PIC16LC54C-04I/P - 8-bit 4MHz 768B OTP MCU | Microchip 18-PDIP
MPN: PIC16LC54C-04I/P ✓ Hoạt độngPIC16LC54C-04I/P Tóm tắt
An 8-bit microcontroller (MCU) is a small computer-on-a-chip containing a CPU, program memory, RAM, and peripherals on a single die. PIC microcontrollers are part of the broader category of microcontrollers -> embedded controllers -> integrated circuits -> semiconductors. The PIC16C5x architecture delivers instruction performance roughly an order of magnitude higher than competing 8-bit MCUs in its price class, using 12-bit wide instructions with 2:1 code compression over typical 8-bit architectures.
Key features include 4MHz maximum clock, 768 bytes OTP program memory, 25 bytes RAM, 12 I/O ports, and a low-power CMOS process. The /P suffix denotes the through-hole PDIP-18 form factor, while the I in /04I/P indicates the industrial temperature grade (-40C to +85C). The OTP memory is one-time programmable but offers cost-effective prototyping and low-volume production.
Technical depth: the PIC16C5x uses a Harvard architecture with separate program and data buses, 33 single-word instructions, and a 12-bit instruction width. Two hardware interrupt sources (external INT and timer overflow) and a watchdog timer are provided. Power consumption is low for the LC variant, making it suitable for battery-powered applications.
Typical applications include simple embedded control (appliance controls, toys, lighting), sensor signal conditioning front-ends, low-speed serial interface bridges, and legacy industrial replacement designs. The /P PDIP package also supports easy breadboarding and educational development boards.
When designing with this part, observe that OTP memory cannot be re-programmed, so choose the PIC16F54-I/P or PIC16C54C-04/P flash variants for development cycles requiring code iteration. The 12-bit instruction width may require recompilation if migrating to PIC16F1x or PIC18 architectures.
This page synthesizes distributor pricing, drop-in alternatives from Microchip's PIC16 family, and practical design notes not aggregated on DigiKey or Mouser product pages.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC54C-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 PIC16LC54C-04I/P (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, Program Memory Size, Operating Temperature Range, Program Memory Type.
PIC16LC54C-04/P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C54C-04I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C54C-04/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F54-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC54A-04/P
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F54-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC54C-04I/P Tỷ lệ tối đa & tính chất điện
| Manufacturer | Microchip Technology |
| Series | PIC 16C |
| Core Processor | PIC |
| Core Size | 8-bit |
| Maximum Clock Speed | 4 MHz |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 768 B (512 x 12) |
| RAM Size | 25 B |
| Number of I/O Pins | 12 |
| Supply Voltage Range | 3 V to 5.5 V |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Package Type | 18-pin PDIP (Through-Hole) |
| Kiểu lắp đặt | Through-Hole |
| Memory Architecture | Harvard |
| Instruction Set Width | 12-bit |
| Number of Instructions | 33 |
| Watchdog Timer | Yes |
| Trạng thái RoHS | unknown |
Cấu hình chân PIC16LC54C-04I/P
| Chân 1 | RA2 — Port A bit 2 (digital I/O) |
| Chân 2 | RA3 — Port A bit 3 (digital I/O) |
| Chân 3 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Chân 4 | MCLR/VPP — Master Clear (reset) / Programming voltage input |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0/INT — Port B bit 0 / External interrupt input |
| Chân 7 | RB1 — Port B bit 1 (digital I/O) |
| Chân 8 | RB2 — Port B bit 2 (digital I/O) |
| Chân 9 | RB3 — Port B bit 3 (digital I/O) |
| Chân 10 | RB4 — Port B bit 4 (digital I/O) |
| Chân 11 | RB5 — Port B bit 5 (digital I/O) |
| Chân 12 | RB6 — Port B bit 6 (digital I/O) |
| Chân 13 | RB7 — Port B bit 7 (digital I/O) |
| Chân 14 | VDD — Positive supply voltage (3V-5.5V) |
| Chân 15 | OSC2/CLKOUT — Oscillator output / Clock output |
| Chân 16 | OSC1/CLKIN — Oscillator input / External clock input |
| Chân 17 | RA0 — Port A bit 0 (digital I/O) |
| Chân 18 | RA1 — Port A bit 1 (digital I/O) |
Ứng dụng tiêu biểu
PIC16LC54C-04I/P phù hợp cho 6 Áp dụngs: Low-Cost Appliance Control, Toys and Hobby Electronics, Lighting Control Modules, Simple Sensor Signal Conditioning, Legacy Industrial Replacement, Educational Development Boards.
Low-Cost Appliance Control
The PIC16LC54C-04I/P fits appliance control boards with its 4 MHz 8-bit core, 12 I/O pins for relay drivers, keypads, and LED indicators, and 768B OTP memory storing compact state-machine control code. Its 3V-5.5V supply range suits both battery and rectified-mains designs. The industrial -40C to +85C temperature grade handles oven, washer, and HVAC environments.
Được đề xuất
Toys and Hobby Electronics
The PIC16LC54C-04I/P is widely used in toys and hobby-grade electronics where the OTP memory, 25B RAM, and 12 I/O support PWM motor control, simple sound playback, and IR remote decoding. Its 4 MHz throughput is sufficient for sequenced LED animations and servo control loops. Low cost at <$3 per unit in volume makes it attractive for consumer-grade products.
Được đề xuất
Lighting Control Modules
The PIC16LC54C-04I/P drives LED dimmers, RGB controllers, and DMX512 lighting slaves where its 12 I/O pins can generate PWM channels for brightness control while the 4 MHz CPU executes fade algorithms and serial parsing. OTP memory locks the final production code, preventing firmware tampering. The 18-PDIP package simplifies through-hole assembly for low-volume lighting products.
Được đề xuất
Simple Sensor Signal Conditioning
The PIC16LC54C-04I/P performs sensor readout, threshold detection, and digital filtering in standalone environmental sensors where the 25B RAM holds calibration constants and the 4 MHz clock supports ADC polling. Industrial temperature grade suits outdoor weather stations. OTP memory locks the calibration to the specific sensor batch.
Được đề xuất
Legacy Industrial Replacement
The PIC16LC54C-04I/P replaces obsolete PIC16C54 and PIC16C54A silicon in legacy industrial equipment where the 18-pin PDIP footprint, 4 MHz clock, and PIC16C5x instruction set remain drop-in compatible. The industrial -40C to +85C temperature grade matches factory floor conditions. Source code compiled for PIC16C5x architecture runs without modification.
Được đề xuất
Educational Development Boards
The PIC16LC54C-04I/P is mounted on educational microcontroller trainer boards and university curricula due to its 18-PDIP through-hole package which is easy to insert in breadboards. The 12 I/O pins are sufficient for student projects involving switches, LEDs, and 7-segment displays. The PIC16C5x instruction set is simple enough to teach RISC fundamentals in a single semester.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC54C-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 | PIC16LC54C-04/P | PIC16C54C-04I/P | PIC16C54C-04/P | PIC16F54-I/P | PIC16LC54A-04/P |
|---|---|---|---|---|---|---|
| Package | 18-PDIP | 18-PDIP - same | 18-PDIP - same | 18-PDIP - same | 18-PDIP - same | 18-PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Size | 8-bit | 8-bit | 8-bit | 8-bit | 8-bit | 8-bit |
| Max Clock Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Program Memory Size | 768 B (OTP) | 768 B (OTP) | 768 B (OTP) | 768 B (OTP) | 768 B (Flash) | 768 B (OTP) |
| RAM Size | 25 B | 25 B | 25 B | 25 B | 25 B | 25 B |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 12 |
| Supply Voltage Range | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 6.25 V | 3.0 V to 6.25 V | 2.0 V to 5.5 V | 3.0 V to 6.25 V |
| Operating Temperature | -40 C to +85 C | 0 C to +70 C | -40 C to +85 C | 0 C to +70 C | -40 C to +85 C | 0 C to +70 C |
| Memory Type | OTP | OTP | OTP | OTP | Flash | OTP |
Bảo phân biệt quan trọng
- Low-voltage LC variant extends battery life (vsPIC16C54C-04I/P)
- Industrial temperature grade for harsh environments (vsPIC16LC54C-04/P)
- Drop-in flash upgrade path via PIC16F54-I/P (vsPIC16F54-I/P)
Ghi chú thiết kế
The OTP (One-Time Programmable) memory of the PIC16LC54C-04I/P can only be programmed once. After programming, the device cannot be erased or re-flashed, so all code bugs must be resolved before final production programming. For development, use the flash-based PIC16F54-I/P variant in the same 18-PDIP footprint to iterate code without scrapping parts. Verify the entire application code path, including interrupt vectors and watchdog timer configuration, before committing OTP parts to a production run.
The LC variant operates from 3V to 5.5V, but the standard PIC16C54C variant operates up to 6.25V. Do not substitute the LC part into a 5V design expecting 6V tolerance - it will exceed absolute maximum ratings. For battery-powered designs, add a 10uF bulk capacitor plus 100nF decoupling capacitor close to VDD pin 14, and place a 10k pull-up on MCLR pin 4 to prevent spurious resets. The internal brown-out reset is not present on all PIC16C5x revisions, so verify on the silicon errata.
The 18-pin PDIP package requires through-hole mounting with 0.1 inch (2.54mm) pin pitch. For new designs, use a DIP-18 socket to allow field replacement and programming adapter access. Place decoupling capacitors (100nF ceramic + 10uF electrolytic) within 5mm of VDD pin 14, with a short ground return to VSS pin 5. The OSC1/OSC2 crystal or resonator should be placed within 10mm of pins 15-16 to minimize parasitic capacitance and ensure stable 4 MHz oscillation.
When laying out the PCB, reserve the RA0-RA4 and RB0-RB7 pin traces as direct GPIO connections to LEDs, switches, or peripheral headers. The MCLR pin (pin 4) should not be left floating - tie it to VDD through a 10k resistor to ensure proper reset behavior. If using ICSP (In-Circuit Serial Programming), route MCLR, VDD, VSS, RB6, and RB7 to a programming header to allow field updates before OTP lock.
Thông tin tuân thủ
Compliance status not explicitly stated in provided web data; RoHS/REACH lead-free status should be verified against the Microchip product page or PCN documents for the specific date code. Not AEC-Q100 qualified (not a power management or automotive-grade part).
