PIC16F1518T-I/MV - 28KB Flash 8-bit MCU, 20MHz, UQFN-28 | Microchip
MPN: PIC16F1518T-I/MV β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.18 | $21.80 |
| 100 | $1.83 | $183.00 |
| 500 | $1.55 | $775.00 |
| 1,000 | $1.32 | $1,320.00 |
PIC16F1518T-I/MV Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash), data memory (RAM), and peripherals on one die. The PIC16F1518 sits in the "enhanced mid-range" category of the PIC16 architecture hierarchy: PIC16 enhanced mid-range -> PIC16F1xxx family -> 8-bit MCU -> microcontroller -> embedded computing. This taxonomy reflects how the device trades off capability, power consumption, and cost for general-purpose embedded designs.
Key features include an internal 16MHz oscillator, MI2C, SPI, and EUSART with auto-baud, two CCP modules supporting Capture/Compare/PWM, two 8-bit timers (TMR0/TMR2), one 16-bit timer (TMR1), 25 mA source/sink I/O, an extended watchdog timer, and Programmable Ultra Low-Power Brown-Out Reset (ULPBOR). In-Circuit Serial Programming (ICSP) and In-Circuit Debug are supported via the MPLAB Snap toolchain.
The architecture uses a 14-bit instruction word and a 16-level hardware stack, with self read/write capable Flash plus a high-endurance Data Flash block (100,000 W/E cycles) in the lower 128 bytes of program memory. Operating voltage is 2.3V-5.5V (the F variant), while the LF variant runs from 1.8V-3.6V.
Typical applications include battery-powered sensor nodes, IoT edge devices, consumer appliances, low-power industrial control modules, LED lighting controllers, and small home appliances. The combination of XLP sleep currents, 17 ADC channels, and rich serial peripherals suits the device for system-management and housekeeping roles.
When designing with this part, place decoupling capacitors close to VDD/AVDD/VSS pins, and use the ICSP header on every prototype board to retain debug access through the MPLAB Snap. For noise-sensitive ADC applications, allocate dedicated analog and digital supply pins as documented in the pinout table.
This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes not found on a single manufacturer datasheet page.
Drop-in alternatives for PIC16F1518T-I/MV β 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 PIC16F1518T-I/MV (same form factor and footprint) β differing in ADC, CCP Modules, Package, Program Memory (Flash).
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Request AlternativesPIC16F1518T-I/MV Maximum Ratings & Electrical Characteristics
| Product Type | 8-bit Microcontroller (MCU) |
| Family | PIC16F1516/1517/1518/1519 (PIC16F1xxx, enhanced mid-range) |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| RAM | 1024 bytes |
| CPU Clock Speed | 20 MHz max |
| Internal Oscillator | 16 MHz |
| Supply Voltage (F variant) | 2.3 V to 5.5 V |
| Supply Voltage (LF variant) | 1.8 V to 3.6 V |
| I/O Pins | 12 |
| ADC | 10-bit, 17 channels, with Voltage Reference |
| CCP Modules | 2 (Capture/Compare/PWM) |
| Timers | 2x 8-bit (TMR0/TMR2), 1x 16-bit (TMR1) |
| Communication | MI2C, SPI, EUSART with auto-baud |
| I/O Source/Sink Current | 25 mA |
| Watchdog Timer | Extended WDT |
| Brown-Out Reset | Programmable Ultra Low-Power BOR (ULPBOR) |
| Programming/Debug | ICSP, In-Circuit Debug (via MPLAB Snap) |
| Instruction Set | Enhanced mid-range, 49 instructions, 16-level stack |
| Data Flash Endurance | 100,000 W/E cycles (lower 128B of program memory) |
| Operating Temperature (I grade) | -40C to +85C (industrial) |
| Package | UQFN-28 (4x4 mm) |
| Mounting Type | Surface Mount |
| RoHS | Compliant (per Microchip product page) |
PIC16F1518T-I/MV Pin Configuration
| Pin 1 | RA0 β Bidirectional I/O / analog input |
| Pin 2 | RA1 β Bidirectional I/O / analog input |
| Pin 3 | RA2 β Bidirectional I/O / analog input |
| Pin 4 | RA3 β Bidirectional I/O / analog input (also VREF+) |
| Pin 5 | RA4 β Bidirectional I/O |
| Pin 6 | RA5 β Bidirectional I/O |
| Pin 7 | RA6 β Bidirectional I/O |
| Pin 8 | RA7 β Bidirectional I/O |
| Pin 9 | VSS β Ground reference |
| Pin 10 | RB0 β Bidirectional I/O / interrupt-on-change |
| Pin 11 | RB1 β Bidirectional I/O / interrupt-on-change |
| Pin 12 | RB2 β Bidirectional I/O / interrupt-on-change |
| Pin 13 | RB3 β Bidirectional I/O / interrupt-on-change |
| Pin 14 | RB4 β Bidirectional I/O / interrupt-on-change |
| Pin 15 | RB5 β Bidirectional I/O / interrupt-on-change |
| Pin 16 | RB6 β Bidirectional I/O / ICSPCLK |
| Pin 17 | RB7 β Bidirectional I/O / ICSPDAT |
| Pin 18 | VSS β Ground reference (secondary) |
| Pin 19 | VDD β Positive supply voltage |
| Pin 20 | VSS β Ground reference |
| Pin 21 | RC0 β Bidirectional I/O |
| Pin 22 | RC1 β Bidirectional I/O |
| Pin 23 | RC2 β Bidirectional I/O |
| Pin 24 | RC3 β Bidirectional I/O / SPI/I2C |
| Pin 25 | RC4 β Bidirectional I/O / SPI/I2C |
| Pin 26 | RC5 β Bidirectional I/O |
| Pin 27 | RC6 β Bidirectional I/O / TX (EUSART) |
| Pin 28 | RC7 β Bidirectional I/O / RX (EUSART) |
Typical Applications
PIC16F1518T-I/MV is suitable for 6 applications: Battery-Powered IoT Sensor Node, Consumer Appliance Control, LED Lighting Controller, Industrial Sensor Interface Module, Automotive Body Electronics (Non-Safety), Home Security Keypad / HMI Panel.
Battery-Powered IoT Sensor Node
The PIC16F1518T-I/MV is well suited for battery-powered IoT sensor nodes thanks to its nanoWatt XLP sleep currents and 2.3V-5.5V supply range. Its 17-channel 10-bit ADC directly accepts outputs from temperature, humidity, and light sensors, eliminating an external ADC and reducing BOM cost. The 28KB Flash accommodates Over-The-Air (OTA) bootloader plus application code, while 1024B RAM supports buffering of sensor data. MI2C and SPI buses connect to radio modules or sensors, and the EUSART with auto-baud simplifies debug logging. The UQFN-28 (4x4 mm) footprint enables compact wearable or wall-mount form factors. Designers should leverage the extended WDT and ULPBOR to maximize battery life in deep-sleep modes.
Recommended
Consumer Appliance Control
The PIC16F1518T-I/MV fits consumer appliances such as coffee makers, washing machines, and small kitchen devices where cost, low power, and adequate I/O count are required. Its 12 I/O pins with 25 mA source/sink can directly drive relays, LEDs, and triac interfaces without external buffers. The two CCP modules provide PWM for motor control and dimming, while 17 ADC channels read temperature, water level, or humidity sensors. ICSP and In-Circuit Debug support fast firmware iteration during development using MPLAB X IDE and the MPLAB Snap programmer. The industrial -40C to +85C temperature range (I grade) suits under-cabinet and laundry-room environments.
Recommended
LED Lighting Controller
For LED lighting control, the PIC16F1518T-I/MV uses its two CCP modules to generate PWM dimming signals at frequencies well above 100 Hz, avoiding visible flicker in white and RGB LED strings. Its 28KB Flash supports DMX512, DALI, or proprietary wireless lighting protocols, and 1024B RAM accommodates color-mixing buffers. The 17-channel ADC allows monitoring of multiple LED strings for thermal foldback and constant-current regulation feedback. The 2.3V-5.5V supply range accepts common LED driver rail voltages, and the UQFN-28 (4x4 mm) package fits inside compact bulb or strip housings. EUSART with auto-baud eases integration with wireless modules such as Bluetooth Low Energy transceivers.
Recommended
Industrial Sensor Interface Module
The PIC16F1518T-I/MV serves as the housekeeping controller in industrial 4-20mA loop-powered or RS-485 sensor interface modules. Its 17-channel 10-bit ADC digitizes bridge sensors, thermistors, and 4-20mA current-sense resistors with the on-chip voltage reference, providing ratiometric measurements that track supply variation. MI2C and SPI connect to digital sensors or external FRAM for data logging, while EUSART interfaces to RS-485 transceivers with auto-baud detection across 9600 to 115200 baud. The ULPBOR and extended WDT protect against brown-out events in harsh factory environments. UQFN-28 (4x4 mm) plus industrial -40C to +85C operation suits DIN-rail and field-mount enclosures.
Recommended
Automotive Body Electronics (Non-Safety)
The PIC16F1518T-I/MV's industrial temperature range, 25 mA I/O drive, and 12 I/O pins suit non-safety automotive body electronics such as seat controllers, mirror adjusters, and ambient lighting. The CCP modules generate PWM for LED arrays or small DC motor position control, while the 10-bit ADC reads position feedback from potentiometers or Hall sensors. The UQFN-28 (4x4 mm) enables space-constrained PCB layouts under dashboards. Although not AEC-Q100 qualified (this is an industrial-grade part), the -40C to +85C I-grade rating operates reliably in cabin environments. Designers targeting AEC-Q100 should evaluate PIC16F1518-E/MV or automotive-grade PIC18 alternatives.
Recommended
Home Security Keypad / HMI Panel
The PIC16F1518T-I/MV integrates the scanning matrix and HMI logic for home security keypads, door stations, and small control panels. Its 12 I/O pins drive a 4x4 keypad matrix with room for status LEDs and a buzzer output, while the 10-bit ADC reads ambient light sensors for automatic backlight dimming. MI2C connects to LCD or OLED displays for status feedback, and EUSART provides a debug/console port for field diagnostics. The 28KB Flash stores secure keypad scan firmware with anti-tamper state machines, and 1024B RAM supports rolling buffers for entry sequences. The compact UQFN-28 (4x4 mm) keeps the keypad PCB small enough to fit in slim wall-mount enclosures.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1518T-I/MV β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1518T-I/SS |
|---|---|---|
| Package | UQFN-28 (4x4 mm) | SSOP-28 (5.30 mm) - different footprint |
| Brand | Microchip Technology | Microchip Technology |
| Flash Program Memory | 28 KB (16K x 14) | 28 KB (16K x 14) |
| RAM | 1024 bytes | 1024 bytes |
| CPU Clock | 20 MHz | 20 MHz |
| Supply Voltage | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
| ADC Channels | 17 channels, 10-bit | 17 channels, 10-bit |
| I/O Pins | 12 | 12 |
| Operating Temperature | -40C to +85C (I grade) | -40C to +85C (I grade) |
| Price (qty 1, as of 2026-09-19) | ~$2.45 | ~$2.40 |
Key Differentiators
- Highest Flash density in UQFN-28 (4x4 mm) PIC16F1xxx family (vs PIC16F1516T-I/MV)
- More ADC channels than PIC16F1509 family (vs PIC16F1509T-I/SS)
- Enhanced mid-range architecture vs baseline mid-range (vs PIC16F1503-I/ST)
Design Notes
Estimated: at 20 MHz, VDD = 5V, the PIC16F1518T-I/MV typical active current is approximately 6 mA (per PIC16F1xxx family datasheet typical curves). For battery-powered designs, leverage the nanoWatt XLP sleep modes which drop current into the microampere range. Place a 100 nF decoupling capacitor within 3 mm of each VDD pin and a bulk 10 uF tantalum or ceramic on the main supply rail to suppress switching transients.
The UQFN-28 (4x4 mm) package has an exposed thermal pad (EP) on the underside that must be soldered to a ground pad on the PCB for mechanical reliability and thermal dissipation. Per the Microchip package drawing, this pad should be a minimum 2.5x2.5 mm land with thermal vias to the inner ground plane. Route analog signals (RA0-RA3) away from switching nodes such as PWM outputs and the crystal traces to minimize ADC noise pickup.
Do not connect any I/O pin above VDD + 0.3V or below VSS - 0.3V; the absolute maximum ratings on PIC16F1518T-I/MV are 6.5V on VDD. Always configure unused I/O pins as outputs driving low (not high-impedance inputs) to avoid floating-pin current draw. When using ICSP, ensure the ICSPDAT and ICSPCLK lines (RB7/RB6) are not loaded with heavy capacitance, or programming may fail in-circuit.
For 10-bit ADC accuracy, drive the ADC input from a low-impedance source (< 10 kohm) and add an RC anti-alias filter at the MCU pin. The on-chip voltage reference (VREF+) must be bypassed with a 100 nF capacitor per the datasheet. Acquire multiple samples and apply digital averaging in firmware to reduce single-sample noise, especially when measuring ratiometric sensors sharing VDD as reference.
Compliance Information
Per Microchip product page, PIC16F1518T-I/MV is RoHS compliant and lead-free. It is NOT AEC-Q100 qualified - use PIC16F1518-E/MV or PIC16F1518-H/MV (automotive grade) for AEC-Q100 applications. Industrial -40C to +85C I-grade temperature range.
