ATMEGA48PV-10AU - 8-bit AVR MCU 10MHz 4KB Flash | Microchip
MPN: ATMEGA48PV-10AU ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.68 | $2.68 |
| 10 | $2.45 | $24.50 |
| 100 | $2.1 | $210.00 |
| 500 | $1.85 | $925.00 |
| 1,000 | $1.62 | $1,620.00 |
ATMEGA48PV-10AU Overview
An 8-bit microcontroller (MCU) is a self-contained computing IC that integrates a processor core, program memory, data memory, and peripherals on a single die. Within the power-management and embedded-systems hierarchy, the ATmega family sits under the AVR 8-bit RISC product line of Microchip Technology (formerly Atmel), which competes with the PIC16 and MSP430 families in cost-sensitive embedded control.
Key features include the advanced RISC architecture with 131 instructions, most executing in a single clock cycle, delivering up to 10 MIPS throughput at 10MHz. The picoPower technology provides multiple sleep modes for ultra-low-power designs, and the ATMEGA48PV variant is specified for 1.8V low-voltage operation at reduced clock speed. Peripherals include three flexible timer/counters with compare modes, a 10-bit ADC, SPI, TWI (I2C), and UART/USART serial interfaces.
The in-system programmable (ISP) Flash allows firmware updates over SPI without removing the device from the PCB, while the 256B EEPROM retains calibration data through power cycles. Brown-out detection and an internal RC oscillator reduce external component count.
Typical applications include battery-powered sensor nodes, industrial process control, home appliances, and consumer electronics where 10MHz performance and 4KB of code space are sufficient.
Design consideration: the PV speed grade limits operation to 10MHz; at 5V operation above 10MHz, choose the 20MHz ATMEGA48A/ATMEGA48PA grades instead, and ensure decoupling capacitors on both VCC pins plus AVCC.
This page adds distributor pricing, drop-in alternatives, pinout data, and practical design notes that go beyond the manufacturer datasheet.
Drop-in alternatives for ATMEGA48PV-10AU — 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-10AU (same form factor and footprint) — differing in RoHS Status, Package, EEPROM, SRAM, Flash Memory.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATMEGA48PA-AU
✅ Drop-In✓ In Stock
$1.38 / Unit
View Datasheet →ATMEGA48PA-AUR
✅ Drop-In✓ In Stock
$1.72 / Unit
View Datasheet →ATMEGA48PB-AUR
✅ Drop-In✓ In Stock
$0.39 / Unit
View Datasheet →ATMEGA48-20AU
✅ Drop-In✓ In Stock
$1.6 / Unit
View Datasheet →ATMEGA88PA-AU
✅ Drop-In✓ In Stock
$1.21 / Unit
View Datasheet →ATMEGA168PA-AU
✅ Drop-In✓ In Stock
$0.98 / Unit
View Datasheet →ATMEGA328P-AU
✅ Drop-In✓ In Stock
$1.85 / Unit
View Datasheet →ATMEGA48PV-10AU Maximum Ratings & Electrical Characteristics
| Core | AVR 8-bit RISC |
| Core Size | 8-Bit |
| Maximum Clock Frequency | 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 |
| Connectivity | I2C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Timers | Three flexible timer/counters with compare modes |
| ADC Resolution | 10-bit |
| Instructions | 131 instructions, most single-cycle |
| Package | 32-TQFP (7x7 mm) |
| Mounting Type | Surface Mount |
| Low Voltage Variant | 1.8V operation (picoPower) |
| Flash Programming | In-System Programmable (ISP) |
| RoHS Status | Compliant (Green package per Mouser listing) |
ATMEGA48PV-10AU Pin Configuration
| Pin 1 | PD3 — Port D, bit 3 (GPIO) |
| Pin 2 | PD4 — Port D, bit 4 (GPIO / XCK for USART) |
| Pin 3 | GND — Ground |
| Pin 4 | VCC — Digital supply voltage |
| Pin 5 | GND — Ground |
| Pin 6 | VCC — Digital supply voltage |
| Pin 7 | PB6/XTAL1/TOSC1 — Port B bit 6 / crystal oscillator input / timer oscillator input |
| Pin 8 | PB7/XTAL2/TOSC2 — Port B bit 7 / crystal oscillator output / timer oscillator output |
| Pin 9 | PD5 — Port D, bit 5 (GPIO / OC0B / T1) |
| Pin 10 | PD6 — Port D, bit 6 (GPIO / OC0A / AIN0) |
| Pin 11 | PD7 — Port D, bit 7 (GPIO / AIN1) |
| Pin 12 | PB0 — Port B, bit 0 (GPIO / ICP1 / CLKO) |
| Pin 13 | PB1 — Port B, bit 1 (GPIO / OC1A) |
| Pin 14 | PB2 — Port B, bit 2 (GPIO / SS / OC1B) |
| Pin 15 | PB3/MOSI/OC2A — Port B bit 3 / SPI Master Out / Timer2 output compare |
| Pin 16 | PB4/MISO — Port B bit 4 / SPI Master In |
| Pin 17 | PB5/SCK — Port B bit 5 / SPI Clock |
| Pin 18 | AVCC — ADC supply voltage |
| Pin 19 | ADC6 — ADC input channel 6 |
| Pin 20 | AREF — Analog reference voltage |
| Pin 21 | GND — Ground |
| Pin 22 | ADC7 — ADC input channel 7 |
| Pin 23 | PC0/ADC8 — Port C bit 0 / ADC channel 8 |
| Pin 24 | PC1/ADC9 — Port C bit 1 / ADC channel 9 |
| Pin 25 | PC2/ADC10 — Port C bit 2 / ADC channel 10 |
| Pin 26 | PC3/ADC11 — Port C bit 3 / ADC channel 11 |
| Pin 27 | PC4/ADC12/SDA — Port C bit 4 / ADC channel 12 / TWI data |
| Pin 28 | PC5/ADC13/SCL — Port C bit 5 / ADC channel 13 / TWI clock |
| Pin 29 | PC6/RESET — Port C bit 6 / Reset (active low) |
| Pin 30 | PD0/RXD — Port D bit 0 / USART receive |
| Pin 31 | PD1/TXD — Port D bit 1 / USART transmit |
| Pin 32 | PD2/INT0 — Port D bit 2 / External interrupt 0 |
Typical Applications
ATMEGA48PV-10AU is suitable for 6 applications: Battery-Powered Sensor Nodes, Industrial Process Control, Home Appliances and White Goods, Consumer Electronics and Toys, Remote Controls and RF Key Fobs, Educational and Hobbyist Boards.
Battery-Powered Sensor Nodes
The ATMEGA48PV-10AU fits battery-powered sensor nodes because picoPower technology provides multiple sleep modes and 1.8V operation directly from two alkaline cells, eliminating a boost converter. A typical node samples an analog sensor through the 10-bit ADC, computes a filtered value using the 512B SRAM, and transmits over the UART to a radio module, then enters power-down mode between readings. The PV speed grade's 10MHz limit is not a bottleneck because the sensor loop runs for milliseconds and sleeps for minutes, so average current is dominated by sleep-mode draw, extending battery life to years in low-duty-cycle designs.
Recommended
Industrial Process Control
In industrial process control, the ATMEGA48PV-10AU operates from a 5V rail within its 1.8V-5.5V supply range, and its brown-out detector plus watchdog timer provide the fault recovery behavior required on factory floors. The three timer/counters with compare modes generate PWM outputs for valve or heater control while the TWI interface reads calibration data from the 256B EEPROM. The 23 I/O lines drive relays and status indicators directly, and the SPI port supports in-field firmware updates via ISP without removing the device, reducing maintenance downtime in control panels and sensor transmitters.
Recommended
Home Appliances and White Goods
Appliance control panels favor the ATMEGA48PV-10AU because its integrated peripherals - watchdog, brown-out reset, and internal RC oscillator - reduce bill-of-materials count on high-volume boards. The 4KB Flash is sufficient for button scanning, LED multiplexing, and relay sequencing state machines, while the 10-bit ADC reads temperature sensors (NTC) and AC voltage sensing for cycle control. The TQFP-32 (7x7mm) package suits automated assembly on two-layer consumer PCBs, and the green RoHS-compliant package meets environmental requirements for global appliance markets including Europe and Asia.
Recommended
Consumer Electronics and Toys
Cost-sensitive consumer products use the ATMEGA48PV-10AU where 4KB of code space and 10MHz execution handle sound effects, LED animation, and simple button interfaces. The picoPower modes keep the microcontroller asleep between user interactions so a coin-cell can power a product through its shelf life, and the 1.8V floor allows direct operation from a single lithium cell. Peripherals such as the 8-bit Timer/Counter with compare modes generate tones and PWM-dimmed LEDs without CPU overhead, keeping code compact within the 4KB program memory limit.
Recommended
Remote Controls and RF Key Fobs
Remote controls benefit from the ATMEGA48PV-10AU's combination of low standby power and single-cycle instruction execution, which lets it encode and clock out infrared or RF bit streams precisely using timer hardware. The 1.8V minimum supply matches two-cell battery configurations, and the 10-bit ADC can monitor battery voltage through an internal channel to drive a low-battery indicator. With 23 GPIO lines, one device handles a keypad matrix, status LEDs, and the modulator output simultaneously, and the 256B EEPROM stores pairing IDs and last-used channel settings through battery replacement.
Recommended
Educational and Hobbyist Boards
The ATmega48 family is widely used in education because the 131-instruction AVR RISC core is documented in a single family datasheet, making assembly-level teaching straightforward. The ATMEGA48PV-10AU in TQFP-32 matches the ATmega328 footprint used on Arduino-compatible boards, so students can start with 4KB and migrate upward without rewiring. ISP programming over SPI uses only three signal pins (PB3, PB4, PB5) plus reset, which are exposed as header pins, and free toolchains such as avr-gcc and Microchip Studio support the device with no licensing cost.
Recommended
Recommended Products Summary
Engineering reference data for ATMEGA48PV-10AU — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATMEGA48PA-AU | ATMEGA48PB-AUR | ATMEGA48-20AU | ATMEGA328P-AU |
|---|---|---|---|---|---|
| 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 |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 4 KB | 4 KB | 4 KB | 4 KB | 32 KB |
| SRAM | 512 B | 512 B | 512 B | 512 B | 2 KB |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 1 KB |
| Maximum Clock Speed | 10 MHz | 20 MHz (at 4.5-5.5V) | 20 MHz (at 4.5-5.5V) | 20 MHz | 20 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 | 4.5 V to 5.5 V (at 20MHz) | 1.8 V to 5.5 V |
| picoPower Technology | Yes | Yes (improved) | Yes (lowest power) | No | Yes |
Key Differentiators
- 1.8V low-voltage operation at the PV speed grade (vs ATMEGA48-20AU)
- Lower power consumption than the PV generation (vs ATMEGA48PA-AU)
- Lowest-cost entry point with pin-compatble upgrade path (vs ATMEGA328P-AU)
Design Notes
Decouple both VCC pins (pins 4 and 6) and the AVCC pin (pin 18) with 100nF ceramic capacitors placed within 2mm of each pin, plus one 4.7uF-10uF bulk capacitor per supply rail. AVCC must be connected to VCC even if the ADC is unused, otherwise the ADC and Port C functions will not operate correctly per the family datasheet. When running from 1.8V-3.3V, verify the brown-out fuse threshold is set below your minimum expected supply to avoid spurious resets during battery sag.
The PV speed grade is limited to 10MHz. Do not clock the ATMEGA48PV above 10MHz - unlike the 20MHz ATMEGA48A/PA grades, exceeding this frequency violates the datasheet frequency-versus-voltage derating curve and causes erratic execution. If the design needs 16-20MHz at 5V, substitute the ATMEGA48PA-AU drop-in instead. Also note the PV is being superseded by the ATMEGA48PA; for new production designs, prefer the PA and only use the PV for existing BOMs.
Route the ISP programming signals (PB3/MOSI pin 15, PB4/MISO pin 16, PB5/SCK pin 17, RESET pin 29) to a 2x3 header so firmware can be updated in-circuit. Keep the crystal (pins 7/8) traces short and symmetric with 12-22pF load capacitors, and isolate them from high-current PWM traces. The RESET pin needs a 10k pull-up to VCC for reliable startup, and if the debugWIRE interface is used, remove the pull-up during debugging.
Estimated: at 5V, 10MHz, and 20mA typical active current, power dissipation is 0.1W, which with the TQFP-32 theta_JA of roughly 100 C/W (typical for a 4-layer board; verify with Microchip's package thermal data) gives only about 10C junction rise - no heatsinking is required. Thermal concerns only arise from external circuitry on shared nets, not from the MCU itself in this power class.
Compliance Information
Green RoHS-compliant package per Mouser listing (TEMP GRN). REACH, halogen-free, and conflict-minerals status not stated in provided data.
