ATMEGA88-15MT - 8-bit AVR MCU 16MHz 8KB Flash QFN-32 | Microchip
MPN: ATMEGA88-15MT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.39 | $1.39 |
| 10 | $1.26 | $12.60 |
| 100 | $1.13 | $113.00 |
| 500 | $1.02 | $510.00 |
| 1,000 | $0.93 | $930.00 |
ATMEGA88-15MT Overview
An 8-bit AVR microcontroller is a single-chip processor that integrates a RISC CPU core, program Flash, data SRAM, EEPROM, and peripheral functions such as timers, USART, and ADC on one die. Microcontrollers sit at the heart of the embedded systems hierarchy, above discrete logic and below application processors, and the ATmega family (ATmega48/88/168/328) is one of the most widely deployed 8-bit MCU families in industrial and hobby electronics, including the Arduino ecosystem.
Key features include the AVR advanced RISC architecture with 130 powerful instructions, most executing in a single clock cycle, delivering throughput approaching 1 MIPS per MHz. The device provides 8KB (4K x 16) self-programmable Flash with read-while-write support, 23 general-purpose I/O lines, 32 general-purpose working registers, and a rich peripheral set including three flexible timer/counters with compare modes, a serial programmable USART, and a byte-oriented Two-Wire serial interface (I2C-compatible).
Technically, the Harvard-architecture core separates program and data buses, allowing simultaneous Flash and SRAM access. In-System Programming (ISP) enables field firmware updates without removing the chip, while boot-loader support allows reprogramming through application code. The picoPower-class low-power design supports multiple sleep modes for battery-conscious applications.
Typical applications include industrial automation and control nodes, consumer appliance control boards, and sensor or communication interfaces where 5V logic compatibility and proven AVR toolchain support matter.
Design consideration: at the full 16 MHz clock the part requires a 4.5V to 5.5V supply; for 2.7V to 5.5V operation the clock must be derated, so confirm the supply rail before finalizing the crystal selection.
This page synthesizes distributor pricing, drop-in alternatives, pinout data, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for ATMEGA88-15MT — 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 ATMEGA88-15MT (same form factor and footprint) — differing in Package, Operating Temperature, Speed, ADC Resolution, Communication Interfaces.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATMEGA88PA-15MZ
✅ Drop-In✓ In Stock
$1.45 / Unit
View Datasheet →ATMEGA88PA-MU
✅ Drop-In✓ In Stock
$1.26 / Unit
View Datasheet →ATMEGA48PV-10MUR
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.85 / Unit
View Datasheet →ATMEGA48PA-MUR
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.98 / Unit
View Datasheet →ATMEGA168PA-MU
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.72 / Unit
View Datasheet →ATMEGA328P-MU
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.28 / Unit
View Datasheet →ATMEGA88-15MT Maximum Ratings & Electrical Characteristics
| Core Processor | AVR |
| Core Size | 8-Bit |
| Speed | 16 MHz |
| Flash Memory Size | 8KB (4K x 16) |
| Flash Type | In-System Programmable (ISP) |
| Supply Voltage | 4.5 V to 5.5 V |
| I/O Count | 23 |
| General Purpose Working Registers | 32 x 8 |
| Instructions | 130 powerful instructions, most single-cycle |
| Throughput | Up to 1 MIPS per MHz |
| Timers/Counters | Three flexible timer/counters with compare modes |
| Communication Interfaces | USART, Two-Wire serial interface (I2C-compatible), SPI |
| Package Type | 32-QFN (5x5 mm), 0.5 mm pitch |
| Mounting Type | Surface Mount |
| Category | Integrated Circuits (ICs), Embedded, Microcontrollers |
| Life Cycle Stage | Active |
ATMEGA88-15MT Pin Configuration
| Pin 1 | PD3 — Port D, bit 3 (GPIO / analog comparator negative input AIN1) |
| Pin 2 | PD4 — Port D, bit 4 (GPIO / analog comparator positive input AIN0 / XCK/T0) |
| Pin 3 | GND — Ground |
| Pin 4 | VCC — Digital supply voltage |
| Pin 5 | GND — Ground |
| Pin 6 | VCC — Digital supply voltage |
| Pin 7 | PB6 — Port B, bit 6 (XTAL1/TOSC1 - crystal oscillator input) |
| Pin 8 | PB7 — Port B, bit 7 (XTAL2/TOSC2 - crystal oscillator output) |
| Pin 9 | PD5 — Port D, bit 5 (GPIO / T1 / OC0B) |
| Pin 10 | PD6 — Port D, bit 6 (GPIO / AIN0 / OC0A) |
| 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 — Port B, bit 3 (GPIO / MOSI / OC2A) |
| Pin 16 | PB4 — Port B, bit 4 (GPIO / MISO) |
| Pin 17 | PB5 — Port B, bit 5 (GPIO / SCK) |
| 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 — Port C, bit 0 (GPIO / ADC0 / SCL for Two-Wire interface) |
| Pin 24 | PC1 — Port C, bit 1 (GPIO / ADC1 / SDA for Two-Wire interface) |
| Pin 25 | PC2 — Port C, bit 2 (GPIO / ADC2 / TOSC1 option) |
| Pin 26 | PC3 — Port C, bit 3 (GPIO / ADC3 / TOSC2 option) |
| Pin 27 | PC4 — Port C, bit 4 (GPIO / ADC4 / SDA) |
| Pin 28 | PC5 — Port C, bit 5 (GPIO / ADC5 / SCL) |
| Pin 29 | PC6 — Port C, bit 6 (RESET - active-low reset input) |
| Pin 30 | PD0 — Port D, bit 0 (GPIO / RXD - USART receive) |
| Pin 31 | PD1 — Port D, bit 1 (GPIO / TXD - USART transmit) |
| Pin 32 | PD2 — Port D, bit 2 (GPIO / INT0 - external interrupt 0) |
Typical Applications
ATMEGA88-15MT is suitable for 6 applications: Industrial Automation and Control, Consumer Appliance Control Boards, Sensor and Data Acquisition Nodes, Embedded Communication Interfaces, Motor Control and PWM Actuation, Hobby, Education, and Rapid Prototyping.
Industrial Automation and Control
The ATMEGA88-15MT fits factory control nodes because its 5V-tolerant 23 I/O lines interface directly with legacy industrial logic levels, and its 16 MHz AVR core delivers roughly 16 MIPS, ample for sequence control and polling loops. Typical use is as a relay/actuator controller: three timer/counters with compare modes generate PWM for motor speed or valve positioning while the USART links to PLC or HMI networks at 115200 baud. Placed on a 4.5V to 5.5V rail with 100nF decoupling per VCC pin, the QFN-32 footprint occupies only 5x5 mm on dense I/O boards. Trade-off: no native CAN, so industrial fieldbus nodes need an external transceiver or protocol bridge.
Recommended
Consumer Appliance Control Boards
Appliance makers select the ATMEGA88-15MT for microwave panels, coffee machines, and small HVAC controls where a 5V supply already exists and unit cost under $1.40 (as of 2026-09-19) matters. The 8KB Flash holds UI logic, seven-segment or LCD driving, and touch/encoder input handling; the byte-oriented Two-Wire interface reads external EEPROM or sensors, while the USART supports factory test hooks. The 32-QFN (5x5 mm) package keeps the controller hidden under display boards. Its in-system programmable Flash lets the same PCB be flashed with product variants on the production line. Design consideration: budget 512 bytes of EEPROM for user settings and calibrate the internal RC oscillator or fit a crystal for timing-accurate functions.
Recommended
Sensor and Data Acquisition Nodes
With 23 I/O lines, a 10-class AVR ADC subsystem, and AVCC/AREF pins dedicated to analog accuracy, the ATMEGA88-15MT serves as the digitizing heart of sensor nodes reading potentiometers, NTC thermistors, and ratiometric bridges. The QFN pinout places ADC6 on pin 19 and ADC7 on pin 22, enabling differential-style routing away from digital returns. The 16 MHz clock provides headroom for oversampling and averaging to raise effective resolution, and the USART streams results to a gateway at standard baud rates. The 4.5V to 5.5V rail matches bridge-excitation requirements directly, eliminating an ADC reference amplifier in many designs. For battery nodes, evaluate the picoPower PA variant instead for its lower sleep current.
Recommended
Embedded Communication Interfaces
The ATMEGA88-15MT's serial programmable USART, Two-Wire serial interface, and hardware SPI make it an effective protocol translator between 5V field equipment and modern controllers. A common pattern is a Modbus RTU slave: the USART with a MAX485-class transceiver handles RS-485 framing, timers provide the 3.5-character inter-frame timing, and the 8KB Flash stores register maps plus CRC routines. The 16 MHz clock divides cleanly to standard baud rates, minimizing framing error. Because all three serial engines run concurrently, the part bridges I2C sensors to RS-485 networks in a single 5x5 mm QFN without external glue logic. Keep SPI bus traces short to preserve signal integrity at full clock.
Recommended
Motor Control and PWM Actuation
Three flexible timer/counters with compare modes let the ATMEGA88-15MT generate multiple independent PWM channels for DC motor speed control, servo positioning, and LED dimming. At 16 MHz, 8-bit PWM reaches 62.5 kHz, above audible range for fan and pump control; 16-bit Timer1 resolves servos at 0.5 us granularity. The 5.5V-maximum supply matches direct gate drive of small logic-level MOSFETs, and dead-time insertion is handled in software with input-capture feedback for cheap closed-loop speed regulation. The 32-QFN package's low inductance benefits switching-edge integrity, but designers should reserve the AVCC/AGND island for ADC current sensing. For automotive motor nodes, Microchip's ATMEGA64M1 AVR adds CAN and LIN peripherals.
Recommended
Hobby, Education, and Rapid Prototyping
The ATmega88 family is a staple of electronics education and maker projects because the same AVR instruction set and peripherals scale directly to the Arduino Uno's ATmega328P, and free GCC-based toolchains (avr-gcc, Microchip Studio) support all family members. The ATMEGA88-15MT's 8KB Flash is sufficient for blinking-LED through UART-DMX experiments, and its ISP interface requires only a $5 programmer. Under $1.50 at unit quantity (as of 2026-09-19), it is ideal for classroom kits produced in quantity. Students should start with the internal 8 MHz RC oscillator to avoid crystal-soldering issues, then move to an external crystal for UART timing. The shared pinout with ATmega328P-MU provides a seamless upgrade path.
Recommended
Recommended Products Summary
Engineering reference data for ATMEGA88-15MT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATMEGA88PA-15MZ | ATMEGA88PA-MU | ATMEGA168PA-MU | ATMEGA328P-MU |
|---|---|---|---|---|---|
| Package | 32-QFN (5x5 mm) | 32-QFN (5x5 mm) - same | 32-QFN (5x5 mm) - same | 32-QFN (5x5 mm) - same | 32-QFN (5x5 mm) - same |
| Brand | Microchip Technology (Atmel) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 8KB (4K x 16) | 8KB (4K x 16) | 8KB (4K x 16) | 16KB (8K x 16) | 32KB (16K x 16) |
| Supply Voltage | 4.5 V to 5.5 V | 1.8 V to 5.5 V (picoPower, speed-derated at low V) | 1.8 V to 5.5 V (picoPower) | 1.8 V to 5.5 V (picoPower) | 1.8 V to 5.5 V (picoPower) |
| I/O Lines | 23 | 23 | 23 | 23 | 23 |
| Power Class | Standard ATmega88 generation | picoPower (lower sleep current) | picoPower (lower sleep current) | picoPower | picoPower |
| Lifecycle Status | Active | Active (recommended for new designs) | Active | Active | Active |
Key Differentiators
- 5V-native operation at full clock speed (vs ATMEGA328P-MU)
- Lowest unit cost in the same QFN-32 footprint (vs ATMEGA168PA-MU)
- Trade-off: higher power than picoPower successors (vs ATMEGA88PA-15MZ)
Design Notes
The ATMEGA88-15MT requires a 4.5V to 5.5V supply at its full 16 MHz speed grade. Decouple both VCC pins (4 and 6) and AVCC (pin 18) with 100nF ceramic capacitors placed within 2 mm of each pin, plus one 4.7uF-10uF bulk capacitor per supply rail. Tie AVCC to VCC through an LC filter (10uH + 100nF) when using the ADC, and never leave AVCC unconnected even in digital-only designs - the datasheet requires it for correct operation of port C.
The 32-QFN (5x5 mm) MLF-style package has an exposed die pad under the center that must be soldered to a grounded PCB pad array for mechanical reliability and thermal performance; perimeter pins alone are not sufficient per manufacturer assembly guidelines. Use via stitching (5-9 vias) under the pad to the ground plane. QFN pins are on 0.5 mm pitch - specify a solder stencil with 90-100% aperture and review the land pattern against the manufacturer's application note before release to fabrication.
Pin 29 (PC6/RESET) is active-low and doubles as the ISP programming reset; do not connect strong pull-downs or capacitors larger than 100nF on it, or ISP programming will fail. When using PB6/PB7 (pins 7-8) for a crystal, fit the load capacitors per the crystal datasheet (typically 12-22pF); when unused as GPIO, PB6/PB7 have limited output drive and should be avoided for critical signals. For new designs, also evaluate the ATMEGA88PA-15MZ - same footprint, lower power, better long-term availability.
Compliance Information
Compliance status not stated in the provided verified web data; confirm RoHS/REACH status on the Microchip product page or distributor compliance certificates before procurement.
