PIC16C65AT-20I/PT - 8-Bit OTP MCU, 7KB, 33 I/O | Microchip
部品番号: PIC16C65AT-20I/PT ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.2 | $112.00 |
| 100 | $9.85 | $985.00 |
| 500 | $8.4 | $4,200.00 |
| 1,000 | $7.1 | $7,100.00 |
PIC16C65AT-20I/PT 概要
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (ROM/RAM), and programmable I/O peripherals. The PIC16C65A belongs to the mid-range PIC family, sitting in the taxonomy of microcontrollers -> embedded controllers -> microprocessors -> semiconductors. OTP memory is field-programmable but not erasable, making the PIC16C65A well-suited for low-cost production runs where firmware stability is verified before mask programming.
Key features include Harvard architecture with separate program and data buses, 35 single-word RISC instructions, DC to 20 MHz operating speed, and an industrial-grade -40C to +85C operating temperature range (the "/I" suffix). Power management is handled via SLEEP mode with multiple wake-up sources. The 44-pin TQFP (PT) package provides a compact 10 mm x 10 mm footprint suitable for space-constrained designs.
Typical applications include industrial control logic, motor control front-ends, sensor interfacing boards, HVAC controls, automotive body electronics (non-safety), and embedded instrumentation. The integrated A/D converter and USART simplify designs that previously required external glue logic.
When designing with this part, account for OTP memory limitations - firmware must be fully validated before programming because the device cannot be re-programmed. Use the parallel slave port for high-speed data acquisition and the USART for asynchronous serial communication with a host processor.
ドロップイン代替品: PIC16C65AT-20I/PT — 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: PIC16C65AT-20I/PT （同一形状・フットプリント） — 相違点: Core Architecture, RAM Size, Program Memory Size, Program Memory Type, ADC.
クイック比較ツール — 並列比較する代替部品を選択:
PIC16F877A-I/PT
✅ ドロップイン✓ 在庫あり
$4.95 / 個
データシートを見る →PIC16C65A-20I/PT
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PIC16C65AT-20/PT
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$9.25 / 個
データシートを見る →PIC16C65AT-20E/PT
✅ ドロップイン✓ 在庫あり
$5.48 / 個
データシートを見る →PIC16F874A-I/PT
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
PIC16C65B-20I/PT
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$6.2 / 個
データシートを見る →PIC16C65AT-20I/PT 最大定格＆電気的特性
| Core Architecture | 8-bit PIC mid-range |
| Family | PIC16C6X |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14 words) |
| RAM Size | 192 x 8 bytes |
| Number of I/O | 33 |
| 最大クロック周波数 | 20 MHz |
| Instruction Set | 35 single-word RISC instructions |
| ADC | 8-bit, 8 channels |
| Timers | 2 x 8-bit, 1 x 16-bit |
| Communication | USART, SSP (SPI/I2C) |
| Parallel Slave Port | 8-bit |
| 動作温度 | -40C to +85C (industrial) |
| パッケージ | 44-pin TQFP (PT), 10x10 mm |
| 実装タイプ | Surface Mount |
PIC16C65AT-20I/PT 44-pin tqfp (pt), 10x10 mm ピン配置ガイド
PIC16C65AT-20I/PT (44-pin tqfp (pt), 10x10 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: PIC16C65AT-20I/PT.
詳細は データシート をご参照ください。
主な用途
PIC16C65AT-20I/PT の用途: 6 件s: Industrial Control Logic, Motor Control Front-End, HVAC Control Systems, Sensor Interfacing Boards, Automotive Body Electronics, Embedded Instrumentation.
Industrial Control Logic
The PIC16C65AT-20I/PT fits industrial control logic boards because its 33 I/O pins, 8-channel 8-bit ADC, and 20 MHz RISC core handle multiple sensor inputs and actuator outputs in a single chip. The integrated USART and SSP enable networking with industrial protocols like Modbus RTU. Industrial temperature grade (-40C to +85C) suits factory floor environments.
おすすめ
Motor Control Front-End
The PIC16C65AT-20I/PT drives motor control front-ends with its Timer1 (16-bit) module for precise PWM generation and 8-bit ADC for current sensing feedback. The 44-pin TQFP package provides ample I/O for multiple MOSFET gate drivers, encoder inputs, and fault detection signals. The /I suffix ensures operation in motor-drive ambient temperatures.
おすすめ
HVAC Control Systems
The PIC16C65AT-20I/PT is suitable for HVAC control boards, reading temperature sensors via its 8-channel ADC and driving relays, fan controls, and valve actuators through its 33 I/O pins. The USART interfaces with display modules and remote thermostats. The wide industrial temperature range supports attic and outdoor HVAC equipment.
おすすめ
Sensor Interfacing Boards
The PIC16C65AT-20I/PT serves as the main processor in sensor interfacing boards where its integrated 8-bit ADC, multiple timers, and SSP/I2C peripherals simplify designs. The 7 KB OTP memory fits deterministic sensor processing firmware. Parallel slave port enables fast data transfer to host processors in data acquisition systems.
おすすめ
Automotive Body Electronics
The PIC16C65AT-20I/PT is used in non-safety automotive body modules like seat controllers, mirror adjusters, and lighting controllers where its -40C to +85C operating range covers automotive cabin temperatures. The OTP memory prevents unauthorized firmware tampering. The 33 I/O pins support multiple switch inputs and PWM-controlled loads.
おすすめ
Embedded Instrumentation
The PIC16C65AT-20I/PT powers embedded instrumentation such as digital panel meters, data loggers, and bench instruments. Its USART provides serial data output to PCs, the ADC reads measurement signals, and the parallel slave port enables high-speed parallel data capture. The 20 MHz instruction rate supports real-time DSP-like filtering routines.
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: PIC16C65AT-20I/PT — 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 | PIC16F877A-I/PT | PIC16C65A-20I/PT | PIC16C65AT-20E/PT | PIC16F874A-I/PT | PIC16C65B-20I/PT |
|---|---|---|---|---|---|---|
| Package | 44-pin TQFP (PT) | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory Size | 7 KB OTP | 14 KB Flash | 7 KB OTP | 7 KB OTP | 7 KB Flash | 7 KB OTP |
| Program Memory Type | OTP | Flash (re-programmable) | OTP | OTP | Flash (re-programmable) | OTP |
| RAM Size | 192 bytes | 368 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C | -40C to +85C | -40C to +125C (extended) | -40C to +85C | -40C to +85C |
| Lifecycle Status | Obsolete | Active | Obsolete | Obsolete | Active | Obsolete |
主な差別化要因
- Lower cost vs flash-based equivalent （vs PIC16F877A-I/PT)
- Industrial temperature range standard （vs PIC16C65AT-20/PT)
- Drop-in compatible flash replacement available （vs PIC16F877A-I/PT)
設計ノート
OTP (One-Time Programmable) memory cannot be erased or rewritten. Once the PIC16C65AT-20I/PT is programmed, the firmware is permanent. Engineers must fully verify firmware on a flash-based development equivalent (e.g., PIC16F877A) before programming production units. Misprogramming results in scrapped parts and significant cost.
The PIC16C65AT-20I/PT requires stable Vdd decoupling. Place a 100 nF ceramic capacitor as close as possible to each Vdd/Vss pin pair, plus a bulk 10 uF tantalum or electrolytic capacitor on the main supply rail. Brown-out detection must be enabled in the configuration word to prevent code corruption during supply dips below the operating threshold.
The 44-pin TQFP (PT) package has a 0.8 mm lead pitch requiring careful PCB layout. Use 4 mil trace/space rules minimum, and consider micro-via fanouts for inner pads. The exposed thermal pad (if present in this package variant) should be soldered to a copper pour to improve thermal dissipation, although the PIC16C65A has modest power consumption.
The PIC16C65AT-20I/PT oscillator circuit is sensitive to noise and capacitive loading. Use a crystal with the load capacitance specified in the datasheet (typically 15-33 pF) and place the crystal within 5 mm of the OSC1/OSC2 pins. For high-noise environments (motor control), use a 4-layer PCB with a dedicated ground plane beneath the oscillator traces.
コンプライアンス情報
Compliance status not explicitly stated in verified data. PIC16C6X OTP family pre-dates widespread RoHS compliance documentation. Marked [DATA_NEEDED] in specs.