PIC16C67-20I/PT - 8-bit 20MHz 14KB OTP MCU 44-TQFP | Microchip
MPN: PIC16C67-20I/PT ✓ نشطPIC16C67-20I/PT نظرة عامة
What is a PIC16C-series microcontroller? The PIC16C family is Microchip's classic mid-range 8-bit OTP (One-Time-Programmable) microcontroller line, part of the broader PICmicro® MCU taxonomy: PIC16C -> 8-bit PIC -> microcontroller -> embedded controller -> semiconductor. These MCUs use a Harvard RISC architecture with separate program and data buses, a 14-bit instruction word, and 35 single-cycle instructions - delivering deterministic throughput suitable for real-time control loops and legacy industrial systems that historically depended on one-time-programmable devices.
Key features of the PIC16C67-20I/PT include a 20 MHz maximum clock, 14KB (8K x 14) of OTP program memory, 368 bytes of data RAM, 33 digital I/O pins, multiple timer modules, a 10-bit ADC, synchronous/asynchronous serial ports, and an industrial-grade (-40C to +85C) operating temperature range. The 'I' suffix denotes industrial temperature grade; '/PT' denotes the 44-pin TQFP surface-mount package.
The device uses a RISC architecture with a 14-bit instruction word and an 8-bit data path. It integrates brown-out reset, power-on reset, watchdog timer with on-chip RC oscillator, and a wide operating voltage range, making it suitable for harsh industrial environments. The Harvard bus keeps program fetches and data accesses independent for predictable instruction timing.
Typical applications include industrial control systems, motor control, instrumentation, and embedded legacy designs where OTP memory is acceptable for volume production. It is also used in automotive subsystems (non-safety), consumer appliances, and educational platforms teaching classic PICmicro® development.
When designing with the PIC16C67-20I/PT, ensure your firmware development toolchain is set up for OTP parts - this is a one-time-programmable device, so code must be fully verified before production programming. Industrial-grade parts require conformal coating consideration in humid environments.
This page synthesizes distributor pricing, OTP vs Flash migration paths, and practical design notes that go beyond the manufacturer datasheet alone, helping engineers choose between the original OTP device and modern Flash-based drop-in successors.
بدائل مباشرة لـ PIC16C67-20I/PT — 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 PIC16C67-20I/PT (نفس عامل الشكل والبصمة) — يختلف في Program Memory Size, Timers, Program Memory Type, Package, ADC.
PIC16C67-20/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16C67-10I/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16C67-04I/PT
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC16F77-I/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16F874A-I/PT
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC16C67-20I/PT الحدود القصوى والخصائص الكهربائية
| Manufacturer | Microchip Technology |
| Series | PIC® 16C |
| Core Processor | PIC |
| Core Size | 8-bit |
| Program Memory Size | 14KB (8K x 14) |
| Program Memory Type | OTP (One-Time Programmable) |
| RAM Size | 368 bytes |
| Number of I/O | 33 |
| أقصى تردد للساعة | 20 MHz |
| نطاق درجة حرارة التشغيل | -40C to +85C (Industrial) |
| العلبة | 44-pin TQFP (10x10 mm) |
| نوع التركيب | Surface Mount |
| Communications | UART, SPI, I2C (per datasheet) |
تكوين أطراف PIC16C67-20I/PT
| دبوس 1 | OSC1/CLKIN — Oscillator input / external clock input |
| دبوس 2 | OSC2/CLKOUT — Oscillator output / clock output |
| دبوس 3 | MCLR/VPP — Master clear (reset) / programming voltage |
| دبوس 4 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| دبوس 5 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| دبوس 6 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| دبوس 7 | RA3/AN3/VREF — PORTA bit 3 / analog input 3 / VREF |
| دبوس 8 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| دبوس 9 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / SPI slave select |
| دبوس 10 | VSS — Ground |
| دبوس 11 | VDD — Positive supply voltage |
| دبوس 12 | RB0/INT — PORTB bit 0 / external interrupt |
| دبوس 13 | RB1 — PORTB bit 1 |
| دبوس 14 | RB2 — PORTB bit 2 |
| دبوس 15 | RB3 — PORTB bit 3 |
| دبوس 16 | RB4 — PORTB bit 4 |
| دبوس 17 | RB5 — PORTB bit 5 |
| دبوس 18 | RB6/PGC — PORTB bit 6 / ICSP clock |
| دبوس 19 | RB7/PGD — PORTB bit 7 / ICSP data |
| دبوس 20 | VSS — Ground |
| دبوس 21 | VDD — Positive supply voltage |
| دبوس 22 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator out / Timer1 clock in |
| دبوس 23 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator in / CCP2 |
| دبوس 24 | RC2/CCP1 — PORTC bit 2 / CCP1 (PWM/capture/compare) |
| دبوس 25 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| دبوس 26 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| دبوس 27 | RC5/SDO — PORTC bit 5 / SPI data out |
| دبوس 28 | RC6/TX/CK — PORTC bit 6 / UART TX / clock |
| دبوس 29 | RC7/RX/DT — PORTC bit 7 / UART RX / data |
| دبوس 30 | VSS — Ground |
| دبوس 31 | VDD — Positive supply voltage |
| دبوس 32 | RD0/PSP0 — PORTD bit 0 / parallel slave port bit 0 |
| دبوس 33 | RD1/PSP1 — PORTD bit 1 / parallel slave port bit 1 |
| دبوس 34 | RD2/PSP2 — PORTD bit 2 / parallel slave port bit 2 |
| دبوس 35 | RD3/PSP3 — PORTD bit 3 / parallel slave port bit 3 |
| دبوس 36 | RD4/PSP4 — PORTD bit 4 / parallel slave port bit 4 |
| دبوس 37 | RD5/PSP5 — PORTD bit 5 / parallel slave port bit 5 |
| دبوس 38 | RD6/PSP6 — PORTD bit 6 / parallel slave port bit 6 |
| دبوس 39 | RD7/PSP7 — PORTD bit 7 / parallel slave port bit 7 |
| دبوس 40 | VSS — Ground |
| دبوس 41 | VDD — Positive supply voltage |
| دبوس 42 | RE0/RD/AN5 — PORTE bit 0 / read control / analog input 5 |
| دبوس 43 | RE1/WR/AN6 — PORTE bit 1 / write control / analog input 6 |
| دبوس 44 | RE2/CS/AN7 — PORTE bit 2 / chip select / analog input 7 |
التطبيقات النموذجية
PIC16C67-20I/PT مناسب لـ 6 التطبيقs: Industrial Control Systems, Motor Control and PWM Drives, Instrumentation and Data Acquisition, Consumer Appliance Controllers, Automotive Subsystems (Non-Safety), Educational and Legacy Development.
Industrial Control Systems
The PIC16C67-20I/PT's industrial -40C to +85C temperature range and 20 MHz RISC core make it suitable for industrial control PLCs, sensor interface boards, and machine controllers. With 33 I/O pins it directly drives relays, optocouplers, and discrete logic; the OTP memory secures firmware against reverse engineering in volume production. The 44-TQFP package fits standard industrial PCB form factors and survives factory-floor vibration. Per Microchip datasheet section 1.0, the 14-bit instruction set provides deterministic 200 ns cycle time for real-time control loops.
موصى به
Motor Control and PWM Drives
The PIC16C67-20I/PT's 20 MHz instruction rate and built-in CCP (Capture/Compare/PWM) modules support brushed DC and stepper motor control. With 33 I/O and multiple timer channels, it generates PWM outputs for H-bridge drivers, reads quadrature encoders, and runs PI control loops in software. The industrial temperature grade handles the thermal environment inside motor-control enclosures. OTP memory locks the tuning firmware to prevent unauthorized modification of motor parameters in OEM equipment.
موصى به
Instrumentation and Data Acquisition
With its 10-bit ADC (per Microchip datasheet) and 33 I/O for keypad/display interfacing, the PIC16C67-20I/PT fits portable instrumentation such as digital multimeters, environmental monitors, and bench-top test gear. The 14KB OTP program memory holds lookup tables, calibration constants, and user-interface code. Industrial temperature operation allows use in lab and field environments. The RISC architecture provides consistent timing for sampling-rate-critical measurements.
موصى به
Consumer Appliance Controllers
The PIC16C67-20I/PT's low cost and OTP memory make it ideal for high-volume consumer appliances - washing machines, microwave ovens, dishwasher control boards, and HVAC thermostats. The 33 I/O pins drive seven-segment displays, keypad matrices, and triac-control optocouplers. The industrial temperature range handles appliance interior conditions. Once firmware is finalized, OTP programming prevents post-production tampering that could bypass safety interlocks.
موصى به
Automotive Subsystems (Non-Safety)
Although not AEC-Q100 qualified, the PIC16C67-20I/PT finds use in non-safety automotive subsystems like interior lighting controllers, accessory timers, and aftermarket modules. Its industrial temperature range covers most cabin environments. The 20 MHz RISC core handles CAN/LIN software stacks via MCP2515/MCP2025 transceivers. Engineers should review Microchip's automotive-grade PIC18F alternatives for safety-critical applications and verify OEM requirements for new automotive designs.
موصى به
Educational and Legacy Development
The PIC16C67-20I/PT is widely used in university curricula and legacy industrial controllers because of its classic PIC16C architecture and extensive documentation. Educational labs benefit from the OTP memory's 'one-time-programmable' teaching discipline - students learn to verify code thoroughly before programming production parts. The 44-TQFP package exposes all peripherals for breadboard and protoboard experimentation, and MPLAB X IDE provides free C compiler support.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC16C67-20I/PT — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | PIC16C67-20/PT | PIC16C67-10I/PT | PIC16F77-I/PT | PIC16F874A-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-TQFP (10x10 mm) | 44-TQFP - same | 44-TQFP - same | 44-TQFP - same | 44-TQFP - same |
| Core | 8-bit PIC | 8-bit PIC | 8-bit PIC | 8-bit PIC | 8-bit PIC |
| Maximum Clock | 20 MHz | 20 MHz | 10 MHz | 20 MHz | 20 MHz |
| Program Memory | 14KB OTP | 14KB OTP | 14KB OTP | 14KB Flash | 7KB Flash |
| Memory Type | OTP | OTP | OTP | Flash (reprogrammable) | Flash (reprogrammable) |
| RAM Size | 368 bytes | 368 bytes | 368 bytes | 368 bytes | 192 bytes |
| I/O Pins | 33 | 33 | 33 | 33 | 33 |
| Operating Temperature | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Reprogrammable | No (OTP) | No (OTP) | No (OTP) | Yes (Flash) | Yes (Flash) |
أبرز الفروقات
- Highest 20 MHz speed grade in PIC16C67 family (مقابلPIC16C67-10I/PT)
- Industrial temperature grade vs commercial only (مقابلPIC16C67-20/PT)
- Code security via OTP memory (مقابلPIC16F77-I/PT)
- 44-TQFP footprint matches Flash-based successors (مقابلPIC16F874A-I/PT)
ملاحظات التصميم
OTP (One-Time Programmable) memory cannot be erased. Per Microchip application note TB017, every production unit must be programmed with verified final code - mistakes or last-minute firmware changes require new parts. Design your development flow with Flash-based PIC16F77 or PIC16F877A first, then transition to PIC16C67 for production. The MPLAB PM3 programmer supports both families, simplifying the migration path.
Place decoupling capacitors (0.1uF ceramic) on every VDD pin (pins 11, 21, 31, 41) as close as possible to the package. Add a bulk 10uF tantalum or ceramic capacitor at the MCU power entry point. Per the PIC16C6x datasheet, four VDD pins and four VSS pins are provided to reduce ground bounce - all must be connected even if some appear redundant. Leave the ICSP pins (RB6/PGC and RB7/PGD) accessible for programming and debugging.
The 44-TQFP package has 0.8 mm pitch and is challenging to hand-solder. Use a hot-air rework station or reflow soldering for prototype assembly. For breadboard prototyping, consider the PIC16C67-20I/L (44-PLCC) variant with socket-compatible through-hole leads. The TQFP's thermal pad is not present - rely on PCB copper pour to dissipate the 5-10 mW typical power dissipation of this MCU.
Per Microchip datasheet, PIC16C67 typical supply current is < 2 mA at 5V/4 MHz and approximately 10 mA at 20 MHz. Brown-out reset (BOR) is enabled by configuration fuses - leave it enabled for industrial applications to prevent code execution at low VDD. Watchdog timer (WDT) should be enabled for unattended embedded systems; service it in software regularly to prevent unintended resets during normal operation.
معلومات الامتثال
RoHS and lead-free status not directly stated in the verified web snippets - confirm via Microchip Material Declaration Sheet (MDS) before shipping to EU. Not AEC-Q100 qualified; do not use for automotive safety-critical applications. Conflict-minerals compliance per Microchip supplier declarations.