ATMEGA88PA-MU - 8-Bit AVR MCU 20MHz 8KB Flash | Microchip
部品番号: ATMEGA88PA-MU ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 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 |
ATMEGA88PA-MU 概要
An 8-bit microcontroller (MCU) is a complete computer-on-a-chip that integrates a processor core, program memory, data memory, and peripherals such as timers, serial interfaces, and ADCs on a single die. MCUs sit at the lowest tier of the embedded processing hierarchy - below application processors and SoCs - and are the standard choice for cost- and power-sensitive control tasks in embedded systems.
Key features of the ATMEGA88PA include the advanced AVR RISC architecture executing most instructions in a single clock cycle (130 powerful instructions), the picoPower technology for microamp-level sleep currents, and 23 general-purpose I/O lines. The core provides 32 general-purpose working registers and three flexible timer/counters with compare modes, plus internal and external interrupt sources.
Technical depth comes from the Harvard architecture separating program and data buses, read-while-write Flash for self-programming, and a rich peripheral set including a 10-bit ADC, SPI, two-wire interface (I2C-compatible), and USART. The PA suffix denotes the picoPower revision with improved efficiency over the original ATmega88, and debugWIRE supports single-wire in-circuit debugging and ICSP programming.
Typical applications include industrial sensor nodes, consumer appliance control boards, battery-powered metering devices, and hobby/embedded products where 8 KB of Flash and 20 MHz throughput are sufficient. Its 1.8 V operation directly supports two-cell battery designs.
A key design consideration: the VQFN-32 exposed-pad package needs a solid ground-plane via array on the center pad for both thermal relief and reliable solder joints during reflow.
This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
ドロップイン代替品: ATMEGA88PA-MU — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: ATMEGA88PA-MU （同一形状・フットプリント） — 相違点: Package, Communication Interfaces, Operating Temperature, Timers, Flash Memory.
クイック比較ツール — 並列比較する代替部品を選択:
ATMEGA88-20MU
✅ ドロップイン✓ 在庫あり
価格はお問い合わせください
データシートを見る →ATMEGA88PA-CCUR
✅ ドロップイン✓ 在庫あり
$1.08 / 個
データシートを見る →ATMEGA48PA-MUR
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$0.98 / 個
データシートを見る →ATMEGA168PA-MU
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$1.72 / 個
データシートを見る →ATMEGA328P-MU
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$2.85 / 個
データシートを見る →ATMEGA88PA-MU 最大定格＆電気的特性
| Core Processor | AVR |
| Core Size | 8-Bit |
| 最大クロック周波数 | 20 MHz |
| Flash Memory | 8 KB (4K x 16) |
| EEPROM | 512 B |
| SRAM | 1 KB |
| Supply Voltage Range | 1.8 V to 5.5 V |
| General Purpose I/O | 23 |
| Working Registers | 32 |
| Timers/Counters | 3 |
| Instruction Set | 130 instructions, most single-cycle |
| Technology | picoPower |
| Programming Interface | ICSP / debugWIRE |
| パッケージ | 32-VQFN (5x5 mm) |
| 実装タイプ | Surface Mount |
| Life Cycle Stage | ACTIVE |
ATMEGA88PA-MU ピン構成
| ピン 1 | PD3 — Port D bit 3 (GPIO) |
| ピン 2 | PD4 — Port D bit 4 (GPIO / XCK/T0) |
| ピン 3 | GND — Ground |
| ピン 4 | VCC — Digital supply voltage |
| ピン 5 | GND — Ground |
| ピン 6 | VCC — Digital supply voltage |
| ピン 7 | PB6 — Port B bit 6 / XTAL1 / TOSC1 |
| ピン 8 | PB7 — Port B bit 7 / XTAL2 / TOSC2 |
| ピン 9 | PD5 — Port D bit 5 (GPIO / T1) |
| ピン 10 | PD6 — Port D bit 6 (GPIO / AIN0) |
| ピン 11 | PD7 — Port D bit 7 (GPIO / AIN1) |
| ピン 12 | PB0 — Port B bit 0 (GPIO / ICP1 / CLKO) |
| ピン 13 | PB1 — Port B bit 1 (GPIO / OC1A) |
| ピン 14 | PB2 — Port B bit 2 (GPIO / SS / OC1B) |
| ピン 15 | PB3 — Port B bit 3 (GPIO / MOSI / OC2A) |
| ピン 16 | PB4 — Port B bit 4 (GPIO / MISO) |
| ピン 17 | PB5 — Port B bit 5 (GPIO / SCK) |
| ピン 18 | AVCC — ADC supply voltage |
| ピン 19 | ADC6 — Dedicated ADC input channel 6 |
| ピン 20 | AREF — ADC reference voltage |
| ピン 21 | GND — Ground |
| ピン 22 | ADC7 — Dedicated ADC input channel 7 |
| ピン 23 | PC0 — Port C bit 0 (GPIO / ADC0 / SCL) |
| ピン 24 | PC1 — Port C bit 1 (GPIO / ADC1 / SDA) |
| ピン 25 | PC2 — Port C bit 2 (GPIO / ADC2) |
| ピン 26 | PC3 — Port C bit 3 (GPIO / ADC3) |
| ピン 27 | PC4 — Port C bit 4 (GPIO / ADC4 / SDA) |
| ピン 28 | PC5 — Port C bit 5 (GPIO / ADC5 / SCL) |
| ピン 29 | PC6 — RESET (active low, also PC6 GPIO when reset disabled) |
| ピン 30 | PD0 — Port D bit 0 (GPIO / RXD) |
| ピン 31 | PD1 — Port D bit 1 (GPIO / TXD) |
| ピン 32 | PD2 — Port D bit 2 (GPIO / INT0) |
主な用途
ATMEGA88PA-MU の用途: 6 件s: Industrial Sensor Nodes, Battery-Powered Consumer Devices, Home Appliance Control Boards, Hobby and Maker Electronics, Metering and Measurement Instruments, Automotive Body Sub-Modules.
Industrial Sensor Nodes
The ATMEGA88PA-MU fits industrial sensor nodes because its 10-bit ADC, 23 GPIO lines, and picoPower sleep modes cover the full signal chain of a powered transducer endpoint. Its 1.8-5.5 V input accepts raw 24 V-derived or 5 V industrial rails through a simple regulator, and the USART/SPI/two-wire peripherals connect to RS-485 transceivers or local displays. In typical use, the MCU samples the sensor at low duty cycle, sleeps in power-down between conversions, and reports over serial - the picoPower revision cuts average current substantially versus the original ATmega88, extending loop-powered or battery-backed node life. The 8 KB Flash comfortably holds acquisition, filtering, and Modus-style protocol stacks for single-channel nodes.
おすすめ
Battery-Powered Consumer Devices
For battery-powered consumer products such as remote controls, small meters, and portable gadgets, the ATMEGA88PA-MU offers 1.8 V operation directly from two-cell battery stacks plus picoPower sleep currents that dominate battery-life math. In these designs the MCU spends most of its life in power-down, waking on pin-change interrupts from buttons or periodic watchdog timeouts; the PA revision specifically improved sleep-mode efficiency relative to the standard ATmega88, which is why Microchip introduced it as a direct upgrade. The 512 B EEPROM stores user settings and calibration across battery swaps. Its 20 MHz capability is available when awake for responsive UI scanning, but the effective average current stays in the microamp range for years of coin-cell or AA battery service.
おすすめ
Home Appliance Control Boards
White-goods and small-appliance control boards are a classic ATmega88 application: the part drives LED segments and relays through its 23 GPIO, reads user inputs with pin-change interrupts, and measures temperature or motor feedback via the 10-bit ADC. The 1.8-5.5 V supply tolerates unregulated transformer-derived rails common in appliance designs, and the 20 MHz clock delivers enough headroom for triac phase-angle or fan PWM control using its three timer/counters with compare modes. The wide industrial temperature envelope and active lifecycle status simplify long-life appliance qualification. Because boards in this segment are cost-optimized, the ATMEGA88PA-MU's mid-range memory is the sweet spot above the ATmega48PA yet below the premium of the ATmega328P.
おすすめ
Hobby and Maker Electronics
The ATmega88 family is the direct ancestor of the Arduino Uno's ATmega328P, so the ATMEGA88PA-MU benefits from the same mature toolchain, thousands of tutorials, and AVR-GCC/avrdude support. Makers use it where 8 KB Flash suffices - robot sensor boards, custom keyboards, LED matrix controllers, and bench gadgets. ICSP programming works with inexpensive USBasp programmers and Microchip's MPLAB SNAP, while debugWIRE gives single-wire debugging through the reset line. The 32-VQFN 5x5 package suits compact custom PCBs, and the same footprint can later accept a pin-compatible ATMEGA328P-MU if a project outgrows 8 KB, protecting layout investment as firmware scales.
おすすめ
Metering and Measurement Instruments
Energy meters, handheld gauges, and environmental monitors exploit the ATMEGA88PA-MU's 10-bit ADC with its dedicated ADC6/ADC7 input pins plus the internal bandgap reference for ratiometric measurements. The 512 B EEPROM is sized well for storing calibration coefficients, and the EEPROM's endurance supports periodic recalibration logging. Its three timer/counters generate measurement gates and PWM DAC-like outputs for analog meter drives. Because measurement products often run from mains-derived supplies with generous power budgets, the full 20 MHz clock can run continuously for responsive data processing, while the picoPower design still helps in battery-backup modes that keep the meter's display and clock alive during outages.
おすすめ
Automotive Body Sub-Modules
Non-safety automotive body electronics - seat memory, mirror control, lighting sequencers, and tire-pressure sensor boards - historically used ATmega88 devices because of the pin-change interrupt set, 5 V-tolerant I/O architecture, and robust supply range. The ATMEGA88PA-MU handles LIN-style or K-line communication through its USART, switches loads via timer-driven PWM to MOSFET drivers, and sleeps in power-down with the key off. Note that the standard ATMEGA88PA-MU is not AEC-Q100-qualified, so for production automotive programs designers should confirm grade requirements with Microchip or select appropriately qualified variants; the part remains widely used in motorsport, retrofit, and non-OEM automotive electronics where qualification is arranged at the system level.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: ATMEGA88PA-MU — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | ATMEGA88-20MU | ATMEGA48PA-MU | ATMEGA168PA-MU | ATMEGA328P-MU |
|---|---|---|---|---|---|
| Package | 32-VQFN (5x5 mm) | 32-VQFN (5x5 mm) - same | 32-VQFN (5x5 mm) - same | 32-VQFN (5x5 mm) - same | 32-VQFN (5x5 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 8 KB | 8 KB | 4 KB | 16 KB | 32 KB |
| SRAM | 1 KB | 1 KB | 512 B | 1 KB | 2 KB |
| EEPROM | 512 B | 512 B | 256 B | 512 B | 1 KB |
| Max Clock | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| picoPower (PA die) | Yes | No (standard die) | Yes | Yes | P (low power) die |
主な差別化要因
- picoPower die reduces sleep current （vs ATMEGA88-20MU)
- EEPROM retained where ATtiny88 omits it （vs ATTINY88-MU)
- Cost-optimal memory tier （vs ATMEGA328P-MU)
- Pin-compatible upgrade path to 16 KB （vs ATMEGA168PA-MU)
設計ノート
The 32-VQFN 5x5 mm exposed pad requires a solder-mask-defined land pattern with an array of thermal vias (typically 4-9, 0.3 mm diameter) plugged or tented under the center pad. Insufficient paste on the exposed pad is the most common cause of reflow open-circuits on this package - use a perforated stencil pattern (roughly 50-70% paste coverage on the pad) rather than a full square aperture. Signal pins on 0.5 mm pitch need standard QFN courtyard clearances for rework access.
Decouple each VCC pin (pins 4 and 6) with a 100 nF ceramic placed within 2 mm of the pin, plus one bulk 4.7-10 uF per board. Tie AVCC (pin 18) to VCC through a low-pass filter (10 nF local cap; optional LC if analog accuracy matters) - the datasheet specifies AVCC must not differ from VCC by more than 0.3 V. Use AREF with a 100 nF cap to ground when relying on the internal reference, and never drive AREF from an external source while internal reference mode is selected.
PC6 is RESET by default; enabling it as GPIO by clearing the RSTDISBL fuse is effectively irreversible without high-voltage parallel programming - avoid it unless you have an HV programmer. PB6/PB7 default to crystal functions; if using them as GPIO with the internal RC oscillator, confirm CKOUT and fuse settings. When migrating from ATMEGA88 to ATMEGA88PA, review Microchip application note AVR094 and the PA errata sheet: signature bytes differ, so old bootloader/flashing scripts checking signatures must be updated.
Estimated: at 5 V, 20 MHz with all GPIO sourcing moderate load, core consumption stays in the tens of milliamps (roughly 100-200 mW), so no heatsinking is required. Only switch high-current loads through external transistors - the 40 mA-class per-pin I/O rating is not intended for direct relay or LED-chain drive. Keep the exposed pad well soldered; it is also the primary thermal path for the die.
コンプライアンス情報
FindIC listing describes the part as GREEN package (RoHS-compatible, lead-free). REACH and halogen-free status not stated in provided data.
