PIC16C67-20I/PT - 8-bit 20MHz 14KB OTP MCU 44-TQFP | Microchip
Référence : PIC16C67-20I/PT ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $7.9135 | $7,91 |
| 10 | $7.1 | $71,00 |
| 100 | $6.4 | $640,00 |
| 500 | $5.7 | $2 850,00 |
| 1 000 | $5.05 | $5 050,00 |
PIC16C67-20I/PT Présentation
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.
Alternatives de remplacement direct pour PIC16C67-20I/PT — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC16C67-20I/PT (même facteur de forme et même empreinte) — différant par Program Memory Size, Timers, Program Memory Type, Package, ADC.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16C67-20/PT
✅ Remplacement direct✓ En stock
$5.95 / unité
Voir la fiche technique →PIC16C67-10I/PT
✅ Remplacement direct✓ En stock
$5.1 / unité
Voir la fiche technique →PIC16C67-04I/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16F77-I/PT
✅ Remplacement direct✓ En stock
$5.4 / unité
Voir la fiche technique →PIC16F874A-I/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16C67-20I/PT Valeurs maximales et caractéristiques électriques
| 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 |
| Fréquence d'horloge maximale | 20 MHz |
| Plage de température de fonctionnement | -40C to +85C (Industrial) |
| Boîtier | 44-pin TQFP (10x10 mm) |
| Type de montage | Surface Mount |
| Communications | UART, SPI, I2C (per datasheet) |
Configuration des broches de PIC16C67-20I/PT
| Broche 1 | OSC1/CLKIN — Oscillator input / external clock input |
| Broche 2 | OSC2/CLKOUT — Oscillator output / clock output |
| Broche 3 | MCLR/VPP — Master clear (reset) / programming voltage |
| Broche 4 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Broche 5 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Broche 6 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| Broche 7 | RA3/AN3/VREF — PORTA bit 3 / analog input 3 / VREF |
| Broche 8 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Broche 9 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / SPI slave select |
| Broche 10 | VSS — Ground |
| Broche 11 | VDD — Positive supply voltage |
| Broche 12 | RB0/INT — PORTB bit 0 / external interrupt |
| Broche 13 | RB1 — PORTB bit 1 |
| Broche 14 | RB2 — PORTB bit 2 |
| Broche 15 | RB3 — PORTB bit 3 |
| Broche 16 | RB4 — PORTB bit 4 |
| Broche 17 | RB5 — PORTB bit 5 |
| Broche 18 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Broche 19 | RB7/PGD — PORTB bit 7 / ICSP data |
| Broche 20 | VSS — Ground |
| Broche 21 | VDD — Positive supply voltage |
| Broche 22 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator out / Timer1 clock in |
| Broche 23 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator in / CCP2 |
| Broche 24 | RC2/CCP1 — PORTC bit 2 / CCP1 (PWM/capture/compare) |
| Broche 25 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Broche 26 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Broche 27 | RC5/SDO — PORTC bit 5 / SPI data out |
| Broche 28 | RC6/TX/CK — PORTC bit 6 / UART TX / clock |
| Broche 29 | RC7/RX/DT — PORTC bit 7 / UART RX / data |
| Broche 30 | VSS — Ground |
| Broche 31 | VDD — Positive supply voltage |
| Broche 32 | RD0/PSP0 — PORTD bit 0 / parallel slave port bit 0 |
| Broche 33 | RD1/PSP1 — PORTD bit 1 / parallel slave port bit 1 |
| Broche 34 | RD2/PSP2 — PORTD bit 2 / parallel slave port bit 2 |
| Broche 35 | RD3/PSP3 — PORTD bit 3 / parallel slave port bit 3 |
| Broche 36 | RD4/PSP4 — PORTD bit 4 / parallel slave port bit 4 |
| Broche 37 | RD5/PSP5 — PORTD bit 5 / parallel slave port bit 5 |
| Broche 38 | RD6/PSP6 — PORTD bit 6 / parallel slave port bit 6 |
| Broche 39 | RD7/PSP7 — PORTD bit 7 / parallel slave port bit 7 |
| Broche 40 | VSS — Ground |
| Broche 41 | VDD — Positive supply voltage |
| Broche 42 | RE0/RD/AN5 — PORTE bit 0 / read control / analog input 5 |
| Broche 43 | RE1/WR/AN6 — PORTE bit 1 / write control / analog input 6 |
| Broche 44 | RE2/CS/AN7 — PORTE bit 2 / chip select / analog input 7 |
Applications typiques
PIC16C67-20I/PT convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16C67-20I/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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) |
Principaux différenciateurs
- Highest 20 MHz speed grade in PIC16C67 family (vs PIC16C67-10I/PT)
- Industrial temperature grade vs commercial only (vs PIC16C67-20/PT)
- Code security via OTP memory (vs PIC16F77-I/PT)
- 44-TQFP footprint matches Flash-based successors (vs PIC16F874A-I/PT)
Notes de conception
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.
Informations de conformité
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.