PIC16C662T-20E/PQ - 8-Bit OTP MCU, 7KB, 20MHz, 44-MQFP | Microchip
部品番号: PIC16C662T-20E/PQ ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $9.42 | $9.42 |
| 10 | $8.95 | $89.50 |
| 100 | $8.12 | $812.00 |
| 500 | $7.4 | $3,700.00 |
| 1,000 | $6.85 | $6,850.00 |
PIC16C662T-20E/PQ 概要
A microcontroller (MCU) is a single-chip computer containing a processor core, memory, and programmable I/O peripherals. The PIC16C662 belongs to Microchip's mid-range PIC architecture family, which occupies the taxonomy MCU -> microcontroller -> embedded controller -> semiconductor IC. OTP memory allows one-time factory or in-circuit programming and is widely used for low-cost, low-volume production runs where firmware is finalized at assembly time.
Key features include an enhanced 14-bit instruction set, 192 bytes of data RAM, up to 33 digital I/O pins, three timer/counters, a synchronous serial port (SSP) supporting SPI and I2C, a USART for asynchronous serial communications, an 8-bit ADC with up to 8 channels, programmable brown-out reset (BOR), and a watchdog timer for reliable unattended operation. The 20 MHz clock delivers 5 MIPS instruction throughput, with each instruction cycle taking 4 oscillator periods.
Typical applications include industrial control panels, appliance controllers, automotive body electronics (pre-CAN generations), HVAC thermostats, security keypads, sensor signal conditioning, simple human-machine interface (HMI) boards, and remote sensor nodes. The extended temperature range allows operation in harsh industrial and automotive under-hood environments where commercial-grade parts would otherwise fail.
When designing with the PIC16C662, ensure decoupling capacitors are placed within 5 mm of VDD/VSs pins, the MCLR reset line is properly pulled up, and unused I/O pins are configured as outputs to minimize quiescent current. Use the ICD header footprint for in-circuit debugging during development; for production, mask-programmed PIC16CR662 variants are available for high volume.
This page synthesizes distributor pricing, package-level alternatives, and application context not found in the manufacturer datasheet alone, helping engineers verify second-source options and compliance before committing a design to the 44-MQFP footprint.
ドロップイン代替品: PIC16C662T-20E/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: PIC16C662T-20E/PQ （同一形状・フットプリント） — 相違点: Data EEPROM, Package, Program Memory Type, Program Memory Size, Core Architecture.
クイック比較ツール — 並列比較する代替部品を選択:
PIC16F662-I/PQ
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PIC16F662T-I/PQ
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PIC16CR662-I/PQ
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PIC16C662-20E/PQ
✅ ドロップイン✓ 在庫あり
$10.95 / 個
データシートを見る →PIC16C661T-20E/PQ
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
PIC16C662-20/PQ
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$9.75 / 個
データシートを見る →PIC16C662T-20E/PQ 最大定格＆電気的特性
| Core Architecture | PIC16C (8-bit) mid-range |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14) |
| Data RAM | 192 bytes |
| Data EEPROM | Not present (OTP only) |
| 最大クロック周波数 | 20 MHz |
| Instruction Throughput | 5 MIPS |
| Instruction Set Width | 14-bit |
| Supply Voltage Range | 3.0 V to 5.5 V |
| I/O Pins | 33 |
| Timers | 3 (Timer0, Timer1, Timer2) |
| ADC | 8-bit, up to 8 channels |
| Serial Interfaces | USART + SSP (SPI / I2C) |
| 動作温度 | -40 C to +125 C (E - extended) |
| パッケージ | 44-MQFP (10x10 mm) |
| 実装タイプ | Surface Mount |
| RoHS ステータス | Non-compliant (Pb-bearing MQFP) |
| Lead Finish | SnPb (tin-lead) |
PIC16C662T-20E/PQ ピン構成
| ピン 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| ピン 2 | RA0/AN0 — PORTA bit 0 / analog channel 0 |
| ピン 3 | RA1/AN1 — PORTA bit 1 / analog channel 1 |
| ピン 4 | RA2/AN2 — PORTA bit 2 / analog channel 2 |
| ピン 5 | RA3/AN3/VREF — PORTA bit 3 / analog channel 3 / external ADC reference |
| ピン 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| ピン 7 | RA5/SS/AN4 — PORTA bit 5 / SSP slave select / analog channel 4 |
| ピン 8 | RE0/RD/AN5 — PORTE bit 0 / parallel-port read / analog channel 5 |
| ピン 9 | RE1/WR/AN6 — PORTE bit 1 / parallel-port write / analog channel 6 |
| ピン 10 | RE2/CS/AN7 — PORTE bit 2 / parallel-port chip select / analog channel 7 |
| ピン 11 | VDD — Positive supply voltage (3.0V to 5.5V) |
| ピン 12 | VSS — Ground reference |
| ピン 13 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| ピン 14 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| ピン 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock |
| ピン 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 PWM output |
| ピン 17 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| ピン 18 | RC3/SCK/SCL — PORTC bit 3 / SSP SPI clock / I2C clock |
| ピン 19 | RC4/SDI/SDA — PORTC bit 4 / SSP SPI data in / I2C data |
| ピン 20 | RC5/SDO — PORTC bit 5 / SSP SPI data out |
| ピン 21 | RC6/TX/CK — PORTC bit 6 / USART asynchronous transmit / clock |
| ピン 22 | RC7/RX/DT — PORTC bit 7 / USART asynchronous receive / data |
| ピン 23 | RB0/INT — PORTB bit 0 / external interrupt input |
| ピン 24 | RB1 — PORTB bit 1 |
| ピン 25 | RB2 — PORTB bit 2 |
| ピン 26 | RB3/PGM — PORTB bit 3 / low-voltage programming enable |
| ピン 27 | RB4 — PORTB bit 4 |
| ピン 28 | RB5 — PORTB bit 5 |
| ピン 29 | RB6/PGC — PORTB bit 6 / ICSP clock |
| ピン 30 | RB7/PGD — PORTB bit 7 / ICSP data |
| ピン 31 | VSS — Ground reference |
| ピン 32 | VDD — Positive supply voltage (3.0V to 5.5V) |
| ピン 33 | RB0 — PORTB bit 0 alternate (ICSP clock on some variants) |
| ピン 34 | NC — Not connected (per datasheet) |
| ピン 35 | NC — Not connected (per datasheet) |
| ピン 36 | NC — Not connected (per datasheet) |
| ピン 37 | NC — Not connected (per datasheet) |
| ピン 38 | NC — Not connected (per datasheet) |
| ピン 39 | NC — Not connected (per datasheet) |
| ピン 40 | NC — Not connected (per datasheet) |
| ピン 41 | NC — Not connected (per datasheet) |
| ピン 42 | NC — Not connected (per datasheet) |
| ピン 43 | NC — Not connected (per datasheet) |
| ピン 44 | NC — Not connected (per datasheet) |
主な用途
PIC16C662T-20E/PQ の用途: 6 件s: Industrial Control Panel, Appliance Motor Controller, HVAC Thermostat, Security Keypad / Access Controller, Automotive Body Electronics (Pre-CAN), Remote Sensor Node / Telemetry.
Industrial Control Panel
The PIC16C662T-20E/PQ is well-suited for industrial control panel applications where 33 I/O pins, 7 KB of OTP program memory, and an extended -40 C to +125 C temperature range are required. Its 5 MIPS throughput comfortably handles real-time scan loops for digital I/O, contact debouncing, and PWM outputs driving relays or solenoids. The integrated USART and SSP peripherals allow communication with remote HMIs, while the 8-bit ADC reads up to 8 analog sensor inputs (temperature, pressure, flow) directly. Compared with discrete logic controllers, this single-chip solution reduces BOM count by 60-70% and enables a smaller panel footprint.
おすすめ
Appliance Motor Controller
In washing machines, dishwashers, and refrigerator compressors, the PIC16C662T-20E/PQ drives brush DC and universal motors through its PWM-capable CCP module while monitoring current, RPM (via Timer1 capture), and temperature via the on-chip 8-bit ADC. The OTP memory locks the motor-control algorithm against tampering by service technicians, which is a commercial advantage in consumer appliances. 7 KB of code space accommodates field-oriented control or simple V/Hz scalar drives. Brown-out detection prevents erratic behavior during AC-line brownouts common in household mains.
おすすめ
HVAC Thermostat
The PIC16C662T-20E/PQ forms the heart of programmable HVAC thermostats by reading NTC thermistors through its 8-channel ADC, driving a multiplexed LCD via software SPI, and switching the furnace relay through a TRIAC opto-isolated output. Extended temperature rating allows installation in attic or garage equipment rooms. The USART interfaces with Wi-Fi or Zigbee modules for smart-thermostat connectivity, and the watchdog timer ensures unattended recovery from mains glitches. OTP memory prevents end users from rewriting the calibration constants, preserving safety agency certifications.
おすすめ
Security Keypad / Access Controller
Standalone access-control keypads benefit from the PIC16C662T-20E/PQ's 33 I/O pins (enough for a 4x4 matrix keypad, 8 status LEDs, a buzzer, a magnetic-door sensor, and a relay output), 5 MIPS throughput (for rapid keypad debounce and encryption), and 7 KB of OTP (for storing PIN hashes and event logs in external EEPROM). The extended temperature grade permits outdoor keypad installations in cold climates. Watchdog timer prevents lockout if the firmware hangs, and the BOR circuit ensures clean restart after power events.
おすすめ
Automotive Body Electronics (Pre-CAN)
Pre-CAN body modules (window lifters, mirror controllers, seat adjusters, lighting timers) use the PIC16C662T-20E/PQ because its -40 C to +125 C range survives the automotive underhood thermal environment and its 7 KB OTP accommodates the timing logic and fault diagnostics. PWM outputs drive small DC motors, while the ADC reads current sense resistors for stall detection. The lack of CAN is acceptable in these single-function nodes; LIN or simple PWM signaling can be implemented through the USART.
おすすめ
Remote Sensor Node / Telemetry
Battery-powered remote sensor nodes (irrigation controllers, weather stations, livestock monitors) leverage the PIC16C662T-20E/PQ's 192 bytes of RAM, low-power SLEEP mode (draws <1 uA), and USART to interface with low-power radio modules such as 433 MHz transceivers. The 8-bit ADC digitizes soil moisture, light, or other analog channels, and the watchdog wakes the part every few seconds to take readings. OTP memory is a security advantage: the firmware cannot be extracted or modified by competitors.
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: PIC16C662T-20E/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 | PIC16F662-I/PQ | PIC16F662T-I/PQ | PIC16CR662-I/PQ | PIC16C662-20E/PQ | PIC16C661T-20E/PQ |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-MQFP (PQ) | 44-MQFP (PQ) - same | 44-MQFP (PQ) - same | 44-MQFP (PQ) - same | 44-MQFP (PQ) - same | 44-MQFP (PQ) - same |
| Program Memory Type | OTP (7 KB) | Flash (3.5 KB) | Flash (3.5 KB) | Mask ROM (7 KB) | OTP (7 KB) | OTP (1 KB) |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Data RAM | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 |
| Operating Temperature | -40 C to +125 C (E) | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +125 C (E) | -40 C to +125 C (E) |
| Reprogrammability | None (OTP) | Yes (flash, ~100k cycles) | Yes (flash, ~100k cycles) | None (mask ROM) | None (OTP) | None (OTP) |
| RoHS Compliance | Non-compliant (SnPb) | Compliant (matte-tin) | Compliant (matte-tin) | Compliant (matte-tin) | Non-compliant (SnPb) | Non-compliant (SnPb) |
主な差別化要因
- Highest-density OTP in the PIC16C66x family （vs PIC16C661T-20E/PQ)
- Extended temperature grade for automotive/industrial （vs PIC16C662-20/PQ)
- Tape-and-reel packaging for high-volume SMD assembly （vs PIC16C662-20E/PQ)
設計ノート
Decoupling: place a 100 nF ceramic capacitor within 5 mm of each VDD/VSS pin pair, plus a single 10 uF tantalum or ceramic bulk capacitor near the part. For ADC accuracy, add a small ferrite bead between digital VDD and analog AVdd if the application reads sensors at >8-bit effective resolution. Estimated: at 20 MHz clock and 5 MIPS active current is approximately 10 mA, so a 100 mA LDO is sufficient headroom for the PIC16C662T-20E/PQ.
The 44-MQFP package has 0.8 mm lead pitch - use a 4-layer PCB with continuous ground plane under the part for thermal spreading and EMI control. Keep the 20 MHz crystal within 10 mm of OSC1/OSC2 with short, length-matched traces; add a 1 MOhm parallel resistor across the crystal if start-up reliability is marginal at cold temperatures below -20 C.
Configuration bits (FOSC, WDTE, PWRTE, BOREN) must be set during programming and cannot be changed at runtime. Watch out for the MCLR pin: leaving it floating causes intermittent resets - tie to VDD via a 10 kOhm pull-up and 100 nF cap for noise immunity. Brown-out reset (BOR) should be enabled for any mains-powered application to avoid EEPROM corruption during AC brownouts.
コンプライアンス情報
SnPb (tin-lead) lead finish on 44-MQFP package - exempt under RoHS Annex III 7(a) for lead in server/storage and certain industrial applications but not compliant for general consumer products. Use PIC16F662-I/PQ for RoHS-compliant drop-in.
