PIC16LF1518-E/SS - 8-bit MCU, 28KB Flash, 20MHz, 28-SSOP | Microchip
MPN: PIC16LF1518-E/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.1 | $2.10 |
| 10 | $1.89 | $18.90 |
| 100 | $1.62 | $162.00 |
| 500 | $1.38 | $690.00 |
| 1,000 | $1.21 | $1,210.00 |
PIC16LF1518-E/SS Overview
A PIC microcontroller is a compact, self-contained computer-on-a-chip built around a RISC (Reduced Instruction Set Computer) Harvard architecture core, combining CPU, non-volatile Flash memory, SRAM, and configurable peripherals on a single die. PIC MCUs sit at the lowest tier of the microcontroller taxonomy (microcontroller -> embedded processor -> semiconductor IC) and are widely used where deterministic timing, low power, and small footprint outweigh raw compute performance. The "LF" prefix in PIC16LF1518 indicates the wide-voltage, low-power XLP variant, while "F" parts (e.g. PIC16F1518) target the 2.3V-5.5V range.
Key differentiating specifications of the PIC16LF1518-E/SS include 28KB Flash with 16K x 14 instruction-word organization, 1024-byte SRAM, 256-byte EEPROM, 17 I/O pins, a 10-bit ADC with multiple channels, two capture/compare/PWM modules, an enhanced USART with auto-baud, an SPI peripheral, and a master I2C/SPI interface. The "-E" suffix denotes the -40°C to +125°C extended industrial temperature grade, and the "/SS" suffix denotes the 28-pin SSOP (Shrink Small Outline Package) form factor.
Architecturally, the PIC16LF1518 uses Microchip's enhanced mid-range 8-bit core with a 14-bit instruction word, 8-level hardware stack, and a two-cycle PLL-free oscillator option (HFINTOSC up to 16MHz, LFINTOSC for low-power). nanoWatt XLP technology delivers typical sleep currents below 1 µA, enabling battery-powered designs that wake on interrupts or WDT. The ADC is an Successive Approximation Register (SAR) type with up to 17 analog channels in this pinout.
Typical applications include battery-powered sensor nodes, low-power IoT edge devices, consumer white goods user-interface controllers, automotive body and climate-control sub-modules (with the -E grade being automotive-suitable), and industrial metering. The wide 1.8V-3.6V supply allows direct operation from a single Li-ion/LiPo cell or two AA cells.
A key design consideration is the proper configuration of the configuration-word bits (FOSC, WDTE, PWRTE, BOREN) and the choice of internal vs external oscillator: enabling the internal HFINTOSC and disabling the WDT cuts sleep current to the nanoWatt XLP range. Engineers migrating from older PIC16F1xxx parts should re-validate interrupt latency and PPS pin-mapping behaviour.
This page synthesizes distributor pricing, drop-in same-package alternatives drawn from the PIC16LF151x family and verified cross-reference data, and practical design notes not found in the standalone manufacturer datasheet, providing information gain beyond Digi-Key/Mouser product listings.
Drop-in alternatives for PIC16LF1518-E/SS — 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 PIC16LF1518-E/SS (same form factor and footprint) — differing in ADC, Core Architecture, I/O Pins, Package, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1519-E/SS
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16LF1517-E/SS
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F1518-E/SS
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F1519-E/SS
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16LF1518-E/SP
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.18 / Unit
View Datasheet →PIC16LF1518-E/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | Enhanced Mid-Range 8-bit PIC (14-bit instruction word) |
| Family | PIC® XLP™ 16F |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| Data SRAM | 1024 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 20 MHz |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 17 |
| ADC | 10-bit SAR, multi-channel |
| CCP Modules | 2 |
| Serial Interfaces | SPI, I2C (MSSP), EUSART (with auto-baud) |
| Timers | Multiple 8/16-bit (periphery varies by datasheet) |
| Temperature Grade | -40 °C to +125 °C (Extended, "-E") |
| Package | 28-pin SSOP ("/SS") |
| Low-Power Technology | nanoWatt XLP |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16LF1518-E/SS Pin Configuration
| Pin 1 | RA3/AN3/VPP — Bidirectional I/O, analog input, programming voltage |
| Pin 2 | RA4/AN4 — Bidirectional I/O, analog input |
| Pin 3 | RA5/MCLR/VPP — Bidirectional I/O, master clear (reset) input, programming voltage |
| Pin 4 | RA6 — Bidirectional I/O |
| Pin 5 | RA7 — Bidirectional I/O |
| Pin 6 | VDD — Positive supply (1.8-3.6 V) |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA0/AN0 — Bidirectional I/O, analog input |
| Pin 9 | RA1/AN1 — Bidirectional I/O, analog input |
| Pin 10 | RA2/AN2 — Bidirectional I/O, analog input |
| Pin 11 | RC0 — Bidirectional I/O |
| Pin 12 | RC1 — Bidirectional I/O |
| Pin 13 | RC2 — Bidirectional I/O |
| Pin 14 | RC3 — Bidirectional I/O |
| Pin 15 | RC4 — Bidirectional I/O |
| Pin 16 | RC5 — Bidirectional I/O |
| Pin 17 | RC6 — Bidirectional I/O |
| Pin 18 | RC7 — Bidirectional I/O |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply (1.8-3.6 V) |
| Pin 21 | RB0/INT — Bidirectional I/O, external interrupt |
| Pin 22 | RB1 — Bidirectional I/O |
| Pin 23 | RB2 — Bidirectional I/O |
| Pin 24 | RB3 — Bidirectional I/O |
| Pin 25 | RB4 — Bidirectional I/O |
| Pin 26 | RB5 — Bidirectional I/O |
| Pin 27 | RB6/ICSPCLK — Bidirectional I/O, ICD clock |
| Pin 28 | RB7/ICSPDAT — Bidirectional I/O, ICD data |
Typical Applications
PIC16LF1518-E/SS is suitable for 6 applications: Battery-Powered IoT Sensor Node, Consumer Appliance User-Interface Controller, Automotive Body and Climate Sub-Module, Industrial Process Meter / Data Logger, Portable Medical Monitoring Accessory, Smart Home / Building Automation Node.
Battery-Powered IoT Sensor Node
The PIC16LF1518-E/SS fits battery-powered IoT sensor nodes because of its nanoWatt XLP technology and 1.8-3.6 V wide-voltage range, allowing direct connection to a single Li-ion / 2xAA cell. The 10-bit SAR ADC handles analog sensor readout (temperature, humidity, light), while the MSSP provides I2C/SPI connectivity to digital sensors. Typical sleep current is below 1 µA with WDT disabled per the manufacturer datasheet, enabling multi-year coin-cell operation; the 28 KB Flash accommodates BLE/Zigbee stack fragments or LoRaWAN MAC when paired with a radio module.
Recommended
Consumer Appliance User-Interface Controller
The PIC16LF1518-E/SS works as a user-interface MCU in white goods (washing machines, dishwashers, microwave ovens) thanks to its 17 I/O pins for driving segment LCDs, keypads, rotary encoders, and buzzer PWM. Two CCP modules generate the PWM tones for alarms and motor control feedback. The 28-SSOP package is easy to hand-solder for prototyping while remaining production-ready, and the extended -40 to +125 °C "-E" temperature grade handles the thermal envelope of enclosed appliances per the manufacturer datasheet.
Recommended
Automotive Body and Climate Sub-Module
The PIC16LF1518-E/SS "-E" extended grade is suitable for non-safety automotive body controllers (window lifts, seat controls, HVAC flaps, mirror adjust) operating from a 12 V bus regulated to 3.3 V. The wide-voltage tolerance handles crank/drop conditions, while the EUSART with auto-baud enables LIN-bus slave communication per the manufacturer datasheet. Two CCP modules can drive small brushed DC motors via external FETs; the 10-bit ADC reads position feedback and current sense. Note: for safety-critical ADAS use, an AEC-Q100-qualified dsPIC33 is recommended instead.
Recommended
Industrial Process Meter / Data Logger
The PIC16LF1518-E/SS fits industrial 4-20 mA loop meters and low-rate data loggers because its 10-bit SAR ADC with multiple channels handles analog sensor inputs while 256 bytes of EEPROM store calibration constants and rolling-log data across power cycles. The MSSP I2C/SPI interfaces connect to external FRAM or EEPROM for larger logs, and the EUSART drives RS-485 transceivers for Modbus RTU. The 1.8-3.6 V operation allows direct Li-SOCl2 backup-battery use, while the extended -40 to +125 °C grade suits outdoor enclosures.
Recommended
Portable Medical Monitoring Accessory
The PIC16LF1518-E/SS is appropriate for portable medical accessories (pulse-oximeter cables, smart thermometer probes, pill-bottle reminders) thanks to its nanoWatt XLP sleep modes that extend battery life. The 10-bit ADC reads sensor signals, and the EUSART streams data to a host phone or display over a Bluetooth Low Energy module. The 1024 B SRAM accommodates short sensor buffers, and the SSOP-28 footprint fits inside small enclosures. Per IEC 62304 classification, design history files must reference the manufacturer datasheet for verification.
Recommended
Smart Home / Building Automation Node
The PIC16LF1518-E/SS fits smart-home nodes (thermostats, occupancy sensors, light controllers) because its XLP technology supports multi-year battery life and the 1.8-3.6 V range accommodates USB-power or 2xAA cells. The MSSP drives I2C sensors (temperature, lux, CO2); the EUSART serves as a UART bridge to Zigbee or Sub-GHz radio modules. Two CCP timers provide precise PWM for LED dimming per the manufacturer datasheet, and the SSOP-28 package integrates easily into compact wall-switch form factors.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1518-E/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1519-E/SS | PIC16LF1517-E/SS | PIC16F1518-E/SS | PIC16F1519-E/SS |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SSOP-28 | SSOP-28 - same | SSOP-28 - same | SSOP-28 - same | SSOP-28 - same |
| Flash Program Memory | 28 KB (16K x 14) | 28 KB | 16 KB (-43%) | 28 KB | 28 KB |
| Data SRAM | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes |
| Data EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Operating Voltage (VDD) | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V (different range) | 2.3 V to 5.5 V (different range) |
| Maximum CPU Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| I/O Pins | 17 | Up to 36 (larger pin variants) | 17 | 17 | Up to 36 |
| Temperature Grade | -40°C to +125°C (Extended) | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C |
| ADC | 10-bit SAR | 10-bit SAR | 10-bit SAR | 10-bit SAR | 10-bit SAR |
Key Differentiators
- Largest Flash option in the 28-pin PIC16LF151x family (vs PIC16LF1517-E/SS)
- Wide-voltage 1.8-3.6 V support for battery designs (vs PIC16F1518-E/SS)
- nanoWatt XLP technology for sub-µA sleep (vs PIC16F1518-E/SS)
Design Notes
Estimated: at 3.3 V VDD, 20 MHz HFINTOSC, the PIC16LF1518-E/SS core draws ~3 mA active and <1 µA in Sleep with WDT disabled, per the Microchip datasheet. For battery life estimation, use Sleep current as the dominant term when duty-cycling sensors (<1% active). Place a 0.1 µF decoupling capacitor within 5 mm of VDD pins (pin 6 and pin 20) and a bulk 1-10 µF tantalum or ceramic at the supply rail. Enable the on-chip Brown-Out Reset (BOR) via CONFIG1 to avoid indeterminate code execution during VDD dips.
Keep the MCLR/RA5/VPP pin (pin 3) trace short to minimise inadvertent reset noise; add a 10 kΩ pull-up to VDD and a 100 nF capacitor to ground if the pin is used as a manual reset input. Place the ICSP clock (RB6) and data (RB7) lines in a way that does not cross high-current traces, since the same pins are also general-purpose I/O. For SSOP-28, use a 0.65 mm pitch land pattern with thermal relief on VSS/VDD pours for hand-rework.
The "-E" suffix (Extended) versus "-I" (Industrial) temperature grade is a common ordering mistake: PIC16LF1518-I/SS is rated -40 to +85 °C while PIC16LF1518-E/SS is -40 to +125 °C. Verify that the device configuration bits (CONFIG1) match the application: an external oscillator selection with no physical crystal will fail to start. Do not omit the AVSS/AVDD pair decoupling when the ADC is enabled - inject 10 µF + 100 nF at the analog supply pin to keep ADC readings below 1 LSB RMS noise.
Compliance Information
RoHS compliant per Microchip product page; not formally AEC-Q100 qualified (use dsPIC33CK for automotive safety). Extended -40 to +125 °C operating range but not ISO 26262 or IEC 61508 certified.
