PIC16LC54C-04I/SO - 4MHz 8-bit OTP MCU 18-SOIC | Microchip
MPN: PIC16LC54C-04I/SO ✓ Hoạt độngPIC16LC54C-04I/SO Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and programmable I/O peripherals on a single silicon die. The PIC16LC54C belongs to the 8-bit microcontroller tier within the broader embedded controller hierarchy (8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC). Its RISC architecture executes instructions from a fixed 33-instruction set in a single instruction cycle, providing deterministic throughput for real-time control applications.
Key features include a 4 MHz maximum clock rate, 25 bytes of general-purpose RAM, 12 bidirectional I/O lines, and an OTP program memory that supports prototyping and low-volume production. The 'LC' suffix indicates a low-voltage CMOS variant optimized for battery-powered operation, while the 'C' revision provides an improved instruction set over earlier 'A' and base versions. The industrial temperature grade and OTP memory suit field-programmed, cost-sensitive embedded applications.
Architecturally, the PIC16LC54C uses a Harvard-style memory map separating program ROM (12-bit instruction width) from data RAM (8-bit byte-wide). The 4 MHz oscillator drives a four-phase internal clock that delivers 1 MIPS peak throughput, with instruction cycles as short as 1 us. A watchdog timer and power-on reset enhance field robustness, and the 12 I/O pins can be individually configured with weak pull-ups and direction control.
Typical applications include battery-powered sensor nodes, simple appliance controllers, low-cost consumer electronics, automotive interior accessories (non-safety), industrial timer/counter modules, and replacement of discrete logic in legacy designs. The wide operating voltage and low power consumption also support remote-control transmitters and small-form-factor embedded modules.
When designing with this device, ensure the OTP programming window fits your production volume and field-update model, since OTP cannot be erased or rewritten after programming. For prototypes, consider a flash-based PIC16F54 equivalent in the same 18-SOIC footprint to allow iterative firmware development before locking the OTP production code.
This page synthesizes distributor pricing, pin-compatible PIC16C5x alternatives, and practical design notes not found in the bare manufacturer datasheet, giving procurement and embedded engineers a one-stop reference for evaluating this legacy low-cost 8-bit MCU.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC54C-04I/SO — 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/SO (cùng hình factor và footprint) — khác nhau ở Watchdog Timer, Operating Temperature, Package, Program Memory Size, Core Architecture.
PIC16LC54C-04I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC54AT-04I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC54A-04E/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC54A-04/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16HV540T-04I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC54C-04I/SO Tỷ lệ tối đa & tính chất điện
| Product Type | 8-bit Microcontroller (MCU) |
| Core | PIC16 (RISC) |
| Family | PIC16C5x |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 768 B (512 x 12) |
| RAM Size | 25 B |
| Tần số xung maksimum | 4 MHz |
| Instruction Set | 33 single-word/single-cycle instructions |
| I/O Pins | 12 |
| Hộp | 18-SOIC (SOIC-18, 7.5 mil pitch) |
| Khoảng nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Kiểu lắp đặt | Surface Mount |
| Technology | Low-Voltage CMOS |
| Watchdog Timer | Yes |
| Data EEPROM | None |
Cấu hình chân PIC16LC54C-04I/SO
| Chân 1 | RA2 — Bidirectional I/O port A bit 2 |
| Chân 2 | RA3 — Bidirectional I/O port A bit 3 |
| Chân 3 | RA4/RTCC — Bidirectional I/O port A bit 4 / RTCC timer input |
| Chân 4 | MCLR/Vpp — Master Clear reset (active low) / Programming voltage input |
| Chân 5 | Vss — Ground reference |
| Chân 6 | RB0/INT — Bidirectional I/O port B bit 0 / External interrupt input |
| Chân 7 | RB1 — Bidirectional I/O port B bit 1 |
| Chân 8 | RB2 — Bidirectional I/O port B bit 2 |
| Chân 9 | RB3 — Bidirectional I/O port B bit 3 |
| Chân 10 | RB4 — Bidirectional I/O port B bit 4 |
| Chân 11 | RB5 — Bidirectional I/O port B bit 5 |
| Chân 12 | RB6 — Bidirectional I/O port B bit 6 |
| Chân 13 | RB7 — Bidirectional I/O port B bit 7 |
| Chân 14 | Vdd — Positive supply voltage |
| Chân 15 | OSC2/CLKOUT — Oscillator crystal output / Clock output |
| Chân 16 | OSC1/CLKIN — Oscillator crystal input / External clock input |
| Chân 17 | RA0 — Bidirectional I/O port A bit 0 |
| Chân 18 | RA1 — Bidirectional I/O port A bit 1 |
Ứng dụng tiêu biểu
PIC16LC54C-04I/SO phù hợp cho 6 Áp dụngs: Battery-Powered Remote Controls, Appliance Timer and Controller Modules, Automotive Interior Accessories, Industrial Counter and Timer Modules, Low-Cost Consumer Electronics, Sensor Front-End and Signal Conditioning.
Battery-Powered Remote Controls
The PIC16LC54C-04I/SO's low-voltage CMOS process and 4 MHz maximum clock keep active current low, while 768 bytes of OTP program memory fits compact IR/RF encoder firmware. Its 25 bytes of RAM handles short button-debounce state, and 12 I/O pins cover matrix keypads and LED indicators. Compared to a discrete 555-timer encoder, this MCU adds protocol configurability without battery penalty, extending coin-cell life across standby-heavy duty cycles typical of TV remotes and garage-door key fobs.
Được đề xuất
Appliance Timer and Controller Modules
With 12 I/O pins, the PIC16LC54C-04I/SO can drive relays, sense push-buttons, and read thermistor inputs in washing machines, microwave ovens, or small kitchen appliances. The 33-instruction RISC core executes a 1 us cycle at 4 MHz, giving the deterministic timing needed for relay de-bounce and PWM-like buzzer tones. Industrial -40C to +85C temperature rating supports under-cabinet heat, while OTP memory locks firmware to prevent field tampering in cost-sensitive consumer products.
Được đề xuất
Automotive Interior Accessories
The PIC16LC54C-04I/SO's industrial -40C to +85C temperature range and 12 GPIO pins suit non-safety automotive accessories such as ambient lighting controllers, seat-position memory modules, and aftermarket gauge drivers. Its OTP memory and low unit cost fit accessory-tier BOMs, while the 4 MHz speed handles CAN-bridge-free local tasks like LED fading and switch multiplexing. Engineers designing for cabin environments appreciate the small 18-SOIC footprint and Microchip's long-lifecycle supply commitment.
Được đề xuất
Industrial Counter and Timer Modules
The PIC16LC54C-04I/SO serves as a low-cost replacement for electromechanical counters in factory automation, providing 12 I/O lines for sensor inputs, display drivers, and relay outputs. The watchdog timer and power-on reset improve field robustness against brown-outs common in industrial control cabinets. The 768-byte OTP memory is sufficient for fixed counting algorithms and preset values, while the 18-SOIC package allows compact DIN-rail-mount PCB designs.
Được đề xuất
Low-Cost Consumer Electronics
Toy manufacturers, novelty gadgets, and educational kits frequently use the PIC16LC54C-04I/SO for its < $3 unit price, 12 GPIO pins, and OTP code-locking that prevents firmware cloning. The 4 MHz clock and 33-instruction RISC core support interactive sound effects, motor pulse-width patterns, and simple LED chases from a single chip. Combined with a CR2032 coin cell, the low-voltage CMOS design enables multi-month battery life in low-duty-cycle consumer products sold through retail.
Được đề xuất
Sensor Front-End and Signal Conditioning
The PIC16LC54C-04I/SO can host simple sensor linearization, threshold detection, and alarm-trigger logic at the edge of a sensing system, freeing a downstream host MCU from low-level scanning. Its 12 I/O lines multiplex multiple analog front-ends via external FETs, while 768 bytes of OTP memory holds calibration constants and look-up tables. The 4 MHz instruction rate supports polling loops in the 10 kHz range, sufficient for thermistor, photodiode, and Hall-effect sensor conditioning.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC54C-04I/SO — 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-04I/P | PIC16LC54AT-04I/SO | PIC16LC54A-04E/SS | PIC16LC54A-04/SS | PIC16HV540T-04I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC (SOIC-18) | 18-PDIP (through-hole) | 18-SOIC (SOIC-18) - same | 20-SSOP | 20-SSOP | 18-SOIC (SOIC-18) - same |
| Maximum Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Program Memory | 768 B OTP (512 x 12) | 768 B OTP | 768 B OTP | 768 B OTP | 768 B OTP | 768 B OTP |
| RAM | 25 B | 25 B | 25 B | 25 B | 25 B | 25 B |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 12 |
| Temperature Range | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +125C (Extended) | 0C to +70C (Commercial) | -40C to +85C |
| Special Feature | Low-voltage CMOS OTP | Low-voltage CMOS OTP, through-hole | Low-voltage CMOS OTP, tape-and-reel | Extended temp range | Commercial temp range | High-voltage I/O (HV variant) |
Bảo phân biệt quan trọng
- Pin-compatible flash alternative available in same footprint (vsPIC16F54-I/SO)
- Through-hole variant simplifies hand-prototyping (vsPIC16LC54C-04I/P)
- High-voltage variant supports mains-connected sensors (vsPIC16HV540T-04I/SO)
Ghi chú thiết kế
OTP program memory cannot be erased after programming. Plan your firmware revision-control workflow before committing OTP code in production. For prototype development, use the flash-based PIC16F54-I/SO in the same 18-SOIC footprint; once firmware is locked, migrate to the PIC16LC54C-04I/SO for cost-down without PCB rework. Estimate: 768 bytes of OTP is sufficient for ~250-300 instructions when written in efficient PIC assembly, but only ~150 instructions if the C compiler generates verbose code.
The PIC16LC54C's low-voltage CMOS process draws significantly less active current than standard 5 V NMOS PIC16C5x variants. Decouple Vdd with a 100 nF ceramic capacitor placed within 5 mm of the Vdd pin, and add a 10 uF bulk capacitor if the supply is shared with relays or motors. Estimated: at 4 MHz and 3 V Vdd, active current is roughly 1-2 mA, allowing CR2032 coin-cell operation for years in standby-dominant duty cycles.
Place the oscillator crystal or resonator within 5 mm of the OSC1 and OSC2 pins to minimize stray capacitance. For cost-sensitive designs, an internal RC oscillator mode eliminates the external crystal entirely, but trades absolute frequency accuracy for BOM savings. Keep the MCLR/Vpp pin trace short and add a 10 kohm pull-up to Vdd for reliable reset behavior; do not leave MCLR floating even in battery-powered applications.
The 18-SOIC package's theta_JA of approximately 100 C/W is adequate for the PIC16LC54C's low active current (single-digit mA). Estimated: at 5 V Vdd, 4 MHz, and 2 mA active current, internal power dissipation is ~10 mW, well below any thermal concern. No heatsink is required for normal embedded applications; however, sustained operation above 70C ambient should still be verified against the datasheet's thermal derating curves.
Thông tin tuân thủ
RoHS/REACH/lead-free status not stated in the verified distributor data; consult Microchip's product environmental compliance page. AEC-Q100 not applicable - this is a commercial/industrial-grade 8-bit MCU, not an automotive-qualified part. Conflict-minerals declaration available from Microchip per company policy.
