration constants and last-known state through power cycles. In a typical topology the MCU sleeps with the watchdog running and wakes on a timer or external interrupt to sample, then transmits a short SPI or I2C frame to a radio module. Because switching between the V and PA variants requires no PCB change, designers can prototype with this part and trade up to picoPower silicon if battery-life testing shows current headroom is insufficient.
Recommended
Consumer Appliance Control
In consumer appliance control boards such as coffee makers, fans, and small heaters, the ATMEGA48V-10MMUR provides the entry-level balance of cost and capability. Its 23 I/O lines drive relays, LEDs, and seven-segment displays directly, while hardware PWM from the 16-bit timer adjusts motor speed or heater duty cycle without CPU overhead. The 10 MHz clock delivers 10 MIPS, sufficient for scanning a keypad, updating a display, and running a simple control loop in the same loop cycle. The 4x4 mm VQFN conserves PCB area on single-sided cost-optimized boards, and the on-chip brown-out detector plus watchdog timer provide the reset robustness required for mains-derived noisy supplies. Field firmware updates are handled through the self-programming Flash bootloader over UART.
Recommended
Industrial Auxiliary Boards
Industrial auxiliary boards such as sensor terminators, setpoint translators, and small HMI interfaces benefit from the ATMEGA48V-10MMUR's USART, SPI, and two-wire interfaces, which let it bridge MODBUS-style RS-485 front ends or I2C sensor clusters to plant PLCs. The industrial-grade supply range of 1.8V to 5.5V tolerates regulator droop during brown-out events, and the watchdog timer with its own on-chip oscillator recovers firmware from transients without external components. The debugWIRE single-wire debug interface simplifies on-board diagnostics during production line bring-up using only the reset line. With 4KB Flash, protocol parsers and CRC routines fit comfortably, and the 256B EEPROM stores unit IDs and calibration offsets that must survive power loss and panel swaps.
Recommended
Handheld and Portable Instruments
For handheld instruments such as multimeters, environment meters, and portable testers, the ATMEGA48V-10MMUR operates directly from a 3V coin cell or two AAA cells at 1.8V, eliminating level-shifting between the MCU and the analog front end. The 8-channel 10-bit ADC samples battery voltage, user-adjust pots, and measurement inputs, while the analog comparator supports zero-cross or threshold detection with sub-microsecond response. The 4x4 mm 28-VQFN package keeps the controller footprint small on dense handheld PCBs. Sleep modes with watchdog wake allow multi-month battery runtimes when the display is refreshed only on user interaction. Designers should keep the 10 MHz clock budget in mind for compute-heavy display drivers, or switch to the pin-compatible ATMEGA48PA-MUR for 20 MHz headroom.
Recommended
IoT Edge Sensor Modules
As an IoT edge sensor module controller, the ATMEGA48V-10MMUR handles local measurement and formatting while delegating radio work to a companion module. The SPI master interface connects to sub-GHz or 2.4 GHz transceivers, and the two-wire interface reads I2C environmental sensors, keeping the bill of materials to two ICs plus passives. The MCU's 512B SRAM is adequate for buffering short encrypted telemetry frames, and the 256B EEPROM stores device identity and network keys across resets and battery swaps. The 1.8V minimum supply matches modern low-voltage sensor rails, allowing a single shared rail for the entire node. Low-cost Tape and Reel packaging supports high-volume automated assembly typical of IoT module manufacturing, with the same footprint upgrade path to larger Flash parts.
Recommended
Automotive Body Sub-Modules (Non-Safety)
For non-safety automotive body sub-modules such as seat-memory switches, ambient light controllers, and accessory relay drivers, the ATMEGA48V-10MMUR's wide 1.8V to 5.5V supply range rides through load-dump-protected 5V rails, and its brown-out detector guarantees clean resets during crank transients. The 16-bit timer generates PWM for LED dimming with flicker-free resolution, and the 10-bit ADC reads feedback from potentiometer position sensors for memory-seat positioning. The on-chip watchdog and POR remove external supervisor ICs, reducing cost on high-volume harness-mounted boards. Note that this commercial-grade part is not AEC-Q100 qualified; for temperature-critical zones verify the operating temperature requirement or select an automotive-qualified Microchip alternative before release.
Recommended
Recommended Products Summary
Engineering reference data for ATMEGA48V-10MMUR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATMEGA48PV-10MUR | ATMEGA48PA-MUR | ATMEGA48V-10MMU | ATMEGA48PA-MMNR |
|---|---|---|---|---|---|
| Package | 28-VQFN (4x4 mm) | 28-VQFN (4x4 mm) - same | 28-VQFN (4x4 mm) - same | 28-VQFN (4x4 mm) - same | 28-VQFN (4x4 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash / SRAM / EEPROM | 4KB / 512B / 256B | 4KB / 512B / 256B | 4KB / 512B / 256B | 4KB / 512B / 256B | 4KB / 512B / 256B |
| Supply Voltage | 1.8V - 5.5V | 1.8V - 5.5V | 1.8V - 5.5V | 1.8V - 5.5V | 1.8V - 5.5V |
| Max Clock Frequency | 10 MHz | 20 MHz at 4.5V-5.5V; 10 MHz at 1.8V-5.5V | 20 MHz at 1.8V-5.5V | 10 MHz | 20 MHz at 1.8V-5.5V |
| Low-Power Technology | Standard low-power AVR | Standard (P process) | picoPower (lowest sleep current) | Standard low-power AVR | picoPower |
| On-Chip Debug | debugWIRE | debugWIRE | debugWIRE | debugWIRE | debugWIRE |
Key Differentiators
- Lowest-cost entry point in the 28-VQFN ATmega family (vs ATMEGA48PA-MUR)
- Same footprint with 2x clock upgrade path (vs ATMEGA48PV-10MUR)
- Wide 1.8V-5.5V operation without boost converter (vs ATMEGA48-20AU (standard 20 MHz variant))
Design Notes
Decouple both VCC (pins 2, 6) and AVCC (pin 18) with 100 nF ceramic capacitors placed within 2 mm of each pin, plus a 4.7 uF to 10 uF bulk capacitor near the IC. AVCC must be connected to VCC even if the ADC is unused, and should be filtered through an LC network (10 uH + 100 nF) when ADC accuracy matters in noisy environments. Estimated: at 10 MHz and 5V, active current is in the several-mA range per the family datasheet, so regulator selection is driven by peripherals rather than the MCU itself.
The 28-VQFN 4x4 mm package uses a center die pad that should be soldered to a grounded PCB thermal pad with an array of vias (typically 3x3) for mechanical reliability and heat dissipation. Keep the crystal (if used on PB6/PB7) within 5 mm of the pins with 20 pF load capacitors per the crystal datasheet. Route the RESET (PC6) trace away from switching loads; a 10 kOhm pull-up to VCC is recommended for noise immunity, and debugWIRE shares this pin, so allow a series resistor footprint for debug-to-ICSP conversion.
Do not exceed 10 MHz on this V-variant die: the 10 MHz rating is the hard maximum, unlike the PA/PV variants rated to 20 MHz. Enabling debugWIRE permanently disables ISP until cleared by a debug tool - plan the recovery flow before programming. When using PC6 as RESET, an external pull-up is mandatory for reliable operation; leaving it floating causes spurious resets. Migration to ATMEGA48PA-MUR requires re-verifying fuse settings, since default fuse values differ between generations.
Compliance Information
Green package per distributor datasheet summary (GREEN, PLASTIC, 4x4 mm, 1 mm height, 0.45 mm pitch). AEC-Q100 qualification not indicated for this commercial part.
