PIC16LF1519-I/MV - 28KB Flash 8-bit MCU 20MHz UQFN-40 | Microchip
MPN: PIC16LF1519-I/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.32 | $3.32 |
| 10 | $2.98 | $29.80 |
| 100 | $2.65 | $265.00 |
| 500 | $2.34 | $1,170.00 |
| 1,000 | $2.08 | $2,080.00 |
| 3,000 | $1.86 | $5,580.00 |
PIC16LF1519-I/MV Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating CPU core, Flash program memory, SRAM, EEPROM, peripherals, and interrupt logic in one package. PIC microcontrollers from Microchip use a RISC-based Harvard architecture with separate program and data buses, providing deterministic instruction timing and low power consumption. The PIC16 family occupies the mid-range of Microchip's portfolio, balancing code density, peripheral integration, and cost for consumer, industrial, and IoT applications.
Key features of the PIC16LF1519-I/MV include the eXtreme Low Power (XLP) technology with nanoWatt sleep currents, an internally-tuned 16MHz HFINTOSC, two 10-bit PWM modules with complementary outputs, a 10-bit ADC with up to 28 channels, and on-chip mTouch capacitive sensing support. The device also provides an enhanced USART, two MSSP peripherals for SPI/I2C, and an in-circuit debugger interface. Internal oscillator accuracy eliminates the need for an external crystal in many cost-sensitive designs.
The PIC16LF1519-I/MV uses a 14-bit instruction word with a 16-level hardware stack, eight interrupt sources, and a vectored interrupt controller. Power management features include Idle and Sleep modes with peripheral clock gating, brown-out reset, and a low-power watchdog timer with its own on-chip 31kHz oscillator. The 10-bit ADC delivers up to 28 analog channels with automatic channel scanning, supporting sensor and battery-monitoring designs without an external analog MUX.
Typical applications include low-power IoT sensor nodes, consumer appliances with HMI displays, USB HID peripherals, industrial sensor hubs, battery-powered data loggers, and home automation controllers. The 36 I/O lines and three serial interfaces (EUSART plus two I2C/SPI) provide enough connectivity for multi-sensor fusion, while XLP nanoWatt technology keeps quiescent current low for years-of-life on coin cells.
When designing with this device, ensure the exposed thermal pad (EP) on the UQFN-40 is soldered to the PCB ground plane to meet thermal and electrical specifications; floating the EP violates the datasheet. Use Microchip's MPLAB X IDE with the XC8 compiler and consider the PICkit 4 or MPLAB Snap for programming and debugging. Decouple VDD with 100nF and 1uF ceramics placed within 5mm of each power pin.
This page synthesizes distributor pricing, drop-in alternatives within the PIC16LF151x family, application notes, and practical design considerations that go beyond what is printed in the Microchip datasheet.
Drop-in alternatives for PIC16LF1519-I/MV — 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 PIC16LF1519-I/MV (same form factor and footprint) — differing in Operating Temperature, Package, I/O Pins, RoHS Status, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1519T-I/MV
✅ Drop-In✓ In Stock
$2.25 / Unit
View Datasheet →PIC16LF1518-I/MV
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1519-I/MV
✅ Drop-In✓ In Stock
$1.92 / Unit
View Datasheet →PIC16LF1517-I/MV
✅ Drop-In✓ In Stock
$1.71 / Unit
View Datasheet →PIC16LF1519-I/MV
✅ Drop-In✓ In Stock
$1.86 / Unit
View Datasheet →PIC16LF1519-I/MV Maximum Ratings & Electrical Characteristics
| Series | PIC16LF151x |
| Core | PIC16 8-bit RISC |
| Program Memory | 28 KB Flash (16K x 14 words) |
| Data SRAM | 1024 bytes |
| Data EEPROM | 128 bytes |
| Maximum Clock Frequency | 20 MHz |
| Operating Voltage Range | 1.8 V to 3.6 V |
| I/O Pins | 36 |
| ADC | 10-bit, up to 28 channels |
| PWM | Two 10-bit PWM modules |
| Serial Interfaces | 1x EUSART, 2x MSSP (I2C/SPI) |
| Timers | 5 (Timer0/1/2/4/6) |
| Operating Temperature | -40 C to +85 C (Industrial, 'I') |
| Package | 40-pin UQFN (5x5 mm) with exposed pad |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC16LF1519-I/MV Pin Configuration
| Pin 1 | RA0/AN0 — Digital I/O / ADC analog input channel 0 |
| Pin 2 | RA1/AN1 — Digital I/O / ADC analog input channel 1 |
| Pin 3 | RA2/AN2 — Digital I/O / ADC analog input channel 2 |
| Pin 4 | RA3/AN3/VREF+ — Digital I/O / ADC analog input channel 3 / ADC positive reference |
| Pin 5 | RA4/AN4 — Digital I/O / ADC analog input channel 4 |
| Pin 6 | RA5/AN5/SS — Digital I/O / ADC analog input channel 5 / SPI slave select |
| Pin 7 | RA6/OSC2 — Digital I/O / external oscillator output |
| Pin 8 | RA7/OSC1/CLKIN — Digital I/O / external oscillator input / external clock input |
| Pin 9 | VDD — Positive power supply (1.8 V to 3.6 V) |
| Pin 10 | VSS — Ground reference |
| Pin 11 | RB0/AN12/INT — Digital I/O / ADC channel 12 / external interrupt |
| Pin 12 | RB1/AN10/C1IN+ — Digital I/O / ADC channel 10 / comparator non-inverting input |
| Pin 13 | RB2/AN8 — Digital I/O / ADC channel 8 |
| Pin 14 | RB3/AN9/C1OUT — Digital I/O / ADC channel 9 / comparator output |
| Pin 15 | RB4/AN11 — Digital I/O / ADC channel 11 |
| Pin 16 | RB5/AN13 — Digital I/O / ADC channel 13 |
| Pin 17 | RB6/ICSPCLK — Digital I/O / ICD programming clock (in-circuit serial programming) |
| Pin 18 | RB7/ICSPDAT — Digital I/O / ICD programming data |
| Pin 19 | RC0/SOSCO — Digital I/O / secondary oscillator output (32.768 kHz) |
| Pin 20 | RC1/SOSCI — Digital I/O / secondary oscillator input (32.768 kHz) |
| Pin 21 | RC2/AN14 — Digital I/O / ADC channel 14 |
| Pin 22 | RC3/AN15/SCL — Digital I/O / ADC channel 15 / I2C clock |
| Pin 23 | RC4/AN16/SDA — Digital I/O / ADC channel 16 / I2C data |
| Pin 24 | RC5/AN17 — Digital I/O / ADC channel 17 |
| Pin 25 | RC6/AN18/TX/CK — Digital I/O / ADC channel 18 / EUSART async transmit or sync clock |
| Pin 26 | RC7/AN19/RX/DT — Digital I/O / ADC channel 19 / EUSART async receive or sync data |
| Pin 27 | RD0 — Digital I/O port D bit 0 |
| Pin 28 | RD1 — Digital I/O port D bit 1 |
| Pin 29 | RD2 — Digital I/O port D bit 2 |
| Pin 30 | RD3 — Digital I/O port D bit 3 |
| Pin 31 | RD4 — Digital I/O port D bit 4 |
| Pin 32 | RD5 — Digital I/O port D bit 5 |
| Pin 33 | RD6 — Digital I/O port D bit 6 |
| Pin 34 | RD7 — Digital I/O port D bit 7 |
| Pin 35 | RE0/AN20 — Digital I/O / ADC channel 20 |
| Pin 36 | RE1/AN21 — Digital I/O / ADC channel 21 |
| Pin 37 | RE2/AN22 — Digital I/O / ADC channel 22 |
| Pin 38 | RE3/MCLR/VPP — Digital I/O (input only) / Master Clear reset / programming voltage |
| Pin 39 | VDD — Positive power supply (1.8 V to 3.6 V) |
| Pin 40 | VSS — Ground reference |
| Pin EP | EP — Exposed thermal pad - must be soldered to PCB ground for thermal and electrical performance |
Typical Applications
PIC16LF1519-I/MV is suitable for 7 applications: Battery-Powered IoT Sensor Nodes, Consumer Appliance HMI Controllers, Industrial Sensor Hubs and Data Loggers, USB HID Peripherals, Home Automation Lighting Controllers, Medical Monitoring Accessories, Automotive Body Electronics (Non-Safety).
Battery-Powered IoT Sensor Nodes
The PIC16LF1519-I/MV is an excellent fit for battery-powered IoT sensor nodes because of its nanoWatt XLP technology, 1.8 V minimum operating voltage, and Sleep currents below 50 nA typical. The 28 KB Flash supports application code plus a wireless protocol stack (LoRaWAN or Zigbee via an external transceiver), while the 10-bit ADC with up to 28 channels reads multiple sensors without an external MUX. The on-chip HFINTOSC eliminates an external crystal, saving BOM cost and board area for coin-cell designs.
Recommended
Consumer Appliance HMI Controllers
The PIC16LF1519-I/MV drives white-goods and small-appliance human-machine interfaces (HMI) where 36 I/O pins handle keypads, LED indicators, segment-LCD biasing, and relay drivers. Its two 10-bit PWM modules provide dimming for backlights and buzzers, while the EUSART and MSSP peripherals connect to a BLE or Wi-Fi module for smart-home connectivity. The wide 1.8 V to 3.6 V supply tolerance allows direct 3.3 V regulator operation from rectified mains.
Recommended
Industrial Sensor Hubs and Data Loggers
The PIC16LF1519-I/MV aggregates 4 mA to 20 mA industrial loops, RTD sensors, and digital I/O in compact sensor hubs thanks to its 28-channel 10-bit ADC, EUSART (RS-232/RS-485 bridge), and 1 KB RAM buffer. Flash EEPROM endurance of 100 k cycles (per datasheet) supports local non-volatile data logging, while the 36 I/O lines drive opto-isolators and status LEDs. The industrial -40 C to +85 C temperature rating suits factory floor deployments.
Recommended
USB HID Peripherals
The PIC16LF1519-I/MV can be paired with an external USB bridge such as the MCP2221A to implement USB HID peripherals like keyboards, mice, and custom input devices. The 28 KB Flash accommodates HID report descriptors and application logic, while the 36 I/O scan a 20+ key matrix directly without an external key-scan IC. The MCP2221A provides USB-to-UART/I2C bridging with no firmware changes on the PIC side.
Recommended
Home Automation Lighting Controllers
The PIC16LF1519-I/MV executes DALI, 0-10 V dimming, and DMX512 protocols in residential lighting controllers thanks to its EUSART and two MSSP peripherals for multi-protocol bridging. The 10-bit PWM modules generate analog dimming outputs, while 36 I/O pins drive relay banks and rotary encoder inputs. Low Sleep current keeps wall-switch designs within Energy Star standby budgets.
Recommended
Medical Monitoring Accessories
The PIC16LF1519-I/MV reads photoplethysmography (PPG) sensors, thermistors, and accelerometers in wearable medical monitoring accessories where low power and small package are critical. The 10-bit ADC samples pulse oximetry signals while the EUSART streams data to a BLE module. The exposed thermal pad on the UQFN-40 package helps dissipate heat during continuous monitoring, and the 1.8 V operation allows direct Li-ion battery connection through an LDO.
Recommended
Automotive Body Electronics (Non-Safety)
The PIC16LF1519-I/MV (industrial grade, -40 C to +85 C) is suitable for non-safety automotive body electronics such as seat controllers, mirror adjusters, and ambient lighting where AEC-Q100 is not mandated. The EUSART interfaces to LIN bus transceivers, while the 36 I/O drive H-bridge drivers and LED arrays. Designers needing AEC-Q100 qualification should migrate to the PIC16F1519-E/MV automotive variant or a dedicated PIC16F1xxx automotive family member.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1519-I/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1519T-I/MV | PIC16LF1518-I/MV | PIC16F1519-I/MV |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-UQFN (5x5 mm) | 40-UQFN (5x5 mm) - same | 40-UQFN (5x5 mm) - same | 40-UQFN (5x5 mm) - same |
| Flash Program Memory | 28 KB | 28 KB | 16 KB | 28 KB |
| Data SRAM | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes |
| Data EEPROM | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Operating Voltage | 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 |
| Maximum Clock | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| I/O Pins | 36 | 36 | 36 | 36 |
| ADC | 10-bit, 28 ch | 10-bit, 28 ch | 10-bit, 24 ch | 10-bit, 28 ch |
| AEC-Q100 Qualified | No (industrial) | No (industrial) | No (industrial) | No (industrial, see Q1 suffix for automotive) |
Key Differentiators
- Lowest operating voltage in PIC16F151x family (vs PIC16F1519-I/MV)
- Largest Flash memory in PIC16LF151x family (vs PIC16LF1518-I/MV)
- nanoWatt XLP technology for Sleep-current-limited designs (vs PIC16F1519-I/MV)
Design Notes
The 40-pin UQFN (5x5 mm) package features an exposed thermal pad (EP) that MUST be soldered to the PCB ground plane for both thermal dissipation and electrical grounding per the Microchip PIC16LF1519 datasheet section on package information. Solder the EP using an array of vias to the inner ground plane to meet the package's thermal resistance of approximately 28 C/W (4-layer PCB with 1 oz copper). Floating the EP invalidates the datasheet electrical specifications.
Decouple the two VDD pins (pin 9 and pin 39) and the single VSS pin (pin 10) with 100 nF X7R ceramic capacitors placed within 5 mm of each supply pin, plus a bulk 1 uF to 10 uF tantalum or ceramic capacitor on the supply rail. The PIC16LF1519's nanoWatt XLP technology drops to sub-microamp Sleep currents, but a noisy supply will prevent proper wakeup. Use a low-noise LDO such as MCP1700 for battery applications.
Do not configure the MCLR/RE3/VPP pin as a general-purpose output; it is input-only by design and disabling MCLR can lock the part if the configuration bit is set incorrectly. Use the internal HFINTOSC for prototypes to free RA6/RA7 for I/O; switch to an external crystal only when timing accuracy demands it. Confirm CONFIG1 register FOSC setting matches the hardware oscillator mode (HS, XT, or INTOSC) before programming.
Route the ICSPDAT and ICSPCLK lines (RB7/IB7 and RB6/IB6) with care, keeping them away from switching signals and using series resistors of 10 kohm to 100 kohm if the lines are long. When in-circuit debugging, MPLAB X uses these pins as a dedicated programming interface; isolating them with jumpers or FET switches enables in-field firmware updates without removing the MCU.
Compliance Information
RoHS and REACH compliance confirmed by Microchip product page. Industrial -40 C to +85 C temperature grade; no AEC-Q100 qualification on the -I/ suffix - choose -E or -Q1 suffix variants for automotive. Halogen-free status not explicitly listed in verified web data.
