PIC16F18857-I/SP - 8-Bit 32MHz 56KB Flash XLP MCU | Microchip
N.º da peça: PIC16F18857-I/SP ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $2.95 | $2,95 |
| 10 | $2.65 | $26,50 |
| 100 | $2.38 | $238,00 |
| 500 | $2.1 | $1.050,00 |
| 1.000 | $1.89 | $1.890,00 |
PIC16F18857-I/SP Visão geral
An 8-bit microcontroller is a small computing processor built around an 8-bit data bus, widely used in embedded systems for sensor interfacing, control logic, and human-machine interface tasks. Within the semiconductor taxonomy, it sits under microcontroller -> microprocessor -> integrated circuit, and within Microchip's portfolio it belongs to the PIC16 mid-range family, recognized for deterministic performance and a mature toolchain (MPLAB X IDE, XC8 compiler).
Key features include CRC/SCAN hardware Cyclic Redundancy Check, Hardware Limit Timer (HLT), peripheral pin select (PPS), and rich analog integration including a 10-bit ADC with computation, multiple timers, and PWM outputs. The XLP technology delivers nanoWatt deep-sleep currents, making the PIC16F18857-I/SP suited to battery-powered and energy-harvesting designs that must wake, process, and return to sleep efficiently.
Typical applications include industrial sensor conditioning, IoT edge nodes, consumer appliance control, automotive body electronics (non-safety), instrumentation, and any low-power general-purpose MCU design that benefits from CIP for offloading tasks from the CPU. The CIP blocks run autonomously once configured, reducing code size and active-mode power.
When designing with this part, ensure the ICSP (In-Circuit Serial Programming) pins are accessible for production programming and debug. PPS must be remapped before use; default pin functions are not necessarily optimal for every application, so consult the I/O mapping chapter of the datasheet before finalizing PCB layout.
Alternativas drop-in para PIC16F18857-I/SP — 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 PIC16F18857-I/SP (mesmo formato e footprint) — diferindo em ADC, Package, MSL Level, Program Memory (Flash), Core Architecture.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16F18855-I/SP
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16F18856-I/SP
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$1.48 / unidade
Ver ficha técnica →PIC16F18877-I/SP
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16F18854-I/SP
✅ Drop-In✓ Em estoque
$1.35 / unidade
Ver ficha técnica →PIC16F18455-I/SP
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$1.62 / unidade
Ver ficha técnica →PIC16F18456-I/SP
✅ Drop-In✓ Em estoque
$1.07 / unidade
Ver ficha técnica →PIC16F18857-I/SP Classificações máximas e características elétricas
| Family | PIC® XLP™ 16F |
| Core | 8-bit PIC16 |
| Functional Safety | FuSa capable |
| Program Memory Size | 56 KB (32K x 14 words) Flash |
| RAM Size | 4 KB |
| EEPROM Size | 256 B |
| CPU Frequency (max) | 32 MHz |
| Encapsulamento | 28-SPDIP (SP) |
| Contagem de pinos | 28 |
| Tipo de montagem | Through-Hole |
| Temperatura de operação | -40C to +85C (Industrial, -I) |
| ADC | 10-bit |
| Core Independent Peripherals | Yes (CRC/SCAN, HLT) |
| Communication | UART, SPI, I2C |
| Status RoHS | Compliant |
| Nível MSL | 1 (unlimited) |
Configuração de pinos do PIC16F18857-I/SP
| Pino 1 | RA3/AN3/Vref+/CMP1+ — GPIO RA3 / ADC input / Vref+ |
| Pino 2 | RA2/AN2/CMP1- — GPIO RA2 / ADC input / comparator |
| Pino 3 | RA1/ICSPCLK — GPIO RA1 / ICSP clock |
| Pino 4 | RA0/ICSPDAT — GPIO RA0 / ICSP data |
| Pino 5 | RA7/OSC1/CLKIN — GPIO RA7 / oscillator input |
| Pino 6 | RA6/OSC2/CLKOUT — GPIO RA6 / oscillator output |
| Pino 7 | VDD — Power supply |
| Pino 8 | VSS — Ground |
| Pino 9 | RB7/ICSPDAT — GPIO RB7 / ICSP data |
| Pino 10 | RB6/ICSPCLK — GPIO RB6 / ICSP clock |
| Pino 11 | RB5 — GPIO RB5 |
| Pino 12 | RB4 — GPIO RB4 |
| Pino 13 | RB3 — GPIO RB3 |
| Pino 14 | RB2 — GPIO RB2 |
| Pino 15 | RB1 — GPIO RB1 |
| Pino 16 | RB0 — GPIO RB0 |
| Pino 17 | RC7 — GPIO RC7 |
| Pino 18 | RC6 — GPIO RC6 |
| Pino 19 | RC5 — GPIO RC5 |
| Pino 20 | RC4 — GPIO RC4 |
| Pino 21 | RC3 — GPIO RC3 |
| Pino 22 | RC2 — GPIO RC2 |
| Pino 23 | RC1 — GPIO RC1 |
| Pino 24 | RC0 — GPIO RC0 |
| Pino 25 | RE3/MCLR/Vpp — GPIO RE3 / master clear / programming voltage |
| Pino 26 | RA5 — GPIO RA5 |
| Pino 27 | RA4 — GPIO RA4 |
| Pino 28 | VSS — Ground |
Aplicações típicas
PIC16F18857-I/SP é adequado para 6 aplicaçãos: Industrial Sensor Conditioning and Control, IoT Edge Nodes and Smart-Sensor Hubs, Consumer Appliance Front Panels, Automotive Body Electronics (Non-Safety), Battery-Operated Handheld Instrumentation, Low-Power Energy Harvesting Controllers.
Industrial Sensor Conditioning and Control
The PIC16F18857-I/SP is well-suited to industrial sensor conditioning because of its 10-bit ADC with computation and Core Independent Peripherals that offload timing-critical tasks from the CPU. Its 32 MHz execution and 56 KB Flash handle filtering, calibration and PID logic on-board. Hardware Limit Timer and CRC/SCAN provide deterministic timing and memory integrity checks for control loops. XLP sleep modes allow battery-backed or line-powered sensor nodes to idle in nanoWatt sleep between measurement bursts.
Recomendado
IoT Edge Nodes and Smart-Sensor Hubs
The PIC16F18857-I/SP fits IoT edge roles because XLP nanoWatt sleep currents keep idle current low while the 32 MHz CPU and CIP blocks handle sensor fusion and protocol framing on wake. The part offers UART/SPI/I2C for radio or Wi-Fi module interfacing, ample 56 KB Flash for local intelligence, and 4 KB RAM for buffering telemetry packets. PPS (Peripheral Pin Select) allows flexible PCB routing of digital interfaces without re-spinning hardware.
Recomendado
Consumer Appliance Front Panels
The PIC16F18857-I/SP drives consumer appliance user interfaces where the 28-SPDIP package simplifies hand-rework and field service. PWM outputs control LED indicators, buzzers and small DC loads; the 10-bit ADC reads potentiometers or thermistors; Core Independent Peripherals generate exact timing for triac firing and zero-cross detection. With XLP sleep, standby current on powered-off units drops to nanoAmp levels, helping appliances meet energy regulations.
Recomendado
Automotive Body Electronics (Non-Safety)
The PIC16F18857-I/SP supports non-safety automotive body modules like interior lighting, mirror adjustment, seat controllers and HVAC controls, where its industrial temperature rating and ample peripheral set cover typical 12V vehicle loads. The functional-safety-capable silicon plus CRC/SCAN provide diagnostic hooks for OEMs implementing non-safety monitoring. Always pair with proper load drivers and TVS protection for automotive robustness.
Recomendado
Battery-Operated Handheld Instrumentation
The PIC16F18857-I/SP powers handheld instruments such as multimeters, data loggers and field sensors thanks to its XLP nanoWatt sleep modes and 32 MHz processing for ADC post-processing. The 28-SPDIP through-hole package withstands mechanical stress and is easy to hand-replace in field repair scenarios. CRC/SCAN detects firmware corruption or memory faults that could otherwise compromise measurement integrity.
Recomendado
Low-Power Energy Harvesting Controllers
The PIC16F18857-I/SP is ideal for energy-harvesting controllers managing vibration, thermal or solar micro-energy sources. XLP technology enables sub-microA sleep, and the part's fast wake-up allows it to harvest, process and return to deep sleep efficiently. Its 4 KB RAM and 56 KB Flash buffer sampled data before uplink; Core Independent Peripherals execute measurement loops while the CPU remains off.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16F18857-I/SP — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16F18855-I/SP | PIC16F18856-I/SP | PIC16F18877-I/SP | PIC16F18854-I/SP |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SPDIP | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same |
| Flash Size | 56 KB | 32 KB | 32 KB | 56 KB | 32 KB |
| RAM Size | 4 KB | 4 KB | 4 KB | 4 KB | 2 KB |
| CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B |
| ADC | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
| Core Independent Peripherals | Yes (CRC/SCAN, HLT) | Yes (CRC/SCAN, HLT) | Yes (CRC/SCAN, HLT) | Yes (CRC/SCAN, HLT) | Yes (reduced set) |
Principais diferenciais
- Largest Flash in family within 28-SPDIP footprint (vs PIC16F18855-I/SP)
- Hardware Limit Timer and CRC/SCAN CIPs (vs PIC16F18455-I/SP)
- Through-hole 28-SPDIP ease of development (vs PIC16F18857-I/SS)
Notas de projeto
The PIC16F18857-I/SP supports multiple XLP sleep modes that deliver nanoWatt quiescent current. Estimate (with no datasheet figure to confirm exactly) that sleep current for full RAM retention and WDT disabled is significantly lower than active current; engineers targeting deep-sleep battery life should disable all unused peripherals in firmware and configure unused pins as low-level outputs to minimize parasitic drain. Always place a 100 nF decoupling capacitor within 5 mm of VDD.
Place the ICSP programming header (or test pads) on the production board for firmware updates and field service, because the 28-SPDIP through-hole package of PIC16F18857-I/SP makes rework trivial. Per Microchip guidelines, an in-line resistor on MCLR is acceptable when the resistor is small enough to allow Vpp (programming voltage) to rise above Vih during programming. Decoupling must be tightest to the part; bulk capacitance typically comes from the regulator output.
When migrating from older PIC16 designs, the Peripheral Pin Select (PPS) registers on PIC16F18857-I/SP must be unlocked and remapped at startup or peripheral functions will not appear at their original pins. Configuration bits must also be set correctly for oscillator mode, watchdog, code protection, and brown-out reset; failure to set brown-out reset can cause silent corruption during power-up. Always consult configuration-word settings in the datasheet, not the older family reference manuals.
For long PCB traces driving high-speed SPI or I2C buses from the PIC16F18857-I/SP, use series resistors near the driver pins and verify rise times against the load's setup requirements. Estimated: at 32 MHz CPU with peripherals driven from Fosc/4 (~8 MHz), traces above 50 mm may need damping. For high-noise industrial environments, place the part inside a guard ring tied to ground on the bottom layer to improve ADC accuracy.
Informações de conformidade
RoHS compliant per Microchip product page; REACH, AEC-Q100, halogen-free, and conflict-minerals certifications are not confirmed in the verified web data and should be verified with Microchip documentation.
