ATMEGA88-15MT2 - 8KB Flash AVR MCU 150C TQFP-32 | Microchip
MPN: ATMEGA88-15MT2 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.95 | $1.95 |
| 10 | $1.76 | $17.60 |
| 100 | $1.45 | $145.00 |
| 500 | $1.24 | $620.00 |
| 1,000 | $1.08 | $1,080.00 |
ATMEGA88-15MT2 Overview
An AVR microcontroller is a class of 8-bit reduced-instruction-set (RISC) MCUs in the wider microcontroller and embedded processor hierarchy, combining CPU, program Flash, data SRAM, EEPROM, and peripherals on a single chip. The ATmega88 sits in the middle of the ATmega48/88/168 family: identical pinout and peripherals, differing only in memory density (4 KB / 8 KB / 16 KB Flash).
Key features include 130 powerful instructions with mostly single-cycle execution, 32 general purpose working registers, 23 programmable I/O lines, three flexible timer/counters, a 10-bit ADC, and read-while-write ISP Flash. The advanced RISC Harvard architecture delivers up to 16 MIPS throughput at 16 MHz, enabling computationally demanding control loops in a small footprint.
Technical depth: the core executes most instructions in a single clock cycle, and the picoPower technology suite provides multiple sleep modes (idle, ADC noise reduction, power-down, power-save, standby) for aggressive energy budgets. In-system programmability with read-while-write support allows firmware updates in the field via SPI.
Typical applications include automotive body and powertrain auxiliary modules, industrial control nodes exposed to high ambient temperatures, sensor interfaces using the 10-bit ADC, and motor or lighting control where the -15 grade's 150 degrees C rating removes derating concerns.
Design consideration: because the -15 grade is specified at elevated junction temperature, verify total power dissipation so the TQFP-32 thermal resistance keeps junction temperature within the 150 degrees C rating.
This page synthesizes cross-reference data, drop-in alternatives, pinout detail, and design guidance not consolidated in the manufacturer datasheet.
Drop-in alternatives for ATMEGA88-15MT2 — 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 ATMEGA88-15MT2 (same form factor and footprint) — differing in Instruction Set, Package Type, Program Memory Size, Program Memory Type, EEPROM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATMEGA88-15AT
✅ Drop-In✓ In Stock
$1.15 / Unit
View Datasheet →ATMEGA88-15AD
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →ATMEGA88A-15AT
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
ATMEGA168-15AT
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.58 / Unit
View Datasheet →ATMEGA48-15AT
✅ Drop-In📋 Reference alternative (not in catalog)
ATMEGA8-16AI
✅ Drop-In✓ In Stock
$2.46 / Unit
View Datasheet →ATMEGA168PA-15AZ
✅ Drop-In📋 Reference alternative (not in catalog)
ATMEGA88PA-15AZ
✅ Drop-In📋 Reference alternative (not in catalog)
ATMEGA88-15MT2 Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit AVR RISC |
| Flash Memory | 8 KB ISP Flash (read-while-write) |
| EEPROM | 512 B |
| SRAM | 1 KB |
| General Purpose I/O Lines | 23 |
| General Purpose Working Registers | 32 |
| Timer/Counters | 3 flexible timer/counters |
| Clock Speed | 16 MHz (Mouser lists 15 MHz max grade) |
| Supply Voltage | 4.5 V to 5.5 V |
| Operating Temperature (MT2 grade) | up to 150 degrees C |
| Package Type | TQFP 7 x 7 mm, 1 mm height, 0.80 mm pitch, 32-pin (32A) |
| Instructions | 130 powerful instructions, most single-cycle |
| Mounting Type | Surface Mount |
| Lifecycle Stage | ACTIVE |
| Qualification | AEC-Q100 verified (quality and reliability verified during product qualification) |
| Newer Device Available | ATMEGA88A |
ATMEGA88-15MT2 Pin Configuration
| Pin 1 | PD3 — Port D, bit 3 (GPIO / PWM output) |
| Pin 2 | PD4 — Port D, bit 4 (GPIO / Timer0 XCK) |
| Pin 3 | GND — Ground |
| Pin 4 | VCC — Digital supply voltage (4.5 V to 5.5 V) |
| Pin 5 | GND — Ground |
| Pin 6 | VCC — Digital supply voltage |
| Pin 7 | PB6 — Port B, bit 6 / XTAL1 (clock input when crystal used) |
| Pin 8 | PB7 — Port B, bit 7 / XTAL2 (clock output when crystal used) |
| Pin 9 | PD5 — Port D, bit 5 (GPIO / Timer0 T1) |
| Pin 10 | PD6 — Port D, bit 6 (GPIO / Timer0 overflow output AIN0) |
| Pin 11 | PD7 — Port D, bit 7 (GPIO / AIN1 analog comparator input) |
| Pin 12 | PB0 — Port B, bit 0 (GPIO / XCK0, T0) |
| Pin 13 | PB1 — Port B, bit 1 (GPIO / T1, PWM OC1A) |
| Pin 14 | PB2 — Port B, bit 2 (GPIO / SS, PWM OC1B) |
| Pin 15 | PB3 — Port B, bit 3 (GPIO / MOSI, PWM 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 (connect to VCC through low-pass filter) |
| Pin 19 | ADC6 — ADC input channel 6 (dedicated analog input) |
| Pin 20 | AREF — Analog reference voltage for ADC |
| Pin 21 | GND — Ground |
| Pin 22 | ADC7 — ADC input channel 7 (dedicated analog input) |
| Pin 23 | PC0 — Port C, bit 0 (GPIO / ADC8 input / I2C SCL) |
| Pin 24 | PC1 — Port C, bit 1 (GPIO / ADC9 input / I2C SDA) |
| Pin 25 | PC2 — Port C, bit 2 (GPIO / ADC10 input / TCK) |
| Pin 26 | PC3 — Port C, bit 3 (GPIO / ADC11 input / TMS) |
| Pin 27 | PC4 — Port C, bit 4 (GPIO / ADC12 input / TDO) |
| Pin 28 | PC5 — Port C, bit 5 (GPIO / ADC13 input / TDI) |
| Pin 29 | PC6 — Port C, bit 6 / RESET (active-low reset input) |
| Pin 30 | PD0 — Port D, bit 0 (GPIO / USART RXD) |
| Pin 31 | PD1 — Port D, bit 1 (GPIO / USART TXD) |
| Pin 32 | PD2 — Port D, bit 2 (GPIO / INT0 external interrupt, USART XCK) |
Typical Applications
ATMEGA88-15MT2 is suitable for 6 applications: Automotive Body Control Modules, High-Temperature Industrial Control, Sensor Interfaces and Data Acquisition, Motor and Lighting Control, Firmware-Upgradeable Embedded Products, Home Appliances and Consumer Control Boards.
Automotive Body Control Modules
The ATMEGA88-15MT2 fits automotive body and comfort modules because its MT2 grade carries a 150 degrees C rating and the ATmega88 family has quality and reliability verified during regular product qualification per AEC-Q100, per the manufacturer datasheet. Underhood lighting drivers, wiper controllers, and HVAC actuators regularly see ambient temperatures above standard industrial limits, where the ATMEGA88-15AT grade cannot be used. In a typical module the AVR reads switch and sensor inputs on its 23 GPIO lines, drives loads through three flexible timer/counters (PWM outputs), and reports status over LIN or UART. Placing a 100 nF decoupling capacitor on each VCC pin plus a 10 uF bulk capacitor maintains ADC and clock integrity in the noisy 12 V vehicle environment. The main trade-off is supply cost: at 4.5 V to 5.5 V the part needs a regulated 5 V rail from the vehicle's clamped supply.
Recommended
High-Temperature Industrial Control
Industrial machinery near ovens, presses, forging lines, and foundries produces ambient temperatures that derate ordinary MCUs; the ATMEGA88-15MT2's 150 degrees C rating lets designers mount the controller close to the heat source without exotic cooling. The 8-bit AVR RISC core executes 130 instructions, most in a single clock cycle, delivering up to 16 MIPS at 16 MHz for deterministic PID loops. The 10-bit ADC with ADC6/ADC7 analog inputs reads thermocouple signal conditioning or potentiometer feedback, while the three timer/counters generate PWM for heater and motor control. With 8 KB ISP Flash supporting read-while-write, a bootloader can hold calibration tables in the remaining Flash pages, and the 512 B EEPROM retains setpoints across power cycles. Designers should budget junction temperature using the TQFP-32 thermal resistance and total dissipation to stay within the 150 degrees C specification.
Recommended
Sensor Interfaces and Data Acquisition
The ATMEGA88-15MT2 serves sensor front-ends through its on-chip 10-bit ADC, 6-channel multiplexer with dedicated ADC6/ADC7 analog pins, separate AVCC supply pin, and AREF reference input that isolate analog performance from digital switching noise. At 5 V supply the ADC resolves roughly 4.9 mV per LSB, adequate for thermistors, potentiometers, pressure bridges after amplification, and ratiometric sensors. The picoPower sleep modes (ADC noise reduction mode stops the CPU during conversions) lower conversion noise and average current in battery-adjacent industrial sensing. The 1 KB SRAM buffers sample blocks and the 512 B EEPROM stores calibration constants. In high-temperature sensor pods, the 150 degrees C MT2 grade eliminates local derating; in a typical pod the AVR samples, filters, and streams data over SPI or UART to a gateway, using the 32 general purpose registers to keep filter state in registers rather than RAM.
Recommended
Motor and Lighting Control
The ATMEGA88-15MT2 generates control waveforms for small DC motors, stepper drivers, and LED lighting using its three flexible timer/counters, which provide multiple PWM channels with adjustable resolution and frequency. Single-cycle RISC execution at up to 16 MHz allows interrupt-driven commutation and current-loop control with microsecond latency. The 23 GPIO lines drive gate drivers or MOSFET pre-drivers directly through Port B/C/D, and the 10-bit ADC reads back current shunt and back-EMF signals. The 150 degrees C rating suits lighting ballasts mounted inside luminaires and motor driver boards near heat sources where standard-grade parts would exceed their limits. A common layout uses timer1 for high-resolution PWM, timer0 for scheduling, and timer2 for a watchdog-independent heartbeat; decouple VCC pins with 100 nF close to the package and keep the PWM return path away from the AREF/ADC traces to preserve conversion accuracy.
Recommended
Firmware-Upgradeable Embedded Products
The ATMEGA88-15MT2's 8 KB ISP Flash with read-while-write capability makes it a strong fit for products that require field firmware updates: a bootloader occupying the upper Flash pages can receive new firmware over UART, SPI, or I2C, erase lower pages, and reprogram them while continuing to execute. The 512 B EEPROM stores serial numbers, configuration, and rollback pointers that survive updates and power loss. Because the ATmega48/88/168 family is pin-compatible in the same TQFP-32 footprint, one PCB can be populated with 4 KB, 8 KB, or 16 KB parts depending on firmware growth over the product life - IC-Components notes ATMEGA48, ATMEGA88, and ATMEGA168 as equivalent models in the series. The 16 MHz clock gives 16 MIPS headroom for protocol handling, and the 150 degrees C MT2 grade extends this capability to enclosed, thermally stressed products such as industrial gateways and lighting controllers.
Recommended
Home Appliances and Consumer Control Boards
Appliance control boards - coffee machines, dishwashers, fans, and small pumps - benefit from the ATMEGA88-15MT2 when the board sits near heating elements: the 150 degrees C grade tolerates enclosures that exceed the 85 degrees C limit of standard AT variants. The 23 GPIO lines handle membrane-key scanning, relay and triac driving via timer PWM, and buzzer output; the 10-bit ADC reads NTC temperature sensors directly with a divider network. Single-cycle execution supports responsive user interfaces and safe interlock logic simultaneously, and the 1 KB SRAM is ample for display buffers and state machines. The 512 B EEPROM retains user settings across power cycles. Designers commonly use timer2 in asynchronous mode with a 32.768 kHz watch crystal for accurate timekeeping during standby. Overall BOM cost stays low since the MCU integrates ADC, timers, and oscillator options in one TQFP-32 chip.
Recommended
Recommended Products Summary
Engineering reference data for ATMEGA88-15MT2 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATMEGA88-15AT | ATMEGA168PA-15AZ | ATMEGA48-15AT | ATMEGA8-16AI |
|---|---|---|---|---|---|
| Package | TQFP-32 (32A) 7 x 7 mm, 0.80 mm pitch | TQFP-32 (32A) - same footprint | TQFP-32 (32A) - same footprint | TQFP-32 (32A) - same footprint | TQFP-32 (32A) - same footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 8 KB ISP Flash | 8 KB ISP Flash | 16 KB ISP Flash | 4 KB ISP Flash | 8 KB ISP Flash |
| SRAM | 1 KB | 1 KB | 2 KB | 512 B | 1 KB |
| EEPROM | 512 B | 512 B | 1 KB | 256 B | 512 B |
| Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 1.8 V to 5.5 V (per FindIC listing) | 4.5 V to 5.5 V | 4.0 V to 5.5 V (16 MHz operation) |
| Temperature Grade | 150 degrees C (MT2 grade) | -40 to +85 degrees C industrial (AT grade) | -40 to +125 degrees C automotive (AZ grade) | -40 to +85 degrees C industrial (AT grade) | -40 to +85 degrees C industrial (AI grade) |
| Clock Speed | 16 MHz | 16 MHz | 16 MHz (per FindIC listing) | 16 MHz | 16 MHz |
Key Differentiators
- 150 degrees C maximum temperature rating (vs ATMEGA88-15AT)
- AEC-Q100 family qualification (vs ATMEGA48-15AT)
- Cost-effective memory class with upgrade path (vs ATMEGA168PA-15AZ)
- Balanced memory/peripheral set vs legacy ATmega8 (vs ATMEGA8-16AI)
Design Notes
Connect AVCC (pin 18) to VCC through a low-pass filter (typically 10 uH inductor and 100 nF capacitor) even if the ADC is unused - the datasheet requires AVCC not to differ from VCC by more than 0.3 V. Place 100 nF ceramic decoupling capacitors at both VCC pins (4 and 6) within 5 mm of the package. The 4.5 V to 5.5 V supply range means a well-regulated 5 V rail from a buck converter followed by an LDO gives the cleanest ADC results in noisy automotive environments.
Estimated: the MT2 grade is rated to 150 degrees C junction temperature. With the TQFP-32 (7 x 7 mm) thermal resistance of roughly 100 C/W on a minimal 2-layer board (typical JEDEC value for this package class - verify against the datasheet thermal appendix), dissipating 50 mA at 5 V (0.25 W) yields about a 25 C junction rise, allowing ambient up to about 125 C without copper enhancement. For ambients above 100 C, add ground-plane copper under the package and verify total dissipation (I/O currents included) against the 150 C rating.
PC6 (pin 29) is RESET, not a GPIO, unless the RSTDISBL fuse is set - and disabling reset prevents further ISP programming, bricking the board if the bootloader fails. Keep a 10 kOhm pull-up on RESET and route an ISP header (MOSI/MISO/SCK/RESET) to allow field updates; the read-while-write Flash supports bootloader-based updates. When migrating from ATMEGA88 to ATMEGA88A, review the migration appnote and errata since interrupt vector behavior and electrical characteristics were updated. The device header explicitly flags ATMEGA88A as the newer device.
Keep the ADC6/ADC7 (pins 19, 22) and AREF (pin 20) traces short and away from PWM/USART signals. AREF should carry only a 100 nF capacitor to ground; never connect it directly to a voltage source without series impedance. If an external crystal is used on PB6/PB7 (pins 7-8), keep the crystal within 10 mm of the pins with proper load capacitors. For the 0.80 mm pitch TQFP-32, escape traces of 0.2 mm width with 0.2 mm clearance allow single break-out routing on a 2-layer board.
Compliance Information
The ATmega88-15 family datasheet states that quality and reliability of ATmega48/88/168-15 versions have been verified during regular product qualification as per AEC-Q100. RoHS/REACH/lead-free status for this specific suffix is not stated in the provided data.
