ATMEGA88-15MT1 - 8-bit AVR MCU 16MHz 8KB Flash QFN-32 | Microchip
MPN: ATMEGA88-15MT1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.1 | $2.10 |
| 10 | $1.89 | $18.90 |
| 100 | $1.62 | $162.00 |
| 500 | $1.44 | $720.00 |
| 1,000 | $1.26 | $1,260.00 |
ATMEGA88-15MT1 Overview
An 8-bit microcontroller (MCU) is a single integrated circuit that contains a processor core, memory, and programmable input/output peripherals on one die. Within the embedded systems hierarchy, the ATMEGA88-15MT1 belongs to the AVR ATmega family, which sits under the broader categories of microcontrollers, embedded processors, and semiconductors. MCUs of this class are the workhorses of cost-sensitive embedded control, replacing discrete logic and analog control loops with software-defined behavior.
Key features include the Advanced RISC AVR architecture with 130 powerful instructions, most executing in a single clock cycle; 512 bytes of EEPROM for non-volatile data storage; and hardware support for In-System Programming (ISP), allowing firmware updates without removing the chip from the board. The 32-VFQFN exposed-pad package provides excellent thermal and electrical performance for space-constrained designs.
Architecturally, the AVR core uses a Harvard structure with separate program and data buses, enabling single-cycle instruction fetch and execution. Peripheral sets typically include an 8-bit and a 16-bit timer, a 10-bit ADC, USART, SPI, and two-wire interface (I2C), allowing the device to service sensing, communication, and actuation tasks concurrently. Per the hotenda listing, the part carries AEC-Q100 automotive qualification, supporting deployment in harsh environments.
Typical applications include automotive body and comfort control modules, industrial sensor nodes and motor control boards, and consumer appliance control panels. The 16 MHz rating and 23 I/O lines give enough headroom for most 8-bit control tasks without moving to larger, costlier devices.
A key design consideration is the 4.5V to 5.5V supply window: this 15-speed-grade part is rated for 16 MHz only across the 5V range, so designers targeting 3.3V or battery operation should evaluate the ATmega88V or picoPower ATmega88PA variants instead.
This page synthesizes distributor availability data, drop-in alternatives, pinout information, and practical design guidance not found in the manufacturer datasheet.
Drop-in alternatives for ATMEGA88-15MT1 — 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 ATMEGA88-15MT1 (same form factor and footprint) — differing in Package, Flash Memory, Supply Voltage Range, Core Processor, EEPROM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATMEGA88A-MU
✅ Drop-In📋 Reference alternative (not in catalog)
ATMEGA88PA-MU
✅ Drop-In✓ In Stock
$1.26 / 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 →ATMEGA48PA-MUR
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.98 / Unit
View Datasheet →ATMEGA88-15MT1 Maximum Ratings & Electrical Characteristics
| Core Architecture | AVR 8-bit RISC, 130 instructions |
| Program Memory (FLASH) | 8 KB (4K x 16) |
| SRAM | 1 KB |
| EEPROM | 512 B |
| Maximum Clock Frequency | 16 MHz |
| Supply Voltage Range | 4.5 V to 5.5 V |
| I/O Ports | 23 |
| Package | 32-VFQFN (5x5 mm) with exposed pad |
| Mounting Type | Surface Mount |
| Program Memory Type | FLASH (In-System Programmable) |
| Data Bus Width | 8 bit |
| Life Cycle Stage | ACTIVE |
| Qualification | Automotive, AEC-Q100 (per distributor listing) |
| Typical Peripherals | Timers, USART, SPI, I2C (TWI), 10-bit ADC |
ATMEGA88-15MT1 Pin Configuration
| Pin 1 | PD3 — Port D, bit 3 (GPIO) |
| Pin 2 | PD4 — Port D, bit 4 (GPIO / 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) |
| Pin 8 | PB7 — Port B, bit 7 (XTAL2 / TOSC2) |
| Pin 9 | PD5 — Port D, bit 5 (GPIO / T1) |
| Pin 10 | PD6 — Port D, bit 6 (GPIO / AIN0) |
| Pin 11 | PD7 — Port D, bit 7 (GPIO / AIN1) |
| Pin 12 | PB0 — Port B, bit 0 (GPIO / ICP1) |
| 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 (MOSI / OC2A) |
| Pin 16 | PB4 — Port B, bit 4 (MISO) |
| Pin 17 | PB5 — Port B, bit 5 (SCK) |
| Pin 18 | AVCC — ADC supply voltage |
| Pin 19 | ADC6 — ADC input channel 6 |
| Pin 20 | AREF — ADC analog reference |
| Pin 21 | GND — Ground |
| Pin 22 | ADC7 — ADC input channel 7 |
| Pin 23 | PC0 — Port C, bit 0 (ADC0) |
| Pin 24 | PC1 — Port C, bit 1 (ADC1) |
| Pin 25 | PC2 — Port C, bit 2 (ADC2) |
| Pin 26 | PC3 — Port C, bit 3 (ADC3) |
| Pin 27 | PC4 — Port C, bit 4 (ADC4 / SDA) |
| Pin 28 | PC5 — Port C, bit 5 (ADC5 / SCL) |
| Pin 29 | PC6 — Port C, bit 6 (RESET) |
| Pin 30 | PD0 — Port D, bit 0 (RXD) |
| Pin 31 | PD1 — Port D, bit 1 (TXD) |
| Pin 32 | PD2 — Port D, bit 2 (GPIO / INT0) |
Typical Applications
ATMEGA88-15MT1 is suitable for 6 applications: Automotive Body and Comfort Control, Industrial Sensor Nodes, Appliance and Consumer Control Panels, Battery Chargers and Power Management Boards, Motor Control - Small DC and Stepper Drives, Embedded Hobby and Prototype Systems (Arduino-Compatible).
Automotive Body and Comfort Control
The ATMEGA88-15MT1 fits automotive body control tasks because distributor listings identify it as AEC-Q100 automotive qualified, giving OEM-grade reliability assurance that standard commercial AVR parts lack. Its 16 MHz AVR core executes the interrupt-driven logic typical of door modules, seat controllers, and lighting functions with large margin, while 23 I/O lines directly drive relays, LEDs, and read switch inputs without port expanders. The 512B EEPROM stores calibration and fault-counter data across power cycles, and the hardware USART supports LIN-style serial diagnostics. Operating from the regulated 5V automotive rail at 4.5V-5.5V, the exposed-pad QFN-32 dissipates heat efficiently in confined modules; designers should implement proper transient and load-dump protection on all external-facing I/O.
Recommended
Industrial Sensor Nodes
For industrial sensor acquisition nodes, the ATMEGA88-15MT1's integrated 10-bit ADC, 16 MHz core, and 23 I/O lines allow direct connection of analog transducers and digital status inputs without external front-end controllers. The 8KB FLASH is sufficient for signal filtering, threshold detection, and Modbus- or UART-based reporting firmware, while 1KB SRAM buffers sample sets. The exposed-pad VFQFN (5x5 mm) keeps the node footprint small on DIN-rail or PCB-mounted sensor boards. Because the part runs at 4.5V-5.5V, it mates naturally with industrial 5V sensor supplies and 5V-tolerant logic; where 3V sensors are used, level shifting on I2C or SPI buses is required. The AEC-Q100 qualification listing adds derating confidence in electrically noisy factory environments.
Recommended
Appliance and Consumer Control Panels
Consumer appliance control panels benefit from the ATMEGA88-15MT1's balance of cost, integration, and package size. The 16 MHz single-cycle AVR core scans keypads, drives seven-segment or LCD displays, and sequences relays for motors and heaters in real time, while the 512B EEPROM retains user settings and cycle counters through power interruptions. Its 32-VFQFN (5x5 mm) package suits compact fascia controller boards, and surface-mount assembly keeps unit cost low at volume. The 4.5V-5.5V supply range aligns with transformer-derived or buck-derived 5V rails common in white goods. Developers should use the In-System Programming interface so firmware can be updated on the final assembly line without desoldering, reducing rework during product revisions.
Recommended
Battery Chargers and Power Management Boards
In smart charger and power-management boards, the ATMEGA88-15MT1 reads voltage and current through its 10-bit ADC, executes constant-current/constant-voltage charging state machines in its 8KB FLASH, and drives PWM output for the power stage at 16 MHz timer resolution. The 1KB SRAM supports logging and coulomb-counting arithmetic, and the 512B EEPROM preserves charge-history parameters. Operating at 4.5V-5.5V, the MCU is powered conveniently by the same 5V auxiliary rail used by gate drivers. The QFN-32 exposed-pad package provides a low-impedance ground return that helps analog measurement accuracy. Designers must implement careful ADC reference decoupling and layout separation between the PWM power path and the sense lines to keep conversions noise-free.
Recommended
Motor Control - Small DC and Stepper Drives
The ATMEGA88-15MT1 serves small DC and stepper motor control with its hardware timers generating phase-correct PWM at up to 16 MHz clock granularity, adequate for smooth low-speed stepper microstepping and brushed-DC speed loops. The 23 I/O lines directly sequence H-bridge driver inputs, while the ADC reads back current for closed-loop torque limiting inside the 8KB firmware footprint. Its 5V supply domain matches popular gate driver and H-bridge IC families, simplifying interfacing. The AEC-Q100 qualification noted in distributor listings extends suitability to automotive actuator controls such as mirror and throttle-position motors. Layout should keep the QFN exposed pad solidly grounded and place gate-driver decoupling within millimeters to suppress PWM switching transients from disturbing the ADC.
Recommended
Embedded Hobby and Prototype Systems (Arduino-Compatible)
Because the ATMEGA88 pin-compatible family (ATmega48/88/168/328) shares the same QFN-32 footprint, the ATMEGA88-15MT1 is an excellent low-cost target for prototype systems and Arduino-style designs where 8KB of program space suffices. The In-System Programming interface allows programming with common AVR ISP tools, and community toolchains such as the Arduino hardware packages for ATmega88 provide core support out of the box. The 16 MHz clock matches standard Arduino timing assumptions, so delay and serial libraries behave consistently at 4.5V-5.5V supplies. When a design later outgrows 8KB FLASH, the same PCB accepts ATMEGA168PA-MU or ATMEGA328P-MU without layout changes, making this part a deliberate scaling anchor in the ATmega QFN family.
Recommended
Recommended Products Summary
Engineering reference data for ATMEGA88-15MT1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATMEGA88A-MU | ATMEGA88PA-MU | ATMEGA168PA-MU | ATMEGA328P-MU | ATMEGA48PA-MU |
|---|---|---|---|---|---|---|
| Package | 32-VFQFN (5x5 mm) exposed pad | 32-VFQFN (5x5 mm) - same | 32-VFQFN (5x5 mm) - same | 32-VFQFN (5x5 mm) - same | 32-VFQFN (5x5 mm) - same | 32-VFQFN (5x5 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| FLASH Memory | 8 KB (4K x 16) | 8 KB | 8 KB | 16 KB | 32 KB | 4 KB |
| SRAM | 1 KB | 1 KB | 1 KB | 1 KB | 2 KB | 256 B |
| Max Clock Frequency | 16 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Supply Voltage | 4.5 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 |
| EEPROM | 512 B | 512 B | 512 B | 512 B | 1 KB | 256 B |
| Power Features | Standard ATmega88 die | Revised die, standard power | picoPower low-power | picoPower low-power | picoPower low-power | picoPower low-power |
| I/O Lines | 23 | 23 | 23 | 23 | 23 | 23 |
Key Differentiators
- AEC-Q100 automotive qualification (vs ATMEGA88A-MU)
- Lowest-cost point in the AVR QFN-32 family at 8KB (vs ATMEGA328P-MU)
- Same footprint as larger memory upgrades (vs ATMEGA168PA-MU)
Design Notes
The -15MT1 is a 5V-only speed grade: its 16 MHz rating is valid across 4.5V-5.5V per the digchip specification data. Do not run this part from a 3.3V rail expecting full-speed operation - below 4.5V, datasheet timing is not guaranteed and flash reads can be corrupted. If your board also contains 3.3V peripherals, use level shifters on the I2C/SPI/USART lines rather than overvolting the peripherals, or select the ATMEGA88PA-MU alternative with its 1.8V-5.5V range.
Connect all VCC pins (4, 6) and AVCC (18) to the 5V rail with individual 100 nF ceramic decoupling capacitors placed within 2-3 mm of each pin, and tie all GND pins (3, 5, 21) plus the exposed pad solidly to the ground plane with multiple vias. AVCC should be filtered (e.g., an LC or RC network) when ADC accuracy matters, since digital switching noise on AVCC directly degrades conversion results. The AREF pin (20) needs its own 100 nF capacitor to ground; never drive it with a low-impedance source without a series resistor.
PC6 (pin 29) is RESET by default - do not use it as a general-purpose I/O unless you disable reset programming entirely, which permanently removes ISP reprogramming capability. When migrating firmware to the ATMEGA88A or PA revisions, verify fuse and register defaults against the newer datasheets, since die revisions occasionally change unimplemented-bit behavior. Also set the clock fuses correctly: shipping parts default to the internal 8 MHz RC oscillator divided to 1 MHz, not the external 16 MHz crystal.
Estimated: an ATmega88 running at 16 MHz from 5V typically draws only 5-10 mA active, dissipating roughly 25-50 mW - negligible for the VFQFN exposed pad. Thermal design only becomes a concern when multiple I/O pins source high LED or relay-driver currents simultaneously; in that case, compute total power as supply current plus I/O pin dissipation and verify the junction stays within the datasheet maximum. For most control applications, a well-via-ed ground pad provides ample thermal margin without a heatsink.
Compliance Information
AEC-Q100 automotive qualification stated in Hotenda distributor listing. RoHS/REACH/lead-free status not stated in the provided verified data.
