PIC16LF18854-I/SP - 8-Bit XLP MCU, 7KB Flash, 32MHz | SPDIP-28
MPN: PIC16LF18854-I/SP ✓ NakahandaPIC16LF18854-I/SP Ulas
An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit data path, integrating a CPU core, non-volatile program memory (Flash/ROM), working RAM, and peripherals such as ADC, timers, communication ports and GPIO onto one die. It sits inside the broader hierarchy: microcontroller -> embedded processor -> integrated circuit -> semiconductor. The PIC16F architecture uses a 14-bit instruction word and Modified Harvard bus design, optimised for deterministic interrupt response and very low active/idle current.
The PIC16LF18854-I/SP integrates a 10-bit ADC, 25 I/O pins, Core Independent Peripherals (CIPs), CRC/SCAN, HLT (Hardware Limit Timer) and a complementary array of accessories. Communication options include I2C, SPI, and EUSART. The XLP variant (LF suffix) supports sleep currents down to the tens of nA range, which is the key differentiator versus the non-LF PIC16F18854 family members.
Typical applications include battery-powered IoT sensor nodes, low-energy remote controls, wearable health patches, and industrial sensor transmitters. Designers choose this part when they need the through-hole SPDIP-28 footprint for prototyping, hand-rework, or harsh-environment assemblies where lead-frame compliance reduces thermal-cycling stress.
When designing, place a 0.1 uF decoupling capacitor as close as possible to VDD, configure the configuration words (FOSC, WDTE, LVP, etc.) correctly before code download, and respect the 3.6 V absolute maximum on VDD to avoid latch-up. The 28-pin SPDIP pinout is shared across the PIC16F18854/LF18854 family, simplifying PCB reuse.
This page combines distributor pricing, drop-in same-package alternatives, and practical engineering notes curated from Microchip datasheets and the PIC16F1885X/7X family reference manual - information gain beyond what the bare datasheet front page provides.
Mga alternatibo na pwedeng ilagay na PIC16LF18854-I/SP — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok PIC16LF18854-I/SP (parehas na form factor at footprint) — pagkakaiba sa Operating Temperature, Package, ADC, Program Memory (Flash), Communication Peripherals.
PIC16LF18855-I/SP
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC16LF18856-I/SP
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
PIC16LF18857-I/SP
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC16F18854-I/SP
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC16F18855-I/SP
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
PIC16LF18854-I/SP Mga Pinakamataas na Rating at Electrical Characteristics
| Family | PIC16F1885X / PIC16F1887X |
| CPU | 8-bit PIC16, 14-bit instruction word |
| Maximum CPU Clock | 32 MHz |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data SRAM | 512 B |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 25 |
| ADC | 10-bit |
| Packhaging | 28-pin SPDIP (0.300 inch, 7.62 mm) |
| Uri ng Pagpapasok | Through-Hole |
| Temperature na Operasyon | -40 C to +85 C (Industrial, I suffix) |
| Low-Power Technology | eXtreme Low Power (XLP) |
| Communication Peripherals | I2C, SPI, EUSART (enhanced USART) |
| Core Independent Peripherals | Yes (CLC, NCO, PWM, CRC/SCAN, HLT) |
| Tindminan RoHS | Compliant |
| Lead-Free | Yes |
| Level ng MSL | Not applicable (through-hole) |
| Configuration Words | FOSC, WDTE, LVP, BOR, etc. (set before code download) |
Pin Configuration ng PIC16LF18854-I/SP
| Pin 1 | MCLR — Master Clear (reset, active low; weak pull-up enabled in configuration) |
| Pin 2 | RA0 — PORTA bit 0 (analog/digital I/O) |
| Pin 3 | RA1 — PORTA bit 1 (analog/digital I/O) |
| Pin 4 | RA2 — PORTA bit 2 (analog/digital I/O) |
| Pin 5 | RA3 — PORTA bit 3 (analog/digital I/O) |
| Pin 6 | RA4 — PORTA bit 4 (analog/digital I/O) |
| Pin 7 | RA5 — PORTA bit 5 (analog/digital I/O) |
| Pin 8 | RE3 — PORTE bit 3 (digital input only) |
| Pin 9 | OSC1 — Crystal/clock input or external clock |
| Pin 10 | OSC2 — Crystal output or clock out |
| Pin 11 | RC0 — PORTC bit 0 (analog/digital I/O) |
| Pin 12 | RC1 — PORTC bit 1 (analog/digital I/O) |
| Pin 13 | RC2 — PORTC bit 2 (analog/digital I/O) |
| Pin 14 | RC3 — PORTC bit 3 (analog/digital I/O, SCL/SDA alt) |
| Pin 15 | RC4 — PORTC bit 4 (analog/digital I/O) |
| Pin 16 | RC5 — PORTC bit 5 (analog/digital I/O) |
| Pin 17 | RC6 — PORTC bit 6 (analog/digital I/O) |
| Pin 18 | RC7 — PORTC bit 7 (analog/digital I/O) |
| Pin 19 | VSS — Ground |
| Pin 20 | VDD — Positive supply (1.8 V to 3.6 V) |
| Pin 21 | RB0 — PORTB bit 0 (analog/digital I/O, interrupt-on-change) |
| Pin 22 | RB1 — PORTB bit 1 (analog/digital I/O) |
| Pin 23 | RB2 — PORTB bit 2 (analog/digital I/O) |
| Pin 24 | RB3 — PORTB bit 3 (analog/digital I/O) |
| Pin 25 | RB4 — PORTB bit 4 (analog/digital I/O) |
| Pin 26 | RB5 — PORTB bit 5 (analog/digital I/O) |
| Pin 27 | RB6 — PORTB bit 6 (ICSPCLK / analog/digital I/O) |
| Pin 28 | RB7 — PORTB bit 7 (ICSPDAT / analog/digital I/O) |
Tipikal na mga Gamit
PIC16LF18854-I/SP ay nararapat para sa 6 aplikasyons: Battery-Powered IoT Sensor Nodes, Wearable Health Patches, Industrial Sensor Transmitters, Low-Energy Remote Controls, Automotive Body and Lighting Modules, Smart Home Sensor Hubs.
Battery-Powered IoT Sensor Nodes
The PIC16LF18854-I/SP's 1.8-3.6 V XLP operation and tens-of-nA sleep current make it well-suited for battery-powered IoT sensor nodes transmitting periodic environmental data over sub-GHz or BLE modems. The 32 MHz CPU clock supports 115200-baud UART bridges to radios, while the 10-bit ADC reads temperature, humidity, or battery voltage with internal FRC clock to keep the CPU asleep during conversions. Compared to a non-LF PIC16F18854, the LF version reduces sleep current roughly 5-10x at the cost of an upper voltage ceiling of 3.6 V, justifying the choice for coin-cell designs.
Inirekomenda
Wearable Health Patches
Wearables such as heart-rate patches and continuous-glucose monitors prioritize microamp sleep current and small PCB area; the PIC16LF18854-I/SP addresses both with deep-sleep currents in the tens of nA and a 32 MHz core that wakes within microseconds to service sensor interrupts. The 25 I/O pins multiplex SPI/I2C sensor buses, EUSART for BLE bridges, and PWM for LED/optical feedback. The LF XLP variant is rated for sub-1 uA RTC-style sleep, allowing multi-week battery life when duty-cycled at 1% active time.
Inirekomenda
Industrial Sensor Transmitters
The PIC16LF18854-I/SP is well-matched to 4-20 mA loop-powered sensor transmitters and Modbus RTU field devices in factory automation. Its 10-bit ADC reads bridge sensors and 4-20 mA shunts, the EUSART drives RS-485 transceivers, and the CRC/SCAN peripheral adds IEC 61508-style safety diagnostics. The wide industrial -40 C to +85 C temperature grade and the through-hole SPDIP-28 package suit harsh cabinets where lead-frame compliance outperforms gull-wing SMD leads under thermal cycling.
Inirekomenda
Low-Energy Remote Controls
For handheld RF remote controls (garage doors, lighting, key fobs), the PIC16LF18854-I/SP's XLP sleep current and 32 MHz performance offer an excellent balance. The 7 KB Flash easily fits capacitive-touch and rolling-code firmware, while Core Independent Peripherals (CLC, NCO) generate sub-GHz OOK/FSK modulation in hardware without waking the CPU. The 25 GPIO count easily accommodates keypad matrix, IR LED driver, and RF front-end EN lines.
Inirekomenda
Automotive Body and Lighting Modules
In non-safety automotive body modules (interior lighting, mirror controllers, seat position memory), the PIC16LF18854-I/SP serves as a cost-effective slave controller. The 10-bit ADC reads potentiometers and current shunts, PWM channels drive LED strings, and the LIN-compatible EUSART interfaces to body-control modules. The SPDIP-28 through-hole package aids serviceability in dealer repair channels. For safety-relevant ECUs, consider AEC-Q100-qualified PIC16F18855-I/SP variants.
Inirekomenda
Smart Home Sensor Hubs
Smart-home climate and leak-detection hubs rely on long battery life and small PCB footprints; the PIC16LF18854-I/SP meets both with XLP sleep current and a 28-pin SPDIP for prototype-stage hand-rework. I2C drives environmental sensors (temperature, humidity, VOC), SPI connects to an LoRa or BLE coprocessor, and the 32 MHz CPU runs the application logic between sleeps. The LF variant's 3.6 V ceiling pairs cleanly with 2xAA alkaline or single-cell Li-FeS2 chemistries.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for PIC16LF18854-I/SP — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | PIC16LF18855-I/SP | PIC16LF18856-I/SP | PIC16LF18857-I/SP | PIC16F18854-I/SP | PIC16F18855-I/SP |
|---|---|---|---|---|---|---|
| Package | 28-SPDIP (through-hole) | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 7 KB | 14 KB | 28 KB | 56 KB | 7 KB | 14 KB |
| SRAM | 512 B | 1 KB | 2 KB | 4 KB | 512 B | 1 KB |
| Operating Voltage | 1.8 V to 3.6 V (LF/XLP) | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Maximum CPU Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| I/O Pins | 25 | 25 | 25 | 25 | 25 | 25 |
| XLP / Sleep Current | Yes (tens of nA) | Yes (tens of nA) | Yes (tens of nA) | Yes (tens of nA) | Yes (XLP, slightly higher than LF) | Yes (XLP, slightly higher than LF) |
| Temperature Grade | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Pangunahing mga Pagkakaiba
- Largest memory in same SPDIP-28 LF XLP family (kumpara saPIC16LF18855-I/SP)
- Higher upper voltage ceiling for 5V rails (kumpara saPIC16LF18854-I/SP)
- Through-hole SPDIP-28 package for prototype-stage hand-rework (kumpara saPIC16LF18854-I/SO)
- Core Independent Peripherals (CIPs) reduce CPU wakeups (kumpara saOlder PIC16F1xx parts without CIPs)
Talaan ng Disenyo
Place a 0.1 uF decoupling capacitor as close as possible to the VDD pin (pin 20) of the PIC16LF18854-I/SP. For noisy rails or long VDD traces, add a bulk 1-10 uF tantalum or ceramic on the same node. The LF variant draws tens of nA in deep sleep, so any capacitor leakage can dominate - select X7R ceramics with low leakage, and ensure MCLR has the internal weak pull-up enabled unless an external pull-up is preferred.
Estimated: the SPDIP-28 package has a theta_JA of approximately 60-80 C/W in still air for typical PCB copper area. At full 32 MHz CPU clock and 3.6 V VDD drawing ~6 mA, dissipation is ~22 mW (negligible heating). However, in a sealed enclosure at +85 C ambient, the junction rises only 1-2 C, so no heatsink is required. Verify with the Microchip thermal management application note for SPDIP packages in your specific PCB stackup.
Route the ICSPDAT and ICSPCLK lines (RB7/RB6, pins 28/27) to an in-circuit programming header with no series resistors or capacitors in series. Place the programming header near the MCU with short, direct traces; long ICSP traces pick up noise during debug. For hand-rework on SPDIP-28 sockets, consider using a ZIF socket to avoid bending pins during repeated programming cycles.
Do not exceed 3.6 V on VDD - the LF silicon lacks the F variant's 5.5 V tolerance and will suffer latch-up or EOS damage above 3.6 V. Always set the configuration words (especially FOSC and WDTE) before code download; an unprogrammed CONFIG can leave the oscillator in an undefined state and prevent debugging. Ensure MCLR is not floating during normal operation - either tie to VDD via 10 kohm resistor or enable the internal weak pull-up.
For I2C/SPI buses running at the maximum supported 32 MHz CPU clock, keep bus traces under 100 mm and use 4k7 pull-ups on SDA/SCL for I2C. For EUSART at 115200 baud over long cables, add a TVS diode and series resistor for ESD/EFT protection. The PIC16LF18854-I/SP's Schmitt-trigger inputs tolerate slow edges, but a 100 ohm series resistor dampens ringing on SPI SCK traces.
Impormasyon ng Pagsunod sa Kautusan
RoHS and REACH compliant per Microchip product page; lead-free and halogen-free per Microchip packaging specifications. Not AEC-Q100 qualified - for automotive, consider the PIC16F1885x-I/SP family automotive variants.
