PIC16C67-20I/PT - 8-bit 20MHz 14KB OTP MCU 44-TQFP | Microchip
MPN: PIC16C67-20I/PT ✓ פעילPIC16C67-20I/PT סקירה
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.
חלופות תחליף ישיר עבור PIC16C67-20I/PT — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC16C67-20I/PT (אותו גורם צורה וטביעת רגל) — שונים ב Program Memory Size, Timers, Program Memory Type, Package, ADC.
PIC16C67-20/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16C67-10I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16C67-04I/PT
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC16F77-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16F874A-I/PT
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC16C67-20I/PT דירוגים מרביים ומאפיינים חשמליים
| 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 |
| תדר שעון מקסימלי | 20 MHz |
| טווח טמפרטורת פעולה | -40C to +85C (Industrial) |
| מארז | 44-pin TQFP (10x10 mm) |
| סוג הרכבה | Surface Mount |
| Communications | UART, SPI, I2C (per datasheet) |
תצורת פינים של PIC16C67-20I/PT
| פין 1 | OSC1/CLKIN — Oscillator input / external clock input |
| פין 2 | OSC2/CLKOUT — Oscillator output / clock output |
| פין 3 | MCLR/VPP — Master clear (reset) / programming voltage |
| פין 4 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| פין 5 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| פין 6 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| פין 7 | RA3/AN3/VREF — PORTA bit 3 / analog input 3 / VREF |
| פין 8 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| פין 9 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / SPI slave select |
| פין 10 | VSS — Ground |
| פין 11 | VDD — Positive supply voltage |
| פין 12 | RB0/INT — PORTB bit 0 / external interrupt |
| פין 13 | RB1 — PORTB bit 1 |
| פין 14 | RB2 — PORTB bit 2 |
| פין 15 | RB3 — PORTB bit 3 |
| פין 16 | RB4 — PORTB bit 4 |
| פין 17 | RB5 — PORTB bit 5 |
| פין 18 | RB6/PGC — PORTB bit 6 / ICSP clock |
| פין 19 | RB7/PGD — PORTB bit 7 / ICSP data |
| פין 20 | VSS — Ground |
| פין 21 | VDD — Positive supply voltage |
| פין 22 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator out / Timer1 clock in |
| פין 23 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator in / CCP2 |
| פין 24 | RC2/CCP1 — PORTC bit 2 / CCP1 (PWM/capture/compare) |
| פין 25 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| פין 26 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| פין 27 | RC5/SDO — PORTC bit 5 / SPI data out |
| פין 28 | RC6/TX/CK — PORTC bit 6 / UART TX / clock |
| פין 29 | RC7/RX/DT — PORTC bit 7 / UART RX / data |
| פין 30 | VSS — Ground |
| פין 31 | VDD — Positive supply voltage |
| פין 32 | RD0/PSP0 — PORTD bit 0 / parallel slave port bit 0 |
| פין 33 | RD1/PSP1 — PORTD bit 1 / parallel slave port bit 1 |
| פין 34 | RD2/PSP2 — PORTD bit 2 / parallel slave port bit 2 |
| פין 35 | RD3/PSP3 — PORTD bit 3 / parallel slave port bit 3 |
| פין 36 | RD4/PSP4 — PORTD bit 4 / parallel slave port bit 4 |
| פין 37 | RD5/PSP5 — PORTD bit 5 / parallel slave port bit 5 |
| פין 38 | RD6/PSP6 — PORTD bit 6 / parallel slave port bit 6 |
| פין 39 | RD7/PSP7 — PORTD bit 7 / parallel slave port bit 7 |
| פין 40 | VSS — Ground |
| פין 41 | VDD — Positive supply voltage |
| פין 42 | RE0/RD/AN5 — PORTE bit 0 / read control / analog input 5 |
| פין 43 | RE1/WR/AN6 — PORTE bit 1 / write control / analog input 6 |
| פין 44 | RE2/CS/AN7 — PORTE bit 2 / chip select / analog input 7 |
יישומים טיפוסיים
PIC16C67-20I/PT מתאים עבור 6 יישוםs: 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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC16C67-20I/PT — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | 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) |
מבדילים עיקריים
- Highest 20 MHz speed grade in PIC16C67 family (לעומתPIC16C67-10I/PT)
- Industrial temperature grade vs commercial only (לעומתPIC16C67-20/PT)
- Code security via OTP memory (לעומתPIC16F77-I/PT)
- 44-TQFP footprint matches Flash-based successors (לעומתPIC16F874A-I/PT)
הערות תכנון
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.
מידע על תאימות
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.