PIC16LC554T-04I/SS - 4MHz 8-Bit OTP MCU, 12 I/O | Microchip
N.º de pieza: PIC16LC554T-04I/SS ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.04 | $2,04 |
| 10 | $1.83 | $18,30 |
| 100 | $1.62 | $162,00 |
| 500 | $1.42 | $710,00 |
| 1.000 | $1.24 | $1.240,00 |
PIC16LC554T-04I/SS Descripción general
What is a PIC16C microcontroller? The PIC16C family is Microchip's classic 8-bit Harvard-architecture RISC microcontroller lineage, characterized by separate program and data buses, a small instruction set, and OTP (One-Time Programmable) or UV-erasable program memory. PIC microcontrollers occupy the broader taxonomy of microcontrollers -> microprocessors -> semiconductor ICs -> embedded computing. They are widely deployed in applications requiring deterministic timing, low power consumption, and minimal external component count, ranging from appliance controls to industrial sensor interfaces.
Key features of the PIC16LC554T-04I/SS include 80 bytes of RAM (per Mouser listing), a 4 MHz maximum clock frequency, an operating range from -40°C to +85°C (industrial grade), and OTP program memory for one-time firmware programming. The 20-SSOP package enables compact PCB layouts, while the 12 I/O ports support peripheral interfacing including timers, comparators, and digital I/O.
The PIC16LC554T-04I/SS uses a RISC instruction set with a two-stage pipeline architecture, executing most instructions in a single clock cycle. The OTP memory architecture supports 512 × 14-bit word program storage, suitable for small-footprint firmware routines. The 8-bit accumulator-based core provides straightforward programming via Microchip's MPLAB X IDE and XC8 compiler toolchain, making it accessible for legacy design migration and new low-cost embedded designs.
Typical applications include industrial control systems, appliance controllers, sensor interface modules, low-power IoT edge nodes, automotive accessory controls, and embedded timing circuits. The device's 4 MHz clock and OTP memory make it particularly suited for cost-sensitive, high-volume production runs where firmware is finalized at manufacturing time.
When designing with this device, ensure proper decoupling with 0.1 µF ceramic capacitors near VDD, and verify that the OTP programming procedure follows Microchip's specified algorithm. The 20-SSOP package requires careful PCB layout to maintain signal integrity for the 12 I/O pins.
This page synthesizes distributor pricing, package-aware drop-in alternatives, and practical design notes not aggregated in the manufacturer datasheet alone, providing procurement and engineering teams a single-source reference for evaluating this legacy PIC16C OTP MCU.
Alternativas directas para PIC16LC554T-04I/SS — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PIC16LC554T-04I/SS (mismo factor de forma y huella) — difiere en Core Architecture, Package, Program Memory Size, Program Memory Type, Family.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC16LC554-04I/SS
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC16LC554T-04I/SO
✅ Sustitución directa✓ En stock
$1.78 / unidad
Ver hoja de datos →PIC16LC554T-04/SO
✅ Sustitución directa✓ En stock
$3.85 / unidad
Ver hoja de datos →PIC16F54T-I/SS
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$0.34 / unidad
Ver hoja de datos →PIC16C54CT-04I/SS
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
PIC16LC554T-04I/SS Valores máximos y características eléctricas
| Core Architecture | PIC 8-bit RISC |
| Family | PIC® 16C |
| Clock Speed (Max) | 4 MHz |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 896 B (512 × 14) |
| RAM Size | 80 B |
| I/O Ports | 12 |
| Tensión de alimentación | 3 V to 6.25 V |
| Temperatura de funcionamiento | -40°C to +85°C (Industrial) |
| Encapsulado | 20-SSOP |
| Package Dimensions | 5.30 mm body width (SSOP-20) |
| Tipo de montaje | Surface Mount |
| Ancho del bus de datos | 8-bit |
| Nivel MSL | 1 (Unlimited) |
Configuración de pines de PIC16LC554T-04I/SS
| Pin 1 | RA2 — Port A bit 2 (bidirectional I/O) |
| Pin 2 | RA3 — Port A bit 3 (bidirectional I/O) |
| Pin 3 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Pin 4 | MCLR/VPP — Master Clear reset / Programming voltage input |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RB0/INT — Port B bit 0 / External interrupt input |
| Pin 7 | RB1 — Port B bit 1 (bidirectional I/O) |
| Pin 8 | RB2 — Port B bit 2 (bidirectional I/O) |
| Pin 9 | RB3 — Port B bit 3 (bidirectional I/O) |
| Pin 10 | RB4 — Port B bit 4 (bidirectional I/O) |
| Pin 11 | RB5 — Port B bit 5 (bidirectional I/O) |
| Pin 12 | RB6 — Port B bit 6 (bidirectional I/O) |
| Pin 13 | RB7 — Port B bit 7 (bidirectional I/O) |
| Pin 14 | VSS — Ground reference |
| Pin 15 | OSC1/CLKIN — Oscillator crystal input / External clock input |
| Pin 16 | OSC2/CLKOUT — Oscillator crystal output / Clock output |
| Pin 17 | RC0 — Port C bit 0 (bidirectional I/O) |
| Pin 18 | RC1 — Port C bit 1 (bidirectional I/O) |
| Pin 19 | RC2 — Port C bit 2 (bidirectional I/O) |
| Pin 20 | VDD — Positive supply voltage (3V to 6.25V) |
Aplicaciones típicas
PIC16LC554T-04I/SS es adecuado para 6 aplicacións: Industrial Sensor Interface Module, Appliance Control Board, Low-Power IoT Edge Node, Automotive Accessory Controller, Embedded Timing Circuit, Hobbyist and Educational Platform.
Industrial Sensor Interface Module
The PIC16LC554T-04I/SS suits industrial sensor interface modules because its 8-bit RISC core and 12 I/O pins provide direct digital connectivity to multiple sensor channels at low cost. The 4 MHz clock and 896-byte OTP program memory handle simple polling loops, threshold checking, and alarm flag generation. The -40°C to +85°C industrial temperature range supports factory floor deployment, while the 3V to 6.25V supply range accepts battery or 5V-regulated rails. The PIC16LC554's deterministic single-cycle instruction execution ensures predictable sensor sampling intervals, critical for time-sensitive measurement loops. Compared to 32-bit Cortex-M alternatives, the PIC16C OTP architecture minimizes BOM cost for high-volume sensor node production.
Recomendado
Appliance Control Board
In white-goods appliance controllers such as washing machines, dishwashers, and microwave ovens, the PIC16LC554T-04I/SS drives relay outputs, reads keypad inputs, and sequences motor/timer functions. The 12 I/O ports directly map to typical appliance I/O: 6 outputs for relays, 6 inputs for keys/sensors. OTP memory locks the final firmware at production, preventing field tampering with safety-critical code. The 4 MHz clock provides sufficient throughput for 100 Hz timer resolution, and the SSOP-20 package fits compact PCB layouts. Per Microchip's appliance reference designs, the PIC16C5x family is a standard MCU for cost-optimized appliance main control boards.
Recomendado
Low-Power IoT Edge Node
The PIC16LC554T-04I/SS functions in battery-powered IoT edge nodes where its low-power CMOS core and OTP architecture deliver long battery life at minimal cost. The 'LC' low-voltage variant operates down to 3V from 2×AA cells, while the 4 MHz clock keeps active current under 2 mA. The 12 I/O ports connect to simple sensors (temperature, humidity, reed switches) via GPIO or comparator inputs. OTP memory prevents firmware extraction, providing IP protection for IoT deployments. While not wireless-capable on its own, the PIC16LC554 pairs with sub-GHz transceivers for complete edge-node solutions.
Recomendado
Automotive Accessory Controller
Automotive accessory modules such as lighting controllers, seat adjusters, and mirror controls deploy the PIC16LC554T-04I/SS for its 8-bit RISC simplicity and industrial temperature tolerance. The 12 I/O ports drive LED PWM dimming, motor direction H-bridges, and switch-matrix inputs. The 896-byte OTP program memory accommodates typical accessory firmware including debounce, PWM tables, and fault detection. Note: the standard PIC16LC554T-04I/SS is NOT AEC-Q100 qualified - automotive designs should verify AEC-Q100 status on the chosen variant or migrate to PIC16F equivalent with automotive qualification.
Recomendado
Embedded Timing Circuit
Standalone embedded timing circuits in test equipment, sequence controllers, and process timers use the PIC16LC554T-04I/SS for its 8-bit timer and interrupt architecture. The 4 MHz instruction rate with internal timers provides microsecond resolution timing suitable for pulse generation, event sequencing, and watchdog functions. The 12 I/O pins support multiple timer outputs and trigger inputs. OTP memory locks timing parameters at production, eliminating field recalibration concerns. The SSOP-20 package fits inside compact instrument enclosures.
Recomendado
Hobbyist and Educational Platform
The PIC16LC554T-04I/SS is a popular MCU for hobbyist projects, university embedded systems courses, and entry-level electronics education. The PIC16C5x architecture teaches fundamental 8-bit programming with a simple instruction set (33 instructions), OTP memory constraint awareness, and direct register manipulation. MPLAB X IDE and XC8 compiler are free downloads, and PICkit programmers are inexpensive. The SSOP-20 package can be breakout-boarded for breadboard use. Educational use cases include LED chasers, simple robots, motor controllers, and basic data loggers.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC16LC554T-04I/SS — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC16LC554-04I/SS | PIC16LC554T-04I/SO | PIC16LC554T-04/SO | PIC16F54T-I/SS | PIC16C54CT-04I/SS |
|---|---|---|---|---|---|---|
| Package | 20-SSOP | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Clock Speed (Max) | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Program Memory | 896 B OTP | 896 B OTP | 896 B OTP | 896 B OTP | 896 B Flash (reprogrammable) | 512 B OTP (-43%) |
| I/O Ports | 12 | 12 | 12 | 12 | 12 | 12 |
| Supply Voltage | 3 V to 6.25 V | 3 V to 6.25 V | 3 V to 6.25 V | 3 V to 6.25 V | 2 V to 5.5 V (wider) | 3 V to 6.25 V |
| Memory Type | OTP | OTP | OTP | OTP | Flash (key advantage) | OTP |
| Temperature Grade | Industrial (-40C to +85C) | Industrial | Industrial | Commercial (0C to +70C) | Industrial | Industrial |
Diferenciadores clave
- Same-family PIC16C5x pin compatibility across multiple MPNs (frente a PIC16C54CT-04I/SS)
- Flash reprogrammability not available in OTP variant (frente a PIC16F54T-I/SS)
- Low-voltage CMOS variant supports wider supply range (frente a PIC16C554 (standard CMOS variant))
Notas de diseño
Estimated: at 4 MHz clock and 5V supply, the PIC16LC554T-04I/SS typically draws approximately 1.7 mA active current per Microchip PIC16C5x family datasheet typical characteristics. Decouple VDD with a 0.1 µF ceramic capacitor placed within 5 mm of the VDD pin (pin 20). For battery applications, the PIC16LC variant's lower voltage range (down to 3V) enables direct 2×AA cell operation. Add bulk capacitance (10 µF) if the supply is shared with high-current peripherals like relays.
Route the OSC1/OSC2 traces (pins 15 and 16) symmetrically and keep them short to minimize EMI. For crystal operation, place the crystal and load capacitors within 5 mm of the OSC pins. The MCLR/VPP pin (pin 4) requires a 10 kΩ pull-up to VDD for normal operation; for ICSP programming, route this pin to the programming header. Avoid long parallel traces near RB0/INT (pin 6) to prevent spurious interrupts from capacitive coupling.
Critical: OTP memory is one-time programmable - a single failed programming attempt renders the device unusable. Per Microchip's PIC16C5x programming specification, verify VPP voltage (13V nominal), VDD voltage (5V nominal), and programming algorithm timing before each programming cycle. Always program a sample device first and verify functionality before production programming. The PIC16F54 Flash variant eliminates this risk for development; consider migrating to Flash for design iteration phases.
The 20-SSOP package (0.65 mm pitch) requires fine-pitch PCB land patterns - use ENIG surface finish for reliable soldering. Ensure solder mask dam width is at least 0.15 mm between pads to prevent solder bridging. For hand-soldered prototypes, use a fine-tip iron (≤1 mm) and lead-free SAC305 solder paste. Keep the SSOP-20 footprint compatible with both PIC16C5x (OTP) and PIC16F5x (Flash) devices to enable flexible migration during development.
Información de cumplimiento
RoHS compliance status not explicitly listed in verified distributor data - marked as 'unknown' per data authenticity rules. Lead-free per SSOP-20 modern packaging standard. Not AEC-Q100 qualified - automotive designs should verify AEC-Q100 status or select qualified variant.
