PIC16LC65B-04/PQ - 8-Bit 4MHz OTP MCU 7KB 33 I/O | Microchip
MPN: PIC16LC65B-04/PQ ✗ Cuối đờiPIC16LC65B-04/PQ Tóm tắt
What is an 8-bit OTP microcontroller? An 8-bit microcontroller is a small computer-on-a-chip built around an 8-bit data bus, integrating a CPU core, program memory (here, OTP - one-time-programmable EPROM), data RAM, and peripherals into a single IC. OTP memory is programmed once and cannot be erased, making it ideal for high-volume production runs where code stability is locked. Within the broader semiconductor taxonomy, this part belongs to the microcontroller (MCU) category, which sits under microcontrollers and microprocessors in the integrated circuits hierarchy.
Key features include 33 bidirectional I/O pins, an integrated analog-to-digital converter (ADC), three timer/counter modules, a USART for serial communication, and a synchronous serial port (SSP). The OTP program memory supports in-circuit serial programming (ICSP) via two pins, enabling production-line programming without removing the part. The MQFP-44 package provides ample pin count for embedded control tasks while maintaining a modest 10x10 mm footprint.
Typical applications include industrial control systems, automotive body electronics, sensor interface modules, appliance controllers, and embedded data acquisition devices. The wide 2.5V-5.5V operating range allows direct connection to a single lithium cell, three alkaline cells, or regulated 5V rails, simplifying power supply design. Three timer/counter modules plus a USART support motor control, PWM generation, and master/slave multi-drop communication links.
When designing with this device, note that OTP memory cannot be re-programmed; use the PIC16F65B or PIC16C65B flash/UV-erase equivalents for prototyping and field updates. Operating temperature is 0C to +70C (commercial grade); choose the PIC16LC65BT-04I/PQ industrial variant (-40C to +85C) for outdoor or automotive under-hood deployments.
This page synthesizes current distributor pricing, drop-in Microchip PIC16 family alternatives, and practical MQFP-44 design notes not found in the manufacturer datasheet alone, helping engineers quickly evaluate substitutes and source decisions for production runs.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC65B-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 PIC16LC65B-04/PQ (cùng hình factor và footprint) — khác nhau ở ADC, Program Memory Size, Core Architecture, Operating Temperature, Timers.
PIC16LC65BT-04/PQ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC65BT-04I/PQ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC65A-04I/PQ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC65A-04/PQ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65B-04/PQ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F884-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC65B-04/PQ Tỷ lệ tối đa & tính chất điện
| Family | PIC16CXX mid-range |
| Core | 8-bit RISC |
| Program Memory Type | OTP (One-Time Programmable EPROM) |
| Program Memory Size | 7 KB (4K x 14) |
| RAM Size | 192 bytes |
| Tần số xung maksimum | 4 MHz |
| Supply Voltage Range | 2.5 V to 5.5 V |
| Khoảng nhiệt độ hoạt động | 0 C to +70 C (commercial) |
| Number of I/O Pins | 33 |
| ADC | Integrated |
| Timers/Counters | 3 |
| Communication Peripherals | USART, SSP (Synchronous Serial Port) |
| Hộp | MQFP-44 (10x10 mm) |
| Kiểu lắp đặt | Surface Mount |
| ICSP Programming | Yes (In-Circuit Serial Programming) |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân PIC16LC65B-04/PQ
| Chân 1 | OSC1/CLKIN — Oscillator input / external clock input |
| Chân 2 | OSC2/CLKOUT — Oscillator output / clock output |
| Chân 3 | MCLR/VPP — Master clear reset / programming voltage input |
| Chân 4 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| Chân 5 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| Chân 6 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| Chân 7 | RA3/AN3/VREF — PORTA bit 3 / Analog input 3 / Voltage reference |
| Chân 8 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Chân 9 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SSP slave select |
| Chân 10 | RE0/RD/AN5 — PORTE bit 0 / Read signal / Analog input 5 |
| Chân 11 | RE1/WR/AN6 — PORTE bit 1 / Write signal / Analog input 6 |
| Chân 12 | RE2/CS/AN7 — PORTE bit 2 / Chip select / Analog input 7 |
| Chân 13 | VDD — Positive supply voltage |
| Chân 14 | VSS — Ground reference |
| Chân 15 | OSC1 — Oscillator crystal input (alternate) |
| Chân 16 | OSC2 — Oscillator crystal output (alternate) |
| Chân 17 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock |
| Chân 18 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Chân 19 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 |
| Chân 20 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 21 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Chân 22 | RC5/SDO — PORTC bit 5 / SPI data out |
| Chân 23 | RC6/TX/CK — PORTC bit 6 / USART transmit / USART clock |
| Chân 24 | RC7/RX/DT — PORTC bit 7 / USART receive / USART data |
| Chân 25 | VSS — Ground reference |
| Chân 26 | RB0/INT — PORTB bit 0 / External interrupt |
| Chân 27 | RB1 — PORTB bit 1 |
| Chân 28 | RB2 — PORTB bit 2 |
| Chân 29 | RB3/PGM — PORTB bit 3 / Low-voltage programming |
| Chân 30 | RB4 — PORTB bit 4 |
| Chân 31 | RB5 — PORTB bit 5 |
| Chân 32 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Chân 33 | RB7/PGD — PORTB bit 7 / ICSP data |
| Chân 34 | VDD — Positive supply voltage |
| Chân 35 | VSS — Ground reference |
| Chân 36 | RD0 — PORTD bit 0 |
| Chân 37 | RD1 — PORTD bit 1 |
| Chân 38 | RD2 — PORTD bit 2 |
| Chân 39 | RD3 — PORTD bit 3 |
| Chân 40 | RD4 — PORTD bit 4 |
| Chân 41 | RD5 — PORTD bit 5 |
| Chân 42 | RD6 — PORTD bit 6 |
| Chân 43 | RD7 — PORTD bit 7 |
| Chân 44 | VSS — Ground reference |
Ứng dụng tiêu biểu
PIC16LC65B-04/PQ phù hợp cho 6 Áp dụngs: Industrial Control Systems, Appliance Controllers, Sensor Interface Modules, Automotive Body Electronics, Embedded Data Acquisition, Consumer Electronics Controllers.
Industrial Control Systems
The PIC16LC65B-04/PQ fits industrial control systems through its 33 digital I/O pins, three 16-bit timer/counter modules capable of PWM generation, and integrated ADC for sensor readout. The 2.5V-5.5V supply range supports both 3.3V and 5V PLC backplanes. With 7KB OTP memory, the part locks firmware at production, preventing costly field tampering. The 4MHz clock is sufficient for relay sequencing, conveyor control, and machine-status monitoring loops. Designers should allocate adequate decoupling (100nF + 10uF) near VDD pins, and use the USART for Modbus RTU communication to a host controller.
Được đề xuất
Appliance Controllers
The PIC16LC65B-04/PQ serves washing machines, microwave ovens, and HVAC controllers where its 33 I/O pins drive seven-segment displays, keypads, and triac-control opto-isolators. The USART links to inverter boards or wireless modules for smart-appliance connectivity. OTP memory at 7KB fits mid-complexity user-interface firmware including menu navigation, timer logic, and fault detection. The 0C to +70C commercial temperature range covers indoor appliance environments; for outdoor units, choose the PIC16LC65BT-04I/PQ industrial variant. Power consumption under the LC process is approximately 2 mA active at 4MHz, suitable for always-on control boards.
Được đề xuất
Sensor Interface Modules
The PIC16LC65B-04/PQ handles multi-sensor data acquisition with its integrated ADC, supporting temperature, pressure, and humidity transducers in process-control cabinets. The synchronous serial port (SSP) interfaces SPI sensors and EEPROM data loggers, while the USART streams readings to a SCADA host at 9600-115200 baud. Low-power LC operation at 2.5V enables battery-backed sensor nodes that draw less than 5 mA active. With 192 bytes RAM, the part buffers several sample channels before transmission. For high-accuracy measurement, run the ADC at 4MHz ECLK with appropriate acquisition time and use averaging filters in firmware.
Được đề xuất
Automotive Body Electronics
Although the PIC16LC65B-04/PQ is commercial grade, it serves non-critical body-electronics modules such as interior lighting, seat-position memory, and door-lock controllers where the 0C to +70C range suffices. The 33 I/O drive LED arrays, motor bridges, and switch matrices directly through appropriate driver stages. The USART links to body control modules for diagnostic communication; the ADC reads potentiometer wiper positions for seat adjustment. For under-hood or outdoor automotive use, the PIC16LC65BT-04I/PQ industrial variant extends temperature coverage to -40C to +85C, meeting most passenger-compartment requirements.
Được đề xuất
Embedded Data Acquisition
The PIC16LC65B-04/PQ performs portable data logging in field instruments where its 2.5V minimum supply allows three-alkaline-cell operation for hundreds of hours. The 7KB OTP holds compact firmware for sampling, time-stamping, and storing readings to external EEPROM via SSP. With 192 bytes RAM, the device buffers sample bursts before committing to non-volatile storage. The 4MHz clock runs the ADC conversion and SPI transfer with margin. Engineers should add a hardware watchdog and brown-out reset to survive battery end-of-life; an external 32.768 kHz crystal can drive Timer1 for real-time-clock accuracy when wall power is absent.
Được đề xuất
Consumer Electronics Controllers
The PIC16LC65B-04/PQ powers remote controls, toys, gaming peripherals, and small home appliances where cost per unit matters and OTP memory eliminates the need for code protection. Its 33 I/O drive IR LEDs, character LCDs, keypads, and audio feedback buzzers. The synchronous serial port connects to character LCD modules and SPI peripherals. At 4MHz clock, the device generates accurate IR carrier frequencies (38-56 kHz) for remote protocols. Designers should budget code size carefully since OTP cannot be reprogrammed; reserve the final 256 words for bootloader hooks if future migration to flash variants is anticipated. The 44-MQFP package suits compact handheld enclosures.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC65B-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 | PIC16LC65BT-04/PQ | PIC16LC65BT-04I/PQ | PIC16LC65A-04I/PQ | PIC16C65B-04/PQ | PIC16F884-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | MQFP-44 (10x10 mm) | MQFP-44 (10x10 mm) - same | MQFP-44 (10x10 mm) - same | MQFP-44 (10x10 mm) - same | MQFP-44 (10x10 mm) - same | MQFP-44 (10x10 mm) - same |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB Flash |
| Max Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz (F variant) |
| Supply Voltage Range | 2.5 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 | 4.5 V to 5.5 V | 2.0 V to 5.5 V |
| Operating Temperature | 0 C to +70 C | 0 C to +70 C | -40 C to +85 C | -40 C to +85 C | 0 C to +70 C | -40 C to +85 C |
| RAM Size | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 256 bytes (F variant) |
| Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | Flash |
Bảo phân biệt quan trọng
- Low-power LC process variant supports 2.5V minimum supply (vsPIC16C65B-04/PQ)
- 33 I/O pins and integrated ADC in 44-MQFP (vsPIC16LC63A-04I/SO)
- Same MQFP-44 footprint as flash-based PIC16F884 (vsPIC16F884-I/PT)
Ghi chú thiết kế
The PIC16LC65B-04/PQ draws approximately 2 mA active at 4MHz and 5V, and less than 1 uA in sleep mode. Place a 100nF ceramic decoupling capacitor as close as possible to each VDD pin (pins 13, 34), with a bulk 10uF tantalum or aluminum electrolytic on the supply rail. For battery-powered designs, use the sleep mode aggressively and wake via watchdog timer or external interrupt to extend battery life into the multi-year range.
The MQFP-44 package has 0.8 mm lead pitch and 10x10 mm body size. Route signal traces on 0.2 mm (8 mil) width or finer, and provide a continuous ground plane beneath the IC to minimize EMI. Keep the MCLR/VPP trace short and isolated from switching signals; add a 10 kohm pull-up to VDD and a 100nF capacitor to ground for clean reset behavior. For ICSP programming, dedicate the RB6/PGC and RB7/PGD pins and route them to an in-circuit programming header.
Do not use OTP (one-time-programmable) memory for prototyping - once programmed, the device cannot be erased or reprogrammed. Use a flash-based PIC16F65B or PIC16F884 equivalent for development, then port the verified firmware to the OTP part for production. Also verify that the supply voltage does not exceed 5.5V absolute maximum, especially during ICSP programming when VPP can reach 13V on the MCLR pin.
Thông tin tuân thủ
RoHS compliant per distributor listings. Commercial temperature grade only - not AEC-Q100 qualified for automotive under-hood use.
