PIC16F18856-I/SP - 8-Bit MCU, 28KB Flash, 32MHz XLP | Microchip
N.º de pieza: PIC16F18856-I/SP ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.47 | $2,47 |
| 10 | $2.2 | $22,00 |
| 100 | $1.86 | $186,00 |
| 500 | $1.65 | $825,00 |
| 1.000 | $1.48 | $1.480,00 |
PIC16F18856-I/SP Descripción general
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile data memory (RAM), EEPROM, and a rich set of peripherals including timers, communication interfaces, ADC/DAC channels and Core Independent Peripherals (CIP). Within the broader semiconductor taxonomy, an MCU sits inside the microcontroller hierarchy -> embedded processor -> semiconductor device. The PIC16F18856 specifically belongs to the PIC16F1885X/7X mid-range core 8-bit MCU family and is built around Microchip's enhanced mid-range CPU with a 14-bit instruction word.
Key features include eXtreme Low Power (XLP) technology with nanoWatt XLP sleep currents, a 10-bit ADC with computation (ADC2), a 5-bit DAC, up to four 16-bit timers, two USART modules, two SPI/I2C, a configurable Logic Cell (CLC), Complementary Waveform Generator (CWG), Numerically Controlled Oscillator (NCO) and Zero-Cross Detect (ZCD) peripheral. Functional Safety (FuSa) hardware includes the Hardware Limit Timer (HLT) and Windowed Watchdog Timer (WWDT) for IEC 60730 / Class B safety compliance in home appliance and industrial control designs.
Architecturally the device integrates a precision internal oscillator, a wide operating voltage range from 2.3V to 5.5V, CRC/SCAN memory protection, and Peripheral Pin Select (PPS) for flexible signal routing. The combination of CIPs allows complex control tasks to run without CPU intervention, reducing firmware complexity and power consumption simultaneously.
Typical applications include home appliance control (washing machines, dishwashers, induction cookers), IoT sensor nodes, battery-powered portable instruments, LED lighting controllers, and small motor-control loops. The wide voltage range and XLP sleep currents also suit energy-harvesting or remote sensor designs where average current budget is measured in microamps.
When designing with this part, pay attention to the 28-pin SPDIP allocation: I/O contention with the high-pin-count CIPs requires careful PPS mapping, and the I/O sink/source rating of 50 mA per pin / 200 mA per port must be respected when directly driving relays or LEDs without external drivers. Programming is supported by Microchip's MPLAB X IDE, XC8 compiler and PICkit™/Snap/ICD in-circuit debuggers, with the Functional Safety firmware documentation suite available separately.
Alternativas directas para PIC16F18856-I/SP — 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 PIC16F18856-I/SP (mismo factor de forma y huella) — difiere en ADC, MSL Level, Program Memory (Flash), Package, Communication.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC16F18855-I/SP
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
PIC16F18857-I/SP
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$1.89 / unidad
Ver hoja de datos →PIC16F18854-I/SP
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$1.35 / unidad
Ver hoja de datos →PIC16F18456-I/SP
✅ Sustitución directa✓ En stock
$1.07 / unidad
Ver hoja de datos →PIC16F18455-I/SP
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$1.62 / unidad
Ver hoja de datos →PIC16F18856-I/SP Valores máximos y características eléctricas
| Core | PIC16 enhanced mid-range 8-bit |
| Instruction Word | 14-bit |
| Program Memory (Flash) | 28 KB (16K x 14) |
| Data SRAM | 2 KB |
| EEPROM | 256 bytes |
| Max CPU Speed | 32 MHz |
| Operating Voltage Range | 2.3 V to 5.5 V |
| I/O Pins | 25 (on 28-SPDIP) |
| ADC | 10-bit ADC with Computation (ADC2) |
| DAC | 5-bit DAC |
| Timers | 4 x 16-bit / 2 x 8-bit |
| Communication | 2x USART, 2x SPI, 2x I2C |
| Core Independent Peripherals (CIP) | CLC, CWG, NCO, ZCD, HLT, WWDT |
| Functional Safety (FuSa) | Yes - IEC 60730 Class B ready |
| Low Power Mode (XLP) | nanoWatt XLP sleep |
| Encapsulado | 28-SPDIP (0.300 inch / 7.62 mm) |
| Tipo de montaje | Through-Hole (DIP) |
| Operating Temperature (Industrial -I) | -40C to +85C |
| Estado RoHS | Compliant |
Configuración de pines de PIC16F18856-I/SP
| Pin 1 | RA2/AN2 — Bidirectional I/O / analog input channel 2 |
| Pin 2 | RA3/AN3 — Bidirectional I/O / analog input channel 3 |
| Pin 3 | RA4/AN4 — Bidirectional I/O / analog input channel 4 |
| Pin 4 | RA5/MCLR — Bidirectional I/O / Master Clear (reset, active low) |
| Pin 5 | VDD — Positive supply voltage (2.3 V to 5.5 V) |
| Pin 6 | VSS — Ground reference |
| Pin 7 | RA0/AN0 — Bidirectional I/O / analog input channel 0 |
| Pin 8 | RA1/AN1 — Bidirectional I/O / analog input channel 1 |
| Pin 9 | RB0/INT — Bidirectional I/O / external interrupt |
| Pin 10 | RB1 — Bidirectional I/O |
| Pin 11 | RB2 — Bidirectional I/O |
| Pin 12 | RB3/PGM — Bidirectional I/O / ICSP programming clock |
| Pin 13 | RB4 — Bidirectional I/O |
| Pin 14 | RB5 — Bidirectional I/O |
| Pin 15 | RB6/PGC — Bidirectional I/O / ICSP clock |
| Pin 16 | RB7/PGD — Bidirectional I/O / ICSP data |
| Pin 17 | RC0 — Bidirectional I/O |
| Pin 18 | RC1 — Bidirectional I/O |
| Pin 19 | RC2 — Bidirectional I/O |
| Pin 20 | RC3 — Bidirectional I/O |
| Pin 21 | RC4 — Bidirectional I/O |
| Pin 22 | RC5 — Bidirectional I/O |
| Pin 23 | RC6/TX — Bidirectional I/O / USART TX |
| Pin 24 | RC7/RX — Bidirectional I/O / USART RX |
| Pin 25 | RE3 — Bidirectional I/O (input-only on /SP package) |
| Pin 26 | RD0 — Bidirectional I/O |
| Pin 27 | RD1 — Bidirectional I/O |
| Pin 28 | VSS — Ground reference (digital) |
Aplicaciones típicas
PIC16F18856-I/SP es adecuado para 6 aplicacións: Home Appliance Control (IEC 60730 Class B), IoT Sensor Nodes and Remote Monitoring, LED Lighting and Color-Mixing Controllers, Small Motor Control (BLDC / Stepper / Brushed DC), Industrial Sensor Hubs and Data Loggers, Automotive Body and Aftermarket Modules (Non-Safety).
Home Appliance Control (IEC 60730 Class B)
The PIC16F18856-I/SP is purpose-built for IEC 60730 / UL 60730 Class B appliances such as washing machines, dishwashers and induction cookers because the integrated Functional Safety (FuSa) peripherals - Hardware Limit Timer (HLT), Windowed Watchdog Timer (WWDT) and CRC/SCAN memory integrity block - let the firmware detect stuck faults on safety-relevant I/O without an external supervisor. With 28KB Flash and 2KB SRAM it has plenty of headroom for state machines, PID temperature loops, and user-interface handling. The 2.3V to 5.5V supply range supports both 3.3V sensor rails and 5V triac/relay drive stages, and the nanoWatt XLP sleep currents keep standby power below regulatory thresholds.
Recomendado
IoT Sensor Nodes and Remote Monitoring
In battery-powered IoT sensor nodes (temperature, humidity, occupancy, leak detection) the PIC16F18856-I/SP delivers the low average current needed for multi-year coin-cell life thanks to its nanoWatt XLP sleep mode (sub-1uA typical) and configurable peripherals that wake the CPU on a threshold event. The 10-bit ADC with computation (ADC2) oversamples the sensor directly, while the NCO and CLC run sensor-fusion math without CPU involvement. The 2KB RAM holds message buffers for LoRa/Sigfox/sub-GHz pre-processing before the radio wakes, and the 28-SPDIP package is convenient for hand-soldered prototypes on sensor breakouts.
Recomendado
LED Lighting and Color-Mixing Controllers
The Complementary Waveform Generator (CWG), Numerically Controlled Oscillator (NCO) and 16-bit PWM make the PIC16F18856-I/SP well suited for architectural and horticulture LED drivers where smooth dimming and precise color mixing are required. Each CWG channel can drive a high-side/low-side FET pair for buck or boost LED stages, while the PPS peripheral re-routes outputs to any I/O for flexible PCB routing. The 5-bit DAC and ADC2 close the loop on optical feedback or thermistor-based thermal derating. With 28KB Flash the firmware can store multiple CCT curves, BLE pairing state machines and DMX-512 frame parsers simultaneously.
Recomendado
Small Motor Control (BLDC / Stepper / Brushed DC)
For small motor control (BLDC fans, stepper positioning, brushed DC pumps) the PIC16F18856-I/SP combines four 16-bit timers for PWM generation, the CWG for synchronous complementary drive, ZCD for triac-style AC motor commutation and the ADC2 for back-EMF or current sensing in a single chip. The 32 MHz CPU handles space-vector or trapezoidal commutation plus PI speed control with comfortable margins, while the CIPs let the CLC generate dead-time and emergency brake signals without CPU intervention. 28-SPDIP through-hole packaging suits low-volume industrial modules and educational kits.
Recomendado
Industrial Sensor Hubs and Data Loggers
Industrial data loggers and multi-sensor hubs benefit from the PIC16F18856-I/SP's 10-bit ADC2 (up to 24 channels via mux), two USART and two SPI/I2C ports - enough to bridge RS-485 Modbus slaves, SPI NOR flash storage and I2C sensors over a single MCU. The 28KB Flash stores Modbus command parsers and SPI flash wear-levelling firmware, while 2KB RAM buffers data between acquisition and BLE/USB transmission. The Hardware Limit Timer (HLT) and WWDT add the deterministic fault recovery required for unattended industrial installations. Through-hole SPDIP also simplifies conformal-coated assemblies that need rework capability.
Recomendado
Automotive Body and Aftermarket Modules (Non-Safety)
While the industrial-grade PIC16F18856-I/SP is not AEC-Q100 qualified, it is widely used in aftermarket automotive body controllers (interior lighting, mirror adjust, auxiliary gauges) where the wide -40C to +85C operating range, 5V tolerance and 32 MHz speed are sufficient. The CWG and 16-bit PWMs drive LED strings and small DC motors, and the dual USART interfaces link to OBD-II or CAN transceivers. Engineers who later need full automotive qualification can migrate firmware to the AEC-Q100 PIC16F18856xxx line without rewriting the application layer.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC16F18856-I/SP — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC16F18855-I/SP | PIC16F18857-I/SP | PIC16F18854-I/SP | PIC16F18456-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 |
| Core | PIC16 8-bit, 32 MHz | PIC16 8-bit, 32 MHz | PIC16 8-bit, 32 MHz | PIC16 8-bit, 32 MHz | PIC16 8-bit, 32 MHz |
| Flash | 28 KB | 14 KB | 56 KB | 7 KB | 28 KB |
| RAM | 2 KB | 1 KB | 4 KB | 1 KB | 2 KB |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B |
| Functional Safety (FuSa) | Yes (HLT, WWDT, CRC/SCAN) | Yes (HLT, WWDT, CRC/SCAN) | Yes (HLT, WWDT, CRC/SCAN) | Yes (HLT, WWDT, CRC/SCAN) | Reduced (no HLT/WWDT) |
| ADC | 10-bit ADC2 | 10-bit ADC2 | 10-bit ADC2 | 10-bit ADC2 | 10-bit ADC2 |
Diferenciadores clave
- Integrated Functional Safety (FuSa) peripherals (frente a PIC16F18456-I/SP)
- Larger on-chip Flash for stack-heavy applications (frente a PIC16F18855-I/SP)
- Balanced memory size within the family (frente a PIC16F18857-I/SP)
- Through-hole SPDIP package for prototyping and hand assembly (frente a PIC16F18856-I/SS (SSOP-28))
Notas de diseño
Estimated: at VDD=5V and a typical active current of ~3 mA at 32 MHz, the PIC16F18856-I/SP draws about 0.5 mA/MHz; in Sleep with WWDT off the nanoWatt XLP mode drops current to sub-1 uA. For battery-powered nodes, gate radio and sensor power rails with the CLC or a high-side load switch so the MCU is the only always-on device. Place a 100 nF decoupling capacitor within 5 mm of the VDD pin and a 10 uF bulk capacitor at the regulator output to suppress BOR false triggers during inrush.
The 28-SPDIP package has a theta_JA of roughly 70 C/W in still air, so thermal management is rarely a concern for an MCU running below 30 mA. Estimated: at full peripheral activity drawing 10 mA from 5 V (50 mW dissipation) the junction temperature rises only ~3.5 C above ambient. For continuous heavy loads at elevated ambient (>60 C) verify the package dissipation against the Microchip thermal characteristic table and keep ceramic bypass capacitors close to VDD/VSS pairs.
Because this 28-SPDIP is a through-hole part, leave a small copper keep-out under the ICSP pins (RB6/PGC, RB7/PGD) so the PICkit / Snap header can clip on without shorting. Route the MCLR line (RA5/MCLR) with a 10 kOhm pull-up to VDD and place the 0.1 uF MCLR capacitor as close to the pin as the package allows; long MCLR traces pick up noise and trigger spurious resets in motor-drive environments. Keep analog traces (AN0-AN4) short and guarded by a digital ground island to maximize the ADC2 SNR.
Avoid the common mistake of using the internal HFINTOSC and then enabling the PLL without verifying the FOSC configuration bits: the default config may run the device at 1 MHz and the peripheral baud-rate dividers will silently produce wrong SPI/I2C timings. Also remember that on the 28-SPDIP pinout the RE3 pin is input-only - do not configure it as an output in PPS or the firmware will read as if the pin is stuck low. Finally, the CRC/SCAN peripheral must be enabled in the CONFIG words before its registers respond - writes to CRCCON are silently ignored otherwise.
Información de cumplimiento
RoHS and lead-free per Microchip product page; Functional Safety (IEC 60730 Class B) is supported by integrated HLT/WWDT/CRC peripherals but is not an automotive AEC-Q100 qualification. PIC16F18856-I/SP is the industrial-grade -40C to +85C variant; AEC-Q100 qualified PIC16F18856xxx automotive part numbers exist on request.
