PIC16LC54AT-04/SO - 4MHz 8-Bit OTP MCU 768B 18-SOIC | Microchip
N.º da peça: PIC16LC54AT-04/SO ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $2.45 | $2,45 |
| 10 | $2.18 | $21,80 |
| 100 | $1.92 | $192,00 |
| 500 | $1.68 | $840,00 |
| 1.000 | $1.45 | $1.450,00 |
PIC16LC54AT-04/SO Visão geral
A PIC microcontroller (Peripheral Interface Controller) is a family of Harvard-architecture microcontrollers built around a separate program-memory and data-memory bus. PIC MCUs integrate CPU core, program memory, RAM, and peripherals on a single die, and the PIC16C5x sub-family represents the original baseline 8-bit OTP/EPROM PIC architecture - the ancestor of today's much larger PIC10/12/16/18 families. In the broader taxonomy this device belongs to: microcontroller -> 8-bit MCU -> CMOS MCU -> embedded controller -> semiconductor IC.
Key features of the PIC16LC54AT-04/SO include 12 I/O pins, a two-level deep hardware stack, direct/indirect/relative addressing modes for both data and instructions, and an 8-bit real-time clock/counter (TMR0) with an 8-bit programmable prescaler. Operating supply voltage spans 3.0 V to 6.25 V (the "LC" suffix denotes the extended low-voltage CMOS variant versus the standard PIC16C54A). The fully static design allows clock frequencies to be arbitrarily reduced, and the part supports power-saving SLEEP mode with a watchdog timer for reliable recovery.
The device is fabricated using CMOS EPROM technology and supports in-system programming via the OTP memory array. Its 12-bit instruction word and orthogonal instruction set deliver code density approximately 2:1 better than competing 8-bit MCUs in the same price category. The wide operating voltage window makes the LC variant suitable for battery-powered and 5 V mixed-signal designs.
Typical applications include low-cost consumer appliances, automotive sub-system controllers, intelligent sensors, industrial control logic, IR remote-control transmitters, and small appliance timing/sequencing functions where the OTP memory model and 4 MHz clock are sufficient. The PIC16LC54A-04I/SO is the industrial-temperature-range (-40 C to +85 C) sibling; the PIC16LC54A-04E/SO is the extended-temperature variant.
When designing with this part, designers must respect the 4 MHz maximum clock and plan instruction-cycle budgets accordingly (one instruction = 4 clock cycles, so 1 MIPS at 4 MHz). The two-level hardware stack limits call depth to two nested subroutines - all but the most trivial firmware must use iterative coding or status-flag tricks to overcome this constraint.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the standalone manufacturer datasheet.
Alternativas drop-in para PIC16LC54AT-04/SO — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16LC54A-04/SO
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16LC54A-04I/SO
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16LC54A-04E/SO
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16LC54AT-04/SO Classificações máximas e características elétricas
| Core Processor | PIC |
| Core Size | 8-Bit |
| Series | PIC 16C |
| Frequência máxima de clock | 4 MHz |
| Program Memory Size | 768 B (512 x 12) |
| Program Memory Type | OTP (One-Time Programmable) |
| RAM Size | 25 x 8 B |
| Number of I/O Pins | 12 |
| Supply Voltage Range | 3 V to 6.25 V |
| Faixa de temperatura de operação | -40 C to +85 C |
| Encapsulamento / Caixa | 18-SOIC (0.295", 7.50 mm Width) |
| Tipo de montagem | Surface Mount |
| Instruction Set Width | 12-bit |
| Data Path Width | 8-bit |
| Hardware Stack Depth | 2 levels |
| Timers | 1 x 8-bit (TMR0 with prescaler) |
| Oscillator Type | External |
Configuração de pinos do PIC16LC54AT-04/SO
| Pino 1 | RA2 — PORTA bit 2 (bidirectional I/O) |
| Pino 2 | RA3 — PORTA bit 3 (bidirectional I/O) |
| Pino 3 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pino 4 | MCLR — Master Clear (active-low reset, must be tied to VDD) |
| Pino 5 | VSS — Ground reference |
| Pino 6 | RB0/INT — PORTB bit 0 / external interrupt input |
| Pino 7 | RB1 — PORTB bit 1 (bidirectional I/O) |
| Pino 8 | RB2 — PORTB bit 2 (bidirectional I/O) |
| Pino 9 | RB3 — PORTB bit 3 (bidirectional I/O) |
| Pino 10 | RB4 — PORTB bit 4 (bidirectional I/O) |
| Pino 11 | RB5 — PORTB bit 5 (bidirectional I/O) |
| Pino 12 | RB6 — PORTB bit 6 (bidirectional I/O) |
| Pino 13 | RB7 — PORTB bit 7 (bidirectional I/O) |
| Pino 14 | VDD — Positive supply (3.0 V to 6.25 V) |
| Pino 15 | OSC2/CLKOUT — Oscillator output / clock-out |
| Pino 16 | OSC1/CLKIN — Oscillator input / external clock in |
| Pino 17 | RA0 — PORTA bit 0 (bidirectional I/O) |
| Pino 18 | RA1 — PORTA bit 1 (bidirectional I/O) |
Aplicações típicas
PIC16LC54AT-04/SO é adequado para 6 aplicaçãos: Low-Cost Consumer Appliance Controller, IR Remote Control Transmitter, Industrial Sensor Signal Conditioning, Automotive Cabin Sub-System Controller, Smart Battery Charger Controller, Security Keypad / Access Reader.
Low-Cost Consumer Appliance Controller
The PIC16LC54AT-04/SO fits low-cost consumer appliances (toasters, coffee makers, hair dryers, fans) because its 4 MHz 1 MIPS throughput, 12 I/O pins and 3.0-6.25 V supply comfortably drive relay coils, triac gates, and 7-segment LED displays without external glue logic. With 768 B OTP and 25 B RAM the device hosts compact state-machine firmware for timing, sequencing, and button-debounce tasks, while the CMOS core keeps idle SLEEP current in the micro-amp range for energy-star standby budgets.
Recomendado
IR Remote Control Transmitter
The PIC16LC54AT-04/SO is widely used in 38 kHz / 40 kHz IR remote-control transmitters because its TMR0 timer with the 8-bit programmable prescaler easily generates the carrier frequency in software, and the 12-bit PIC16C5x instruction set packs NEC, RC5 and Sony protocols into 768 B of OTP memory. The wide 3.0-6.25 V supply lets the MCU run directly from two AAA cells, and the CMOS SLEEP mode with watchdog wake keeps idle battery drain under 5 uA for multi-year shelf life.
Recomendado
Industrial Sensor Signal Conditioning
The PIC16LC54AT-04/SO is used as a low-cost intelligent front-end for industrial sensors (temperature, humidity, level switches) where it digitizes analog inputs via its I/O pins with on-chip comparator support, applies linearization, and drives 4-20 mA or RS-485 line drivers. Its 4 MHz performance is sufficient for 100 Hz update rates, the 12 I/O pins handle both the sensor mux and the line interface, and the extended voltage range tolerates noisy 24 V industrial rails with simple resistor dividers.
Recomendado
Automotive Cabin Sub-System Controller
The PIC16LC54AT-04/SO (and its PIC16LC54A-04I/SO industrial-temp sibling) appears in automotive cabin sub-systems such as seat-controller switches, mirror-position memory, HVAC mode selectors, and interior lighting timers. Its CMOS design tolerates the noisy 12 V automotive supply via simple RC filtering, the 12 I/O pins read multi-position switches and drive LED indicators or small relays, and OTP memory locks the calibration so that warranty-station field returns cannot accidentally erase the trim values.
Recomendado
Smart Battery Charger Controller
The PIC16LC54AT-04/SO is suited to small NiMH / Li-ion charger controllers in cordless phones, power tools, and toy applications because its 3.0-6.25 V supply matches single-cell Li-ion packs and the 1 MIPS throughput is more than enough for the dV/dt charge-termination algorithm and LED status indication. TMR0 generates the charge-timer base, the 2-level stack is acceptable for the linear state-machine firmware, and SLEEP mode during idle extends standby time without burdening the battery.
Recomendado
Security Keypad / Access Reader
The PIC16LC54AT-04/SO powers low-cost security keypads and RFID-style access readers that read a 4x3 or 4x4 matrix keypad, debounce in software, compare a stored PIN in OTP, and drive a relay or buzzer on match. With 12 I/O the device directly scans a 4x3 matrix with one spare I/O for the relay; with 768 B OTP there is room for 8-character PIN storage plus 50-byte PIN-change routine; CMOS SLEEP plus the watchdog timer keeps standby current low enough for battery-backed operation.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16LC54AT-04/SO — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16LC54A-04/SO | PIC16LC54A-04I/SO | PIC16LC54A-04E/SO |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC | 18-SOIC - same | 18-SOIC - same | 18-SOIC - same |
| Core / Architecture | PIC 8-bit, 12-bit instructions | PIC 8-bit, 12-bit instructions | PIC 8-bit, 12-bit instructions | PIC 8-bit, 12-bit instructions |
| Max Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Program Memory | 768 B OTP (512 x 12) | 768 B OTP (512 x 12) | 768 B OTP (512 x 12) | 768 B OTP (512 x 12) |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C (industrial) | -40 C to +125 C (extended) |
| Number of I/O Pins | 12 | 12 | 12 | 12 |
| Packaging Form | Tape & Reel (T-suffix) | Tube (no T-suffix) | Tube or T&R by sub-suffix | Tube or T&R by sub-suffix |
Principais diferenciais
- Lowest-cost OTP PIC16C5X member in 18-SOIC (vs PIC16LC54A-04/SO (tube pack))
- Industrial temperature range as standard (vs PIC16LC54A-04E/SO)
- PIC16C5X heritage vs PIC16F Flash families (vs PIC16F54-I/SO)
Notas de projeto
Estimated: at VDD = 5.0 V, the PIC16LC54AT-04/SO draws approximately 2 mA active at 4 MHz and under 5 uA in SLEEP mode. Add a 100 nF decoupling capacitor within 5 mm of the VDD pin (pin 14) and a 10 uF bulk capacitor at the board supply input. MCLR (pin 4) must be tied to VDD through a 10 kohm resistor with a 100 nF cap to ground for clean power-on reset.
The PIC16C5X hardware stack is only 2 levels deep - subroutines deeper than one nested call will corrupt the return address. All production firmware must be coded iteratively or use a software-emulated stack in RAM. Also note that RA4 on PIC16C5X is an open-drain output; if driving a LED or external pull-up load, add an external pull-up resistor of 4.7 kohm to 10 kohm.
Place the 18-SOIC decoupling cap (100 nF X7R) within 5 mm of VDD pin 14. If using an external crystal or resonator, route the OSC1/OSC2 traces as short as possible (under 10 mm) and keep them away from switching traces to avoid injecting clock noise into adjacent analog sections. For high-noise industrial environments add a 100 ohm ferrite bead on the VDD rail feeding the MCU.
Informações de conformidade
RoHS and REACH status not explicitly stated in the verified web data; lead-free is consistent with the Microchip packaging label. AEC-Q100 is not applicable for this non-automotive-qualified OTP MCU.
