ATMEGA48PV-10AUR - AVR 4KB Flash 10MHz MCU TQFP-32 | Microchip
MPN: ATMEGA48PV-10AUR β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.28 | $12.80 |
| 100 | $1.09 | $109.00 |
| 500 | $0.94 | $470.00 |
| 1,000 | $0.81 | $810.00 |
ATMEGA48PV-10AUR Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals such as timers, communication interfaces, and analog-to-digital converters on one die. Within the power management and embedded systems hierarchy, the MCU sits at the control layer: it reads sensors, executes firmware logic, and drives actuators or communication links in an embedded system. The AVR ATmega family from Microchip (originally Atmel) is one of the most widely used 8-bit MCU architectures, famous as the heart of Arduino boards.
Key features include the advanced RISC AVR core with 131 powerful instructions, most executing in a single clock cycle, delivering up to 10 MIPS throughput at 10 MHz. The P suffix indicates picoPower-style low-voltage capability down to 1.8 V, and the V variant supports 10 MHz at reduced supply, while onboard peripherals include one 8-bit and one 16-bit timer, a 10-bit ADC with up to 8 channels, SPI, TWI (I2C-compatible), and a USART serial interface. In-system programmable (ISP) FLASH and 64 bytes of lock-protected EEPROM simplify field updates.
Architecturally, the AVR uses a Harvard structure with separate program and data buses, allowing an instruction fetch and data access simultaneously. Two-cycle multiply hardware, three flexible timer/counters with compare modes and PWM, and a programmable serial USART give it deterministic real-time behavior uncommon in competing 8-bit cores at this price point.
Typical applications include industrial sensor nodes and building automation, consumer appliance control and battery-powered devices exploiting the 1.8 V low-voltage operation, and hobby or educational embedded designs where the ATmega ecosystem, ISP programming, and AVR GCC toolchain lower development cost.
When designing with the ATMEGA48PV-10AUR, remember that the 10 MHz speed grade pairs with the low-voltage V/P supply range; at 5 V and higher clock speeds the non-V ATmega48P grades are the correct choice per the Microchip frequency-versus-voltage curve.
This page synthesizes verified distributor data, drop-in alternative cross-references, and practical design guidance not found in the manufacturer datasheet.
Drop-in alternatives for ATMEGA48PV-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 ATMEGA48PV-10AUR (same form factor and footprint) β differing in RoHS Status, EEPROM, SRAM, Flash Memory, Communication Interfaces.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ATMEGA48PA-AUR
β Drop-Inβ In Stock
$1.72 / Unit
View Datasheet βATMEGA48PB-AUR
β Drop-Inβ In Stock
$0.39 / Unit
View Datasheet βATMEGA88PV-10AU
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
ATMEGA168PV-10AUR
β Drop-Inβ In Stock
$1.19 / Unit
View Datasheet βATMEGA328P-AUR
β Drop-Inπ Reference alternative (not in catalog)
ATMEGA48PV-10AUR Maximum Ratings & Electrical Characteristics
| Core Processor | AVR |
| Core Size | 8-Bit |
| Speed | 10 MHz |
| Flash Memory | 4 KB (2K x 16) |
| EEPROM | 256 B |
| SRAM | 512 B |
| Supply Voltage Range | 1.8 V to 5.5 V |
| I/O Count | 23 |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | SPI, TWI/I2C, USART |
| ADC Resolution | 10-bit |
| Number of ADC Channels | 8 |
| Timers | One 8-bit, One 16-bit |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 32-TQFP (7x7 mm) |
| Mounting Type | Surface Mount |
| Program Memory Type | FLASH (In-System Programmable) |
| RoHS Status | Compliant (GREEN package per distributor data) |
ATMEGA48PV-10AUR Pin Configuration
| Pin 1 | PD3 β Port D bit 3 (digital I/O) |
| Pin 2 | PD4 β Port D bit 4 (digital I/O / 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 / XTAL1 (clock input) |
| Pin 8 | PB7 β Port B bit 7 / XTAL2 (clock output) |
| Pin 9 | PD5 β Port D bit 5 (digital I/O / T1/OC0B) |
| Pin 10 | PD6 β Port D bit 6 (digital I/O / AIN0/OC0A) |
| Pin 11 | PD7 β Port D bit 7 (digital I/O / AIN1) |
| Pin 12 | PB0 β Port B bit 0 (digital I/O / ICP1/CLKO) |
| Pin 13 | PB1 β Port B bit 1 (digital I/O / OC1A) |
| Pin 14 | PB2 β Port B bit 2 (digital I/O / SS/OC1B) |
| Pin 15 | PB3 β Port B bit 3 (digital I/O / MOSI/OC2A) |
| Pin 16 | PB4 β Port B bit 4 (digital I/O / MISO) |
| Pin 17 | PB5 β Port B bit 5 (digital I/O / SCK) |
| Pin 18 | AVCC β ADC supply voltage |
| Pin 19 | ADC6 β ADC input channel 6 (TQFP only) |
| Pin 20 | AREF β Analog reference voltage |
| Pin 21 | GND β Ground |
| Pin 22 | ADC7 β ADC input channel 7 (TQFP only) |
| Pin 23 | PC0 β Port C bit 0 (ADC0/PCINT8) |
| Pin 24 | PC1 β Port C bit 1 (ADC1/PCINT9) |
| Pin 25 | PC2 β Port C bit 2 (ADC2/PCINT10) |
| Pin 26 | PC3 β Port C bit 3 (ADC3/PCINT11) |
| Pin 27 | PC4 β Port C bit 4 (ADC4/SDA/PCINT12) |
| Pin 28 | PC5 β Port C bit 5 (ADC5/SCL/PCINT13) |
| Pin 29 | PC6 β Port C bit 6 / RESET (active low) |
| Pin 30 | PD0 β Port D bit 0 (RXD/PCINT16) |
| Pin 31 | PD1 β Port D bit 1 (TXD/PCINT17) |
| Pin 32 | PD2 β Port D bit 2 (INT0/PCINT18) |
Typical Applications
ATMEGA48PV-10AUR is suitable for 6 applications: Industrial Sensor Nodes, Battery-Powered Portable Devices, Consumer Appliance Control, LED Lighting and Dimming Control, Educational and Hobby Embedded Systems, Building Automation and Security Panels.
Industrial Sensor Nodes
The ATMEGA48PV-10AUR fits industrial sensor nodes because its 10-bit, 8-channel ADC digitizes analog sensors such as thermistors and pressure bridges directly, while the SPI and TWI interfaces connect digital sensors and the USART links to RS-485 transceivers for long-run fieldbus communication. In a typical node, the MCU samples a sensor at 1-100 Hz, applies firmware filtering, and transmits readings over TWI or USART while spending the idle interval in power-down sleep, where the P-class die draws minimal current. The 4 KB FLASH is sufficient for MODBUS-lite or simple protocol stacks, and the 256 B EEPROM stores calibration coefficients that survive power cycles. Industrial -40C to +85C temperature rating matches cabinet and factory-floor environments without component derating.
Recommended
Battery-Powered Portable Devices
The 1.8 V to 5.5 V supply range of the ATMEGA48PV-10AUR allows direct operation from two alkaline cells (3.0 V nominal) or a lithium coin cell without a boost converter, saving board area and cost in portable products. The P-suffix die provides power-reduction registers that gate clocks to unused peripherals and multiple sleep modes; a design waking on watchdog or pin-change interrupt every second can average microamp-level consumption. Running at 1 MHz internal RC instead of 10 MHz external crystal further reduces dynamic current roughly in proportion to frequency, and firmware can scale the clock at runtime via the CLKPR register. The 32-TQFP 7x7 mm package occupies under 50 mm2, leaving room for a battery holder in compact enclosures such as meters, remotes, and medical wearables.
Recommended
Consumer Appliance Control
White goods, small kitchen appliances, and HVAC controllers use the ATMEGA48PV-10AUR as the main control IC because it combines PWM generation for triac or MOSFET-based load dimming with a 10-bit ADC for user-interface potentiometers and NTC temperature sensing. The two timers (one 8-bit, one 16-bit) produce multiple independent PWM channels for motor speed control and LED indicator dimming simultaneously, while the brown-out detector and watchdog timer guarantee safe recovery from mains disturbances - an essential feature in noisy appliance environments. Firmware for button scanning, buzzer tones, and simple state machines fits easily in 4 KB FLASH. The GREEN, RoHS-compliant package and industrial temperature range simplify certification for global consumer markets.
Recommended
LED Lighting and Dimming Control
The ATMEGA48PV-10AUR drives LED lighting ballasts and smart bulbs by generating hardware PWM on its port pins, which then gate MOSFETs or LED driver ICs. The 16-bit timer provides high-resolution PWM (up to 16-bit phase-correct mode) for flicker-free dimming, while the 8-bit timer runs an independent channel for status indication. The 10-bit ADC reads either a wall-dimmer potentiometer, an ambient photodiode, or the LED forward-voltage for thermal foldback protection, closing an analog control loop entirely on-chip. Operation from a 5 V rail derived from the mains supply is typical, and the internal 8 MHz RC oscillator removes the crystal from the BOM in cost-sensitive lamp designs where clock accuracy is unimportant.
Recommended
Educational and Hobby Embedded Systems
Because the ATmega48 shares the AVR instruction set and peripheral architecture of the famous Arduino ATmega328, the ATMEGA48PV-10AUR is an excellent low-cost teaching part: students program it with the same AVR GCC toolchain, an inexpensive USBasp programmer, and free Microchip Studio IDE. The 4 KB FLASH imposes a discipline that teaches efficient embedded C, and the 23 I/O lines plus SPI/TWI/USART cover classic lab exercises from LED blinking to I2C sensor networking and serial terminals. A common learning path builds a first project on the ATmega48 in TQFP, then migrates the same PCB footprint to the ATmega328P when projects outgrow 4 KB - a zero-redesign upgrade that makes the 48 an ideal entry point to the ecosystem.
Recommended
Building Automation and Security Panels
Door controllers, occupancy sensors, and small alarm panels deploy the ATMEGA48PV-10AUR as a distributed control node. The TWI interface buses multiple MCUs and I/O expanders behind a single master, the pin-change interrupts on all 23 I/O lines detect tamper switches and keypads without polling, and the 256 B EEPROM stores zone configurations and access codes through power outages. The watchdog timer with its dedicated internal oscillator provides fault recovery independent of the main clock, a requirement for supervised security equipment. USART connectivity to a GSM or RF module adds remote reporting, and the -40C to +85C rating covers unheated gateways and outdoor sensor enclosures. The low 1.8 V floor also supports backup-battery operation during mains failure.
Recommended
Recommended Products Summary
Engineering reference data for ATMEGA48PV-10AUR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATMEGA48PA-AUR | ATMEGA48PB-AUR | ATMEGA88PV-10AU | ATMEGA168PV-10AU | ATMEGA328P-AUR |
|---|---|---|---|---|---|---|
| Package | 32-TQFP (7x7 mm) | 32-TQFP (7x7 mm) - same | 32-TQFP (7x7 mm) - same | 32-TQFP (7x7 mm) - same | 32-TQFP (7x7 mm) - same | 32-TQFP (7x7 mm) - same |
| Brand | Microchip Technology (Atmel) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 4 KB | 4 KB | 4 KB | 8 KB | 16 KB | 32 KB |
| SRAM | 512 B | 512 B | 512 B | 1 KB | 1 KB | 2 KB |
| EEPROM | 256 B | 256 B | 256 B | 512 B | 512 B | 1 KB |
| Max Clock Speed | 10 MHz | 20 MHz | 20 MHz | 10 MHz | 10 MHz | 20 MHz |
| Supply Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Silicon Family / Revision | ATmega48P (V grade) | ATmega48PA picoPower | ATmega48PB (newest) | ATmega88P (V grade) | ATmega168P (V grade) | ATmega328P |
| Relative Cost Tier | Lowest of family | Comparable | Comparable | Higher | Higher | Highest |
Key Differentiators
- Lowest-cost 4 KB entry point of the pin-compatible ATmega family (vs ATMEGA328P-AUR)
- 1.8 V operation at rated speed (vs ATMEGA48-20AU)
- Same-footprint memory upgrade path (vs ATMEGA88PV-10AU / ATMEGA168PV-10AU)
Design Notes
Decouple both VCC pins (pins 4 and 6) and AVCC (pin 18) individually with 100 nF ceramic capacitors placed within 2 mm of each pin, plus one bulk 4.7-10 uF capacitor per board. Tie AVCC to VCC through a low-pass LC filter (e.g., 10 uH + 100 nF) when the ADC is used in noisy switching environments - ADC accuracy degrades noticeably if AVCC shares the noisy digital rail. Connect AREF to a clean reference (internal bandgap or external reference) with a 100 nF capacitor; never drive AREF while the internal reference is selected.
PC6 (pin 29) defaults to active-low RESET, not a general-purpose I/O. If you need 23 I/O lines, the RESETDIS fuse can convert it to PC6 I/O, but this permanently disables high-voltage in-circuit reprogramming of the fuse itself - an irreversible one-way trip for many designs. Also note the V speed grade limits operation to 10 MHz; running clock fuses at 16 MHz on this part violates the frequency-voltage curve. Verify clock fuse settings before ISP programming, since a wrong fuse choice (e.g., external clock selected with no clock source) can brick the part until a high-voltage programmer is used.
For the 32-TQFP (0.8 mm pitch), use a quad footprint with 0.45-0.5 mm wide pads extending 0.5 mm beyond the lead tips for hand-inspection and rework. The center of the TQFP-32 has no exposed pad, so the pin-21 GND via-star under the die is the best grounding point: place at least 3-4 vias connecting the ground flood directly below the package. Route the ISP header (MOSI/MISO/SCK/RESET) as short traces; long ISP lines pick up noise and cause intermittent flash-verification failures at production programming stations.
Estimated: at 5 V, 10 MHz, and ~10 mA typical active current (per family datasheet typical figures), power dissipation is only ~50 mW, producing a junction rise of a few degrees C over ambient with the TQFP-32 theta_JA - no thermal design effort is required for this MCU except in high-temperature sealed enclosures near the +85C limit, where total board-level power should be reviewed.
Compliance Information
Distributor and datasheet index data describe the package as GREEN (halogen-free, RoHS-compliant lead-free). REACH and conflict-minerals status not stated in the provided data.
