PIC16LC65A-04/P - 8-Bit 4MHz 7KB OTP MCU | Microchip | DIP-40
MPN: PIC16LC65A-04/P ✓ Hoạt độngPIC16LC65A-04/P Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and programmable I/O peripherals. The PIC16C/LC family belongs to the broader 8-bit microcontroller category, which sits under the embedded computing -> semiconductor device hierarchy. LC variants are designed for low-voltage operation (down to ~2.5-3.0V), making them suitable for battery-powered designs where 'LC' stands for Low-power CMOS.
Key features include 33 digital I/O lines, an 8-channel 8-bit ADC, two 8-bit timers and one 16-bit timer, a USART for serial communication, a Capture/Compare/PWM (CCP) module, and a watchdog timer with its own on-chip RC oscillator for maximum reliability. The architecture is fully static, uses a Harvard design with separate program and data buses, and offers 35 single-word instructions where all instructions execute in a single cycle except program branches (two cycles).
The 4 MHz speed grade (the '-04' suffix) corresponds to a 4 MHz oscillator input with a 1 microsecond instruction cycle, balancing throughput and power consumption. The 40-pin PDIP form factor is the classic through-hole industrial/Educational/Maker-friendly footprint, ideal for breadboards, IC sockets, legacy upgrades, and test fixtures where mechanical robustness matters more than board area.
Typical applications include industrial control front-ends, appliance controllers, instrumentation subsystems, low-power sensor nodes, and educational development boards. The OTP memory suits volume production where the firmware is fixed and field-reprogramming is not required; for flash-based flexibility, the PIC16F-series is the typical upgrade path.
When designing with this MCU, account for the OTP memory limitation by using a UV-erasable windowed (JW) variant for prototype development, then migrating to the OTP 'P' package for production. Ensure your in-circuit emulator or programmer (e.g., PICSTART Plus, MPLAB PM3) supports the LC low-voltage range before committing to a hardware platform.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC65A-04/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 PIC16LC65A-04/P (cùng hình factor và footprint) — khác nhau ở Package, Timers, Program Memory Type, Instruction Set, Core.
PIC16LC65B-04/P
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LC65A-04I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F74-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C711-04/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F630-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC65A-04/P Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit PIC RISC |
| Program Memory Size | 7 KB (4K x 14) OTP |
| RAM Size | 192 bytes |
| Maximum CPU Speed | 4 MHz (1 us instruction cycle) |
| Supply Voltage (Vdd) | 3.0 V to 5.5 V |
| I/O Pins | 33 |
| ADC | 8 channels, 8-bit |
| Timers | 2 x 8-bit, 1 x 16-bit |
| Communication Interfaces | USART (SCI), SSP/SPI/I2C |
| CCP/PWM Modules | 1 |
| Watchdog Timer | Yes (with dedicated on-chip RC oscillator) |
| Instruction Set | 35 single-word instructions, all single-cycle except branches (2-cycle) |
| Program Memory Type | OTP (One-Time-Programmable) |
| Nhiệt độ hoạt động | -40 C to +85 C (industrial) |
| Hộp | 40-pin PDIP (DIP-40, 0.600 in / 15.24 mm) |
| Kiểu lắp đặt | Through-Hole |
| Số chân | 40 |
Cấu hình chân PIC16LC65A-04/P
| Chân 1 | MCLR/VPP — Master clear reset (active low) / programming voltage input |
| 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 / Timer 0 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 | VDD — Positive supply (3.0-5.5 V) |
| Chân 12 | VSS — Ground reference |
| Chân 13 | OSC1/CLKIN — Oscillator input / external clock input |
| Chân 14 | OSC2/CLKOUT — Oscillator output / clock out |
| 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 output |
| Chân 17 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| 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 TX / clock |
| Chân 26 | RC7/RX/DT — PORTC bit 7 / USART RX / 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 reference |
| Chân 32 | VDD — Positive supply (3.0-5.5 V) |
| 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 / LVP programming |
| Chân 37 | RB4 — PORTB bit 4 |
| Chân 38 | RB5 — PORTB bit 5 |
| Chân 39 | RB6/PGC — PORTB bit 6 / ICD clock |
| Chân 40 | RB7/PGD — PORTB bit 7 / ICD data |
Ứng dụng tiêu biểu
PIC16LC65A-04/P phù hợp cho 6 Áp dụngs: Industrial Control Front-End, Appliance Control Board, Educational Development Board, Instrumentation Subsystem, Low-Power Sensor Node, Legacy Replacement / Service Stock.
Industrial Control Front-End
The PIC16LC65A-04/P suits industrial control front-ends where 33 digital I/O, an 8-channel 8-bit ADC, and one USART deliver enough analog and digital channels for sensor aggregation and actuator drive at 3.3 V or 5 V. Its 4 MHz core and 7 KB OTP program memory cover typical PID loops, multi-channel sensor scans, and Modbus-style polling without external logic. The 40-pin PDIP package also simplifies in-field replacement and socket-based servicing on legacy industrial lines. Pair with the PIC16F74-I/P Flash variant for new designs where firmware iteration matters more than unit cost.
Được đề xuất
Appliance Control Board
In appliance controllers (white goods, kitchen equipment, HVAC dampers), the PIC16LC65A-04/P provides the digital I/O count to drive relays, triacs, and LED indicators while reading thermistors or pressure sensors through its 8-channel ADC. The 1 us instruction cycle at 4 MHz is sufficient for slow control loops, while the LC low-voltage range supports battery-backed or energy-saving subcircuits. The 40-pin PDIP form factor eases manufacturing with through-hole assembly and traditional wave-solder processes. Its watchdog timer with dedicated RC oscillator improves reliability in unattended appliance installations.
Được đề xuất
Educational Development Board
The PIC16LC65A-04/P is a classic PIC16 mid-range teaching platform because the 40-pin PDIP format fits breadboards and educational trainer sockets directly. Students can exercise the ADC, USART, timers, and CCP PWM module on a single chip at 4 MHz without surface-mount rework. The OTP memory forces disciplined firmware planning, mirroring real production constraints. The instruction set of only 35 single-word instructions is small enough to be mastered in a semester course, and the PICSTART Plus / MPLAB PM3 toolchain supports LC-voltage programming out of the box.
Được đề xuất
Instrumentation Subsystem
For instrumentation subassemblies (data loggers, panel meters, low-speed signal conditioners), the PIC16LC65A-04/P offers an 8-channel 8-bit ADC plus USART for sending digitized values to a host controller or display. Its 192-byte RAM and 4 MHz throughput are well-matched to slow multiplexed scans of thermocouples, strain gauges, or potentiometers. The 40-pin PDIP package and 3.0-5.5 V supply make it compatible with both legacy 5 V analog front-ends and modern 3.3 V signal chains, while OTP memory prevents accidental firmware tampering in field-deployed instruments.
Được đề xuất
Low-Power Sensor Node
Battery-powered or energy-harvesting sensor nodes benefit from the PIC16LC65A-04/P 's LC low-voltage operation down to 3.0 V, which lets a single lithium cell or two AA batteries power the entire node. The 8-bit ADC plus digital I/O read temperature, humidity, or PIR sensors, and the USART forwards the data to a radio module such as an XBee or LoRa transceiver. SLEEP mode plus the watchdog timer achieves quiescent currents in the microamp range between measurements. The DIP-40 package simplifies hand-soldered prototyping of remote environmental monitors.
Được đề xuất
Legacy Replacement / Service Stock
Many industrial installations built in the late 1990s and early 2000s use PIC16LC65A-04/P on through-hole control boards that have since gone obsolete or require long-term spares. The 40-pin PDIP remains the de facto industrial service stock footprint because it accepts IC sockets, allowing fast board swap without rework. Stocking PIC16LC65A-04/P ensures 15-20 year service continuity for legacy equipment; the LC65B revision and PIC16F74-I/P provide pin-compatible alternatives when the OTP 'A' revision reaches end-of-life.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC65A-04/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 | PIC16LC65B-04/P | PIC16LC65A-04I/P | PIC16F74-I/P |
|---|---|---|---|---|
| Package | PDIP-40 | PDIP-40 - same | PDIP-40 - same | PDIP-40 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 7 KB (4K x 14) OTP | 7 KB OTP | 7 KB OTP | 7 KB Flash |
| Maximum Frequency | 4 MHz | 4 MHz | 4 MHz | 20 MHz |
| Supply Voltage | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 2.0 V to 5.5 V |
| I/O Pins | 33 | 33 | 33 | 33 |
| ADC | 8 ch x 8-bit | 8 ch x 8-bit | 8 ch x 8-bit | 8 ch x 8-bit |
| Memory Type | OTP | OTP | OTP | Flash (reprogrammable) |
| Operating Temperature | 0 C to +70 C (commercial) | 0 C to +70 C (commercial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) |
Bảo phân biệt quan trọng
- Pin-for-pin drop-in with PIC16F74-I/P, but with OTP memory (vsPIC16F74-I/P)
- Silicon revision B available for new designs (vsPIC16LC65B-04/P)
- Industrial temperature range variant offered (vsPIC16LC65A-04I/P)
Ghi chú thiết kế
Estimated: Vdd supply design must provide 3.0-5.5 V with bulk decoupling of at least 1 x 100 nF ceramic close to pins 11/12 and 31/32 (both Vdd/Vss pairs). Add a 10 uF tantalum or aluminum bulk capacitor near the MCU for switching transients. For battery applications, total current draw in SLEEP is typically 1-5 uA with the watchdog disabled.
Place the 4 MHz crystal or resonator within 1 cm of OSC1/OSC2 (pins 13-14), with the load capacitors (typically 15-33 pF) tied to ground. Keep high-speed traces (USART, SPI) away from the oscillator area to prevent injection of jitter. Route MCLR (pin 1) with a 10 kohm pull-up and a 100 nF decoupling cap directly to the reset line to avoid spurious resets on noisy industrial busses.
Do not use the OTP (non-windowed) part for prototype development - once programmed, the device cannot be erased. Use the JW (windowed) variant or migrate to the Flash-based PIC16F74-I/P for development. Be aware that the '-04' speed grade is limited to 4 MHz; verify timing budgets before assuming the silicon can reach 10 or 20 MHz like the higher grades. Finally, on the LC family, do not drop Vdd below 3.0 V or brown-out resets will trigger randomly.
Analog inputs (RA0-RA5, RE0-RE2) should be guarded from digital switching traces by a ground pour on the analog side of the board. AVdd (when used as the ADC reference) must be tied to Vdd with its own 10 uH ferrite + 100 nF cap to reduce digital switching noise coupling into ADC samples. PORTB pull-ups (RBPU bit) should be enabled for switch inputs to avoid floating pins when the board is unpowered.
Thông tin tuân thủ
RoHS and lead-free status not explicitly stated in the verified web data; Microchip PIC16 OTP parts are typically lead-free but confirmation requires manufacturer datasheet section 'Physical Dimensions' or product page. AEC-Q100 not applicable for this commercial-grade industrial MCU.
