PIC16C67-04I/L - 4MHz 8-Bit OTP MCU 14KB | Microchip PLCC-44
MPN: PIC16C67-04I/L ✗ پایان تولیدPIC16C67-04I/L نمای کلی
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, I/O peripherals, and timers onto one die; the PIC16C family is one of the canonical 8-bit RISC architectures and occupies the "8-bit MCU -> general-purpose microcontroller -> embedded controller" branch of the broader semiconductor hierarchy. PIC16C6x parts target low-power, high-volume embedded designs that need more I/O and memory than the PIC16C5x baseline while retaining the classic 35-instruction, single-cycle PIC core. OTP (One-Time-Programmable) EPROM program memory suits mature production runs where firmware is fixed and field updates are not required.
Key features of the PIC16C67-04I/L include: 4 MHz maximum clock input (4 MHz internal operation across 4.5 V to 5.5 V), 8 K x 14 (14 KB) OTP program memory, 368 bytes RAM, 33 I/O pins with peripheral compatibility, three timers (Timer0/Timer1/Timer2), and an integrated analog comparator. The device adds a synchronous serial port (SSP) supporting SPI and I2C master/slave modes, plus a USART/SCI for asynchronous or synchronous serial communication. It is built on Microchip's low-power CMOS EPROM technology, drawing typically 15 µA at 5 V / 4 MHz and only 1 µA at 3 V / 32 kHz in standby.
The architecture is fully static, allowing the clock to be stopped without losing register state, and provides multiple oscillator options (crystal, ceramic resonator, or external clock). Industrial temperature range (-40°C to +85°C) and brown-out reset are supported, making the part suitable for harsher environments than consumer-grade PICs. Compared to the PIC16C66, the PIC16C67 adds the SSP module and additional RAM, sitting one rung below the PIC16C77 in the family.
Typical applications include industrial control boards, HVAC interface panels, sensor hubs, motor-control front ends, smart instrumentation, and embedded serial-connected peripherals. Its 33 I/O and SSP/USART combo make it well suited to mid-density glue-logic replacement and legacy equipment retrofits.
When designing with this part, remember that OTP memory cannot be rewritten: program the blank device once with a Microchip programmer such as the MPLAB PM3, and reserve sufficient code space in 8K x 14 for future iterations during prototyping. For development, prefer a JW (windowed) or flash-based PIC16F equivalent.
This page synthesizes distributor stock, parametric drop-in alternatives in the same PLCC-44 footprint, and engineering design notes not present in the bare manufacturer datasheet.
جایگزین‌های drop-in برای PIC16C67-04I/L — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای PIC16C67-04I/L (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Instruction Cycle Time, Package, Timers, Core Architecture, Mounting Type.
PIC16C67-04I/PQ
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16C67T-04I/L
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16C67S-04I/L
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC16C66-04I/L
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC16C67-04/PQ
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16C67-04/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16C67-20/L
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16C67-04I/L حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core | 8-bit PIC16C RISC |
| Architecture | Harvard, fully static CMOS |
| حداکثر فرکانس کلاک | 4 MHz |
| Instruction Cycle Time | 200 ns (single-cycle) |
| Program Memory | 14 KB (8 K x 14) OTP EPROM |
| RAM | 368 bytes |
| Data EEPROM | Not present |
| I/O Pins | 33 |
| Supply Voltage (Vdd) | 4.5 V to 5.5 V |
| محدوده دمای کاری | -40 C to +85 C (Industrial) |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Analog Comparator | Yes, integrated |
| Serial Interfaces | SSP (SPI / I2C), USART/SCI |
| Oscillator Modes | Crystal/Resonator, RC, External Clock |
| بسته‌بندی | 44-PLCC (LCC-44, 16.59 x 16.59 mm) |
| نوع نصب | Surface Mount (J-Lead) |
| Programmer Support | MPLAB PM3, PRO MATE II |
| وضعیت RoHS | Compliant |
پیکربندی پین PIC16C67-04I/L
| پین 1 | RA0/AN0 — Bidirectional I/O / analog comparator input |
| پین 2 | RA1/AN1 — Bidirectional I/O / analog comparator input |
| پین 3 | RA2/AN2 — Bidirectional I/O / analog comparator input |
| پین 4 | RA3/AN3/VREF — Bidirectional I/O / VREF for comparator |
| پین 5 | RA4/T0CKI — Bidirectional I/O / Timer0 clock input |
| پین 6 | RA5/SS/AN4 — Bidirectional I/O / SSP slave select |
| پین 7 | OSC1/CLKIN — Oscillator crystal input / external clock |
| پین 8 | OSC2/CLKOUT — Oscillator crystal output / clock out |
| پین 9 | MCLR/VPP — Master clear reset / programming voltage |
| پین 10 | VSS — Ground reference |
| پین 11 | VDD — Positive supply (4.5 V to 5.5 V) |
| پین 12 | RB0/INT — Bidirectional I/O / external interrupt |
| پین 13 | RB1 — Bidirectional I/O |
| پین 14 | RB2 — Bidirectional I/O |
| پین 15 | RB3 — Bidirectional I/O |
| پین 16 | RB4 — Bidirectional I/O |
| پین 17 | RB5 — Bidirectional I/O |
| پین 18 | RB6/PGC — Bidirectional I/O / ICSP clock |
| پین 19 | RB7/PGD — Bidirectional I/O / ICSP data |
| پین 20 | RC0/T1OSO/T1CKI — Bidirectional I/O / Timer1 oscillator / clock |
| پین 21 | RC1/T1OSI/CCP2 — Bidirectional I/O / Timer1 osc / Capture-Compare |
| پین 22 | RC2/CCP1 — Bidirectional I/O / Capture-Compare PWM |
| پین 23 | RC3/SCK/SCL — Bidirectional I/O / SSP clock |
| پین 24 | RD0/PSP0 — Bidirectional I/O / parallel slave port bit 0 |
| پین 25 | RD1/PSP1 — Bidirectional I/O / parallel slave port bit 1 |
| پین 26 | RD2/PSP2 — Bidirectional I/O / parallel slave port bit 2 |
| پین 27 | RD3/PSP3 — Bidirectional I/O / parallel slave port bit 3 |
| پین 28 | RC4/SDI/SDA — Bidirectional I/O / SSP data in |
| پین 29 | RC5/SDO — Bidirectional I/O / SSP data out |
| پین 30 | RC6/TX/CK — Bidirectional I/O / USART TX / clock |
| پین 31 | RC7/RX/DT — Bidirectional I/O / USART RX / data |
| پین 32 | RD4/PSP4 — Bidirectional I/O / parallel slave port bit 4 |
| پین 33 | RD5/PSP5 — Bidirectional I/O / parallel slave port bit 5 |
| پین 34 | RD6/PSP6 — Bidirectional I/O / parallel slave port bit 6 |
| پین 35 | RD7/PSP7 — Bidirectional I/O / parallel slave port bit 7 |
| پین 36 | RE0/RD/AN5 — Bidirectional I/O / parallel read |
| پین 37 | RE1/WR/AN6 — Bidirectional I/O / parallel write |
| پین 38 | RE2/CS/AN7 — Bidirectional I/O / parallel chip select |
| پین 39 | VDD — Positive supply (4.5 V to 5.5 V) |
| پین 40 | VSS — Ground reference |
| پین 41 | NC — Not connected (per datasheet) |
| پین 42 | NC — Not connected (per datasheet) |
| پین 43 | NC — Not connected (per datasheet) |
| پین 44 | NC — Not connected (per datasheet) |
کاربردهای معمول
PIC16C67-04I/L مناسب است برای 6 کاربردs: Industrial Control Boards, HVAC Interface Panels, Sensor Hub and Data Aggregator, Motor Control Front End, Smart Instrumentation Modules, Embedded Serial Peripherals.
Industrial Control Boards
The PIC16C67-04I/L fits industrial control boards because it offers 33 I/O pins, 14 KB of OTP for fixed firmware control loops, and an industrial -40 C to +85 C temperature range. Its 4 MHz clock and 200 ns instruction cycle provide deterministic loop times for PID and state-machine implementations, while the integrated analog comparator and three timers handle sensor sampling and PWM outputs. Compared to switching to a soft-core or higher-end MCU, the PIC16C67-04I/L delivers the right I/O-to-cost ratio for legacy line-replacement designs where firmware is already locked and verified.
پیشنهادی
HVAC Interface Panels
For HVAC user-interface panels, the PIC16C67-04I/L's 33 I/O pins drive 7-segment displays, keypads, status LEDs, and triac-fired outputs without external glue logic. The 14 KB OTP program memory comfortably stores menu logic, scheduling routines, and Modbus or simple UART communication stacks. Its 1 µA standby current at 3 V / 32 kHz helps meet energy-saving regulations for thermostat products. Compared to a CPLD plus display driver, a single PIC16C67-04I/L reduces BOM count and PCB area.
پیشنهادی
Sensor Hub and Data Aggregator
The PIC16C67-04I/L serves as a sensor hub because its SSP (SPI/I2C) peripheral and USART can simultaneously interface with multiple digital sensors and report aggregated data upstream. The 368-byte RAM buffers 50 to 100 sensor readings at typical 4-byte payloads, and the 14 KB OTP holds the sensor-driver stack and simple statistical processing. Industrial temperature support means it can be deployed near motor cabinets and other harsh factory environments. Compared to bare 8051 designs, the PIC16C67-04I/L's low 15 µA active current at 5 V reduces heat rise in dense sensor enclosures.
پیشنهادی
Motor Control Front End
The PIC16C67-04I/L works as a motor-control front end because its three timers and analog comparator provide the PWM generation and current-feedback sampling needed for low-DC motor and small stepper control. The 33 I/O pins drive direction logic, fault inputs, and optically isolated gate-drive signals. OTP memory secures the motor-startup ramp profile against unauthorized modification. Compared to dedicated motor-controller ASICs, the PIC16C67-04I/L offers reprogrammable logic during development while preserving OTP-only production stability.
پیشنهادی
Smart Instrumentation Modules
The PIC16C67-04I/L is well suited to smart instrumentation such as panel meters, scales, and process indicators because it can read an analog front end via the integrated comparator, drive a character LCD via software-strobed I/O, and communicate results over the USART or SSP. With 14 KB of OTP, full calibration tables and unit-conversion routines fit comfortably. Compared to a discrete logic implementation, the PIC16C67-04I/L delivers lower BOM cost and easier compliance documentation due to a single, qualified MCU supplier.
پیشنهادی
Embedded Serial Peripherals
For serial-connected peripherals such as protocol converters and gateway slaves, the PIC16C67-04I/L's combined USART and SSP let it bridge between SPI sensors and an RS-485 or RS-232 host. The 368-byte RAM is sufficient for short packet buffers, and the 14 KB OTP accommodates the protocol stack plus command parser. Industrial temperature rating allows outdoor or cabinet-mounted installation. Compared to higher-end Cortex-M0 parts, the PIC16C67-04I/L delivers a lower price point for high-volume gateway products where firmware is locked.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای PIC16C67-04I/L — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | PIC16C67-04I/PQ | PIC16C67T-04I/L | PIC16C67S-04I/L | PIC16C66-04I/L | PIC16C67-04/PQ | PIC16C67-04/PT | PIC16C67-20/L |
|---|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-PLCC (L, J-Lead, 16.59x16.59 mm) | 44-PLCC (PQ) - same PLCC-44 | 44-PLCC (L) - same | 44-PLCC (L) - same | 44-PLCC (L) - same | 44-PLCC (PQ) - same | 44-TQFP (PT) - same 44-pin count, TQFP body | 44-PLCC (L) - same |
| Clock Speed (max) | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz (+400%) |
| Program Memory (OTP) | 14 KB (8K x 14) | 14 KB | 14 KB | 14 KB | 8 KB (-43%) | 14 KB | 14 KB | 14 KB |
| RAM | 368 bytes | 368 bytes | 368 bytes | 368 bytes | 368 bytes | 368 bytes | 368 bytes | 368 bytes |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 |
| Temperature Range | -40 C to +85 C (Industrial) | -40 to +85 C | -40 to +85 C | -40 to +85 C | -40 to +85 C | 0 to +70 C (Commercial) | 0 to +70 C (Commercial) | 0 to +70 C (Commercial) |
| SSP (SPI/I2C) | Yes | Yes | Yes | Yes | No | Yes | Yes | Yes |
تفاوت‌های کلیدی
- Higher-density OTP (14 KB) with SSP module for SPI/I2C (در مقابلPIC16C66-04I/L)
- Same 33 I/O and same PLCC-44 family with slower clock for harsh environments (در مقابلPIC16C67-20/L)
- Pin-compatible with PIC16C66 family - easiest upgrade path (در مقابلPIC16F877-04I/P)
یادداشت‌های طراحی
The PIC16C67-04I/L uses One-Time-Programmable (OTP) EPROM - once programmed, the firmware cannot be erased or rewritten. For development cycles, prototype with a windowed PIC16C67-04/JW (ceramic windowed package) or a flash-based PIC16F877-04I/P that shares the same peripheral set. Do not mass-program OTP devices until firmware is locked and verified; each programmed but defective OTP unit must be physically discarded.
Brown-out-reset (BOR) is implemented in the PIC16C67 configuration bits and is highly recommended for industrial deployments. At 5 V typical operation, place a 100 nF ceramic decoupling capacitor as close as physically possible to the VDD pin pair (pins 11 and 39) and a bulk 10 uF tantalum or aluminum cap on the board supply rail. Without decoupling, the internal POR may glitch and cause spurious resets during high-current I/O switching events.
Route the OSC1/OSC2 traces (pins 7 and 8) short and symmetric to minimize parasitic capacitance, and place the load capacitors within 5 mm of the oscillator pins. Keep the MCLR/VPP trace (pin 9) short to the reset supervisor; add a 10 kohm pull-up to VDD and a 100 nF cap to ground for reliable in-circuit serial programming (ICSP). Pin 1 mark on PLCC packages is typically adjacent to the chamfered corner.
Estimated: at 4 MHz, 5 V, and full I/O toggling, the PIC16C67-04I/L typically draws about 15 mA. With PLCC-44 theta_JA of approximately 50 C/W on a 2-layer FR-4 board, junction temperature rise above ambient is roughly 38 C - well within the 125 C maximum for industrial-grade silicon. Provide at least 1 square inch of unbroken ground copper under the PLCC body for optimal heat spreading in enclosed industrial cabinets.
اطلاعات انطباق
RoHS compliant per Microchip product page. AEC-Q100 not applicable - this is a general-purpose industrial MCU; automotive customers should select PIC16C67-04I/L-QT variants or migrate to AEC-Q100 qualified PIC18F or dsPIC families. Lead-free matte-tin PLCC finish.
