PIC16LC73AT-04/SO - 8-Bit 4MHz MCU 7KB OTP 28-SOIC | Microchip
N.º da peça: PIC16LC73AT-04/SO ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $8.5 | $8,50 |
| 10 | $7.65 | $76,50 |
| 100 | $6.8 | $680,00 |
| 500 | $6.05 | $3.025,00 |
| 1.000 | $5.4 | $5.400,00 |
PIC16LC73AT-04/SO Visão geral
What is a PIC16C-series microcontroller? The PIC16C7X family (PIC16C73/74/76/77) is a class of low-cost, high-performance, CMOS, fully-static 8-bit microcontrollers with integrated analog-to-digital (A/D) converters, belonging to Microchip's PIC16CXX mid-range architecture. In the broader hierarchy, an MCU (microcontroller unit) is a complete computer-on-a-chip integrating CPU, memory, and peripherals; the PIC16C73 specifically targets embedded control applications needing on-chip ADC and capture/compare PWM, bridging simple 8-bit designs (PIC12/PIC16F baseline) and higher-performance 16-bit dsPIC/PIC24 families. The "L" prefix indicates a low-voltage variant supporting operation down to approximately 2.5 V, while the "T" suffix denotes tape-and-reel packaging for high-volume assembly.
Key features of the PIC16LC73AT-04/SO include a Harvard RISC architecture with 35 single-cycle instructions, a 14-bit instruction word, integrated 8-channel 8-bit ADC, two 8-bit and one 16-bit timer/counters, capture/compare/PWM (CCP) modules, a USART/SCI synchronous-serial port, and an operating voltage range of 2.5 V to 6.0 V. The device supports in-circuit serial programming (ICSP) for OTP devices and is designed for the commercial temperature grade.
Typical applications span industrial control, low-power sensor interfaces, automotive body electronics (non-safety), appliance control, and battery-powered instruments. The wide 2.5 V to 6.0 V supply range enables direct connection to 3.3 V regulated rails as well as legacy 5 V logic systems.
When designing with this MCU, verify the OTP programming window and toolchain compatibility with MPLAB-X IDE plus MPAS/XC8 compilers; choose the PIC16C73B or PIC16F73 flash variant if in-field firmware updates are required.
Alternativas drop-in para PIC16LC73AT-04/SO — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC16LC73AT-04/SO (mesmo formato e footprint) — diferindo em Package, Operating Temperature, Program Memory Size, Program Memory Type, Core Architecture.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16C73A-04/SO
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
PIC16LC73BT-04/SO
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$7.1 / unidade
Ver ficha técnica →PIC16LC73A-04I/SO
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$4.19 / unidade
Ver ficha técnica →PIC16C73B-04/SO
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$4.65 / unidade
Ver ficha técnica →PIC16C73A-04I/SO
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$4.78 / unidade
Ver ficha técnica →PIC16LC73AT-04/SO Classificações máximas e características elétricas
| Manufacturer | Microchip Technology |
| Series | PIC16C7X (PIC16C73A) |
| Core Processor | PIC 8-bit RISC |
| Core Size | 8-bit |
| Frequência máxima de clock | 4 MHz |
| Program Memory Size | 7 KB (4K x 14) OTP |
| Program Memory Type | OTP (One-Time-Programmable) |
| RAM Size | 192 x 8 bytes |
| Number of I/O Pins | 22 |
| Supply Voltage Range | 2.5 V to 6.0 V |
| Operating Temperature Grade | Commercial (0C to +70C) |
| Encapsulamento | 28-SOIC (7.50 mm body / 0.295 in width), gull-wing |
| Tipo de montagem | Surface Mount |
| A/D Converter | 8-channel, 8-bit integrated |
| Timers | Timer0 (8-bit), Timer1 (16-bit), Timer2 (8-bit) |
| Peripherals | Brown-out Detect, Watchdog Timer, USART/SCI, CCP, PWM |
| Instruction Set | 35 single-cycle instructions, 14-bit instruction word |
| Connectivity | I2C, SPI, UART/USART |
| Oscillator Type | External |
| Data Converters | A/D 8x8b |
| Packaging Code (per MOUSER/MOST) | 28SOIC (Tape & Reel, 'T' suffix) |
Configuração de pinos do PIC16LC73AT-04/SO
| Pino 1 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| Pino 2 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| Pino 3 | RA2/AN2/VREF- — Digital I/O / Analog input channel 2 / ADC negative voltage reference |
| Pino 4 | RA3/AN3/VREF+ — Digital I/O / Analog input channel 3 / ADC positive voltage reference |
| Pino 5 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| Pino 6 | RA5/SS/AN4 — Digital I/O / SPI slave select / Analog input channel 4 |
| Pino 7 | OSC1/CLKIN — External oscillator input / external clock input |
| Pino 8 | OSC2/CLKOUT — External oscillator output / clock output |
| Pino 9 | RC0/T1OSO/T1CKI — Digital I/O / Timer1 oscillator output / Timer1 clock input |
| Pino 10 | RC1/T1OSI/CCP2A — Digital I/O / Timer1 oscillator input / CCP2 alternate |
| Pino 11 | RC2/CCP1 — Digital I/O / CCP1 PWM output |
| Pino 12 | RC3/SCK/SCL — Digital I/O / SPI clock / I2C clock |
| Pino 13 | RC4/SDI/SDA — Digital I/O / SPI data in / I2C data |
| Pino 14 | RC5/SDO — Digital I/O / SPI data out |
| Pino 15 | RC6/TX/CK — Digital I/O / USART TX / USART synchronous clock |
| Pino 16 | RC7/RX/DT — Digital I/O / USART RX / USART synchronous data |
| Pino 17 | VSS — Ground reference |
| Pino 18 | VDD — Positive supply voltage (2.5 V to 6.0 V) |
| Pino 19 | RB0/INT — Digital I/O / External interrupt input |
| Pino 20 | RB1 — Digital I/O |
| Pino 21 | RB2 — Digital I/O |
| Pino 22 | RB3/PGM — Digital I/O / Low-voltage ICSP programming input |
| Pino 23 | RB4 — Digital I/O / interrupt-on-change |
| Pino 24 | RB5 — Digital I/O / interrupt-on-change |
| Pino 25 | RB6/PGC — Digital I/O / In-circuit serial programming clock |
| Pino 26 | RB7/PGD — Digital I/O / In-circuit serial programming data |
| Pino 27 | MCLR/VPP — Master clear reset input (active low) / programming voltage input |
| Pino 28 | NC — Not connected (per datasheet) |
Aplicações típicas
PIC16LC73AT-04/SO é adequado para 7 aplicaçãos: Industrial Control and Sensor Interface, Appliance Control (White Goods), Automotive Body Electronics (Non-Safety), Battery-Powered Instrumentation, Consumer Electronics User Interface Controllers, Hobbyist and Educational Embedded Development, Legacy Embedded System Maintenance.
Industrial Control and Sensor Interface
The PIC16LC73AT-04/SO suits industrial sensor interfaces thanks to its 8-channel 8-bit ADC integrated on-chip, 22 digital I/O pins, and 2.5 V to 6.0 V supply range that tolerates long analog signal runs and noisy 24 V-derived rails. With 4 MHz CPU clock and 35 single-cycle instructions, the MCU executes proportional-integral control loops at typical 1 kHz servo rates while leaving headroom for housekeeping tasks. The CCP/PWM module supports brushed DC motor drive up to modest power levels, and the watchdog timer plus the wide operating voltage improve field reliability in industrial environments. Pin-compatible with the PIC16F73A Flash variant, this part fits fixed-logic production runs where firmware is fully validated and no in-field updates are required.
Recomendado
Appliance Control (White Goods)
The PIC16LC73AT-04/SO is widely used in appliance controls like washing machines, dishwashers, microwave ovens, and HVAC blower controllers. Its 22 I/O pins can directly drive triac opto-isolators, relay coils, LED indicators, and seven-segment displays without external glue logic. The integrated USART/SPI/I2C peripherals accept commands from user-interface keypads and main controller boards, while the integrated 8-bit ADC reads temperature, humidity, and current sensors for closed-loop regulation. The 7 KB OTP program memory holds complete appliance state machines with comfortable firmware margin, and the commercial temperature grade covers indoor appliance environments. Pin-compatibility with the Flash-based PIC16F73A enables a single PCB layout across multiple SKUs.
Recomendado
Automotive Body Electronics (Non-Safety)
For non-safety automotive body electronics such as seat controllers, mirror adjusters, interior lighting, and accessory modules, the PIC16LC73AT-04/SO provides the PIC16C7X mid-range 8-bit MCU family robustness with 22 I/O and an integrated 8-bit ADC. The wide 2.5 V to 6.0 V supply range tolerates 12 V automotive battery cranking transients when paired with proper supply conditioning. Per Microchip automotive-grade guidance, however, AEC-Q100 qualified parts (e.g., PIC16F73A-I/SO) are required for safety-relevant systems; this OTP variant suits non-safety body ECUs where cost is paramount and firmware is locked. Brown-out detect and watchdog timer provide basic automotive transient resilience.
Recomendado
Battery-Powered Instrumentation
The PIC16LC73AT-04/SO operates down to 2.5 V VDD, which enables direct connection to two AA cells in series (2.4 V to 3.2 V over discharge) or single-cell Li-coin/Li-ion sources. Combined with 4 MHz maximum clock, the MCU draws relatively low active current and is suitable for portable handheld instruments such as digital calipers, multimeter accessories, environmental loggers, and medical monitoring peripherals. The integrated 8-channel 8-bit ADC reads sensor inputs without external conversion ICs, and the USART/SPI peripherals stream data to a host or to external EEPROM for data logging. Pin-compatibility with PIC16F73 enables a single PCB design that scales from low-cost OTP to Flash-equipped variants.
Recomendado
Consumer Electronics User Interface Controllers
The PIC16LC73AT-04/SO works as a user-interface coprocessor in consumer electronics such as remote controls, audio mixer panels, and kitchen-scale/measurement devices. The 22 digital I/O pins directly drive LED segment displays, button-matrix keypads, and rotary encoders with minimal external components. The integrated I2C/SPI master interfaces let the PIC16LC73AT-04/SO communicate with host SoCs, audio codecs, and EEPROM memory, offloading UI state from the main processor. The 192-byte RAM and 7 KB OTP memory handle typical menu/display state machines comfortably, and the 4 MHz RISC core executes button-debounce and display-multiplex routines with substantial CPU margin. Pin-compatibility with the PIC16F73 keeps BOM flexibility for future firmware revisions.
Recomendado
Hobbyist and Educational Embedded Development
The PIC16LC73AT-04/SO remains relevant for teaching 8-bit embedded fundamentals in university curricula and hobbyist projects that mirror industrial designs. The PIC16C7X mid-range architecture exposes students to integrated ADC, USART, and CCP/PWM peripherals while keeping instruction-set complexity low (35 instructions). The ICSP programming interface and MPLAB-X IDE plus MPAS/XC8 compilers let beginners program the OTP device using the same toolchain as modern PIC microcontrollers. The 28-SOIC package is breadboard-compatible via SOIC-to-DIP adapters and through-hole breakout boards, simplifying classroom lab use. Pin-compatibility with the PIC16F73A Flash variant lets learners graduate to Flash-based designs without re-wiring breadboards.
Recomendado
Legacy Embedded System Maintenance
The PIC16LC73AT-04/SO serves maintenance and repair of legacy industrial and commercial equipment whose original PIC16C7X design is still in service. With Microchip end-of-life notification in the obsolete lifecycle, this part is reserved for replacing failed units where firmware compatibility is mandatory and re-validation cost is prohibitive. Distributor inventory and authorized aftermarket channels continue to supply these parts for legacy support. Pin-compatibility with the Flash-based PIC16F73 lets repair shops migrate only the failed units, not the entire fleet, preserving the original firmware baseline. The 28-SOIC package is identical across the OTP and Flash variants, ensuring mechanical fit in legacy enclosures.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16LC73AT-04/SO — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16C73A-04/SO | PIC16LC73BT-04/SO | PIC16LC73A-04I/SO | PIC16C73B-04/SO | PIC16C73A-04I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (7.50 mm) | 28-SOIC (same) | 28-SOIC (same) | 28-SOIC (same) | 28-SOIC (same) | 28-SOIC (same) |
| Core | 8-bit PIC RISC | 8-bit PIC RISC | 8-bit PIC RISC | 8-bit PIC RISC | 8-bit PIC RISC | 8-bit PIC RISC |
| Maximum Clock | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Program Memory | 7 KB (4K x 14) OTP | 7 KB (4K x 14) OTP | 7 KB (4K x 14) OTP | 7 KB (4K x 14) OTP | 7 KB (4K x 14) OTP | 7 KB (4K x 14) OTP |
| RAM | 192 B | 192 B | 192 B | 192 B | 192 B | 192 B |
| Supply Voltage Range | 2.5 V to 6.0 V | 4.5 V to 5.5 V | 2.5 V to 6.0 V | 2.5 V to 6.0 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V |
| Temperature Grade | Commercial (0C to +70C) | Commercial (0C to +70C) | Commercial (0C to +70C) | Industrial (-40C to +85C) | Commercial (0C to +70C) | Industrial (-40C to +85C) |
| I/O Pins | 22 | 22 | 22 | 22 | 22 | 22 |
| ADC | 8 ch x 8-bit | 8 ch x 8-bit | 8 ch x 8-bit | 8 ch x 8-bit | 8 ch x 8-bit | 8 ch x 8-bit |
Principais diferenciais
- Wide low-voltage supply range 2.5 V to 6.0 V (vs PIC16C73A-04/SO)
- Industrial temperature grade option via /I suffix (vs PIC16LC73AT-04/SO)
- Silicon revision B with errata fixes (vs PIC16LC73AT-04/SO)
- Tape-and-reel packaging for high-volume assembly (vs PIC16LC73A-04/SO)
Notas de projeto
Estimated: VDD decoupling uses a 100 nF ceramic cap placed within 5 mm of the VDD pin (pin 18) with an additional 10 uF bulk electrolytic at the regulator output; the VSS pin (pin 17) requires a low-impedance ground return. Brown-out detect (BOD) is recommended enabled in the configuration word for 2.5 V to 6.0 V supply variants to prevent code execution outside the specified VDD range. Per Microchip PIC16C73A datasheet, operation below 3.0 V requires clock frequency derating to maintain DC characteristics.
Place a 1 kΩ to 10 kΩ pull-up resistor on MCLR/VPP (pin 27) for normal operation; the ICSP programmer drives this pin during programming. For ICSP programming, isolate the MCLR/VPP line, RB6/PGC (pin 25), and RB7/PGD (pin 26) from any pull-up or load that exceeds 10 kΩ to prevent programming interference. Per Microchip ICSP specification, the PGC/PGD traces should be kept short and isolated from high-speed signals. The 28-SOIC package has a 7.50 mm body width, leaving 0.65 mm pin pitch for standard SO-28 PCB footprints.
PIC16LC73AT-04/SO uses One-Time-Programmable (OTP) memory that cannot be erased; any firmware bug is permanent in production silicon. Per Microchip applied note, always validate firmware on a Flash-based PIC16F73A or PIC16C73B emulator before committing OTP production parts. The 'L' low-voltage variant limits oscillator frequency at lower VDD; consult the AC characteristics table for the actual frequency-derating curve below 3.0 V. Do not exceed 6.0 V on VDD as the absolute maximum rating, or risk latch-up and permanent damage.
Estimated: at 4 MHz and 5.0 V supply, PIC16LC73AT-04/SO active current is approximately 5 mA typical (per Microchip PIC16C73A datasheet DC characteristics), giving power dissipation of 25 mW. The 28-SOIC package thermal resistance theta_JA is approximately 70 C/W on a standard JEDEC 2-layer test board, yielding a junction temperature rise of only 1.75 C above ambient. No heatsink or thermal management is required for normal operation; however, OTP programming can draw additional programming current that should not exceed the ICSP specification limits.
Route the external oscillator (pins 7 OSC1/CLKIN and 8 OSC2/CLKOUT) traces as short and symmetric as possible, with a ground guard ring, to minimize EMI susceptibility. Place the crystal or ceramic resonator within 5 mm of the OSC pins and add load capacitors per the resonator specification. The analog inputs AN0-AN7 share package pins with digital I/O; when ADC readings are noisy, insert a 1 nF to 10 nF RC filter on the analog pin and ensure the digital trace does not pass under the analog trace to avoid coupling.
Informações de conformidade
Lifecycle status is obsolete per Microchip product change notifications. RoHS compliance, REACH status, lead-free, halogen-free, and conflict-mineral declarations were not returned in the verified distributor data and are marked as unknown pending manufacturer documentation. AEC-Q100 is not applicable to commercial-grade OTP variants; for automotive safety applications choose AEC-Q100-qualified PIC16F73A-I/SO or equivalent.
