ATMEGA8535-16MI - 8-bit AVR MCU 16MHz 8KB Flash | Microchip
部品番号: ATMEGA8535-16MI ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $5.1 | $5.10 |
| 10 | $4.6 | $46.00 |
| 100 | $4.1 | $410.00 |
| 500 | $3.7 | $1,850.00 |
| 1,000 | $3.35 | $3,350.00 |
ATMEGA8535-16MI 概要
A microcontroller unit (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals such as timers, ADCs, and communication interfaces. Within the semiconductor hierarchy, the ATmega8535 belongs to the AVR ATmega family of 8-bit microcontrollers, positioned under the broader categories of embedded processors and integrated circuits. AVRs use a Harvard architecture with most single-cycle instructions.
Key features include an advanced RISC architecture with 130 powerful instructions, most executing in a single clock cycle; 32 x 8 general-purpose working registers; fully static operation up to 16 MHz; and self-programming Flash supporting boot-code operation. The 8-channel 10-bit ADC enables direct analog sensor interfacing, while three hardware timers/PWM channels support motor control and precision timing tasks.
Architecturally, the ATmega8535 combines the AVR enhanced RISC core with separate program and data buses, allowing one instruction fetch and execution per clock. Operating voltage is 4.5V to 5.5V, with an industrial temperature range of -40C to +85C for the MI (VQFN) grade.
Typical applications include industrial automation, consumer electronics, sensor acquisition systems, motor control, and embedded control nodes where an ADC-rich, 5V-tolerant MCU is required.
Design consideration: budget Flash and SRAM carefully - 8KB Flash and 512B SRAM suit compact C or assembly firmware but not large RTOS-based designs; consider ATmega64/128 for larger code.
This page synthesizes distributor pricing context, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
ドロップイン代替品: ATMEGA8535-16MI — 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: ATMEGA8535-16MI （同一形状・フットプリント） — 相違点: Package, Throughput, Serial Interfaces, Timers, RoHS Status.
クイック比較ツール — 並列比較する代替部品を選択:
ATMEGA8535L-8MI
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$2.75 / 個
データシートを見る →ATMEGA8515-16MI
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$2.75 / 個
データシートを見る →ATMEGA8535-16MI 最大定格＆電気的特性
| Core Architecture | 8-bit AVR RISC |
| Program Memory (Flash) | 8 KB In-System Programmable |
| SRAM | 512 B |
| EEPROM | 512 B |
| 最大クロック周波数 | 16 MHz |
| Throughput | 16 MIPS at 16 MHz |
| Instruction Set | 130 instructions, most single-cycle |
| Operating Voltage | 4.5 V to 5.5 V |
| ADC | 8-channel 10-bit |
| 動作温度 | -40C to +85C |
| パッケージ | 44-VQFN (7x7 mm) |
| 実装タイプ | Surface Mount |
| Typical Applications | Industrial automation, consumer electronics |
| Fully Static Operation | Up to 16 MHz |
| General Purpose Registers | 32 x 8 |
| RoHS ステータス | unknown |
ATMEGA8535-16MI 44-vqfn (7x7 mm) ピン配置ガイド
ATMEGA8535-16MI (44-vqfn (7x7 mm) パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: ATMEGA8535-16MI.
詳細は データシート をご参照ください。
主な用途
ATMEGA8535-16MI の用途: 6 件s: Industrial Automation Control, Analog Sensor Acquisition Systems, Motor Control and PWM Drivers, Consumer Electronics Embedded Control, Battery-Powered and Low-Power Instruments, Legacy System Maintenance and Drop-In Repair.
Industrial Automation Control
The ATMEGA8535-16MI fits industrial automation nodes because it combines a -40C to +85C industrial temperature rating with a noise-tolerant 4.5-5.5V supply and a 44-VQFN (7x7) footprint suited to compact control PCBs. Its 8-channel 10-bit ADC can digitize up to eight analog process sensors directly, while hardware timers provide deterministic PWM for actuators. In a typical controller, the MCU runs a compact C control loop at 16 MHz (16 MIPS), reading sensors through the ADC and driving relays or drivers via port pins. Because the Flash is In-System Programmable, field firmware updates are possible without socketing the device, reducing maintenance cost on deployed automation equipment.
おすすめ
Analog Sensor Acquisition Systems
The ATMEGA8535-16MI's integrated 8-channel 10-bit ADC is the primary reason to select it for multi-sensor data acquisition. Eight inputs at 10-bit resolution allow temperature, pressure, and level sensors to connect directly to the MCU without an external ADC, cutting BOM cost and board area. Running at 16 MHz, the AVR performs oversampling and averaging in the 512B SRAM, and calibration constants can be stored in the 512B EEPROM. The In-System Programmable 8KB Flash allows acquisition firmware updates on the bench via SPI. Design consideration: use AVCC and AREF filtering and keep analog traces short on the VQFN-44 layout to preserve ADC accuracy at 10-bit levels.
おすすめ
Motor Control and PWM Drivers
The ATMEGA8535-16MI supports small motor control tasks through its hardware timer/PWM outputs and single-cycle RISC instruction set, which sustains 16 MIPS at 16 MHz for responsive closed-loop control. Firmware running in the 8KB Flash can implement PI speed loops using ADC feedback from current or tachometer signals on the 8-channel 10-bit converter, while hardware PWM drives H-bridge or driver-IC inputs. The 5V supply and industrial temperature rating suit workshop and factory environments. For high-current stages, pair the MCU with gate drivers or MOSFETs; keep the 44-VQFN die pad grounded to reduce thermal impedance and noise coupling into the ADC used for feedback.
おすすめ
Consumer Electronics Embedded Control
According to Microchip USA, typical applications for the ATMEGA8535-16MI include consumer electronics, where its combination of low cost, single-chip integration, and mature toolchain is valuable. The 8KB Flash and 512B SRAM are sufficient for appliance UI logic, keypad scanning, LED/LCD driving, and simple protocol handling, while the 8-channel 10-bit ADC reads potentiometers, thermistors, or battery voltage directly. The 44-VQFN (7x7 mm) surface-mount package supports automated assembly in volume production. The self-programming Flash enables feature updates after manufacture. For cost-sensitive consumer designs, the fully static core also allows clock scaling to reduce active power at reduced throughput requirements.
おすすめ
Battery-Powered and Low-Power Instruments
While the -16MI grade is optimized for 5V operation, the pin-compatible ATMEGA8535L-8MI variant (2.7-5.5V, 8 MHz) addresses battery-powered instrumentation on the same 44-VQFN layout. A single PCB design can therefore serve both mains-powered (5V, 16 MHz) and portable (3V, 8 MHz) instrument variants by swapping the MCU order, preserving layout and certification investment. The fully static core allows clock gating and sleep modes for power reduction between measurements, and the EEPROM stores calibration data across battery replacement. Use the 10-bit ADC with sleep-mode sampling to minimize average current; the 512B SRAM comfortably holds sample buffers for handheld measurement firmware.
おすすめ
Legacy System Maintenance and Drop-In Repair
A significant ongoing use of the ATMEGA8535-16MI is repairing and sustaining legacy AVR-based equipment originally designed around the Atmel mega8535. Because the part remains active with Microchip and shares its footprint with ATMEGA8535L-8MI and (for ADC-free boards) ATMEGA8515-16MI, service organizations can keep production lines and installed bases alive without PCB rework. The In-System Programmable Flash allows original firmware to be reflored via SPI without desoldering, and 5V, -40C to +85C ratings match original design environments. Verify the exact MLF-44 pinout against the manufacturer datasheet before substitution, as footprint-compatible family members differ in peripheral set.
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: ATMEGA8535-16MI — 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 | ATMEGA8535L-8MI | ATMEGA8515-16MI |
|---|---|---|---|
| Package | 44-VQFN (7x7 mm) | 44-VQFN (7x7 mm) - same | 44-VQFN (7x7 mm) - same |
| Brand | Microchip Technology (Atmel) | Microchip Technology (Atmel) | Microchip Technology (Atmel) |
| Flash Memory | 8 KB ISP Flash | 8 KB ISP Flash | 8 KB ISP Flash |
| Maximum Clock / Throughput | 16 MHz / 16 MIPS | 8 MHz / 8 MIPS (-50%) | 16 MHz / 16 MIPS |
| Operating Voltage | 4.5 V to 5.5 V | 2.7 V to 5.5 V | 4.5 V to 5.5 V |
| 10-bit ADC | Yes, 8-channel | Yes, 8-channel | No ADC |
| SRAM | 512 B | 512 B | 512 B |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C |
主な差別化要因
- 16 MHz performance at 5V （vs ATMEGA8535L-8MI)
- Integrated 8-channel 10-bit ADC （vs ATMEGA8515-16MI)
- Compact 44-VQFN (7x7 mm) MLF package （vs ATMEGA8535-16AU)
設計ノート
The ATMEGA8535-16MI is a 5V-only device: the 16-speed grade is specified for 4.5-5.5V operation, so do not attempt 3.3V designs on this order code - select ATMEGA8535L-8MI for 2.7-5.5V rails (max 8 MHz). Decouple VCC and AVCC independently with 100 nF ceramics placed within a few millimeters of the VQFN pads, and tie the exposed die pad of the MLF/VQFN package to the ground plane as required by Atmel's MLF application guidance.
On the 44-VQFN (7x7 mm) footprint, connect the exposed center pad to a solid ground pour with an array of thermal vias - the MLF die pad is the primary thermal and ground return path and is often tied to GND rather than left floating. Keep AVCC and AREF traces short and filter AREF with a capacitor to GND when using the 10-bit ADC; separate the analog port-A routing from switching PWM outputs on ports B and D to preserve ADC signal-to-noise.
Memory budgeting is the most common pitfall: 8KB Flash and 512B SRAM fill quickly with large C libraries - avoid printf-heavy code and consider the ATmega64 family if code size grows. Second, do not confuse package suffixes: -16MI (VQFN), -16AU (TQFP), and -16PI (PDIP) are electrically identical but not footprint-interchangeable. Third, clock source selection (external crystal vs internal RC) is set by fuses; incorrect CKOPT/fuse settings can cause startup failures on 16 MHz crystal designs.
コンプライアンス情報
Compliance status not stated in the provided web data; verify on the official Microchip ATmega8535 product page.