PIC16LF18455-E/SP - 8-Bit XLP MCU, 14KB Flash, 32MHz | Microchip
MPN: PIC16LF18455-E/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.31 | $2.31 |
| 10 | $2.08 | $20.80 |
| 100 | $1.85 | $185.00 |
| 500 | $1.62 | $810.00 |
| 1,000 | $1.39 | $1,390.00 |
PIC16LF18455-E/SP Overview
A microcontroller (MCU) is a single-chip computer containing a CPU, memory, and programmable I/O peripherals. The PIC16F184xx family belongs to the 8-bit PIC architecture hierarchy (PIC -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor), designed for general-purpose and ultra-low-power applications. The 'LF' prefix denotes the low-voltage F-series variant optimized for battery-powered systems; the '184xx' series is the latest generation with enhanced analog and CIP integration compared to older PIC16F1xxx devices.
Key features include sleep current as low as 50 nA typical (XLP eXtreme Low-Power), a 12-bit ADC with up to 24 channels and Computation mode for averaging and oversampling, Peripheral Pin Select (PPS) for flexible signal routing, Memory Access Partitioning (MAP) for bootloader support, and the Device Information Area (DIA) for calibration and unique ID storage. The device is supported by Microchip's MPLAB X IDE, XC8 compiler, and the MPLAB Code Configurator (MCC) graphical setup tool.
Architecturally, the PIC16LF18455 uses a 14-bit modified Harvard RISC core with 49 instructions and a 16-level deep hardware stack. The 32MHz internal oscillator provides 8 MIPS throughput (4 Fcy), with PLL options for finer timing granularity. The CWG and PWM peripherals can operate independently of the CPU, reducing wake events and enabling deeper sleep averaging. The 12-bit ADC2 with computation performs hardware averaging, threshold detection, and burst averaging, offloading math from the CPU.
Typical applications include battery-powered IoT sensor nodes, low-power wireless remotes, energy-harvesting devices, HVAC thermostats, and general-purpose embedded control where extended battery life and integrated analog are priorities. The wide temperature range also supports automotive under-hood and industrial sensor-interface designs.
When designing with this part, select the appropriate voltage regulator (e.g. MCP1700) to remain within the 1.8V-3.6V supply window, and use MPLAB X IDE with the latest XC8 compiler for code generation. For production programming, Microchip's programmers (PICkit, ICD) provide full in-circuit debug support via the ICSP interface on pins 1 (ICSPCLK) and 28 (ICSPDAT).
This page synthesizes distributor pricing, drop-in PIC16LF18455-E/SP alternatives, pinout data, and practical design notes not assembled in the manufacturer datasheet alone.
Drop-in alternatives for PIC16LF18455-E/SP — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC16LF18455-E/SP (same form factor and footprint) — differing in ADC, DAC, Package, Mounting Type, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF18456-E/SP
✅ Drop-In✓ In Stock
$2.1 / Unit
View Datasheet →PIC16F18455-E/SP
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF18455-I/SP
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16F18456-E/SP
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF18455-E/SP Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC (14-bit instruction word) |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data SRAM | 1 KB |
| Maximum CPU Frequency | 32 MHz (8 MIPS) |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| ADC | 12-bit ADC with Computation (ADC2) |
| PWM Outputs | 2x 10-bit PWM |
| DAC | 5-bit DAC |
| Communication Peripherals | EUSART, SPI, I2C |
| CWG (Complementary Waveform Generator) | Yes |
| Operating Temperature | -40C to +125C (Extended, 'E' suffix) |
| Package | 28-pin SPDIP (0.300" / 7.62mm) |
| Mounting Type | Through-Hole |
| RoHS Status | Compliant |
PIC16LF18455-E/SP Pin Configuration
| Pin 1 | RA0/ICSPCLK/VPP — Analog/Digital I/O / ICP clock / Programming voltage |
| Pin 2 | RA1 — Analog/Digital I/O |
| Pin 3 | RA2 — Analog/Digital I/O |
| Pin 4 | RA3 — Analog/Digital I/O / MCLR (varies by config) |
| Pin 5 | RA4 — Analog/Digital I/O |
| Pin 6 | RA5 — Analog/Digital I/O |
| Pin 7 | RA6 — Analog/Digital I/O |
| Pin 8 | RA7 — Analog/Digital I/O / CLKIN/OSC1 |
| Pin 9 | VSS — Ground reference (digital) |
| Pin 10 | RB0 — Analog/Digital I/O / PWM |
| Pin 11 | RB1 — Analog/Digital I/O / PWM |
| Pin 12 | RB2 — Analog/Digital I/O |
| Pin 13 | RB3 — Analog/Digital I/O |
| Pin 14 | RB4 — Analog/Digital I/O |
| Pin 15 | RB5 — Analog/Digital I/O |
| Pin 16 | RB6 — Analog/Digital I/O / ICSPCLK (alt) |
| Pin 17 | RB7 — Analog/Digital I/O / ICSPDAT (alt) |
| Pin 18 | VSS — Ground reference (analog/digital) |
| Pin 19 | RC0 — Analog/Digital I/O |
| Pin 20 | RC1 — Analog/Digital I/O |
| Pin 21 | RC2 — Analog/Digital I/O |
| Pin 22 | RC3 — Analog/Digital I/O / SCL |
| Pin 23 | RC4 — Analog/Digital I/O / SDA |
| Pin 24 | RC5 — Analog/Digital I/O |
| Pin 25 | RC6 — Analog/Digital I/O / TX |
| Pin 26 | RC7 — Analog/Digital I/O / RX |
| Pin 27 | VDD — Positive supply voltage (1.8V-3.6V) |
| Pin 28 | VSS — Ground reference |
Typical Applications
PIC16LF18455-E/SP is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, Low-Power Wireless Remotes, Energy-Harvesting Devices, HVAC Thermostats and Environmental Sensors, Industrial Sensor Interface Modules, General-Purpose Embedded Control.
Battery-Powered IoT Sensor Nodes
The PIC16LF18455-E/SP suits battery-powered IoT sensor nodes thanks to its nanoamp-level XLP sleep current (~50 nA typical) and 1.8V-3.6V VDD that pairs directly with single-cell lithium or 2xAA batteries. The 12-bit ADC2 with Computation performs hardware oversampling and averaging, offloading the CPU and reducing wake events for energy efficiency. At 8 MIPS throughput, the core processes sensor fusion, encryption, and protocol framing in tens of milliseconds, leaving 99% of the duty cycle in sleep.
Recommended
Low-Power Wireless Remotes
The PIC16LF18455-E/SP drives sub-GHz or BLE remote controls by waking on interrupt, executing button-scan and protocol-frame logic, then returning to nanoamp sleep between user inputs. The integrated CWG (Complementary Waveform Generator) and 10-bit PWM can drive IR LEDs directly without CPU intervention, while EUSART/SPI/I2C interfaces connect to popular RF transceiver ICs. The 32MHz core completes debounce and Manchester encoding in microseconds, extending battery life over 1 year on a single CR2032.
Recommended
Energy-Harvesting Devices
Energy-harvesting applications such as solar-powered wireless switches leverage the PIC16LF18455-E/SP's nanoamp sleep current and ability to cold-start at 1.8V directly from a harvested supercap. The Device Information Area (DIA) provides factory-calibrated temperature compensation for energy budgeting, while MAP (Memory Access Partitioning) enables secure bootloader updates over the air without external secure elements. Core Independent Peripherals let the CWG, ADC2, and comparators process signals without waking the CPU.
Recommended
HVAC Thermostats and Environmental Sensors
HVAC thermostat designs use the PIC16LF18455-E/SP to read temperature, humidity, and occupancy sensors while driving relays, TRIACs, and communication interfaces. The 12-bit ADC2 with up to 24 analog channels supports direct connection to multiple analog sensors without external muxes, while the 5-bit DAC and PWM outputs drive triac phase-angle firing or proportional valves. The extended -40C to +125C temperature range supports outdoor and attic installations. Peripheral Pin Select (PPS) allows flexible PCB routing of comparator and PWM signals to GPIOs.
Recommended
Industrial Sensor Interface Modules
Industrial 4-20mA loop-powered sensors benefit from the PIC16LF18455-E/SP's wide 1.8V-3.6V supply, integrated 12-bit ADC2, and -40C to +125C extended temperature grade. The ADC2 with Computation mode performs oversampling to >16-bit effective resolution, meeting industrial measurement accuracy without external ADCs. EUSART and I2C interface to HART modems or industrial buses. The XLP nanoamp sleep current supports energy-budgeted loop-powered designs where total power is constrained to under 3.5 mA per IEC 61158.
Recommended
General-Purpose Embedded Control
General-purpose embedded control applications including appliance controls, building automation, and consumer electronics leverage the PIC16LF18455-E/SP for its rich peripheral set: 12-bit ADC2, 10-bit PWM, comparators, EUSART/SPI/I2C, and CWG. The PIC16 architecture's deterministic 49-instruction ISA simplifies firmware certification and timing analysis. MPLAB X IDE and the Code Configurator generate peripheral initialization code in seconds, accelerating time-to-prototype. The 28-SPDIP package simplifies hand-soldering for hobbyist, educational, and prototype-stage projects.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF18455-E/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF18456-E/SP | PIC16F18455-E/SP | PIC16LF18455-I/SP |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SPDIP | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same |
| Program Flash | 14 KB | 28 KB | 14 KB | 14 KB |
| SRAM | 1 KB | 2 KB | 1 KB | 1 KB |
| Operating Voltage | 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 3.6 V |
| Maximum Frequency | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +85C |
| ADC | 12-bit ADC2 with Computation | 12-bit ADC2 with Computation | 12-bit ADC2 with Computation | 12-bit ADC2 with Computation |
| Sleep Current (XLP) | ~50 nA typical | ~50 nA typical | ~300 nA typical | ~50 nA typical |
Key Differentiators
- Extended -40C to +125C temperature grade in same SPDIP-28 footprint (vs PIC16LF18455-I/SP)
- Nanoamp XLP sleep current for ultra-low-power designs (vs PIC16F18455-E/SP)
- 12-bit ADC2 with hardware computation offloads signal processing (vs PIC16LF18426-E/SL)
Design Notes
Decouple VDD (pin 27) with a 100 nF ceramic capacitor placed within 5 mm of the pin; add a bulk 10 uF tantalum or ceramic on the same supply rail. The PIC16LF18455-E/SP draws nanoamp-level current in sleep, so decoupling capacitor leakage dominates quiescent power. Use X7R or C0G dielectrics (not Y5V) to minimize leakage under DC bias. For battery applications, the MCP1700 LDO with 1.6 uA quiescent is preferred over switching converters that inject switching noise into the ADC readings.
Never apply 5V signals to PIC16LF18455-E/SP I/O pins when VDD is 3.3V - the absolute maximum I/O voltage is VDD+0.3V. The PIC16F18455-E/SP variant supports 5V on I/O when VDD is 5V; choosing the LF variant limits I/O levels to the 1.8V-3.6V range. Level-shifters or voltage dividers are required for 5V sensor interfacing. For ICSP programming, ensure the VPP line does not exceed 9V absolute maximum.
For mixed-signal PCB layouts, route the analog AVSS (pin 18) and digital VSS (pin 9/28) separately to a single-point star ground to avoid digital return currents contaminating analog ADC readings. Place the MCU close to the analog sensors and use a guard ring around sensitive analog traces. The 28-SPDIP package is through-hole; use a socket for prototype firmware swapping, but solder directly for production to avoid mechanical stress on long leads.
The 28-SPDIP package has a junction-to-ambient thermal resistance (theta_JA) of approximately 60 C/W. At +125C maximum junction temperature with typical 5 mA active current and 3.3V supply, the device dissipates ~16 mW - well within thermal limits. No heatsink is required for the SPDIP package under normal operation. If operating at the +125C extended temperature limit, derate to 70% of maximum clock frequency to stay within recommended thermal envelope.
Compliance Information
RoHS and lead-free per Microchip product page; AEC-Q100 not qualified (not automotive grade - consider AEC-Q100-qualified variants if automotive application required)
