PIC16C662T-20E/PQ - 8-Bit OTP MCU, 7KB, 20MHz, 44-MQFP | Microchip
MPN: PIC16C662T-20E/PQ ✗ انتهى عمره الإنتاجيPIC16C662T-20E/PQ نظرة عامة
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.
بدائل مباشرة لـ PIC16C662T-20E/PQ — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع PIC16C662T-20E/PQ (نفس عامل الشكل والبصمة) — يختلف في Data EEPROM, Package, Program Memory Type, Program Memory Size, Core Architecture.
PIC16F662-I/PQ
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC16F662T-I/PQ
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC16CR662-I/PQ
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC16C662-20E/PQ
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16C661T-20E/PQ
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
PIC16C662-20/PQ
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منهاتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16C662T-20E/PQ الحدود القصوى والخصائص الكهربائية
| 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) |
| أقصى تردد للساعة | 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) |
| درجة حرارة التشغيل | -40 C to +125 C (E - extended) |
| العلبة | 44-MQFP (10x10 mm) |
| نوع التركيب | Surface Mount |
| حالة RoHS | Non-compliant (Pb-bearing MQFP) |
| Lead Finish | SnPb (tin-lead) |
تكوين أطراف PIC16C662T-20E/PQ
| دبوس 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| دبوس 2 | RA0/AN0 — PORTA bit 0 / analog channel 0 |
| دبوس 3 | RA1/AN1 — PORTA bit 1 / analog channel 1 |
| دبوس 4 | RA2/AN2 — PORTA bit 2 / analog channel 2 |
| دبوس 5 | RA3/AN3/VREF — PORTA bit 3 / analog channel 3 / external ADC reference |
| دبوس 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| دبوس 7 | RA5/SS/AN4 — PORTA bit 5 / SSP slave select / analog channel 4 |
| دبوس 8 | RE0/RD/AN5 — PORTE bit 0 / parallel-port read / analog channel 5 |
| دبوس 9 | RE1/WR/AN6 — PORTE bit 1 / parallel-port write / analog channel 6 |
| دبوس 10 | RE2/CS/AN7 — PORTE bit 2 / parallel-port chip select / analog channel 7 |
| دبوس 11 | VDD — Positive supply voltage (3.0V to 5.5V) |
| دبوس 12 | VSS — Ground reference |
| دبوس 13 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| دبوس 14 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| دبوس 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock |
| دبوس 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 PWM output |
| دبوس 17 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| دبوس 18 | RC3/SCK/SCL — PORTC bit 3 / SSP SPI clock / I2C clock |
| دبوس 19 | RC4/SDI/SDA — PORTC bit 4 / SSP SPI data in / I2C data |
| دبوس 20 | RC5/SDO — PORTC bit 5 / SSP SPI data out |
| دبوس 21 | RC6/TX/CK — PORTC bit 6 / USART asynchronous transmit / clock |
| دبوس 22 | RC7/RX/DT — PORTC bit 7 / USART asynchronous receive / data |
| دبوس 23 | RB0/INT — PORTB bit 0 / external interrupt input |
| دبوس 24 | RB1 — PORTB bit 1 |
| دبوس 25 | RB2 — PORTB bit 2 |
| دبوس 26 | RB3/PGM — PORTB bit 3 / low-voltage programming enable |
| دبوس 27 | RB4 — PORTB bit 4 |
| دبوس 28 | RB5 — PORTB bit 5 |
| دبوس 29 | RB6/PGC — PORTB bit 6 / ICSP clock |
| دبوس 30 | RB7/PGD — PORTB bit 7 / ICSP data |
| دبوس 31 | VSS — Ground reference |
| دبوس 32 | VDD — Positive supply voltage (3.0V to 5.5V) |
| دبوس 33 | RB0 — PORTB bit 0 alternate (ICSP clock on some variants) |
| دبوس 34 | NC — Not connected (per datasheet) |
| دبوس 35 | NC — Not connected (per datasheet) |
| دبوس 36 | NC — Not connected (per datasheet) |
| دبوس 37 | NC — Not connected (per datasheet) |
| دبوس 38 | NC — Not connected (per datasheet) |
| دبوس 39 | NC — Not connected (per datasheet) |
| دبوس 40 | NC — Not connected (per datasheet) |
| دبوس 41 | NC — Not connected (per datasheet) |
| دبوس 42 | NC — Not connected (per datasheet) |
| دبوس 43 | NC — Not connected (per datasheet) |
| دبوس 44 | NC — Not connected (per datasheet) |
التطبيقات النموذجية
PIC16C662T-20E/PQ مناسب لـ 6 التطبيقs: 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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC16C662T-20E/PQ — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | 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) |
أبرز الفروقات
- Highest-density OTP in the PIC16C66x family (مقابلPIC16C661T-20E/PQ)
- Extended temperature grade for automotive/industrial (مقابلPIC16C662-20/PQ)
- Tape-and-reel packaging for high-volume SMD assembly (مقابلPIC16C662-20E/PQ)
ملاحظات التصميم
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.
معلومات الامتثال
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.
