PIC16LC554-04E/P - 8-Bit OTP MCU 4MHz 896B | Microchip
MPN: PIC16LC554-04E/P ✓ Hoạt độngPIC16LC554-04E/P Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data RAM, and peripheral interfaces into one device. The PIC16LC5X family belongs to the Harvard-architecture 8-bit RISC microcontrollers from Microchip, sitting within the broader taxonomy of microcontroller -> embedded processor -> semiconductor IC. The PIC16LC5X series is positioned as a baseline, OTP-based, low-pin-count family optimized for cost-sensitive and high-volume embedded applications where a single-task program is sufficient.
Key features of the PIC16LC554-04E/P include 4 MHz maximum clock speed, 12 special-function registers, a 12-bit instruction word with 33 single-word instructions, a two-stack-level hardware stack, an 8-bit real-time timer/counter with 8-bit prescaler, power-on reset (POR), watchdog timer (WDT) with its own on-chip RC oscillator, and a wide 3.0 V to 6.25 V supply voltage range. The 'LC' prefix indicates the low-voltage CMOS process variant, and the 'E' suffix marks the extended industrial temperature grade (-40C to +125C).
The architecture uses a RISC instruction set with single-cycle execution for most instructions (except branches), an internal RC oscillator option, and an EPROM/OTP program memory that is one-time programmable but erasable only by UV exposure (windowed CERDIP variants). The '04' suffix denotes the 4 MHz speed grade, while the '/P' package code denotes the plastic DIP form factor for through-hole PCB assembly.
Typical applications include appliance controls, simple sensor interfaces, low-cost consumer electronics, battery-powered timers, and legacy industrial control modules. The PIC16LC554-04E/P is well suited for designs that demand deterministic behavior, small code footprint, and a wide supply-voltage tolerance.
Design consideration: because OTP memory cannot be re-programmed in-circuit, design verification on a windowed CERDIP variant (PIC16LC554-04E/JW) is recommended before committing to the OTP plastic-DIP version for production.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, application notes, and design trade-offs that go beyond the manufacturer datasheet summary, helping engineers select the right baseline MCU for cost-sensitive embedded designs.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC554-04E/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 PIC16LC554-04E/P (cùng hình factor và footprint) — khác nhau ở Program Memory Size, Program Memory Type, RAM Size, Core Architecture, I/O Pins.
PIC16LC554-04/P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC554-04E/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC558-04E/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC54A-04E/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC54C-04I/P
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LC554-04E/P Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit RISC (PIC16C Harvard) |
| Program Memory Type | OTP (One-Time Programmable) EPROM |
| Program Memory Size | 896 B (512 x 14 words) |
| Data RAM | 80 B |
| Maximum CPU Clock | 4 MHz |
| Instruction Word Width | 14 bits |
| Instruction Set Size | 33 instructions |
| Supply Voltage Range | 3.0 V to 6.25 V |
| I/O Pins | 12-13 |
| Timers | 1 x 8-bit timer/counter with 8-bit prescaler |
| Watchdog Timer (WDT) | Yes, with dedicated on-chip RC oscillator |
| Power-On Reset (POR) | Yes |
| Hardware Stack Levels | 2 |
| Hộp | 18-PDIP (Plastic DIP, through-hole) |
| Khoảng nhiệt độ hoạt động | -40C to +125C (Extended, 'E' grade) |
| Kiểu lắp đặt | Through-Hole |
| Số chân | 18 |
| Trạng thái RoHS | Compliant (per DigiKey product listing) |
Cấu hình chân PIC16LC554-04E/P
| Chân 1 | RA2 — Bidirectional I/O port A bit 2 |
| Chân 2 | RA3 — Bidirectional I/O port A bit 3 |
| Chân 3 | RTCC — Timer/counter external clock input (also RA4) |
| Chân 4 | MCLR — Master Clear reset input (active low) |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0 — Bidirectional I/O port B bit 0 (interrupt on change) |
| Chân 7 | RB1 — Bidirectional I/O port B bit 1 (interrupt on change) |
| Chân 8 | RB2 — Bidirectional I/O port B bit 2 (interrupt on change) |
| Chân 9 | RB3 — Bidirectional I/O port B bit 3 (interrupt on change) |
| Chân 10 | RB4 — Bidirectional I/O port B bit 4 (interrupt on change) |
| Chân 11 | RB5 — Bidirectional I/O port B bit 5 (interrupt on change) |
| Chân 12 | RB6 — Bidirectional I/O port B bit 6 (interrupt on change) |
| Chân 13 | RB7 — Bidirectional I/O port B bit 7 (interrupt on change) |
| Chân 14 | VDD — Positive supply voltage (3.0 V to 6.25 V) |
| Chân 15 | OSC2 — Oscillator crystal output (or RC clock out) |
| Chân 16 | OSC1 — Oscillator crystal input (or RC clock in) |
| Chân 17 | RA0 — Bidirectional I/O port A bit 0 |
| Chân 18 | RA1 — Bidirectional I/O port A bit 1 |
Ứng dụng tiêu biểu
PIC16LC554-04E/P phù hợp cho 6 Áp dụngs: Appliance Control Modules, Low-Cost Consumer Electronics, Sensor Interface Front-Ends, Battery-Powered Timers, Legacy Industrial Control Modules, Automotive Auxiliary Modules.
Appliance Control Modules
The PIC16LC554-04E/P suits appliance control boards where 12-13 I/O pins are sufficient for keypad scanning, LED or relay driving, and a single sensor interface. Its 896 B OTP program memory comfortably fits typical washing-machine, microwave, or dishwasher state-machine firmware with timing and mode tables. The wide 3.0-6.25 V supply range accepts unregulated wall-adapter rails after a rectifier, and the 4 MHz CPU clock gives microsecond instruction timing - fast enough to multiplex 7-segment displays and debounce mechanical switches without perceptible lag.
Được đề xuất
Low-Cost Consumer Electronics
Toy controllers, remote-control transmitters, novelty gadgets and small kitchen-counter appliances frequently use the PIC16LC554-04E/P because its OTP cost is lower than flash alternatives and the PIC16C5X architecture is stable across the product lifetime. The 80 B RAM supports a handful of state variables and a key-scan buffer; the 12-I/O lines handle IR LEDs, button matrices and a buzzer driver. Industrial temperature grade (-40C to +125C) gives margin for enclosed-product thermal rise during continuous operation.
Được đề xuất
Sensor Interface Front-Ends
The PIC16LC554-04E/P works well as a discrete sensor-interface MCU that reads a thermistor, photocell or Hall-effect sensor, applies a linearization table in 896 B of OTP, and drives a 4-20 mA or PWM output. The 8-bit timer/counter with 8-bit prescaler can be re-purposed as a 1-wire or UART bit-banging engine, avoiding the cost of a dedicated peripheral IC. Brown-out-free OTP devices are well-suited to remote or battery-powered sensor nodes where the host MCU performs all the work and the PIC16LC554 sits as a satellite.
Được đề xuất
Battery-Powered Timers
Coin-cell or two-AA powered timer products benefit from the PIC16LC554-04E/P's low-voltage operation down to 3.0 V and its single-timer/counter plus WDT architecture. The on-chip watchdog timer with its own RC oscillator lets the MCU wake, sample, decide and return to sleep without external supervision. With minimal code footprint (typically under 256 instructions), 4 MHz operation gives microsecond granularity for pulse-width, delay and debounce timing - ideal for irrigation valves, parking-ticket dispensers or countdown modules.
Được đề xuất
Legacy Industrial Control Modules
Mature factory-automation I/O modules, protocol converters and motor-driver front-ends often specify the PIC16LC554-04E/P because the PIC16C5X architecture has decades of firmware and qualification heritage. The 18-PDIP through-hole package simplifies field-replacement and prototyping on legacy control boards; the wide 3.0-6.25 V supply accommodates 5 V logic and 24 V industrial rails after regulation. With 13 I/O pins, the MCU can serve as a single-chip relay driver, optocoupler interface or stepper sequencer in a larger control system.
Được đề xuất
Automotive Auxiliary Modules
Interior lighting controllers, seat-memory modules, accessory timers and HVAC damper drivers in older vehicles rely on extended-temperature (-40C to +125C) baseline microcontrollers like the PIC16LC554-04E/P. The OTP-programmed firmware avoids the soft-error risk of flash in high-temperature under-hood environments, and the 18-PDIP package is preferred for serviceability in dealer-installed accessories. With 80 B RAM and 12 I/O, the MCU easily drives a CAN/LIN transceiver companion chip or a small MOSFET bridge.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC554-04E/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 | PIC16LC554-04/P | PIC16LC554-04E/SO | PIC16LC558-04E/P | PIC16LC54A-04E/P | PIC16LC54C-04I/P |
|---|---|---|---|---|---|---|
| Package | 18-PDIP (through-hole) | 18-PDIP - same | 18-SOIC (surface-mount) | 18-PDIP - same | 18-PDIP - same | 18-PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 896 B (512 x 14) OTP | 896 B (512 x 14) OTP | 896 B (512 x 14) OTP | 2 KB (1K x 14) OTP | 512 B (256 x 14) OTP | 768 B (384 x 14) OTP |
| Data RAM | 80 B | 80 B | 80 B | 128 B | 25 B | 25 B |
| Max Clock Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Operating Temperature | -40C to +125C (E grade) | 0C to +70C (commercial) | -40C to +125C (E grade) | -40C to +125C (E grade) | -40C to +125C (E grade) | -40C to +85C (I grade) |
| Supply Voltage | 3.0 V to 6.25 V | 3.0 V to 6.25 V | 3.0 V to 6.25 V | 3.0 V to 6.25 V | 2.5 V to 6.25 V | 2.5 V to 6.25 V |
| I/O Pins | 12-13 | 12-13 | 12-13 | 12-13 | 12 | 12 |
Bảo phân biệt quan trọng
- Extended industrial temperature grade in 18-PDIP (vsPIC16LC554-04/P)
- Larger program memory and RAM than baseline PIC16LC54A (vsPIC16LC54A-04E/P)
- PIC16C5X baseline heritage for legacy firmware reuse (vsPIC16LC558-04E/P)
Ghi chú thiết kế
PIC16LC554-04E/P uses One-Time Programmable (OTP) EPROM: the program memory can only be written once. Engineers must finalize and verify firmware on a windowed CERDIP variant (PIC16LC554-04/JW) or on a flash-based PIC16F630-I/P equivalent before committing to OTP for production. Mistakes on OTP parts result in scrap.
The PIC16LC554-04E/P accepts 3.0 V to 6.25 V on VDD (pin 14). For battery-powered designs, add a 100 nF decoupling capacitor close to VDD and a 10 uF bulk capacitor at the regulator output. The internal POR circuit holds the MCU in reset until VDD rises above the brown-out threshold - no external reset IC is required for most applications.
When using the 18-PDIP package, leave room around the IC for a programming clip or for hand-solder rework. The MCLR pin (pin 4) typically requires a 10 kohm pull-up to VDD; place this resistor within 5 mm of the pin to keep the reset line noise-free. If the external oscillator is used, keep traces from OSC1/OSC2 short and surround them with a ground guard ring to suppress EMI.
Thông tin tuân thủ
RoHS compliance and lead-free status per DigiKey product listing. REACH and conflict-minerals data not present in the verified web data and left as 'unknown'. AEC-Q100 not applicable for this baseline industrial/consumer-grade MCU.
