PIC16C67-04E/PQ - 8-bit 4MHz OTP MCU, 44-MQFP | Microchip
MPN: PIC16C67-04E/PQ ✗ Cuối đờiPIC16C67-04E/PQ Tóm tắt
A PIC16C microcontroller belongs to the family of low-cost, high-performance, fully-static 8-bit CMOS microcontrollers built on Microchip's RISC architecture. Within the broader system hierarchy, a PIC16C6X MCU sits below: PIC microcontroller -> 8-bit RISC MCU -> embedded controller -> semiconductor device. The 16C series uses EPROM/ROM-based program memory rather than Flash, making it suitable for mature, stable production runs where code changes are infrequent.
Key features include 33 digital I/O pins, three timer/counter modules (Timer0, Timer1, Timer2), a 10-bit multi-channel Analog-to-Digital Converter (ADC), a Universal Synchronous Asynchronous Receiver Transmitter (USART), and a Capture/Compare/PWM (CCP) module. The device supports both parallel (parallel slave port) and serial programming modes and offers low-power consumption: typical 15 uA at 5V/4 MHz and 1 uA at 3V/32 kHz in sleep mode.
The PIC16C67 is built on a Harvard architecture with separate program and data buses, executing most instructions in a single instruction cycle (4 clock cycles). This RISC design delivers predictable real-time performance with only 35 single-word instructions to learn. The wide operating voltage range of 2.5V to 6.0V (per the PIC16C6X datasheet family specification) supports battery-backed and industrial environments.
Typical applications include industrial control systems, motor control front-ends, sensor interfacing boards, instrumentation, and embedded legacy products where PIC16C codebases are maintained. The 33 I/O pins and integrated peripherals also suit automotive accessory controllers and HVAC interface modules within the Extended temperature range.
When designing with this device, ensure in-circuit serial programming (ICSP) access is preserved on the PCB for OTP programming, and budget for a quartz crystal or resonator since the 04 speed grade specifies a 4 MHz maximum clock. Decoupling capacitors should be placed adjacent to VDD/VSS pairs to maintain ADC accuracy.
This page consolidates distributor pricing, drop-in same-package alternatives, and practical design notes not found in the standalone manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC16C67-04E/PQ — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16C67-04E/PQ (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, Program Memory Size, Operating Temperature Range, Mounting Type.
PIC16C67-04/PQ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C67-10/PQ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C67-20/PQ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C67-04I/PQ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F877-04I/PQ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C67-04E/PQ Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit PIC16C RISC (Harvard) |
| Program Memory Size | 14 KB (8K x 14) OTP EPROM |
| Data RAM | 368 bytes |
| Tần số xung maksimum | 4 MHz |
| Operating Voltage Range | 2.5 V to 6.0 V |
| I/O Pins | 33 |
| ADC | 10-bit, 8 channels |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Communication Interfaces | USART, Parallel Slave Port |
| CCP Module | Yes (Capture/Compare/PWM) |
| Instruction Set | 35 single-word instructions |
| Program Memory Type | OTP (One-Time Programmable) EPROM |
| Khoảng nhiệt độ hoạt động | -40 C to +125 C (Extended, "E" grade) |
| Hộp | 44-MQFP (10x10 mm) |
| Kiểu lắp đặt | Surface Mount |
| Power Consumption (active) | 15 uA typical at 5 V / 4 MHz |
| Power Consumption (sleep) | 1 uA typical at 3 V / 32 kHz |
Cấu hình chân PIC16C67-04E/PQ
| Chân 1 | MCLR#/VPP — Master clear (reset) input / programming voltage |
| Chân 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Chân 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Chân 4 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| Chân 5 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / ADC reference |
| Chân 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Chân 7 | RA5/AN4/SS# — PORTA bit 5 / analog input 4 / slave select |
| Chân 8 | RE0/RD#/AN5 — PORTE bit 0 / read control / analog input 5 |
| Chân 9 | RE1/WR#/AN6 — PORTE bit 1 / write control / analog input 6 |
| Chân 10 | RE2/CS#/AN7 — PORTE bit 2 / chip select / analog input 7 |
| Chân 11 | VDD — Positive power supply |
| Chân 12 | VSS — Ground |
| Chân 13 | OSC1/CLKIN — Oscillator input / external clock |
| Chân 14 | OSC2/CLKOUT — Oscillator output / clock out |
| Chân 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / clock input |
| Chân 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Chân 17 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 |
| Chân 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 19 | RD0/PSP0 — PORTD bit 0 / parallel slave port bit 0 |
| Chân 20 | RD1/PSP1 — PORTD bit 1 / parallel slave port bit 1 |
| Chân 21 | RD2/PSP2 — PORTD bit 2 / parallel slave port bit 2 |
| Chân 22 | RD3/PSP3 — PORTD bit 3 / parallel slave port bit 3 |
| Chân 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Chân 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| Chân 25 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| Chân 26 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| Chân 27 | RD4/PSP4 — PORTD bit 4 / parallel slave port bit 4 |
| Chân 28 | RD5/PSP5 — PORTD bit 5 / parallel slave port bit 5 |
| Chân 29 | RD6/PSP6 — PORTD bit 6 / parallel slave port bit 6 |
| Chân 30 | RD7/PSP7 — PORTD bit 7 / parallel slave port bit 7 |
| Chân 31 | VSS — Ground |
| Chân 32 | VDD — Positive power supply |
| Chân 33 | RB0/INT — PORTB bit 0 / external interrupt |
| Chân 34 | RB1 — PORTB bit 1 |
| Chân 35 | RB2 — PORTB bit 2 |
| Chân 36 | RB3 — PORTB bit 3 |
| Chân 37 | RB4 — PORTB bit 4 |
| Chân 38 | RB5 — PORTB bit 5 |
| Chân 39 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Chân 40 | RB7/PGD — PORTB bit 7 / ICSP data |
| Chân 41 | NC — Not connected |
| Chân 42 | NC — Not connected |
| Chân 43 | NC — Not connected |
| Chân 44 | NC — Not connected |
Ứng dụng tiêu biểu
PIC16C67-04E/PQ phù hợp cho 6 Áp dụngs: Industrial Process Control Front-Ends, Automotive Accessory Controllers, HVAC Interface Modules, Sensor Interfacing and Data Acquisition Boards, Legacy Embedded Product Maintenance, Educational and Prototyping Boards.
Industrial Process Control Front-Ends
The PIC16C67-04E/PQ suits industrial process control front-ends where Extended temperature grade and stable OTP code are priorities. Its 33 I/O lines interface with sensors, switches, and indicator LEDs; the 10-bit 8-channel ADC reads 4-20 mA loop transmitters, thermocouple amplifiers, and pressure transducers; and the USART links to main PLCs or HMIs. The 4 MHz clock rate is sufficient for scan cycles under 10 ms in typical PID loops. A practical design places the MCU near the analog front-end with 0.1 uF decoupling on each VDD/VSS pair and routes the ADC reference pin (RA3) to a low-noise buffer.
Được đề xuất
Automotive Accessory Controllers
Within automotive accessory subsystems - climate controls, mirror adjusters, lighting modules - the PIC16C67-04E/PQ provides Extended temperature tolerance (-40 C to +125 C) and 33 I/O lines for switches, relays, and LIN-bus transceivers. The CCP module generates PWM for LED dimming and motor speed, while the 10-bit ADC reads potentiometer positions and current shunts. The 4 MHz clock handles standard accessory loops; for body-control modules requiring CAN, migrate to PIC18F258. The OTP memory prevents firmware tampering and accidental reflashing in the field, which is sometimes a regulatory advantage.
Được đề xuất
HVAC Interface Modules
HVAC interface modules - thermostat displays, zone controllers, damper actuators - benefit from the PIC16C67-04E/PQ's 33 I/O pins to drive 7-segment or LCD character displays, scan keypads, and read temperature/humidity sensors. The 10-bit ADC provides 0.5 C resolution across typical 0-50 C ranges, and the USART connects to indoor air-quality sensors or whole-house controllers. Extended temperature tolerance supports unconditioned mechanical rooms. For modern communicating thermostats requiring Wi-Fi, pair with an ESP32 co-processor and use the PIC for legacy HVAC bus control.
Được đề xuất
Sensor Interfacing and Data Acquisition Boards
Multi-channel sensor data-acquisition boards leverage the PIC16C67-04E/PQ's 8-channel 10-bit ADC to aggregate strain-gauge, thermistor, and 4-20 mA inputs into a single USART stream to a host PC or PLC. With 4 MHz operation, the ADC throughput is roughly 20-30 ksamples/sec aggregate when channels are multiplexed. The Extended temperature range supports outdoor or factory-floor deployment. Engineers often pair this MCU with an MCP6022 op-amp front-end and a precision voltage reference such as the MCP1541 for 10-bit absolute accuracy.
Được đề xuất
Legacy Embedded Product Maintenance
The PIC16C67-04E/PQ remains in production-line sustainment for established embedded products whose firmware is locked in OTP memory. Industries such as medical instrumentation, defense, and industrial automation often maintain 10-15 year product lifecycles where OTP programming is preferred to prevent firmware drift. The Extended temperature grade ensures continued reliability. The 4 MHz throughput matches the design's original performance budget, and the 44-MQFP package keeps the original PCB layout intact. Migration to PIC16F877 is recommended when running change orders require firmware updates.
Được đề xuất
Educational and Prototyping Boards
Universities and embedded-systems training labs use PIC16C67-04E/PQ-equipped boards to teach RISC architecture, OTP programming workflows, and PIC instruction-set fundamentals. The 44-MQFP package is breadboardable via breakout adapters, and the 33 I/O lines accommodate lab exercises on seven-segment displays, keypads, and motor control. While PIC16F877 is preferred for student projects due to Flash flexibility, the PIC16C67 teaches important lessons about OTP programming trade-offs and irreversible firmware commitments - still relevant in safety-critical industrial design.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C67-04E/PQ — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC16C67-04/PQ | PIC16F877-04I/PQ | |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | |
| Package | 44-MQFP (10x10) | 44-MQFP (10x10) - same | 44-MQFP (10x10) - same | 44-MQFP (10x10) - same |
| Program Memory | 14 KB OTP EPROM | 14 KB OTP EPROM | 14 KB OTP EPROM | 14 KB Flash (reprogrammable) |
| RAM | 368 bytes | 368 bytes | 368 bytes | 368 bytes |
| Max Clock Frequency | 4 MHz | 4 MHz | 10 MHz | 4 MHz (Flash variant, also available up to 20 MHz) |
| Operating Temperature | -40 C to +125 C (Extended) | 0 C to +70 C (Commercial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| Memory Type | OTP (one-time) | OTP | Flash (reprogrammable) | |
| Lifecycle Status | NRND | NRND | Active (recommended for new designs) |
Bảo phân biệt quan trọng
- Extended temperature grade (-40 C to +125 C) for harsh-environment deployment (vsPIC16C67-04/PQ)
- Lower speed grade (4 MHz) optimizes power and EMI for sensor interfaces (vsPIC16C67-20/PQ)
- OTP memory provides firmware tamper-resistance for production runs (vsPIC16F877-04I/PQ)
Ghi chú thiết kế
Estimated: with active current of 15 uA typical at 5 V and 4 MHz, and sleep current of 1 uA at 3 V / 32 kHz, an average duty-cycled supply current for a 1% active-time sensor node is roughly (0.99 * 1 uA + 0.01 * 15 uA) = 1.14 uA average, enabling multi-year battery life on a single 220 mAh coin cell. Place a 10 uF bulk + 0.1 uF high-frequency decoupling pair adjacent to VDD pins (11 and 32) to suppress switching noise during oscillator transitions.
OTP memory can be programmed only ONCE; once written, the code is permanent. Verify all firmware builds thoroughly with the Flash-equivalent PIC16F877 before committing to OTP production programming. Always include an MCLR# pull-up (typically 10 kOhm to VDD) and place a decoupling capacitor directly on the MCLR# pin to prevent spurious resets during in-circuit programming or power-up brownout events.
Keep oscillator traces (OSC1/OSC2, pins 13/14) short and surrounded by a ground guard ring to minimize EMI. Route the analog reference pin (RA3/AN3/VREF+) separately from digital lines and bypass it with 0.1 uF + 10 uF capacitors close to the pin. For ADC accuracy at 10 bits, the analog ground should join the digital ground at a single point near the MCU's VSS pins (12 and 31).
Thông tin tuân thủ
RoHS and lead-free status not explicitly stated in the verified web data. PIC16C6X OTP family typically supplied as matte-tin finish suitable for lead-free reflow; verify with Microchip product documentation. AEC-Q100 qualification not claimed - this part targets industrial rather than automotive safety-critical applications.
