ATMEGA48V-10AUR - 8-Bit AVR MCU 4KB Flash 10MHz | Microchip
MPN: ATMEGA48V-10AUR β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.84 | $2.84 |
| 10 | $2.56 | $25.60 |
| 100 | $2.28 | $228.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.82 | $1,820.00 |
ATMEGA48V-10AUR Overview
An AVR microcontroller is a single-chip computer built on the enhanced RISC architecture, combining program memory, data memory, peripherals and I/O on one die. Within the taxonomy it sits as AVR MCU -> 8-bit microcontroller -> microcontroller -> embedded processor -> semiconductor. The ATmega48V family is the low-voltage variant of the classic ATmega48 line, designed for battery-powered and 1.8 V logic systems where the standard 2.7 V minimum would be too restrictive.
Key differentiators include 1.8 V to 5.5 V operation, 10 MHz maximum clock at 1.8 V, 4 KB Flash with 10,000 write/erase cycles, 256 B EEPROM with 100,000 cycles, and picoPower technology that keeps active current low. The 32-TQFP (7x7) footprint is shared across the ATmega48/88/168 family, so code and layout can scale without PCB changes.
The core executes 131 instructions, most in a single clock cycle, with 32 general-purpose working registers eliminating accumulator bottlenecks. Three flexible timer/counters with compare modes, a programmable watchdog with separate oscillator, an on-chip analog comparator, and a byte-oriented two-wire serial interface (I2C compatible) round out the peripheral set.
Typical applications include battery-powered sensor nodes, portable instrumentation, motor control front-ends, consumer appliance control panels, and legacy 5 V designs migrating to lower supply rails. The wide 1.8 V to 5.5 V range allows direct interfacing with both 3.3 V and 5 V peripherals.
A key design consideration is that the 10 MHz rating applies at 1.8 V; at 5 V the same silicon can be clocked faster, but the -10 speed grade is specified for 10 MHz. Decouple VCC and AVCC with 100 nF ceramic capacitors placed within a few millimeters of the pins, and use a separate LC filter on AVCC when the ADC is used for precision measurement.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single reference for selection, replacement and layout decisions.
Drop-in alternatives for ATMEGA48V-10AUR β 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-10AUR (same form factor and footprint) β differing in Internal Oscillator, Operating Temperature, RoHS Status, Maximum Clock Frequency, Package.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ATMEGA48PA-AUR
β Drop-Inβ In Stock
$1.72 / Unit
View Datasheet βATMEGA48V-10AU
β Drop-Inπ Reference alternative (not in catalog)
ATMEGA48A-AUR
β Drop-Inπ Reference alternative (not in catalog)
ATMEGA48-20AUR
β Drop-Inπ Reference alternative (not in catalog)
ATMEGA88PA-AUR
β Drop-Inπ Reference alternative (not in catalog)
ATMEGA168PA-AUR
β Drop-Inβ In Stock
$1.85 / Unit
View Datasheet βATMEGA48V-10AUR Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit AVR RISC |
| Program Memory Size | 4 KB (2K x 16) Flash |
| Flash Endurance | 10,000 write/erase cycles |
| SRAM | 512 B |
| EEPROM | 256 B |
| EEPROM Endurance | 100,000 write/erase cycles |
| Maximum Clock Frequency | 10 MHz |
| Throughput | Up to 10 MIPS at 10 MHz |
| Supply Voltage Range | 1.8 V to 5.5 V |
| Instruction Set | 131 powerful instructions, most single clock cycle |
| General Purpose Working Registers | 32 x 8-bit |
| General Purpose I/O Lines | 23 |
| ADC | 8-channel, 10-bit successive approximation |
| Timer/Counters | Two 8-bit, one 16-bit with compare modes |
| Serial Interfaces | USART, SPI, byte-oriented 2-wire (I2C compatible) |
| On-chip Analog Comparator | Yes |
| Debug Interface | debugWIRE on-chip debug system |
| Watchdog Timer | Programmable with separate on-chip oscillator |
| Internal Oscillator | Calibrated RC oscillator |
| Brown-out Detection | Programmable |
| Package | 32-TQFP (7x7 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40 C to +85 C |
| RoHS Status | Compliant (Green plastic package) |
ATMEGA48V-10AUR Pin Configuration
| Pin 1 | PD3 β Port D bit 3, also INT1/TXD |
| Pin 2 | PD4 β Port D bit 4, also XCK/T0 |
| Pin 3 | GND β Ground |
| Pin 4 | VCC β Digital supply voltage |
| Pin 5 | GND β Ground |
| Pin 6 | VCC β Digital supply voltage |
| Pin 7 | PB6 β Port B bit 6, also XTAL1/TOSC1 |
| Pin 8 | PB7 β Port B bit 7, also XTAL2/TOSC2 |
| Pin 9 | PD5 β Port D bit 5, also T1/OC0B |
| Pin 10 | PD6 β Port D bit 6, also AIN0/OC0A |
| Pin 11 | PD7 β Port D bit 7, also AIN1 |
| Pin 12 | PB0 β Port B bit 0, also ICP1/CLKO |
| Pin 13 | PB1 β Port B bit 1, also OC1A |
| Pin 14 | PB2 β Port B bit 2, also OC1B/SS |
| Pin 15 | PB3 β Port B bit 3, also OC2A/MOSI |
| Pin 16 | PB4 β Port B bit 4, also MISO |
| Pin 17 | PB5 β Port B bit 5, also SCK |
| Pin 18 | AVCC β Analog supply voltage for ADC |
| Pin 19 | ADC6 β ADC input channel 6 |
| Pin 20 | AREF β Analog reference voltage for ADC |
| Pin 21 | GND β Ground |
| Pin 22 | ADC7 β ADC input channel 7 |
| Pin 23 | PC0 β Port C bit 0, also ADC0 |
| Pin 24 | PC1 β Port C bit 1, also ADC1 |
| Pin 25 | PC2 β Port C bit 2, also ADC2 |
| Pin 26 | PC3 β Port C bit 3, also ADC3 |
| Pin 27 | PC4 β Port C bit 4, also ADC4/SDA |
| Pin 28 | PC5 β Port C bit 5, also ADC5/SCL |
| Pin 29 | PC6 β Port C bit 6, also RESET |
| Pin 30 | PD0 β Port D bit 0, also RXD |
| Pin 31 | PD1 β Port D bit 1, also TXD |
| Pin 32 | PD2 β Port D bit 2, also INT0 |
Typical Applications
ATMEGA48V-10AUR is suitable for 6 applications: Battery-Powered Sensor Nodes, Portable Instrumentation, Consumer Appliance Control Panels, Motor Control Front-Ends, Legacy 5V System Migration, Embedded Data Logging.
Battery-Powered Sensor Nodes
The ATMEGA48V-10AUR fits battery-powered sensor nodes because its 1.8 V to 5.5 V supply range allows direct operation from two AA cells or a single Li-ion cell without a boost converter, and its picoPower sleep modes keep standby current low. In a typical node, the MCU wakes from power-down on a timer or pin-change interrupt, samples an analog sensor through the 8-channel 10-bit ADC, processes the reading with the single-cycle RISC core, and transmits via USART or SPI before returning to sleep. The 4 KB Flash is sufficient for a compact sampling and communication stack, while the 256 B EEPROM stores calibration coefficients across power cycles. The trade-off is that at 1.8 V the clock is limited to 10 MHz, so designers needing faster processing must raise the supply or select a higher speed grade.
Recommended
Portable Instrumentation
Portable measurement instruments benefit from the ATMEGA48V-10AUR's integrated 8-channel 10-bit ADC, on-chip analog comparator and calibrated internal RC oscillator, which reduce external component count and board area. The MCU can digitize sensor signals directly, compare them against thresholds using the analog comparator for fast event detection, and drive a small LCD or LED display through the 23 GPIO lines. Because the internal oscillator removes the need for an external crystal in many designs, the 32-TQFP (7x7 mm) footprint can be kept compact. The 10 MIPS throughput at 10 MHz is adequate for sampling rates in the low kilohertz range. Designers should filter AVCC with an LC network when ADC accuracy matters, since supply noise directly degrades measurement resolution.
Recommended
Consumer Appliance Control Panels
The ATMEGA48V-10AUR is well suited to appliance control panels that must interface with both 3.3 V and 5 V peripherals, thanks to its 1.8 V to 5.5 V operating range and 23 general-purpose I/O lines. In this role the MCU scans buttons or a capacitive touch matrix, drives LEDs or a segment display, and controls relays or triacs through external drivers, using the three timer/counters for PWM dimming and periodic task scheduling. The byte-oriented two-wire serial interface (I2C compatible) connects to external EEPROM or display drivers, while the programmable watchdog with separate oscillator maintains reliability in noisy mains environments. The 4 KB Flash accommodates a compact control state machine. A key consideration is adequate decoupling and transient protection on the I/O lines that connect to the appliance harness.
Recommended
Motor Control Front-Ends
The ATMEGA48V-10AUR can serve as a motor control front-end, using its 16-bit timer/counter with compare modes to generate PWM waveforms and its 8-channel 10-bit ADC to sample current-sense or position feedback signals. The single-cycle RISC core provides deterministic interrupt latency, which is important for commutation timing in brushed DC and simple BLDC drives. The on-chip analog comparator enables fast overcurrent detection without ADC conversion latency, allowing the firmware to shut down PWM outputs within a few clock cycles. The 23 I/O lines are sufficient for gate driver control, direction and brake signals, and status LEDs. Designers should keep the analog supply (AVCC) well decoupled and route PWM traces away from ADC inputs to avoid noise coupling into current measurements.
Recommended
Legacy 5V System Migration
The ATMEGA48V-10AUR is a practical choice when migrating legacy 5 V AVR designs to lower supply rails, because it operates across the full 1.8 V to 5.5 V range and remains 5 V tolerant on its I/O, allowing direct connection to existing 5 V logic without level shifters. The 32-TQFP (7x7 mm) footprint and pinout match the broader ATmega48/88/168 family, so an existing PCB layout can often be reused with only a supply rail change. Firmware written for the ATmega48 typically recompiles without modification, though fuse settings and brown-out detection thresholds should be re-validated for the new rail. The main trade-off is that the 10 MHz speed grade limits throughput at low voltage, so timing-critical loops may need optimization or a faster device.
Recommended
Embedded Data Logging
The ATMEGA48V-10AUR supports embedded data logging applications by combining 256 B of on-chip EEPROM with 512 B SRAM and 4 KB Flash, allowing small calibration tables, configuration parameters and event counters to be stored without external memory. The MCU can sample sensors through its 10-bit ADC, timestamp events using the 16-bit timer/counter, and write records to EEPROM or stream them over USART to a host. The byte-oriented two-wire serial interface also allows connection to external serial EEPROM or FRAM when more storage is required. EEPROM endurance of 100,000 write cycles supports periodic logging at moderate rates. For high-frequency logging, designers should buffer records in SRAM and write in blocks to reduce EEPROM wear and extend device lifetime.
Recommended
Recommended Products Summary
Engineering reference data for ATMEGA48V-10AUR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATMEGA48PA-AUR | ATMEGA48V-10AU | ATMEGA48A-AUR | ATMEGA88PA-AUR |
|---|---|---|---|---|---|
| Package | 32-TQFP (7x7) | 32-TQFP (7x7) - same | 32-TQFP (7x7) - same | 32-TQFP (7x7) - same | 32-TQFP (7x7) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 4 KB | 4 KB | 4 KB | 4 KB | 8 KB |
| SRAM | 512 B | 512 B | 512 B | 512 B | 1 KB |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 512 B |
| Maximum Clock Frequency | 10 MHz | 10 MHz | 10 MHz | 10 MHz | 10 MHz |
| Supply Voltage Range | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 2.7 V to 5.5 V | 1.8 V to 5.5 V |
| GPIO Lines | 23 | 23 | 23 | 23 | 23 |
| ADC Channels / Resolution | 8-channel / 10-bit | 8-channel / 10-bit | 8-channel / 10-bit | 8-channel / 10-bit | 8-channel / 10-bit |
| Packaging | Tape & Reel | Tape & Reel | Tray/Tube | Tape & Reel | Tape & Reel |
Key Differentiators
- 1.8 V minimum supply enables two-cell battery operation (vs ATMEGA48A-AUR)
- picoPower generation available as pin-compatible upgrade (vs ATMEGA48PA-AUR)
- Tape-and-reel packaging for automated assembly (vs ATMEGA48V-10AU)
- Memory-scalable pin-compatible family (vs ATMEGA88PA-AUR)
Design Notes
Decouple both VCC pins (pins 4 and 6) and the AVCC pin (pin 18) with 100 nF ceramic capacitors placed within a few millimeters of the package. When the 10-bit ADC is used for precision measurement, insert a separate LC filter (for example 10 uH in series with 100 nF) on AVCC to isolate digital switching noise from the analog supply. Connect AREF (pin 20) to a clean reference or to AVCC through a 100 nF capacitor; never leave AREF floating. Estimated: at 10 MHz and 5 V, core current is on the order of a few milliamps, so a 100 nF decoupling capacitor per supply pin is sufficient for typical loads.
Route the crystal or resonator connections to XTAL1 (pin 7) and XTAL2 (pin 8) with short, symmetric traces and keep them away from PWM and switching nodes. If the calibrated internal RC oscillator is used instead, these pins can be left unconnected or used as GPIO. Place the RESET pull-up resistor and the ICSP header close to the MCU to minimize stub length on the SPI programming lines (MOSI, MISO, SCK, RESET). Keep the analog input traces to ADC0-ADC7 short and guard them with ground where possible to reduce crosstalk from digital I/O.
Do not exceed the absolute maximum ratings: the supply must stay within 1.8 V to 5.5 V, and no I/O pin should be driven above VCC. The 10 MHz speed grade is only guaranteed across the full voltage range; overclocking at 1.8 V can cause erratic Flash access. Always enable the programmable brown-out detector at a threshold appropriate for the supply so that Flash writes are not corrupted during power-down. When migrating firmware from a 5 V ATmega48 design, re-validate fuse settings, especially the clock source and BOD level, because incorrect fuses can lock the device.
The debugWIRE interface shares the RESET pin (pin 29). If debugWIRE is enabled, the RESET pin cannot be used as a normal I/O or as an external reset input, and the internal pull-up behavior changes. Disable the debugWIRE fuse before production programming. For the two-wire serial interface on PC4 (SDA) and PC5 (SCL), use pull-up resistors sized for the bus capacitance and clock rate; 4.7 kOhm is a common starting value for 100 kHz operation at 5 V. Keep the I2C traces short and avoid running them parallel to PWM outputs.
Compliance Information
Distributor data describes the 32-TQFP package as green and lead-free, consistent with RoHS compliance. REACH, halogen-free and conflict-minerals status were not stated in the retrieved data and are marked unknown. The device is not AEC-Q100 qualified.
