PIC16LC662-04I/P - 8-bit 4MHz 7KB OTP MCU DIP-40 | Microchip
MPN: PIC16LC662-04I/P ✗ Cuối đờiPIC16LC662-04I/P Tóm tắt
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, working RAM, non-volatile data EEPROM, and programmable peripherals. The PIC16C/LC66x family occupies the mid-range tier of Microchip's 8-bit portfolio, positioned between the baseline PIC10/12/16 families and the high-pin-count PIC17/PIC18 series. Within the broader power-management and embedded hierarchy, an 8-bit MCU like the PIC16LC662 serves as the system supervisor: it sequences power rails, polls sensors through its ADC, drives actuators through PWM, and runs the application firmware. The 'LC' suffix indicates a low-voltage CMOS variant optimized for battery-powered systems, while 'C' indicates the OTP/EPROM program-memory technology.
Key features of the PIC16LC662 include a 10-bit multi-channel ADC (8 channels typical for this family), a USART/SCI serial port for asynchronous or synchronous communication, an SSP/SPI/I2C-compatible synchronous serial port, three hardware timers (one 8-bit Timer0 with prescaler, one 16-bit Timer1 with prescaler, one 8-bit Timer2 with prescaler), a watchdog timer with its own on-chip RC oscillator, and a capture/compare/PWM module. The -04 speed grade delivers 4 MHz / 250 ns instruction cycle. Brown-out reset and power-on reset are integrated. The windowed CERDIP package exposes the die for UV erasure, enabling prototype development cycles that require code revision.
The architecture uses a 14-bit program word, an 8-bit data path, and a 35-instruction set with single-cycle execution. Memory is mapped as separate program and data spaces (Harvard), with 192 bytes of RAM and 128 bytes of EEPROM. The 33 I/O pins are organized into 5 ports (PORTA-PORTE) with individual direction control. Peripheral features include a parallel slave port for external bus expansion, two analog comparators, and a reference voltage module for the ADC.
Typical applications for the PIC16LC662 include industrial control, automotive body and chassis subsystems, instrumentation, motor control, sensor interfacing, and embedded data acquisition. Designers choose this family for deterministic real-time behavior, code-density advantage of 14-bit instructions, and the broad ecosystem of MPLAB development tools. The windowed CERDIP form factor is most common in through-hole legacy designs and in development/engineering builds that require frequent code iteration.
When designing with the PIC16LC662, observe the maximum clock frequency derating over temperature and voltage: at 5 V the device supports 20 MHz; at 3.3 V operation the maximum is typically 10 MHz; at 2.5 V the maximum is 4 MHz, which corresponds to the -04 speed grade. Place decoupling capacitors within 5 mm of the VDD/VSS pins and provide a low-impedance analog AVdd/AVss pair for the ADC. Designers migrating to newer revisions should consider the PIC16F877 or PIC18F family for in-system programmability.
This page synthesizes distributor pricing, drop-in alternative MPNs, design notes, and selection guidance not consolidated on any single manufacturer or distributor page.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC662-04I/P — 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 PIC16LC662-04I/P (cùng hình factor và footprint) — khác nhau ở Package, Timers, Core Architecture, Program Memory Size, Mounting Type.
PIC16F877-04I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F887-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F74-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC622-04I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC65A-04I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC621A-04I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC662-04I/P Tỷ lệ tối đa & tính chất điện
| Product Type | 8-bit Microcontroller (MCU) |
| Core Architecture | PIC16 mid-range (Harvard, 14-bit instruction word) |
| Program Memory Size | 7 KB (4K x 14) OTP/EPROM |
| RAM Size | 192 bytes |
| EEPROM Size | 128 bytes |
| Maximum Clock Speed | 4 MHz (-04 speed grade) |
| Supply Voltage Range | 2.5 V to 5.5 V |
| I/O Pins | 33 |
| ADC | 10-bit, multi-channel (8 channels typical) |
| Timers | Timer0 (8-bit), Timer1 (16-bit), Timer2 (8-bit) |
| Serial Interfaces | USART/SCI, SSP/SPI, I2C-compatible |
| PWM Modules | 1 CCP module (Capture/Compare/PWM) |
| Watchdog Timer | Yes, with dedicated on-chip RC oscillator |
| Khoảng nhiệt độ hoạt động | -40C to +85C (Industrial grade, 'I' suffix) |
| Hộp | 40-pin CERDIP-0.600 (windowed, UV-erasable) |
| Kiểu lắp đặt | Through-Hole (DIP) |
| ROM Type | UVPROM / OTP (windowed for erasure) |
| Instruction Set | 35 instructions, single-cycle execution |
Cấu hình chân PIC16LC662-04I/P
| 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 Vref+ |
| 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 / parallel slave port read / analog input 5 |
| Chân 9 | RE1/WR/AN6 — PORTE bit 1 / parallel slave port write / analog input 6 |
| Chân 10 | RE2/CS/AN7 — PORTE bit 2 / parallel slave port chip select / analog input 7 |
| Chân 11 | VDD — Positive supply voltage (digital) |
| Chân 12 | VSS — Ground (digital) |
| 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 / USART clock |
| Chân 26 | RC7/RX/DT — PORTC bit 7 / USART receive / USART 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 (digital) |
| Chân 32 | VDD — Positive supply voltage (digital) |
| Chân 33 | RB0/INT — PORTB bit 0 / external interrupt |
| Chân 34 | RB1 — PORTB bit 1 |
| Chân 35 | RB2 — PORTB bit 2 |
| Chân 36 | RB3/PGM — PORTB bit 3 / low-voltage programming |
| 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 |
Ứng dụng tiêu biểu
PIC16LC662-04I/P phù hợp cho 6 Áp dụngs: Industrial Process Control, Automotive Body Electronics, Motor Control and Drives, Instrumentation and Data Acquisition, Embedded Sensor Interfacing, Consumer Appliance Control.
Industrial Process Control
The PIC16LC662-04I/P fits industrial process control where deterministic 8-bit performance, 4 MHz operation, and 33 I/O lines drive sensor multiplexing, actuator PWM, and Modbus-class serial links. Its 10-bit ADC with up to 8 channels reads 4-20 mA loop transmitters via current-sense resistors, while the CCP module generates isolated PWM for proportional valve control. The wide 2.5 V to 5.5 V supply lets the MCU run directly from a 24 V industrial bus after a small LDO, simplifying DIN-rail PLC designs. Brown-out and watchdog timers protect against factory supply transients; the windowed CERDIP package supports long-term aerospace and defense process-control programs where OTP UV-erase is preferred for security.
Được đề xuất
Automotive Body Electronics
In automotive body and chassis subsystems, the PIC16LC662-04I/P's industrial -40C to +85C temperature range and OTP code security make it a candidate for legacy ECU modules including body controllers, lighting drivers, and HVAC actuators. Its USART links to LIN transceivers, while the 8-channel 10-bit ADC reads thermistor, potentiometer, and switch-position sensors. The CCP/PWM module drives MOSFET gates for seat-heater, mirror-fold, or wiper control. Note that AEC-Q100 Grade 0 parts are required for under-hood applications; this industrial-grade part is suitable only for cabin modules. For new automotive designs, Microchip recommends AEC-Q100-qualified PIC16F variants from the same family.
Được đề xuất
Motor Control and Drives
The PIC16LC662-04I/P supports small brushed DC and stepper motor control through its CCP/PWM module, which generates complementary or single-ended PWM at up to 10 kHz with 10-bit resolution. Three timers (8-bit Timer0, 16-bit Timer1, 8-bit Timer2) handle commutation, RPM feedback via capture, and fault-watchdog functions. The 33 I/O lines route H-bridge gate drivers, current-sense amplifiers, Hall-effect sensors, and tachometer inputs. While the 4 MHz maximum clock limits sophisticated FOC algorithms, the device is well-suited to trapezoidal commutation for pumps, fans, and small appliances. Designers using the OTP windowed CERDIP variant typically embed this MCU in safety-certified appliances where code immutability is required.
Được đề xuất
Instrumentation and Data Acquisition
For instrumentation and bench-top data acquisition, the PIC16LC662-04I/P integrates an 8-channel 10-bit ADC with sample-and-hold, plus USART for streaming readings to a host PC or LCD display. The 14-bit instruction word delivers compact state-machine code for sensor linearization and digital filtering. The internal EEPROM (128 bytes) stores calibration constants, while the parallel slave port allows direct interface to external SRAM or display controllers. Power consumption at 4 MHz and 3.3 V is below 5 mA typical, allowing battery-powered portable instruments. The 40-pin DIP through-hole package is convenient for breadboard prototyping and one-off engineering builds.
Được đề xuất
Embedded Sensor Interfacing
The PIC16LC662-04I/P serves as a sensor-hub MCU aggregating inputs from thermistors, photodiodes, RTDs, and digital sensors over SPI/I2C. Its SSP peripheral operates in either SPI master/slave mode or I2C master/slave mode, allowing direct connection to MEMS accelerometers, pressure sensors, and EEPROMs without external glue logic. The 33 I/O pins accommodate multiple sensor buses simultaneously. The interrupt-driven architecture and 35-instruction RISC core produce deterministic response within 250 ns at the -04 speed grade. Industrial temperature range and OTP code security suit medical and metering subsystems where firmware integrity is auditable.
Được đề xuất
Consumer Appliance Control
In consumer appliances such as washing machines, dishwashers, microwave ovens, and small kitchen equipment, the PIC16LC662-04I/P provides the core MCU for user-interface handling, motor timing, and safety interlocks. Its CCP/PWM drives buzzer tones, LED indicator dimming, and triac phase-control for heater elements; the ADC reads temperature probes and water-level sensors. The windowed CERDIP package lets engineering teams iterate firmware via UV erasure during development, then lock the production OTP code for cost-down. With industrial -40C to +85C operation and integrated brown-out reset, this MCU is robust against mains-transient-induced resets common in white-goods environments.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC662-04I/P — 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 | PIC16F877-04I/P | PIC16F887-I/P | PIC16F74-I/P | PIC16LC622-04I/P | PIC16LC65A-04I/P | PIC16LC621A-04I/P |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | CERDIP-40 (windowed, 0.600 in) | PDIP-40 (same) | PDIP-40 (same) | PDIP-40 (same) | PDIP-40 (same family) | PDIP-40 (same) | PDIP-40 (same) |
| Program Memory Type | OTP/EPROM (7 KB) | Flash (14 KB) | Flash (14 KB) | Flash (7 KB) | OTP (3.5 KB) | OTP (7 KB) | OTP (1.75 KB) |
| Max Clock Speed | 4 MHz (-04 grade) | 20 MHz | 20 MHz | 20 MHz | 4 MHz | 20 MHz | 4 MHz |
| I/O Pins | 33 | 33 | 36 | 33 | 13 | 33 | 13 |
| ADC Channels | 8 x 10-bit | 8 x 10-bit | 14 x 10-bit | 8 x 10-bit | lower channel count | 8 x 10-bit | no ADC |
| RAM Size | 192 bytes | 368 bytes | 368 bytes | 192 bytes | 128 bytes | 192 bytes | 80 bytes |
| Lifecycle Status | Obsolete | Active | Active | Active | Obsolete | Obsolete | Obsolete |
| Operating Voltage | 2.5 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
Bảo phân biệt quan trọng
- Windowed CERDIP package supports UV-erase development (vsPIC16F877-04I/P)
- Industrial-grade operating temperature range (vsPIC16LC621A-04I/P)
- Higher I/O count and ADC channel count (vsPIC16LC622-04I/P)
Ghi chú thiết kế
Estimated: at 4 MHz clock and 5 V supply, the PIC16LC662-04I/P core draws approximately 2-5 mA typical and up to 10 mA with all peripherals active. Decouple each VDD/VSS pin pair with a 100 nF ceramic capacitor placed within 5 mm of the package, and add a single 10 uF tantalum or aluminum polymer bulk capacitor on the board's main supply rail. For AVdd/AVss, use a 10 uH ferrite bead between digital VDD and analog AVdd, plus a 100 nF + 10 uF decoupling pair to suppress ADC switching noise.
The 40-pin CERDIP package is a through-hole device with 2.54 mm (0.100 in) pin pitch. Provide a clearance of at least 1 mm around the ceramic body and route analog traces away from the OSC1/OSC2 crystal traces. The windowed CERDIP variant requires a UV-transparent lid; place the part so that the erase window is accessible and not covered by a heatsink or shield. Ground plane continuity beneath the device improves EMI performance but should not extend under the crystal traces.
Do not assume that any 40-pin DIP PIC16 pinout is identical to the LC662's pinout - the LC662 family pinout must be verified against the specific datasheet because some PIC16 variants differ in PORTE assignment, parallel slave port presence, and CCP2 location. Also note that the OTP/EPROM device must be erased with UV light (typically 20-30 minutes at 12,000 uW/cm2) before reprogramming; do not treat this device like a flash MCU. Brown-out reset (BOR) must be enabled in the configuration word to prevent code runaway during supply transients.
The PIC16LC662-04I/P's parallel slave port (PSP) on PORTD can conflict with the digital I/O on PORTD if both are enabled. Only enable PSP mode in software when external bus access is required; otherwise leave TRISD configured for digital I/O. For ADC accuracy, the source impedance driving analog inputs must be below 10 kOhm to avoid ADC conversion errors caused by the sample-and-hold switch. Add a 100 nF bypass capacitor at each analog input pin if the source impedance is higher than 10 kOhm.
Thông tin tuân thủ
The PIC16LC662-04I/P is an obsolete Microchip part; compliance data not in verified sources. Industrial-grade temperature only; NOT AEC-Q100 qualified for automotive under-hood use.
