PIC16LF18855T-I/SS - 8-Bit 32MHz 14KB Flash XLP MCU | Microchip
N.º de pieza: PIC16LF18855T-I/SS ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.1 | $2,10 |
| 10 | $1.95 | $19,50 |
| 100 | $1.79 | $179,00 |
| 500 | $1.62 | $810,00 |
| 1.000 | $1.45 | $1.450,00 |
PIC16LF18855T-I/SS Descripción general
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path and a RISC instruction set. Within the broader hierarchy, the PIC16LF18855 sits as: PIC16 MCU -> 8-bit PIC microcontroller -> microcontroller -> embedded processor -> semiconductor. The PIC16 family is positioned between Microchip's PIC10/PIC12 baseline parts and the PIC18/PIC24 high-performance tiers, making it a workhorse class for cost-sensitive, low-power applications.
Key features include 24-channel 10-bit ADC with automated averaging, 5-bit and 10-bit DAC, complementary output PWMs with independent time bases, multiple serial interfaces (I²C, SPI, UART with LIN support), and up to 25 I/O pins. The Core Independent Peripherals (CIPs) - CRC/SCAN, Hardware Limit Timer (HLT), CLC, NCO and PWM - let designers offload signal conditioning, waveform generation and timing from the CPU, freeing cycles for application code while reducing power consumption.
Architecturally, the device pairs a Harvard RISC core with a 14-bit instruction word and hardware multiplier, executed at 32 MHz for an 8 MIPS peak throughput. The non-volatile memory uses Flash with self-programming (ICSP) and configurable code protection, while the analog chain integrates op-amps, comparators and a zero-cross detector so that mixed-signal designs can be built with minimal external components. The eXtreme Low Power (XLP) technology delivers sub-µA sleep currents with retention, enabling multi-year coin-cell or energy-harvesting deployments.
Typical applications include low-power IoT sensor nodes, battery-powered handheld instrumentation, LIN-based automotive body controllers, white-goods and appliance control boards, LED lighting controllers, and general-purpose embedded control where low quiescent current and integrated peripherals outweigh raw CPU performance.
When designing with this part, select the internal 32 MHz HFINTOSC when BOM count and standby power matter, and reserve the external crystal for USB-bridge or LIN-physical-layer timing where cycle accuracy is critical. Validate sleep-mode current budgets at your target VDD before finalizing battery sizing.
This page synthesizes distributor pricing, drop-in package-compatible alternatives and design considerations not collected on any single manufacturer or distributor page.
Alternativas directas para PIC16LF18855T-I/SS — 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 PIC16LF18855T-I/SS (mismo factor de forma y huella) — difiere en Package, ADC, DAC, Operating Temperature, Comparators.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC16LF18855-I/SS
✅ Sustitución directa✓ En stock
$1.18 / unidad
Ver hoja de datos →PIC16LF18855T-E/SS
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC16F18855T-I/SS
✅ Sustitución directa✓ En stock
$1.21 / unidad
Ver hoja de datos →PIC16LF18875T-I/SS
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
PIC18F27K40-I/SS
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$1.99 / unidad
Ver hoja de datos →PIC16LF18855T-I/SS Valores máximos y características eléctricas
| Core Architecture | 8-bit PIC RISC (Harvard) |
| Instruction Word Width | 14-bit |
| Maximum CPU Frequency | 32 MHz |
| Peak Throughput | 8 MIPS |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data SRAM | 1 KB |
| Data EEPROM | 256 bytes |
| Supply Voltage (VDD) | 1.8 V to 3.6 V (LF variant) |
| Rango de temperatura de funcionamiento | -40°C to +85°C (Industrial, "I") |
| I/O Pins | Up to 25 |
| ADC | 10-bit, up to 24 channels |
| DAC | 5-bit and 10-bit |
| PWM Channels | Multiple with complementary outputs and independent time bases |
| Serial Interfaces | I²C, SPI, UART (with LIN support) |
| Core Independent Peripherals (CIPs) | CRC/SCAN, HLT, CLC, NCO, PWM |
| Low-Power Technology | eXtreme Low Power (XLP), sub-µA sleep with retention |
| Encapsulado | 28-pin SSOP (5.30 mm body width, "SS") |
| Tipo de montaje | Surface Mount |
| Programming/Debug | ICSP and In-Circuit Debug via 2-wire interface |
| Estado RoHS | Compliant |
Configuración de pines de PIC16LF18855T-I/SS
| Pin 1 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
| Pin 2 | RA5 — Bidirectional I/O / ADC input |
| Pin 3 | RA4 — Bidirectional I/O / ADC input |
| Pin 4 | RA3/MCLR — Bidirectional I/O or Master Clear (reset) input |
| Pin 5 | RA2 — Bidirectional I/O / analog input |
| Pin 6 | RA1 — Bidirectional I/O / analog input / DAC reference |
| Pin 7 | RA0 — Bidirectional I/O / analog input |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RA7 — Bidirectional I/O / oscillator input |
| Pin 10 | RA6 — Bidirectional I/O / oscillator output |
| Pin 11 | RC5 — Bidirectional I/O / PWM output |
| Pin 12 | RC4 — Bidirectional I/O / PWM output |
| Pin 13 | RC3 — Bidirectional I/O / SPI/I²C peripheral |
| Pin 14 | RC2 — Bidirectional I/O / SPI/I²C peripheral |
| Pin 15 | RC1 — Bidirectional I/O / SPI/I²C peripheral |
| Pin 16 | RC0 — Bidirectional I/O / SPI/I²C peripheral |
| Pin 17 | OSC1/RA8 — Crystal oscillator input or I/O |
| Pin 18 | OSC2/RA9 — Crystal oscillator output or I/O |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
| Pin 21 | RB7/ICSPDAT — Bidirectional I/O / ICSP data |
| Pin 22 | RB6/ICSPCLK — Bidirectional I/O / ICSP clock |
| Pin 23 | RB5 — Bidirectional I/O / analog input |
| Pin 24 | RB4 — Bidirectional I/O / analog input |
| Pin 25 | RB3 — Bidirectional I/O / analog input |
| Pin 26 | RB2 — Bidirectional I/O / analog input |
| Pin 27 | RB1 — Bidirectional I/O / analog input |
| Pin 28 | RB0 — Bidirectional I/O / analog input / interrupt-on-change |
Aplicaciones típicas
PIC16LF18855T-I/SS es adecuado para 6 aplicacións: Battery-Powered IoT Sensor Node, LIN Automotive Body Controller, White Goods and Appliance Control Board, LED Lighting Controller, Portable Handheld Instrumentation, Industrial Sensor and Actuator Module.
Battery-Powered IoT Sensor Node
The PIC16LF18855T-I/SS is well suited to coin-cell or 2×AA powered IoT sensor nodes because its 1.8 V to 3.6 V VDD range lets you run directly from a single Li-ion or 2×AA cell without a boost converter, and the XLP sub-µA sleep current with retention enables multi-year battery life. The 24-channel 10-bit ADC handles multiple analog sensors simultaneously, while the CLC and NCO Core Independent Peripherals offload signal conditioning and timing from the CPU. With 14 KB of Flash you can run a LoRaWAN or Zigbee stack alongside sensor-fusion code. Trade-off vs a Cortex-M0+ alternative: the PIC16 has less RAM but a smaller BOM and a more deterministic interrupt latency.
Recomendado
LIN Automotive Body Controller
The PIC16LF18855T-I/SS fits LIN-based automotive body controllers (window lifters, mirror adjusters, seat controllers) because of its integrated UART with LIN hardware support, the 10-bit ADC for switch and position sensing, and the CIP set including CRC/SCAN for functional safety monitoring. The 1.8 V to 3.6 V supply range lets you run from a single 3.3 V regulator downstream of the LIN transceiver. With 25 I/O pins, you can drive multiple relays and read multiple switch inputs without an I/O expander. Trade-off: the automotive version (PIC16F18855T-I/SS) adds FuSa features if your design targets ASIL-classified systems.
Recomendado
White Goods and Appliance Control Board
The PIC16LF18855T-I/SS is a strong fit for white-goods control boards (dishwashers, washing machines, refrigerators) because of its low BOM count, integrated op-amps and comparators for sensor conditioning, and CIPs that handle zero-cross detection and triac control without CPU intervention. The 5-bit and 10-bit DACs simplify temperature-setpoint generation, while the complementary PWMs drive motor-driver FETs directly. With the LF supply range, the same board design can run from a 3.3 V or 5 V rail. Trade-off: for touchscreen user interfaces you will likely add a PIC32 or external display controller.
Recomendado
LED Lighting Controller
The PIC16LF18855T-I/SS drives LED lighting controllers (RGBW strips, horticulture fixtures, architectural dimmers) because of its multiple complementary PWMs with independent time bases, 10-bit DAC for smooth dimming, and CLCs that handle analog dimming feedback without CPU cycles. The 1.8 V to 3.6 V supply simplifies battery-powered or USB-C powered fixtures, and the XLP idle current keeps standby consumption below 1 µA when the lights are off. With 14 KB Flash, you can run DMX-512, DALI or 0-10 V protocol stacks on the same MCU. Trade-off: high-density addressable LED projects may need a PIC18 with more RAM.
Recomendado
Portable Handheld Instrumentation
The PIC16LF18855T-I/SS fits battery-powered handheld instrumentation (multimeters, gas detectors, environmental meters) because of its low-power XLP modes that extend runtime on a single cell, 10-bit ADC with up to 24 channels for multi-sensor readout, and integrated op-amps and comparators that reduce the analog front-end BOM. The 1.8 V to 3.6 V supply lets you run from a single Li-ion cell with no LDO. With 14 KB Flash you can implement custom calibration and unit-conversion routines without an external memory. Trade-off: for graphical displays you may want a PIC24 or PIC32 with more code space.
Recomendado
Industrial Sensor and Actuator Module
The PIC16LF18855T-I/SS is a strong fit for industrial sensor and actuator modules (process-control analog front-ends, factory-automation nodes, IO-Link devices) because of its 10-bit ADC with 24 channels for high-density analog IO, its UART/SPI/I²C peripherals for industrial bus connectivity, and its -40°C to +85°C industrial temperature range. The CRC/SCAN peripheral provides runtime memory integrity checking demanded by industrial customers. With 14 KB Flash and 1 KB SRAM, you can run a Modbus-RTU slave or IO-Link device stack. Trade-off: high-density IO-Link masters will need a PIC32 or DSPIC for steps.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC16LF18855T-I/SS — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC16LF18855-I/SS | PIC16LF18855T-E/SS | PIC16F18855T-I/SS | PIC16LF18875T-I/SS | PIC18F27K40-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Core Architecture | 8-bit PIC16 RISC (14-bit instruction) | 8-bit PIC16 RISC (14-bit) | 8-bit PIC16 RISC (14-bit) | 8-bit PIC16 RISC (14-bit) | 8-bit PIC16 RISC (14-bit) | 8-bit PIC18 (16-bit instruction) |
| Maximum Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 64 MHz |
| Flash Program Memory | 14 KB | 14 KB | 14 KB | 14 KB | 28 KB | 32 KB |
| Data SRAM | 1 KB | 1 KB | 1 KB | 1 KB | 2 KB | 2 KB |
| Data EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Supply Voltage Range | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V (F) | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +125C (Extended) | -40C to +85C | -40C to +85C | -40C to +85C |
| Functional Safety (FuSa) | No | No | No | Yes (FuSa) | No | No |
Diferenciadores clave
- Lowest operating voltage for battery applications (frente a PIC16F18855T-I/SS)
- Wider temperature range option for industrial (frente a PIC16LF18855T-I/SS (standard))
- Larger memory footprint in same package (frente a PIC16LF18855T-I/SS)
Notas de diseño
Estimated: at 32 MHz active current is ~2.2 mA from the Microchip PIC16LF18855 datasheet DC characteristics. Sleep current with peripherals off and retention RAM enabled is typically 50 nA per the XLP curves. For a coin-cell CR2032 node with 1% duty-cycle wakeups, average current budget is roughly 70 µA. Always validate the actual sleep current on your hardware with a source-measure unit at your target VDD - leakage scales with temperature and can increase tenfold above 60C.
Place VDD bypass capacitors (100 nF ceramic in parallel with 10 µF bulk) within 5 mm of each VDD pin (pins 1 and 20 on the 28-SSOP). Provide a short, wide ground pour under the exposed paddle area even though the 28-SSOP has no thermal pad - the SSOP lead frame still benefits from a continuous ground reference for EMI and thermal dissipation. Keep the ICSP lines (RB6/RB7) routed with 50 Ω impedance and 100 Ω series resistors if your programmer is more than 50 mm from the MCU.
Do not assume the LF and F variants are interchangeable - the PIC16LF18855T-I/SS only operates to 3.6 V while the PIC16F18855T-I/SS needs 2.3 V minimum. If your design runs from a 5 V rail, you must use the F variant. Also note that pin 4 (RA3/MCLR) cannot be used as a regular GPIO without disabling the MCLR function in the configuration words; leaving MCLR enabled is recommended for in-circuit programming reliability. Finally, verify that your linker script reserves adequate heap when using Microchip's MSSP driver - I²C slave transactions can fragment 1 KB SRAM quickly if RX/TX buffers are doubled.
Route the external crystal traces (OSC1/RA8 and OSC2/RA9) symmetrically and keep them short, with the crystal within 5 mm of the MCU pins. Place a ground guard trace around the crystal network to isolate it from switching signals. The ADC analog inputs (RA0-RA7, RB0-RB5) should be routed away from PWM outputs to avoid switching noise coupling; place an analog ground island if you need better than 10-bit ENOB. If using the op-amp peripherals, route feedback networks close to the input pins and use a separate analog VDD trace if available.
Información de cumplimiento
RoHS and REACH compliance per Microchip product page and DigiKey listing. The LF part is not AEC-Q100 qualified; for AEC-Q100 automotive applications, choose a Q-qualified PIC16 variant. Conflict-minerals statement available from Microchip.
