PIC16LC67T-04I/L - 8-Bit 4MHz MCU, 14KB OTP, 44-PLCC | Microchip
MPN: PIC16LC67T-04I/L ✗ Cuối đờiPIC16LC67T-04I/L Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/Flash/OTP), data RAM, and peripherals onto one silicon die. PIC16C-series MCUs use a Harvard RISC architecture with 35 single-word instructions, simplifying firmware development while delivering deterministic interrupt latency. The PIC16LC67 sits in the broader taxonomy as 8-bit MCU -> microcontroller -> embedded processor -> semiconductor, serving cost-sensitive embedded control roles where 16-bit or 32-bit performance is unnecessary.
Key features include three serial communication peripherals (I2C, SPI, and UART/USART), Brown-out Detect/Reset, Power-on Reset (POR), Pulse Width Modulation (PWM) outputs, and a Watchdog Timer (WDT). These on-chip peripherals reduce external component count and BOM cost for embedded designs. The 4MHz maximum clock frequency supports instruction-cycle execution at 1MHz (4:1 oscillator-to-instruction-clock divider), adequate for low-speed control loops, sensor interfacing, and human-machine interface tasks.
The PIC16LC67T-04I/L uses CMOS, fully-static design, allowing the clock to be slowed or stopped without losing internal state. Industrial temperature range (-40C to +85C) and 5V operation suit factory automation, instrumentation, and consumer appliances. The 44-PLCC package is socket-compatible with the legacy through-hole 40-pin DIP footprint adapters used in older designs, simplifying field retrofits.
Typical applications include industrial control panels, HVAC thermostat controllers, security alarm panels, simple sensor hubs, motor-control PWM drivers, and low-cost consumer devices. The combination of OTP memory (one-time programmable, no in-system reprogrammability) targets high-volume production runs where firmware is finalized before mask/OTP programming.
When designing with this part, note that OTP memory cannot be field-updated; design firmware carefully or evaluate the flash-based PIC16F877 equivalent for development. The 44-PLCC package requires a PLCC socket or reflow-compatible land pattern; verify socket tooling if the design is a retrofit.
This page synthesizes distributor pricing snapshots, drop-in alternative listings across the PIC16C6x family, and practical design notes not aggregated on any single manufacturer or distributor page.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC67T-04I/L — 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 PIC16LC67T-04I/L (cùng hình factor và footprint) — khác nhau ở Core Architecture, Package, Program Memory Size, ADC, Program Memory Type.
PIC16LC67-04I/L
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC67-04/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LC67T-04I/PQ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F877A-I/LG
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC66-04I/SP
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LC67T-04I/L Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit PIC RISC (Harvard) |
| Family | PIC16C |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 14 KB (8K x 14) |
| RAM Size | 368 bytes |
| Maximum CPU Frequency | 4 MHz |
| Operating Voltage | 5 V |
| Communication Interfaces | I2C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Package Type | 44-PLCC (J-Lead, 16.59 x 16.59 mm) |
| Temperature Grade | Industrial (-40C to +85C) |
| Kiểu lắp đặt | Surface Mount |
| Packaging | Tape & Reel (TR) |
Cấu hình chân PIC16LC67T-04I/L
| Chân 1 | RA2/AN2/VREF- — PORTA bit 2 / ADC input 2 / negative voltage reference |
| Chân 2 | RA3/AN3/VREF+ — PORTA bit 3 / ADC input 3 / positive voltage reference |
| Chân 3 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Chân 4 | RA5/SS/AN4 — PORTA bit 5 / SPI slave select / ADC input 4 |
| Chân 5 | RE0/RD/AN5 — PORTE bit 0 / parallel read control / ADC input 5 |
| Chân 6 | RE1/WR/AN6 — PORTE bit 1 / parallel write control / ADC input 6 |
| Chân 7 | RE2/CS/AN7 — PORTE bit 2 / parallel chip select / ADC input 7 |
| Chân 8 | VDD — Positive power supply (5V) |
| Chân 9 | VSS — Ground |
| Chân 10 | OSC1/CLKIN — Oscillator input / external clock input |
| Chân 11 | OSC2/CLKOUT — Oscillator output / clock output |
| Chân 12 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Chân 13 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 PWM output |
| Chân 14 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| Chân 15 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 16 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Chân 17 | RC5/SDO — PORTC bit 5 / SPI data out |
| Chân 18 | RC6/TX/CK — PORTC bit 6 / UART TX / USART clock |
| Chân 19 | RC7/RX/DT — PORTC bit 7 / UART RX / USART data |
| Chân 20 | RD0/PSP0 — PORTD bit 0 / parallel slave port bit 0 |
| Chân 21 | RD1/PSP1 — PORTD bit 1 / parallel slave port bit 1 |
| Chân 22 | RD2/PSP2 — PORTD bit 2 / parallel slave port bit 2 |
| Chân 23 | RD3/PSP3 — PORTD bit 3 / parallel slave port bit 3 |
| Chân 24 | RD4/PSP4 — PORTD bit 4 / parallel slave port bit 4 |
| Chân 25 | RD5/PSP5 — PORTD bit 5 / parallel slave port bit 5 |
| Chân 26 | RD6/PSP6 — PORTD bit 6 / parallel slave port bit 6 |
| Chân 27 | RD7/PSP7 — PORTD bit 7 / parallel slave port bit 7 |
| Chân 28 | VSS — Ground |
| Chân 29 | VDD — Positive power supply (5V) |
| Chân 30 | RB0/INT — PORTB bit 0 / external interrupt |
| Chân 31 | RB1 — PORTB bit 1 |
| Chân 32 | RB2 — PORTB bit 2 |
| Chân 33 | RB3/PGM — PORTB bit 3 / low-voltage programming |
| Chân 34 | RB4 — PORTB bit 4 |
| Chân 35 | RB5 — PORTB bit 5 |
| Chân 36 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Chân 37 | RB7/PGD — PORTB bit 7 / ICSP data |
| Chân 38 | MCLR/VPP — Master clear reset / programming voltage |
| Chân 39 | RA0/AN0 — PORTA bit 0 / ADC input 0 |
| Chân 40 | RA1/AN1 — PORTA bit 1 / ADC input 1 |
| Chân 41 | NC — Not connected (per datasheet) |
| Chân 42 | NC — Not connected (per datasheet) |
| Chân 43 | NC — Not connected (per datasheet) |
| Chân 44 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC16LC67T-04I/L phù hợp cho 6 Áp dụngs: Industrial Control Panels, HVAC Thermostat Controllers, Security Alarm Panels, Simple Sensor Hubs, Motor Control PWM Drivers, Low-Cost Consumer Devices.
Industrial Control Panels
The PIC16LC67T-04I/L is well suited to industrial control panels where the 8-bit RISC core drives button inputs, LED indicators, and relay outputs via its PWM and GPIO peripherals. The 4 MHz CPU clock handles scan-loop polling of 32-64 keys within milliseconds, while the integrated UART/USART connects to PLCs or HMIs for supervisory reporting. Brown-out Detect/Reset and the Watchdog Timer protect against supply dips and firmware lockups common on factory floors, and the industrial -40C to +85C temperature grade handles unheated enclosures. With 14 KB OTP, designers can ship a fully locked firmware image for high-volume panel production without field-update risk.
Được đề xuất
HVAC Thermostat Controllers
The PIC16LC67T-04I/L serves as the control brain in HVAC thermostat designs, using ADC channels to read thermistor temperature sensors and PWM outputs to drive triac-fired heater/cooler stages. Its 5 V operation matches typical thermostat power rails derived from 24 VAC transformer plus rectifier, and the integrated UART allows connection to smart-home bridges. The 14 KB OTP accommodates scheduler logic, multi-zone control, and LCD driver routines. Brown-out Reset prevents incorrect setpoint retention during brown-outs, while the WDT recovers from EMI-induced firmware stalls common near relay coils.
Được đề xuất
Security Alarm Panels
In security alarm panels, the PIC16LC67T-04I/L monitors up to 8-16 zones via GPIO and SPI-connected keypads, manages siren and dialer outputs via PWM and GPIO, and reports events via the integrated UART to a central monitoring station modem. Its Brown-out Detect/Reset ensures the panel latches a tamper event during power glitches rather than silently rebooting, and the WDT recovers from RF-induced firmware lockups. The 14 KB OTP stores zone configuration, dialer phone numbers, and event-log buffers, while the industrial temperature grade tolerates garage and basement installations.
Được đề xuất
Simple Sensor Hubs
The PIC16LC67T-04I/L is a strong fit for sensor hub nodes that aggregate temperature, humidity, and switch inputs and forward them via UART or I2C to a gateway. The 4 MHz core handles periodic ADC scans at 1-10 Hz with margin for averaging, and the 368 B RAM holds recent samples plus protocol buffers. Brown-out Reset preserves the last-known sensor state during supply glitches. The 5 V supply tolerance matches industrial 24 V-to-5 V regulator outputs, and the 44-PLCC package provides ample I/O for multi-sensor fan-in.
Được đề xuất
Motor Control PWM Drivers
The PIC16LC67T-04I/L's on-chip PWM peripheral drives small DC and stepper motors in low-power applications such as fans, valve actuators, and small pumps. The 4 MHz core and PWM resolution are sufficient for 8-10 kHz switching frequencies on brushed DC motors, while the UART allows host commands from a master controller. Brown-out Reset and WDT protect the motor driver stage from firmware stalls that could otherwise stall the motor. The 14 KB OTP accommodates simple PID or open-loop speed-control routines plus diagnostic state machines.
Được đề xuất
Low-Cost Consumer Devices
The PIC16LC67T-04I/L targets high-volume consumer products - kitchen appliances, toys, and small appliances - where its OTP memory provides the lowest per-unit cost after NRE. The integrated I2C/SPI/UART trio interfaces with character LCDs, EEPROM, and wireless modules for connected appliances. Industrial temperature grade handles garage and outdoor-adjacent installations, while Brown-out Reset protects user settings during power blips. The 44-PLCC J-Lead package is well-supported by high-speed SMT lines for consumer-electronics production volumes.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC67T-04I/L — 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 | PIC16LC67-04I/L | PIC16LC67-04/PT | PIC16LC67T-04I/PQ | PIC16F877A-I/L | PIC16LC66-04I/SP |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-PLCC (J-Lead) | 44-PLCC (J-Lead) - same | 44-TQFP - same pin count, different layout | 44-MQFP (PQ) - same pin count, different layout | 44-PLCC (J-Lead) - same | 28-SPDIP - different pin count |
| Core | 8-bit PIC RISC | 8-bit PIC RISC - same | 8-bit PIC RISC - same | 8-bit PIC RISC - same | 8-bit PIC RISC - same | 8-bit PIC RISC - same |
| Program Memory Type | OTP (14 KB) | OTP (14 KB) - same | OTP (14 KB) - same | OTP (14 KB) - same | Flash (14 KB) - reprogrammable | OTP (14 KB) - same |
| RAM Size | 368 bytes | 368 bytes - same | 368 bytes - same | 368 bytes - same | 368 bytes - same | 368 bytes - same |
| Max CPU Frequency | 4 MHz | 4 MHz - same | 4 MHz - same | 4 MHz - same | 20 MHz - faster | 4 MHz - same |
| Operating Voltage | 5 V | 5 V - same | 5 V - same | 5 V - same | 2.0-5.5 V - wider range | 5 V - same |
| Lifecycle Status | NRND | NRND | NRND | NRND | Active | NRND |
Bảo phân biệt quan trọng
- OTP-only memory lowers per-unit cost for high-volume production (vsPIC16F877A-I/L)
- 44-PLCC package enables socket-based field retrofits (vsPIC16LC67-04/PT (44-TQFP))
- Tape & Reel packaging ready for high-volume SMT lines (vsPIC16LC67-04I/L (Tray))
Ghi chú thiết kế
The PIC16LC67T-04I/L uses One-Time Programmable (OTP) memory that CANNOT be erased or rewritten. Once the bit cells are programmed, the firmware is permanently locked. Engineers should develop and debug on a flash-based sibling (PIC16F877A-I/L) and only migrate to this OTP part for the final production image after firmware is fully validated. Programming a bug into OTP requires scrapping the physical part.
The PIC16LC67T-04I/L operates from a single 5 V supply with two VDD and two VSS pins (pins 8, 29 for VDD; pins 9, 28 for VSS) that must both be connected. Decoupling: place a 100 nF ceramic capacitor within 5 mm of each VDD pin, plus a 10 uF bulk capacitor at the board supply entry. The 'LC' low-power CMOS variant draws ~2-5 mA active and <10 uA sleep, but Brown-out Reset can spike current during recovery - budget regulator headroom accordingly.
The 44-pin PLCC J-Lead package requires a socket or reflow-solderable land pattern. Use a through-hole PLCC socket (e.g., 3M 8444-21B1-RK) for prototyping to allow easy swap to flash-based PIC16F877A-I/L. For SMT production, follow IPC-7351 land pattern guidelines for PLCC-J with a 1.27 mm pitch and ensure adequate thermal relief for hand-rework. The PLCC package is NOT pin-compatible with the 44-TQFP (PT) variant - PCB layouts cannot be reused.
The configuration bits (fuses) on the PIC16LC67T-04I/L control oscillator mode, watchdog enable, brown-out voltage, code protection, and low-voltage programming. Setting the wrong configuration bit - especially code protection (CP) - can permanently lock the part before you finish programming. Always program the configuration bits LAST, after verifying the firmware image. Use the 'CP_ALL' setting only on the final production image.
Estimated: At 4 MHz active CPU and 5 V supply with all peripherals enabled, typical power dissipation is approximately 50 mW (10 mA active current). The 44-PLCC package has theta_JA of approximately 50 C/W, giving a junction temperature rise of 2.5C above ambient - well within the 85C industrial limit. However, if all PORTB pull-ups are enabled and outputs drive heavy loads, total dissipation can climb to 250-300 mW; ensure ambient temperature stays below 70C in enclosed designs.
Thông tin tuân thủ
RoHS and lead-free status not specified in the verified web data; engineers should request the RoHS-compliant ordering code (e.g., PIC16LC67T-04I/LG or similar) from Microchip if RoHS is required. AEC-Q100 not applicable - this is a general-purpose industrial MCU, not automotive-qualified.
