PIC16C71T-04/SO - 4MHz OTP 8-bit MCU w/ADC, SOIC-18 | Microchip
N.º da peça: PIC16C71T-04/SO ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $2.36 | $2,36 |
| 10 | $2.2 | $22,00 |
| 100 | $1.99 | $199,00 |
| 500 | $1.85 | $925,00 |
| 1.000 | $1.79 | $1.790,00 |
PIC16C71T-04/SO Visão geral
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, working RAM, peripheral set, and I/O on one die. The PIC16C71 sits in the PIC16CXX mid-range family, which uses a 14-bit instruction word and a 35-instruction RISC core; its hypernym hierarchy is microcontroller -> embedded processor -> digital IC -> semiconductor. The 'C' suffix indicates EPROM/OTP program memory (non-volatile, one-time programmable in windowless package, UV-erasable in CERDIP windowed variants).
Key differentiating specifications include: 1.75 KB EPROM program memory, 36 B RAM, 13 I/O, four-channel 8-bit ADC, Timer0 (8-bit timer/counter with 8-bit prescaler), brown-out reset (BOR), watchdog timer, and 4 MHz clock speed. With BOR active, the part guarantees a clean reset when VDD falls below the BOR threshold, eliminating corrupted startup states on brown-out events. The RISC core executes most instructions in one oscillator cycle, giving ~1 MIPS at 4 MHz.
Typical applications include industrial control loops, sensor signal conditioning, automotive body controllers (non-safety), low-cost consumer appliances, and educational/embedded learning kits. The on-chip ADC is well-matched to bridge-sensor, thermistor, and potentiometer front-ends without requiring an external ADC.
When designing with this part, ensure that the program memory is sized for OTP programming flow before committing to PCB layout. Engineers migrating to a Flash-based PIC should consider the PIC16F71 as a drop-in upgrade with same peripheral set and pinout.
Alternativas drop-in para PIC16C71T-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 PIC16C71T-04/SO (mesmo formato e footprint) — diferindo em Package, Timers, ADC, Program Memory Type, Core.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16C71-04/SO
✅ Drop-In✓ Em estoque
$3.95 / unidade
Ver ficha técnica →PIC16C71T-04I/SO
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16C71T-04E/SO
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
PIC16C711T-04I/SS
✅ Drop-In✓ Em estoque
$3.32 / unidade
Ver ficha técnica →PIC16C711T-04/SS
✅ Drop-In✓ Em estoque
$2.15 / unidade
Ver ficha técnica →PIC16C71T-04/SO Classificações máximas e características elétricas
| Core Architecture | 8-bit PIC RISC (PIC16CXX mid-range) |
| Program Memory | 1.75 KB EPROM (OTP) |
| RAM | 36 B |
| I/O Pins | 13 |
| Frequência máxima de clock | 4 MHz |
| Tensão de alimentação | 4.0 V to 5.5 V |
| ADC | 8-bit, 4-channel, integrated |
| Timers | Timer0 (8-bit timer/counter with 8-bit prescaler) |
| Brown-Out Reset (BOR) | Yes |
| Watchdog Timer | Yes |
| Package Type | SOIC-18 (SO), Tape and Reel |
| Terminal Form | GULL WING |
| Faixa de temperatura de operação | 0C to +70C (commercial) |
| ROM Type | OTP (One-Time Programmable) |
| Instruction Set | 35 instructions, 14-bit word |
| Lifecycle Stage | Active |
Configuração de pinos do PIC16C71T-04/SO
| Pino 1 | RA2/AN2 — PORTA bit 2 / analog input 2 (bidirectional digital I/O, ADC channel) |
| Pino 2 | RA3/AN3 — PORTA bit 3 / analog input 3 (bidirectional digital I/O, ADC channel) |
| Pino 3 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input (bidirectional digital I/O) |
| Pino 4 | MCLR/VPP — Master Clear reset (active low) / programming voltage input |
| Pino 5 | VSS — Ground reference |
| Pino 6 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Pino 7 | OSC2/CLKOUT — Oscillator crystal output / clock output (Fosc/4) |
| Pino 8 | NC — Not connected (per datasheet) |
| Pino 9 | VDD — Positive supply voltage (4.0 V to 5.5 V) |
| Pino 10 | NC — Not connected (per datasheet) |
| Pino 11 | RB0/INT — PORTB bit 0 / external interrupt input (bidirectional digital I/O) |
| Pino 12 | RB1 — PORTB bit 1 (bidirectional digital I/O) |
| Pino 13 | RB2 — PORTB bit 2 (bidirectional digital I/O) |
| Pino 14 | RB3 — PORTB bit 3 (bidirectional digital I/O) |
| Pino 15 | RB4 — PORTB bit 4 (bidirectional digital I/O) |
| Pino 16 | RB5 — PORTB bit 5 (bidirectional digital I/O) |
| Pino 17 | RB6 — PORTB bit 6 (bidirectional digital I/O) |
| Pino 18 | RB7 — PORTB bit 7 (bidirectional digital I/O) |
Aplicações típicas
PIC16C71T-04/SO é adequado para 6 aplicaçãos: Industrial Sensor Signal Conditioning, Consumer Appliance Control Boards, Automotive Body Electronics (Non-Safety), Educational Embedded Learning Boards, HVAC Thermostat Controllers, Battery-Powered Remote Sensor Nodes.
Industrial Sensor Signal Conditioning
The PIC16C71T-04/SO is well-suited to industrial sensor signal conditioning because of its integrated 4-channel 8-bit ADC, 36 B RAM, and 13 digital I/O. The ADC is a successive-approximation type capable of digitizing bridge-sensor, thermistor, and potentiometer front-ends directly without an external ADC chip, reducing BOM cost in multi-sensor installations. With 4 MHz clock delivering approximately 1 MIPS, the RISC core can sample all four channels and execute compensation firmware with adequate headroom. The on-chip BOR ensures clean reset on 24V industrial bus brown-out events. Typical use case: a process-control transmitter digitizing a thermocouple + pressure sensor pair and driving a 4-20 mA loop. Compared with an external ADC + microcontroller solution, this single-chip approach reduces PCB area by approximately 40 percent.
Recomendado
Consumer Appliance Control Boards
The PIC16C71T-04/SO serves consumer appliance control boards including washing-machine, dishwasher, and small-kitchen-appliance controllers because of its low-cost OTP memory, integrated ADC for temperature/level sensing, and 13 I/O sufficient to drive relays, LEDs, and switch matrices. The 1.75 KB OTP program memory fits typical appliance control state machines including debounced inputs, sensor monitoring, and actuator drivers. The commercial 0C to +70C temperature range covers indoor appliance environments. At 4 MHz the core executes button scan and timing routines with significant margin. Compared with discrete logic + op-amp solutions, the integrated MCU eliminates approximately 10-15 components per board.
Recomendado
Automotive Body Electronics (Non-Safety)
For automotive body electronics such as interior lighting controllers, seat-position memory, and mirror-adjust modules, the PIC16C71T-04/SO provides adequate performance and SOIC-18 footprint suitable for compact PCB integration. The 4-channel 8-bit ADC reads position-sensor potentiometers, while the 13 I/O drive relay coils and LED drivers. The on-chip BOR handles 12V battery brown-out events on cranking. Note: for safety-critical automotive applications, AEC-Q100 qualified parts such as PIC16F7xx family are required; this part is commercial-grade and suited only to non-safety body functions. At 4 MHz throughput, response latency to switch events is well within human-perceivable timing.
Recomendado
Educational Embedded Learning Boards
Educational embedded learning boards benefit from the PIC16C71T-04/SO's 8-bit RISC architecture, 35-instruction set, and SOIC-18 form factor which fits standard DIL-18 breakout adapters. The 1.75 KB OTP memory is sufficient for student projects including digital I/O control, ADC reading, and timer-based exercises. Per Microchip documentation, the 14-bit instruction word and single-cycle execution make it pedagogically transparent for teaching pipeline and accumulator concepts. The integrated ADC eliminates the need for separate ADC demonstration modules. Educational labs can demonstrate brown-out reset behavior using the on-chip BOR feature with controlled power-supply ramping.
Recomendado
HVAC Thermostat Controllers
The PIC16C71T-04/SO is appropriate for low-cost HVAC thermostat controllers, reading temperature sensors via the 4-channel 8-bit ADC and controlling HVAC relays through 13 digital I/O. The 36 B RAM accommodates setpoint, hysteresis, and filter state variables; 1.75 KB OTP supports week-day scheduling firmware. The BOR ensures clean reboot on power interruptions common in HVAC control transformers. At 4 MHz, the RISC core samples temperature, drives a character display, and manages relay sequencing with throughput margin. Compared with pure analog thermostat designs, the PIC16C71T-04/SO enables programmable scheduling and adaptive temperature control at comparable BOM cost.
Recomendado
Battery-Powered Remote Sensor Nodes
For battery-powered remote sensor nodes such as wireless thermostats, weather stations, and remote metering devices, the PIC16C71T-04/SO provides low operating current typical of PIC mid-range devices and a 4-channel 8-bit ADC sufficient to multiplex multiple sensor inputs. The BOR enables safe wake from low-voltage battery states without firmware corruption. With the watchdog timer and sleep modes (per Microchip mid-range architecture), the part can achieve extended battery life in duty-cycled operation. The SOIC-18 footprint suits small-form-factor remote nodes. Compared with higher-MIPS Cortex-M parts, the PIC16C71T-04/SO offers substantially lower sleep current for energy-harvesting applications.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16C71T-04/SO — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16C71-04/SO | PIC16C71T-04I/SO | PIC16C711T-04/SS |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SOIC-18 (SO), T/R | SOIC-18 (SO), tube | SOIC-18 (SO), T/R | SSOP-20 (NOT SOIC-18) |
| Program Memory | 1.75 KB EPROM (OTP) | 1.75 KB EPROM (OTP) | 1.75 KB EPROM (OTP) | 1.75 KB EPROM (OTP) |
| RAM | 36 B | 36 B | 36 B | 128 B (3.5x more) |
| Max Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| ADC | 4-ch, 8-bit | 4-ch, 8-bit | 4-ch, 8-bit | 4-ch, 8-bit |
| Temperature Range | 0C to +70C (commercial) | 0C to +70C (commercial) | -40C to +85C (industrial) | 0C to +70C (commercial) |
| Brown-Out Reset | Yes | Yes | Yes | Yes |
| I/O Pins | 13 | 13 | 13 | 13 |
| Approx. Unit Price (qty 1) | $2.36 | ~$2.30 | ~$3.20 | ~$3.50 |
Principais diferenciais
- Original integrated ADC in PIC mid-range family (vs PIC16F84A)
- OTP memory for low-cost high-volume production (vs PIC16F71)
- Compact 18-pin SOIC footprint with ADC (vs PIC16C711T-04/SS)
Notas de projeto
The PIC16C71T-04/SO operates from 4.0 V to 5.5 V on the VDD pin (9); ensure VSS (pin 5) is solidly tied to the ground plane. Estimated supply current at 4 MHz with all peripherals off is typically under 2 mA (per PIC16CXX mid-range datasheet). Add a 100 nF decoupling capacitor within 5 mm of VDD, plus a bulk 10 uF electrolytic on the board. The BOR threshold is factory-trimmed; designers should validate POR/BOR behavior across the application's full operating-temperature range.
Keep the OSC1/OSC2 traces short and shield them with a ground guard ring. Place the MCLR/VPP pull-up (typically 10 kohm) close to pin 4 and add a 100 nF decoupling cap on the MCLR line to filter noise that could trigger spurious resets. PORTA pins used for analog input should be guarded with ground to reduce ADC crosstalk; keep analog traces away from digital switching lines. The SOIC-18 thermal pad is not present; standard SOIC-18 PCB land patterns apply.
Do not exceed the absolute maximum VDD of 7 V (per Microchip datasheet) or apply voltage to any pin before VDD is stable. Always include a programming connector or ICSP header for OTP programming, since OTP memory cannot be re-programmed after UV erasure (windowless package). Do not use the PIC16C71T-04/SO in AEC-Q100 automotive safety applications - use a Flash-based automotive part instead. Do not assume all 13 I/O are simultaneously available - AN0-AN3 share pins with RA0-RA3 when ADC is enabled.
Informações de conformidade
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - the part is commercial-grade and not intended for automotive safety applications. Halogen-free status not explicitly listed in retrieved web data; consult Microchip for confirmation.
