PIC16LC662-04/PQ - 4MHz 8-bit OTP MCU, 7KB, 33 I/O | Microchip
MPN: PIC16LC662-04/PQ ✗ Cuối đờiPIC16LC662-04/PQ Tóm tắt
Background: An 8-bit microcontroller (MCU) is a single-chip computer integrating a CPU core, program memory (ROM/OTP/Flash), working RAM, and peripheral interfaces. The PIC16C/LC families use a RISC-based Harvard architecture with a 14-bit wide instruction word, optimized for deterministic timing and small code footprint. The 'LC' prefix designates a low-voltage, low-power variant that supports operation down to ~3V from a regulated supply, while the 'C' suffix indicates the OTP program-memory technology.
Key features include 7KB (4K x 14) OTP program memory, 176 bytes of general-purpose SRAM, 33 bidirectional I/O pins, an integrated watchdog timer, an 8-bit timer/counter with prescaler, capture/compare/PWM modules, and multiple interrupt sources. The 44-MQFP PQ package gives a 0.8 mm terminal pitch and is suited for surface-mount assembly with adequate thermal dissipation for industrial ambient temperatures.
Typical applications include industrial control panels, sensor signal conditioning front-ends, low-power instrumentation, automotive body electronics (non-safety), white-goods controllers, and consumer appliance human-machine interfaces. The 33 I/O count supports keypad scanning, multi-LED driving, and direct interfacing to small alphanumeric LCD modules.
When designing with this part, note that OTP memory cannot be re-programmed in-circuit - prototypes should be evaluated on a UV-erasable equivalent (PIC16LC662-04/PQ windowed version) or an EPROM emulator before committing code. The 'LC' low-voltage variant also requires a clean 3-6V regulated supply; ripple above 50 mV can corrupt ADC readings on shared pins. Use the Microchip MPASM/MPLAB IDE toolchain with PIC16C66x device support for development.
This page synthesizes distributor pricing, pinout, drop-in alternatives, and practical design notes that supplement the manufacturer datasheet for engineers evaluating end-of-life or long-life-cycle replacements.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC662-04/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 PIC16LC662-04/PQ (cùng hình factor và footprint) — khác nhau ở ADC, Program Memory Size, Package, Timers, Watchdog Timer.
PIC16LC66-04I/SP
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LC65B-04/PQ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LC65A-04/PQ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LC65A-04I/PQ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LC65BT-04I/PQ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LC662-04I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC662-04/PQ Tỷ lệ tối đa & tính chất điện
| Family | PIC® 16C |
| Series | PIC16LC662 |
| Core Architecture | 8-bit PIC RISC Harvard |
| Program Memory Type | OTP (One-Time-Programmable) |
| Program Memory Size | 7 KB (4K x 14-bit) |
| RAM Size | 176 bytes |
| Number of I/O Pins | 33 |
| Tần số xung maksimum | 4 MHz |
| Package Type | 44-MQFP (PQ) |
| Kiểu lắp đặt | Surface Mount |
| Terminal Pitch | 0.8 mm |
| Technology | CMOS, low-power ('LC') |
| Watchdog Timer | Yes (integrated) |
| Timers | 8-bit Timer/Counter with prescaler |
Cấu hình chân PIC16LC662-04/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 / SPI 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 | VSS — Ground reference |
| Chân 12 | VDD — Positive supply voltage |
| Chân 13 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Chân 14 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| Chân 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 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 transmit / clock |
| Chân 26 | RC7/RX/DT — PORTC bit 7 / USART receive / 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 | VDD — Positive supply voltage |
| Chân 32 | VSS — Ground reference |
| Chân 33 | RB0/INT — PORTB bit 0 / External interrupt input |
| 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 (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
PIC16LC662-04/PQ phù hợp cho 6 Áp dụngs: Industrial Control Panel Interface, Sensor Signal Conditioning Front-End, White Goods / Home Appliance Controller, Automotive Body Electronics (Non-Safety), Consumer Appliance HMI Controller, Low-Power Instrumentation Module.
Industrial Control Panel Interface
The PIC16LC662-04/PQ fits industrial control panels thanks to its 33 bidirectional I/O pins, integrated watchdog timer, and CMOS low-power operation. The 4 MHz clock rate is sufficient for keypad scanning (3x4 matrix), 7-segment LED multiplexing, and relay control loops with deterministic timing. Designers can wire PORTA and PORTB directly to optocouplers driving 24V industrial loads, while PORTC handles a character LCD in 4-bit mode. Compared to flash-memory successors, the OTP program memory locks firmware permanently, preventing field tampering and IP extraction in harsh factory-floor environments.
Được đề xuất
Sensor Signal Conditioning Front-End
In sensor front-end designs, the PIC16LC662-04/PQ can digitize analog signals through its ADC channels and pre-process data before forwarding to a host. The 'LC' low-voltage core operates from ~3V rails, ideal for sensor modules powered by 3.3V LDO regulators. The 176 bytes of RAM support moving-average filters and simple peak-detection algorithms for vibration or temperature sensors. Integrated CCP modules generate precise PWM excitation signals for sensor bridge circuits. The 4 MHz instruction rate yields ~1 MHz effective throughput, suitable for sub-kHz sensor sampling rates.
Được đề xuất
White Goods / Home Appliance Controller
The PIC16LC662-04/PQ is well-suited for washing-machine, dishwasher, and oven controllers because the OTP program memory locks the firmware against unauthorized modification after certification. The 33 I/O count directly drives triac opto-isolators for motor direction control, solenoid valves, and heater relays. The integrated watchdog timer recovers the MCU from firmware lock-ups triggered by EMI from inductive loads. The CMOS low-power design maintains standby current under 1 mA for energy-star compliant appliances. The 44-MQFP footprint fits comfortably on appliance mainboards with adequate creepage distances for line-voltage safety.
Được đề xuất
Automotive Body Electronics (Non-Safety)
For non-safety automotive body modules such as interior lighting, seat-position memory, and HVAC flap control, the PIC16LC662-04/PQ provides sufficient processing for soft-start algorithms and LIN-slave node emulation using software bit-banging. The 33 I/O pins drive multiple LEDs, switches, and small DC motor bridges. While this part lacks AEC-Q100 automotive qualification, it is used in body modules where automotive-grade certification is not mandatory. Designers should pair it with external CAN/LIN transceivers for in-vehicle networking. The 44-MQFP PQ package withstands typical automotive underhood temperature profiles when conformal-coated.
Được đề xuất
Consumer Appliance HMI Controller
In consumer HMI controllers for coffee makers, rice cookers, and air purifiers, the PIC16LC662-04/PQ drives 7-segment displays, capacitive touch buttons, and small TFT panels through its 33 I/O. The OTP architecture ensures final firmware matches the certified version, blocking counterfeit reflash attempts. The 4 MHz instruction rate runs FSM-based menu navigation without perceivable lag. Integrated PWM outputs drive speaker buzzers for audible feedback. Low-voltage CMOS operation allows direct 3.3V battery backup during mains loss, preserving clock and user settings.
Được đề xuất
Low-Power Instrumentation Module
Battery-powered instrumentation modules benefit from the PIC16LC662-04/PQ 'LC' low-power CMOS design, which minimizes quiescent current for multi-year battery life. The MCU wakes from sleep on interrupt, performs ADC conversion of sensor data, transmits via UART, and returns to sleep - all within a 4 MHz instruction cycle. The 176 bytes of RAM buffer measurement packets before bulk transmission. The watchdog timer provides fail-safe recovery if firmware hangs during long unattended deployments. The 44-MQFP footprint is appropriate for hand-held instrument enclosures with adequate PCB area for the larger package.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC662-04/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 | PIC16LC66-04I/SP | PIC16LC65B-04/PQ | PIC16LC65A-04/PQ | PIC16LC65A-04I/PQ | PIC16LC65BT-04I/PQ | PIC16LC662-04I/P |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-MQFP (PQ) | 44-MQFP (PQ) - same | 44-MQFP (PQ) - same | 44-MQFP (PQ) - same | 44-MQFP (PQ) - same | 44-MQFP (PQ) - same | 44-MQFP (PQ) - same |
| Core Architecture | 8-bit PIC RISC | 8-bit PIC RISC | 8-bit PIC RISC | 8-bit PIC RISC | 8-bit PIC RISC | 8-bit PIC RISC | 8-bit PIC RISC |
| Program Memory Type | OTP | OTP | OTP | OTP | OTP | OTP | OTP |
| Program Memory Size | 7 KB | 7 KB | 7 KB | 7 KB | 7 KB | 7 KB | 7 KB |
| RAM Size | 176 bytes | 176 bytes | 176 bytes | 176 bytes | 176 bytes | 176 bytes | 176 bytes |
| Maximum Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Number of I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 | 33 |
| Temperature Grade | Commercial (standard) | Industrial | Commercial | Commercial | Industrial | Industrial | Industrial |
Bảo phân biệt quan trọng
- Identical 7KB OTP memory and 33 I/O at lower cost (vsPIC16LC65A-04/PQ)
- Industrial temperature grade alternative (vsPIC16LC65A-04I/PQ)
- Tap-and-reel packaging for high-volume assembly (vsPIC16LC65BT-04I/PQ)
Ghi chú thiết kế
OTP program memory cannot be re-programmed in-circuit; engineering prototypes should use the UV-erasable PIC16LC66x windowed variant (CERQUAD package) for iterative development before committing code to the OTP MQFP production part. Failing to validate firmware on a windowed device first can result in field bricking if bugs are found after the production run is started.
The 'LC' low-voltage variant requires a clean regulated supply between ~3V and 6V; ripple above 50 mV can corrupt ADC readings on shared analog pins. Place a 100 nF ceramic decoupling capacitor as close as possible to each VDD pin (pins 12 and 31), and add a bulk 10 uF tantalum or aluminum polymer capacitor near the MCU power pins. Avoid switching the MCU between low-power sleep and full operation without verifying the brown-out reset trip voltage matches your supply rail.
The 44-MQFP PQ package has a 0.8 mm lead pitch and gull-wing leads that require careful PCB land-pattern design. Use NSMD (non-solder-mask-defined) pads with a 1:1 pad-to-lead ratio and a 0.2 mm solder-mask expansion. Route power traces on inner layers with at least 0.5 oz copper weight to handle peak transient currents during I/O switching. Place the external crystal or resonator within 5 mm of the OSC1/OSC2 pins and guard it with a ground ring to minimize EMI coupling.
Thông tin tuân thủ
RoHS and halogen_free status not explicitly confirmed in verified distributor data; the PQ MQFP package historically used SnPb lead finish. Not AEC-Q100 qualified - not suitable for automotive safety-critical applications. Conflict-minerals compliance per Microchip general policy.
