PIC16LC662-04/PQ - 4MHz 8-bit OTP MCU, 7KB, 33 I/O | Microchip
N.º da peça: PIC16LC662-04/PQ ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $6.9 | $6,90 |
| 10 | $6.25 | $62,50 |
| 100 | $5.5 | $550,00 |
| 500 | $4.85 | $2.425,00 |
| 1.000 | $4.2 | $4.200,00 |
PIC16LC662-04/PQ Visão geral
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.
Alternativas drop-in para PIC16LC662-04/PQ — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC16LC662-04/PQ (mesmo formato e footprint) — diferindo em ADC, Program Memory Size, Package, Timers, Watchdog Timer.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16LC66-04I/SP
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$3.65 / unidade
Ver ficha técnica →PIC16LC65B-04/PQ
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$2.5 / unidade
Ver ficha técnica →PIC16LC65A-04/PQ
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$6.5 / unidade
Ver ficha técnica →PIC16LC65A-04I/PQ
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$5.3 / unidade
Ver ficha técnica →PIC16LC65BT-04I/PQ
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$5.45 / unidade
Ver ficha técnica →PIC16LC662-04I/P
✅ Drop-In✓ Em estoque
$5.75 / unidade
Ver ficha técnica →PIC16LC662-04/PQ Classificações máximas e características elétricas
| 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 |
| Frequência máxima de clock | 4 MHz |
| Package Type | 44-MQFP (PQ) |
| Tipo de montagem | Surface Mount |
| Terminal Pitch | 0.8 mm |
| Technology | CMOS, low-power ('LC') |
| Watchdog Timer | Yes (integrated) |
| Timers | 8-bit Timer/Counter with prescaler |
Configuração de pinos do PIC16LC662-04/PQ
| Pino 1 | MCLR#/VPP — Master Clear (Reset) input / Programming voltage |
| Pino 2 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| Pino 3 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| Pino 4 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| Pino 5 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / ADC reference + |
| Pino 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pino 7 | RA5/AN4/SS# — PORTA bit 5 / Analog input 4 / SPI slave select |
| Pino 8 | RE0/RD#/AN5 — PORTE bit 0 / Read control / Analog input 5 |
| Pino 9 | RE1/WR#/AN6 — PORTE bit 1 / Write control / Analog input 6 |
| Pino 10 | RE2/CS#/AN7 — PORTE bit 2 / Chip select / Analog input 7 |
| Pino 11 | VSS — Ground reference |
| Pino 12 | VDD — Positive supply voltage |
| Pino 13 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Pino 14 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| Pino 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Pino 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Pino 17 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 |
| Pino 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pino 19 | RD0/PSP0 — PORTD bit 0 / Parallel Slave Port bit 0 |
| Pino 20 | RD1/PSP1 — PORTD bit 1 / Parallel Slave Port bit 1 |
| Pino 21 | RD2/PSP2 — PORTD bit 2 / Parallel Slave Port bit 2 |
| Pino 22 | RD3/PSP3 — PORTD bit 3 / Parallel Slave Port bit 3 |
| Pino 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pino 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pino 25 | RC6/TX/CK — PORTC bit 6 / USART transmit / clock |
| Pino 26 | RC7/RX/DT — PORTC bit 7 / USART receive / data |
| Pino 27 | RD4/PSP4 — PORTD bit 4 / Parallel Slave Port bit 4 |
| Pino 28 | RD5/PSP5 — PORTD bit 5 / Parallel Slave Port bit 5 |
| Pino 29 | RD6/PSP6 — PORTD bit 6 / Parallel Slave Port bit 6 |
| Pino 30 | RD7/PSP7 — PORTD bit 7 / Parallel Slave Port bit 7 |
| Pino 31 | VDD — Positive supply voltage |
| Pino 32 | VSS — Ground reference |
| Pino 33 | RB0/INT — PORTB bit 0 / External interrupt input |
| Pino 34 | RB1 — PORTB bit 1 |
| Pino 35 | RB2 — PORTB bit 2 |
| Pino 36 | RB3 — PORTB bit 3 |
| Pino 37 | RB4 — PORTB bit 4 |
| Pino 38 | RB5 — PORTB bit 5 |
| Pino 39 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pino 40 | RB7/PGD — PORTB bit 7 / ICSP data |
| Pino 41 | NC — Not connected (per datasheet) |
| Pino 42 | NC — Not connected (per datasheet) |
| Pino 43 | NC — Not connected (per datasheet) |
| Pino 44 | NC — Not connected (per datasheet) |
Aplicações típicas
PIC16LC662-04/PQ é adequado para 6 aplicaçãos: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16LC662-04/PQ — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 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 |
Principais diferenciais
- Identical 7KB OTP memory and 33 I/O at lower cost (vs PIC16LC65A-04/PQ)
- Industrial temperature grade alternative (vs PIC16LC65A-04I/PQ)
- Tap-and-reel packaging for high-volume assembly (vs PIC16LC65BT-04I/PQ)
Notas de projeto
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.
Informações de conformidade
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.
