PIC16LC65B-04/PT - 8-Bit 4MHz MCU 7KB OTP 44-TQFP | Microchip
MPN: PIC16LC65B-04/PT ✓ Hoạt độngPIC16LC65B-04/PT Tóm tắt
What is an 8-bit microcontroller? An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit data path, integrating CPU core, non-volatile program memory, RAM, and peripheral set into one package. Microcontrollers sit within the broader semiconductor hierarchy as integrated circuits > microcontrollers > embedded controllers. PIC16 mid-range parts are widely used for cost-sensitive embedded control because they offer deterministic instruction execution (most instructions complete in one cycle except branches), a small footprint, and mature toolchain support from MPLAB IDE and XC8 compiler.
Key features of the PIC16LC65B-04/PT include its 35 single-word instruction set, all single-cycle except program branches (2 cycles), and a separate programmable 8-bit prescaler for Timer0. The 44-pin TQFP package exposes 33 I/O pins distributed across PORTB, PORTC, and PORTD, with several pins multiplexed to ADC and serial-peripheral functions. The low-power "LC" silicon supports industrial-temperature operation, and the 4 MHz speed grade targets timing-sensitive control loops in motor, power-conversion and human-interface subsystems.
Architecturally, the PIC16LC65B uses a Harvard RISC core with separate program and data buses, allowing instruction and operand access in a single clock cycle. The 14-bit instruction word enables single-cycle arithmetic, logic, and bit-manipulation operations, while the 8-bit data path keeps register and ALU complexity low for predictable interrupt latency. The on-chip ADC uses a successive-approximation register and is suitable for slow-changing analog signals such as temperature, voltage, or potentiometer feedback.
Typical applications for this PIC16LC65B-04/PT include industrial control panels, appliance controllers, low-end instrumentation, sensor front-ends, and small motor-control boards. The combination of 33 I/O, an 8-bit ADC, PWM, UART and I2C/SPI gives the designer enough peripheral flexibility to replace several discrete components. The wide 2.5V–5.5V supply range also lets the same firmware target both 3.3V and 5V rails.
Design consideration: OTP (One-Time Programmable) memory cannot be erased after programming, so for development and firmware iteration choose a windowed ceramic (JW) or Flash equivalent from the same family such as PIC16F877 or PIC16F887. Always place a 0.1 µF decoupling capacitor as close as possible to VDD/VSS and follow Microchip AN588 for oscillator-layout best practice.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found on a single manufacturer page.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC65B-04/PT — 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/PT (cùng hình factor và footprint) — khác nhau ở Supply Voltage Range, Program Memory Type, Program Memory Size, RAM Size, Core Architecture.
PIC16LC65B-04I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC65BT-04I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC65B-04/PQ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC65AT-04I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC64AT-04/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC65B-04/PT Tỷ lệ tối đa & tính chất điện
| Core Processor | PIC16C (8-bit RISC) |
| Core Size | 8-bit |
| Instruction Set | 35 single-word instructions |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14) |
| RAM Size | 192 bytes |
| EEPROM Size | None (OTP device) |
| Maximum Clock Speed | 4 MHz (4 MIPS) |
| Supply Voltage Range | 2.5 V to 5.5 V |
| I/O Pins | 33 |
| ADC | 8-bit, 5 channels |
| Connectivity | I2C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Package Type | 44-pin TQFP (10x10 mm) |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | 0C to +70C (commercial) |
| Temperature Grade | COMMERCIAL |
| Terminal Form | GULL WING |
Cấu hình chân PIC16LC65B-04/PT
| 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 — PORTE bit 0 / read control |
| Chân 9 | RE1/WR — PORTE bit 1 / write control |
| Chân 10 | RE2/CS — PORTE bit 2 / chip select |
| Chân 11 | VDD — Positive supply voltage (2.5V-5.5V) |
| Chân 12 | VSS — Ground reference |
| Chân 13 | OSC1/CLKIN — Oscillator input / external clock in |
| Chân 14 | OSC2/CLKOUT — Oscillator output / clock out |
| Chân 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator out / Timer1 clock in |
| Chân 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator in / CCP2 PWM out |
| Chân 17 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM out |
| Chân 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 19 | RD0 — PORTD bit 0 |
| Chân 20 | RD1 — PORTD bit 1 |
| Chân 21 | RD2 — PORTD bit 2 |
| Chân 22 | RD3 — PORTD 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 / UART TX / clock |
| Chân 26 | RC7/RX/DT — PORTC bit 7 / UART RX / data |
| Chân 27 | RD4 — PORTD bit 4 |
| Chân 28 | RD5 — PORTD bit 5 |
| Chân 29 | RD6 — PORTD bit 6 |
| Chân 30 | RD7 — PORTD bit 7 |
| Chân 31 | VSS — Ground reference |
| Chân 32 | VDD — Positive supply voltage (2.5V-5.5V) |
| Chân 33 | RB0/INT — PORTB bit 0 / external interrupt |
| 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 | AVDD — Analog positive supply |
| Chân 42 | AVSS — Analog ground |
| Chân 43 | NC — Not connected (per datasheet) |
| Chân 44 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC16LC65B-04/PT phù hợp cho 6 Áp dụngs: Appliance Control Boards, Industrial Control Panels, Small Motor-Control Boards, Sensor Front-End Modules, Human-Machine Interface (HMI) Boards, Low-End Instrumentation.
Appliance Control Boards
The PIC16LC65B-04/PT fits mid-volume home-appliance controllers such as washing-machine user interfaces, microwave keypads, and dishwasher timers. With 33 I/O pins the MCU can directly scan 4x4 key matrices, drive multiplexed LED or seven-segment displays, and read level sensors without external logic. The on-chip PWM module produces low-frequency drive signals for solenoid, buzzer and triac-triggering circuits, while the 8-bit ADC samples thermistor or water-level sensors. Operating from 2.5V-5.5V lets the same board share 5V and 3.3V subsystems. According to Microchip home-appliance reference designs, this MCU family is the workhorse for cost-sensitive appliance platforms.
Được đề xuất
Industrial Control Panels
The PIC16LC65B-04/PT suits industrial control panels for machine tools, conveyor systems and HVAC actuators. Its 5-channel 8-bit ADC reads 0-5V analog sensor signals such as pressure transducers, current shunts and potentiometer feedback, while the UART provides isolated RS-232 or RS-485 communication with a host PLC. The integrated Brown-out Detect/Reset and Watchdog Timer improve field reliability against supply brownouts and firmware lockups, both critical in industrial environments. According to the Microchip PIC16C6X datasheet, the part operates across 2.5V-5.5V from regulated 24V-to-5V industrial rails.
Được đề xuất
Small Motor-Control Boards
The PIC16LC65B-04/PT supports small brushed-DC and unipolar stepper motor controllers in robotics, fans and pumps. The on-chip PWM drives MOSFET gate drivers at low frequencies (typically under 25 kHz), while the ADC measures back-EMF or current shunt for closed-loop control. The 4 MIPS instruction throughput gives 1 µs per instruction, sufficient for trapezoidal commutation on small stepper motors. The 44-pin TQFP package provides dedicated pins for Hall-sensor inputs, fault flags and direction-control signals. According to Microchip motor-control reference designs, this MCU family is widely used in cost-optimized BLDC and stepper platforms.
Được đề xuất
Sensor Front-End Modules
The PIC16LC65B-04/PT operates as a low-cost sensor front-end, aggregating analog sensor signals, digitizing via its 8-bit ADC, and transmitting results over UART or SPI to a host processor. With 5 ADC channels, the MCU can read multiple thermistors, photodiodes, or strain gauges simultaneously. The I2C/SPI peripheral also lets the MCU act as a peripheral to a more powerful host. According to Microchip sensor-hub reference designs, the PIC16 mid-range family is widely deployed in environmental and IoT sensor nodes where low power and low cost dominate over raw processing power.
Được đề xuất
Human-Machine Interface (HMI) Boards
The PIC16LC65B-04/PT drives small HMI boards with keypads, character LCDs and LED indicators. Its 33 I/O pins are sufficient for 4x4 key matrices, multiplexed 7-segment or character LCD interfaces, and discrete status LEDs. The PWM module also drives LED backlights and buzzer tones. Operating from 2.5V-5.5V, it can be powered from the same 5V rail as character LCDs. According to Microchip HMI reference designs, this MCU is a popular choice for low-end industrial operator panels.
Được đề xuất
Low-End Instrumentation
The PIC16LC65B-04/PT powers low-end instrumentation such as digital panel meters, hand-held multimeters, and simple data loggers. Its 5-channel 8-bit ADC digitizes voltage, current and temperature inputs, while 192 bytes of RAM and 7 KB of OTP program memory support calibration tables and simple averaging filters. The UART outputs measurement data to a host PC or display. According to Microchip instrumentation references, this MCU family offers a low-cost path to standalone measurement products with deterministic 1-cycle instruction execution.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC65B-04/PT — 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 | PIC16LC65B-04I/PT | PIC16LC65BT-04I/PT | PIC16LC65B-04/PQ | PIC16LC65AT-04I/PT | PIC16LC64AT-04/PT |
|---|---|---|---|---|---|---|
| Package | 44-pin TQFP (10x10 mm) | 44-pin TQFP (10x10 mm) - same | 44-pin TQFP (10x10 mm) - same | 44-pin MQFP - same pin count, larger body | 44-pin TQFP (10x10 mm) - same | 44-pin TQFP (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 4 KB OTP |
| RAM | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 128 bytes |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 |
| ADC | 8-bit, 5 channels | 8-bit, 5 channels | 8-bit, 5 channels | 8-bit, 5 channels | 8-bit, 5 channels | 8-bit, 5 channels |
| Max Clock Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Supply Voltage | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V |
| Temperature Grade | Commercial (0C to +70C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) | Commercial | Industrial (-40C to +85C) | Commercial |
Bảo phân biệt quan trọng
- Pin-compatible drop-in across the entire LC65B family (vsPIC16LC65B-04I/PT)
- TQFP package with full peripheral access (vsPIC16LC64AT-04/PT)
- Mid-range PIC16 architecture with 1-cycle instruction throughput (vsPIC16LC65B-04/PQ)
Ghi chú thiết kế
Place a 0.1 µF decoupling capacitor as close as possible to every VDD/VSS pair on the PIC16LC65B-04/PT. According to the Microchip PIC16C6X family datasheet, VDD pins 11 and 32 each require their own local bypass cap; sharing one cap between both pins causes voltage transients during high-speed I/O switching. For noisy industrial environments, add a bulk 10 µF tantalum cap near the MCU supply.
Follow Microchip AN588 oscillator-layout guidelines when designing the crystal or resonator circuit for PIC16LC65B-04/PT. Keep the crystal traces short (under 10 mm), surround them with a grounded guard ring, and place C1/C2 load caps within 4 mm of OSC1/OSC2 pins. Poor oscillator layout is the most common cause of PIC16 mid-range MCU start-up failures in production.
OTP (One-Time Programmable) memory on the PIC16LC65B-04/PT cannot be erased after the first programming write. Do not use OTP parts during firmware development - prototype with the Flash-based PIC16F877-I/PT or PIC16F887-I/PT first, then commit the validated firmware to a PIC16LC65B-04/PT for production. According to Microchip migration notes, the Flash parts share the same TQFP-44 footprint and peripheral set, making PCB re-use straightforward.
For analog measurements with the 8-bit ADC on PIC16LC65B-04/PT, route AVSS (pin 33) separately from digital VSS and join them only at a single point near the regulator. AVSS noise directly couples into ADC readings via the internal reference. Per Microchip mid-range MCU layout guides, a 10 µH ferrite bead between digital and analog VDD supplies also improves ADC noise performance.
Thông tin tuân thủ
Lifecycle stage ACTIVE per Microchip and DigiKey (321468). RoHS/REACH/lead-free status marked unknown because the verified web data snippets do not include explicit compliance declarations for this part number - consult the Microchip product page or the manufacturer datasheet environmental section for definitive values.