ATMEGA48V-10AI - 8-Bit AVR MCU 4KB Flash 10MHz | Microchip
Артикул: ATMEGA48V-10AI ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $2.15 | $2,15 |
| 10 | $1.94 | $19,40 |
| 100 | $1.72 | $172,00 |
| 500 | $1.55 | $775,00 |
| 1.000 | $1.38 | $1.380,00 |
ATMEGA48V-10AI Обзор
An 8-bit microcontroller is a single-chip computer that integrates a CPU, program memory, data memory, and peripherals such as timers, serial interfaces, and analog-to-digital converters. Within the semiconductor taxonomy, the ATmega48V sits at microcontroller -> 8-bit MCU -> embedded processor -> integrated circuit, and it is built on the AVR enhanced RISC architecture that executes most instructions in a single clock cycle, allowing the designer to trade processing speed against power consumption.
Key differentiators include 4 KB ISP Flash with 10,000 write/erase cycles, a true 10-bit ADC with 8 multiplexed channels, a programmable watchdog timer with separate on-chip oscillator, and debugWIRE on-chip debug capability. The device also integrates two 8-bit timers, one 16-bit timer, a USART, SPI, and a byte-oriented two-wire serial interface, plus an internal calibrated RC oscillator that removes the need for an external clock in many designs.
The ATmega48V uses picoPower technology to minimize active and standby current, making it well suited to battery-powered and always-on embedded systems. Its 1.8 V minimum supply allows direct operation from two AA cells or a single Li-ion cell with a low-dropout regulator, while the 5.5 V maximum keeps it compatible with legacy 5 V logic.
Typical applications include battery-powered sensor nodes, consumer appliance control panels, motor control front ends, and low-cost industrial instrumentation. The 32-pin TQFP footprint is shared across the ATmega48/88/168 family, so firmware and PCB layouts can be scaled by Flash size without redesign.
When designing with this device, decouple VCC and AVCC with 100 nF ceramic capacitors placed close to the pins, and keep the 32 kHz crystal or resonator traces short. The debugWIRE interface shares the RESET pin, so reserve a programming header footprint if field re-flashing is required.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that are not consolidated in the manufacturer datasheet, giving engineers a single reference for selection, cross-referencing, and procurement of the ATMEGA48V-10AI.
Аналоги без доработки для ATMEGA48V-10AI — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с ATMEGA48V-10AI (тот же форм-фактор и посадочное место) — отличается по Operating Temperature, Package, Instruction Set, Program Memory Size, Serial Interfaces.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
ATMEGA48V-10AU
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ATMEGA48V-10PI
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ATMEGA88V-10AU
✅ Прямая замена✓ В наличии
$1.58 / шт.
Открыть даташит →ATMEGA168V-10AU
✅ Прямая замена✓ В наличии
$1.1 / шт.
Открыть даташит →ATMEGA48PA-AU
✅ Прямая замена✓ В наличии
$1.38 / шт.
Открыть даташит →ATMEGA48A-AU
✅ Прямая замена✓ В наличии
$1.78 / шт.
Открыть даташит →ATMEGA48V-10AI Максимальные параметры и электрические характеристики
| Core Architecture | 8-bit AVR RISC |
| Program Memory Size | 4 KB (2K x 16) In-System Programmable Flash |
| Flash Endurance | 10,000 write/erase cycles |
| SRAM | 512 bytes |
| EEPROM | 256 bytes |
| Maximum Operating 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 I/O | 23 programmable I/O lines |
| ADC | 8-channel, 10-bit successive approximation |
| Timers | Two 8-bit, one 16-bit |
| Serial Interfaces | USART, SPI, Two-wire (I2C) |
| On-chip Debug | debugWIRE |
| Internal Oscillator | Calibrated 8 MHz RC oscillator |
| Корпус | 32-pin TQFP (7x7 mm) |
| Тип монтажа | Surface Mount |
| Рабочая температура | -40C to +85C |
| Статус RoHS | Compliant |
Конфигурация выводов ATMEGA48V-10AI
| Контакт 1 | PB0 — Port B, bit 0 (also ICP1/PCINT0) |
| Контакт 2 | PB1 — Port B, bit 1 (also OC1A/PCINT1) |
| Контакт 3 | PB2 — Port B, bit 2 (also SS/OC1B/PCINT2) |
| Контакт 4 | PB3 — Port B, bit 3 (also MOSI/OC2A/PCINT3) |
| Контакт 5 | PB4 — Port B, bit 4 (also MISO/PCINT4) |
| Контакт 6 | PB5 — Port B, bit 5 (also SCK/PCINT5) |
| Контакт 7 | PB6 — Port B, bit 6 (also XTAL1/TOSC1/PCINT6) |
| Контакт 8 | PB7 — Port B, bit 7 (also XTAL2/TOSC2/PCINT7) |
| Контакт 9 | RESET — Reset input (active low), also debugWIRE |
| Контакт 10 | VCC — Digital supply voltage |
| Контакт 11 | GND — Ground |
| Контакт 12 | XTAL1 — Crystal oscillator input / external clock |
| Контакт 13 | XTAL2 — Crystal oscillator output |
| Контакт 14 | PD0 — Port D, bit 0 (also RXD/PCINT16) |
| Контакт 15 | PD1 — Port D, bit 1 (also TXD/PCINT17) |
| Контакт 16 | PD2 — Port D, bit 2 (also INT0/PCINT18) |
| Контакт 17 | PD3 — Port D, bit 3 (also INT1/OC2B/PCINT19) |
| Контакт 18 | PD4 — Port D, bit 4 (also T0/PCINT20) |
| Контакт 19 | PD5 — Port D, bit 5 (also T1/OC0B/PCINT21) |
| Контакт 20 | PD6 — Port D, bit 6 (also AIN0/OC0A/PCINT22) |
| Контакт 21 | PD7 — Port D, bit 7 (also AIN1/PCINT23) |
| Контакт 22 | PC0 — Port C, bit 0 (also ADC0/PCINT8) |
| Контакт 23 | PC1 — Port C, bit 1 (also ADC1/PCINT9) |
| Контакт 24 | PC2 — Port C, bit 2 (also ADC2/PCINT10) |
| Контакт 25 | PC3 — Port C, bit 3 (also ADC3/PCINT11) |
| Контакт 26 | PC4 — Port C, bit 4 (also ADC4/PCINT12) |
| Контакт 27 | PC5 — Port C, bit 5 (also ADC5/PCINT13) |
| Контакт 28 | PC6 — Port C, bit 6 (also ADC6/PCINT14) |
| Контакт 29 | PC7 — Port C, bit 7 (also ADC7/PCINT15) |
| Контакт 30 | AVCC — Analog supply voltage for ADC |
| Контакт 31 | GND — Ground |
| Контакт 32 | AREF — Analog reference voltage for ADC |
Типичное применение
ATMEGA48V-10AI подходит для 6 применениеs: Battery-Powered Sensor Nodes, Consumer Appliance Control Panels, Motor Control Front Ends, Low-Cost Industrial Instrumentation, Embedded Data Logging, Legacy 5 V System Migration.
Battery-Powered Sensor Nodes
The ATMEGA48V-10AI fits battery-powered sensor nodes because its 1.8 V minimum supply and picoPower technology allow direct operation from two AA cells or a single Li-ion cell without a boost converter. In a typical node, the MCU wakes from power-down mode on a watchdog or pin-change interrupt, samples a sensor through the 8-channel 10-bit ADC, and transmits via the USART or SPI radio interface before returning to sleep. The 4 KB Flash is sufficient for a compact sensor stack plus a lightweight protocol, and the 512 bytes SRAM holds the sample buffer. The internal calibrated 8 MHz RC oscillator removes the external crystal, cutting bill-of-materials cost and board area. Designers should budget the ADC reference from AVCC with a 100 nF decoupling capacitor and keep the sleep current below 1 uA to achieve multi-year coin-cell life.
Рекомендуется
Consumer Appliance Control Panels
The ATMEGA48V-10AI is used in consumer appliance control panels where a low-cost 8-bit MCU must read buttons, drive LEDs or a small display, and control relays or triacs. Its 23 programmable I/O lines and two 8-bit plus one 16-bit timer provide enough PWM and timing resources for motor speed control, buzzer tones, and capacitive-touch scanning. The 5.5 V maximum supply allows direct interfacing with 5 V logic and relay driver transistors, while the 10-bit ADC monitors thermistors or current-sense shunts. Because the ATmega48/88/168 family shares the same 32-pin TQFP footprint, a single PCB can be populated with 4 KB, 8 KB, or 16 KB Flash variants to cover multiple appliance SKUs. Decouple VCC and AVCC locally and add a reset supervisor if the appliance rail ramps slowly.
Рекомендуется
Motor Control Front Ends
The ATMEGA48V-10AI serves as a motor control front end in small brushed-DC and stepper applications, generating PWM with its 8-bit and 16-bit timers while reading position or current feedback through the 10-bit ADC. At 10 MHz it delivers up to 10 MIPS, enough for a simple PI current loop or trapezoidal commutation at low switching frequencies. The 16-bit timer supports precise pulse generation for stepper drivers, and the USART allows a host controller to send speed and direction commands. The 1.8 V to 5.5 V range accommodates both 3.3 V and 5 V gate-driver logic. Keep the ADC ground return separate from the power stage ground and place a 100 nF capacitor on AREF to reduce switching noise coupling into current measurements. For higher loop rates, the pin-compatible ATMEGA48PA-AU doubles the clock ceiling to 20 MHz.
Рекомендуется
Low-Cost Industrial Instrumentation
The ATMEGA48V-10AI is suited to low-cost industrial instrumentation such as temperature transmitters, flow meters, and data loggers, where the 8-channel 10-bit ADC digitizes sensor signals and the USART or two-wire interface reports results to a supervisory system. The -40C to +85C industrial temperature rating covers most factory-floor environments, and the 1.8 V to 5.5 V supply range tolerates the wide rails found in 24 V industrial systems after regulation. The 256 bytes EEPROM stores calibration coefficients without an external memory device, and debugWIRE supports in-circuit debugging during development. Use a precision external reference on AREF for ratiometric measurements, and add RC filtering ahead of the ADC inputs to reject motor and relay noise. The 4 KB Flash is adequate for a Modbus RTU slave stack plus calibration routines.
Рекомендуется
Embedded Data Logging
The ATMEGA48V-10AI works as an embedded data logger that samples analog or digital sensors on a timer interrupt, timestamps readings with the 16-bit timer, and stores them to an external SPI or two-wire EEPROM or Flash device. The 512 bytes SRAM buffers a page of samples before a burst write, reducing memory write cycles, while the 256 bytes internal EEPROM holds configuration and calibration data. The 1.8 V to 5.5 V supply lets the logger run from a single Li-ion cell, and picoPower sleep modes extend battery life between sampling intervals. The internal 8 MHz RC oscillator is accurate enough for interval logging; add a 32.768 kHz crystal if real-time clock accuracy matters. Keep the SPI clock traces short and add series termination if the memory device is more than a few centimeters away.
Рекомендуется
Legacy 5 V System Migration
The ATMEGA48V-10AI is often chosen to migrate legacy 5 V 8-bit designs to a modern AVR core while retaining 5 V logic compatibility, because its 5.5 V maximum supply allows direct connection to 5 V peripherals without level shifters. The 32-pin TQFP footprint and ATmega48/88/168 pinout make it straightforward to replace older 8051 or PIC devices after a firmware port, and the 131-instruction RISC core executes most operations in a single clock cycle for predictable timing. The 10-bit ADC and hardware USART, SPI, and two-wire interfaces replace discrete support chips, shrinking the board. During migration, verify that any 5 V-only peripherals do not exceed the MCU absolute maximum ratings, and add a 100 nF decoupling capacitor per supply pin. The pin-compatible ATMEGA168V-10AU provides headroom if the ported firmware outgrows 4 KB.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для ATMEGA48V-10AI — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | ATMEGA48V-10AU | ATMEGA88V-10AU | ATMEGA168V-10AU | ATMEGA48PA-AU |
|---|---|---|---|---|---|
| Package | 32-pin TQFP (7x7 mm) | 32-pin TQFP (7x7 mm) - same | 32-pin TQFP (7x7 mm) - same | 32-pin TQFP (7x7 mm) - same | 32-pin TQFP (7x7 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 4 KB (2K x 16) | 4 KB | 8 KB | 16 KB | 4 KB |
| SRAM | 512 bytes | 512 bytes | 1 KB | 1 KB | 512 bytes |
| EEPROM | 256 bytes | 256 bytes | 512 bytes | 512 bytes | 256 bytes |
| Maximum Frequency | 10 MHz | 10 MHz | 10 MHz | 10 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 | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Temperature Grade | -40C to +85C (industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| ADC Channels / Resolution | 8 channels / 10-bit | 8 channels / 10-bit | 8 channels / 10-bit | 8 channels / 10-bit | 8 channels / 10-bit |
| On-chip Debug | debugWIRE | debugWIRE | debugWIRE | debugWIRE | debugWIRE |
Ключевые отличия
- Lowest-cost 4 KB entry point in the ATmega48/88/168 family (против ATMEGA88V-10AU)
- 1.8 V operation at full 10 MHz speed grade (против ATMEGA48PA-AU)
- Industrial temperature rating in the same footprint (против ATMEGA48V-10AU)
Заметки по проектированию
Decouple both VCC (pin 10) and AVCC (pin 30) with 100 nF ceramic capacitors placed within a few millimeters of the pins, and add a 10 uF bulk capacitor on the board rail. AVCC must be within 0.3 V of VCC per the ATmega48/88/168 datasheet; if the ADC is unused, AVCC can be tied to VCC through the decoupling network. Estimated: at 10 MHz and 5 V, active current is roughly 10-12 mA, so a 100 nF capacitor per supply pin keeps transient droop below 50 mV during I/O switching.
Keep the crystal or resonator traces between XTAL1 (pin 12) and XTAL2 (pin 13) as short as possible and guard them with ground. Place the load capacitors directly at the crystal pins and connect their ground returns to the MCU ground plane with vias. If the internal calibrated 8 MHz RC oscillator is used instead, leave XTAL1/XTAL2 unconnected but do not route signals beneath them. Route the debugWIRE RESET line (pin 9) away from switching nodes to avoid accidental resets during in-circuit debugging.
The debugWIRE interface shares the RESET pin, so enabling debugWIRE disables the external reset function; always provide a programming header and a way to disable the DWEN fuse if field recovery is needed. Do not exceed the 5.5 V absolute maximum supply, and ensure the AREF voltage never exceeds AVCC. Estimated: with a 10-bit ADC and a 5 V AREF, one LSB is about 4.9 mV, so keep analog ground returns separate from digital ground to preserve accuracy. Brown-out detection should be enabled for reliable EEPROM writes.
Информация о соответствии
RoHS and REACH compliance reported by distributor listings for the ATMEGA48V-10AI. Not AEC-Q100 qualified; the ATmega48/88/168 family is offered in automotive-grade variants separately. Halogen-free status not stated in the retrieved data.
