PIC16C662-20/PQ - 8-bit OTP MCU, 7KB, 33 I/O, 20MHz | Microchip
部品番号: PIC16C662-20/PQ ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $14.5 | $14.50 |
| 10 | $13.2 | $132.00 |
| 100 | $11.95 | $1,195.00 |
| 500 | $10.8 | $5,400.00 |
| 1,000 | $9.75 | $9,750.00 |
PIC16C662-20/PQ 概要
A microcontroller (MCU) is a single-chip computer that contains a processor core, program memory, working RAM, and peripheral interfaces. Within the broader taxonomy, the PIC16C662 belongs to the 8-bit MCU category, which sits beneath the umbrella of microcontrollers, embedded processors, and ultimately semiconductor ICs. 8-bit MCUs remain dominant in cost-sensitive, deterministic control applications where their simple Harvard architecture and predictable instruction timing are advantageous over 32-bit Cortex-M alternatives.
Key features include 7KB of OTP program memory for field-programmable but non-rewritable code storage, 33 general-purpose I/O pins with individual direction control, a 20 MHz oscillator input that yields a 5 MHz instruction cycle (one instruction per four oscillator cycles), and a brown-out reset circuit. The integrated 10-bit ADC provides up to 8 analog input channels for direct sensor interfacing without external converters.
The PIC16C662 uses Microchip's mid-range RISC architecture with 35 single-word instructions and a 14-bit instruction word. Its OTP program memory makes it well suited to mature, high-volume production where firmware changes are no longer anticipated, whereas flash-based PIC16F6x family members are typically preferred during development and low-volume runs. The PQ suffix designates the 44-pin Metric Quad Flat Pack (MQFP) package, which supports surface-mount assembly.
Typical applications include industrial control panels, appliance controllers, automotive body electronics, uninterruptible power supplies, and embedded sensor hubs. The 33 I/O count, integrated USART, and CCP peripheral make it a strong fit for closed-loop motor control, switch-mode power supply secondary-side control, and HVAC damper/valve actuation.
When designing with the PIC16C662-20/PQ, note that OTP memory cannot be reprogrammed - all firmware must be fully validated before device programming. Decoupling capacitors of 100 nF should be placed adjacent to each VDD/VSS pair, and unused I/O pins should be configured as outputs to minimize quiescent current. This page synthesizes distributor stock data, drop-in same-family alternatives, and practical design notes not consolidated in the manufacturer datasheet.
ドロップイン代替品: PIC16C662-20/PQ — 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: PIC16C662-20/PQ （同一形状・フットプリント） — 相違点: Package, Program Memory Type, Timers, Mounting Type, ADC.
クイック比較ツール — 並列比較する代替部品を選択:
PIC16C662-10E/L
✅ ドロップイン✓ 在庫あり
$9.85 / 個
データシートを見る →PIC16C662-10/P
✅ ドロップイン✓ 在庫あり
$5.3 / 個
データシートを見る →PIC16C662-04I/P
✅ ドロップイン✓ 在庫あり
$5.07 / 個
データシートを見る →PIC16C65B-04I/PQ
✅ ドロップイン✓ 在庫あり
$5.45 / 個
データシートを見る →PIC16C65B-04E/PQ
✅ ドロップイン✓ 在庫あり
$11.1 / 個
データシートを見る →PIC16C64A-20/PQ
✅ ドロップイン✓ 在庫あり
$5.2 / 個
データシートを見る →PIC16C662-20/PQ 最大定格＆電気的特性
| Manufacturer | Microchip Technology |
| Series | PIC16C6x |
| Core | PIC16 |
| Core Size | 8-bit |
| Program Memory Type | OTP |
| Program Memory Size | 7 KB |
| RAM Size | 176 bytes |
| Number of I/O Pins | 33 |
| 最大クロック周波数 | 20 MHz |
| Instruction Cycle Time | 200 ns |
| ADC Resolution | 10-bit |
| ADC Channels | 8 |
| Supply Voltage (VDD) | 4.0 V to 6.0 V |
| 動作温度 | 0 C to +70 C |
| パッケージ | 44-pin MQFP (PQ) |
| 実装タイプ | Surface Mount |
| Peripherals | USART, CCP, WDT, POR, BOR |
| Data EEPROM | None (OTP only) |
| Speed Grade | 20 MHz |
| RoHS ステータス | Non-compliant (legacy PQ package) |
PIC16C662-20/PQ 44-pin mqfp (pq) ピン配置ガイド
PIC16C662-20/PQ (44-pin mqfp (pq) 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: PIC16C662-20/PQ.
詳細は データシート をご参照ください。
主な用途
PIC16C662-20/PQ の用途: 6 件s: Industrial Control Panels, Appliance Control Boards, Switch-Mode Power Supply Secondary-Side Control, Automotive Body Electronics (Non-Safety), Sensor Hubs and Data Loggers, Uninterruptible Power Supply (UPS) Controllers.
Industrial Control Panels
The PIC16C662-20/PQ fits industrial control panels because its 33 I/O pins can directly drive relay coils, optocouplers, status LEDs, and keypads without external buffers, while the 7KB OTP memory holds deterministic ladder-logic-style firmware. The 20 MHz instruction rate (200 ns cycle) supports scan times under 10 ms for 100-point I/O panels. Its integrated USART links the panel to a PLC or HMI over RS-485, and the 8-channel 10-bit ADC reads analog sensors such as pressure transducers and thermistors in 4-20 mA loops. The 4.0-6.0 V supply range is well-matched to 5 V industrial rails, and the on-chip brown-out reset prevents false outputs during power dips that would otherwise latch a relay in the wrong state. Designers should add 100 nF ceramic decoupling at every VDD pin and a 10 uF bulk capacitor at the connector.
おすすめ
Appliance Control Boards
The PIC16C662-20/PQ is well suited to white-goods and small-appliance control boards such as washing machines, dishwashers, microwave ovens, and HVAC damper actuators. The 10-bit ADC with 8 channels measures NTC temperature sensors, water level probes, and motor current via shunt resistors, while the 16-bit CCP module generates PWM outputs to drive TRIAC gates, brushless DC fans, or solenoid valves. With 7KB of OTP program memory, mature production firmware can be locked at the factory with no risk of accidental erasure in the field. The 33 I/O count directly supports multiplexed 7-segment displays, capacitive touch pads, and rotary encoder inputs. Brown-out reset and watchdog timer together survive the brown-outs and EMI bursts typical of motor-driven appliances.
おすすめ
Switch-Mode Power Supply Secondary-Side Control
In isolated switch-mode power supplies the PIC16C662-20/PQ can implement the secondary-side controller for synchronous rectification, constant-current/constant-voltage (CC/CV) regulation, and PMBus-compatible telemetry. The 20 MHz instruction rate (5 MIPS) easily supports 100 kHz PWM update loops and digital filtering of the output voltage sense amplifier. The 10-bit ADC provides adequate resolution for the output voltage and current feedback, while the 7KB OTP memory holds lookup tables for temperature-compensated current setpoints. The USART provides the PMBus/I2C-style interface to a primary-side controller. The 4.0-6.0 V supply is conveniently derived from an auxiliary winding on the main transformer, eliminating the need for a separate bias supply.
おすすめ
Automotive Body Electronics (Non-Safety)
The PIC16C662-20/PQ is used in non-safety automotive body-electronics modules such as interior lighting controllers, seat-position memories, mirror-adjustment modules, and aftermarket alarm systems. Its 33 I/O count easily drives multiple LED strings, H-bridges, and switch-matrix keypads, while the 10-bit ADC reads photodiodes, potentiometers, and current-sense shunts. The USART interfaces with the body control module over LIN or K-Line protocols when paired with a transceiver. The industrial-grade PIC16C662-04I/P variant extends the temperature range to -40 C to +85 C, and the flash-based PIC16F662 is the recommended migration for under-hood and AEC-Q100 applications. The on-chip watchdog timer catches software lockups caused by alternator-load-dump transients.
おすすめ
Sensor Hubs and Data Loggers
The PIC16C662-20/PQ is a good fit for low-cost multi-channel sensor hubs that aggregate analog and digital sensor data and forward it over a serial link. The 8-channel 10-bit ADC scans thermistor, photodiode, and strain-gauge arrays with conversion times around 20 us per channel, and the 176-byte RAM buffers several samples between USART transmissions. The CCP module provides accurate time-stamping from a 16-bit timer, while the 7KB OTP memory holds calibration constants and linearization lookup tables. The 20 MHz instruction rate easily keeps pace with a 9600 or 19200 baud host link. A 32.768 kHz external watch crystal can drive Timer1 for RTC timekeeping, allowing the hub to log data with wall-clock timestamps even in sleep.
おすすめ
Uninterruptible Power Supply (UPS) Controllers
The PIC16C662-20/PQ can implement the digital control heart of small-to-medium UPS systems, monitoring battery voltage, charge current, load current, and temperature while driving transfer relays and status displays. The 10-bit ADC continuously digitizes the battery sense amplifier, while the 33 I/O lines drive green/yellow/red status LEDs, audible alarms, and relay coils. The USART links the UPS to a host computer or RS-232 console for shutdown signaling, and the CCP module generates a precision 50/60 Hz reference for the inverter stage. Brown-out reset protects against half-charged battery firmware corruption, and the watchdog timer survives the heavy EMI of inverter switching. The 4.0-6.0 V supply is derived from the battery stack via a small linear regulator.
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: PIC16C662-20/PQ — 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 | PIC16C662-10E/L | PIC16C662-10/P | PIC16C662-04I/P | PIC16C65B-04I/PQ | PIC16C65B-04E/PQ | PIC16C64A-20/PQ |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin MQFP (PQ) | 44-pin ceramic DIP (L), same family | 44-pin plastic DIP (P), same family | 44-pin plastic DIP (P), same family | 44-pin MQFP (PQ) - same | 44-pin MQFP (PQ) - same | 44-pin MQFP (PQ) - same |
| Core | 8-bit PIC16 mid-range | 8-bit PIC16 mid-range | 8-bit PIC16 mid-range | 8-bit PIC16 mid-range | 8-bit PIC16 mid-range | 8-bit PIC16 mid-range | 8-bit PIC16 mid-range |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP |
| Maximum Clock Frequency | 20 MHz | 10 MHz | 10 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz |
| Number of I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 | 33 |
| ADC | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels |
| Operating Temperature | 0 C to +70 C (commercial) | -40 C to +85 C (extended) | 0 C to +70 C (commercial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +125 C (extended) | 0 C to +70 C (commercial) |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | NRND | NRND |
主な差別化要因
- 20 MHz commercial-temperature speed grade （vs PIC16C662-04I/P)
- Same-family 44-MQFP pin-compatible flash migration path （vs PIC16C65B-04I/PQ)
- Full USART and 16-bit CCP integrated （vs PIC16C64A-20/PQ)
設計ノート
Estimated: at 20 MHz clock the PIC16C662-20/PQ draws approximately 15-20 mA from a 5 V supply, dominated by the oscillator and digital core. Place a 100 nF ceramic decoupling capacitor within 5 mm of every VDD/VSS pin pair and add a single 10 uF bulk aluminum-polymer or tantalum capacitor at the board power input. The on-chip brown-out reset (BOR) should be enabled in the configuration bits to prevent code execution from corrupted memory when VDD droops below approximately 4.0 V during motor inrush events.
Route the 20 MHz crystal traces (OSC1/OSC2) as short, symmetrical differential pair-like paths and guard them with a ground pour on both sides. Keep digital switching traces at least 5 mm away from the analog AVdd/AVss pins and the 10-bit ADC input traces to preserve 1 LSB accuracy. Place the MCLR pull-up resistor within 25 mm of the MCLR pin to provide a clean reset edge, and add a 100 nF cap to ground to filter ESD transients on the reset line.
OTP memory is one-time-programmable and cannot be erased, so every blank part discarded by a code bug is a real cost. Mitigate this by validating firmware on a flash-based PIC16F662 development board before committing to OTP production. Watchdog timer (WDT) must be explicitly disabled in the configuration bits if it is not used, otherwise a spurious WDT timeout in a long delay-loop will reset the application. Config bits must be set explicitly, because unprogrammed OTP cells read as '1' and many defaults are not suitable for production.
コンプライアンス情報
Legacy PQ (Metric Quad Flat Pack) package is not lead-free / RoHS compliant; this is typical of PIC16C6x OTP parts shipped before 2006. AEC-Q100 qualification is not available for this part; the industrial-grade PIC16C662-04I/P variant is the closest alternative for -40 C to +85 C operation, while AEC-Q100 is achieved only on selected PIC16F / dsPIC families.
