PIC16LF1519-I/P - 8-Bit 20MHz 28KB Flash MCU 40-PDIP | Microchip
MPN: PIC16LF1519-I/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.21 | $3.21 |
| 10 | $2.89 | $28.90 |
| 100 | $2.54 | $254.00 |
| 500 | $2.21 | $1,105.00 |
| 1,000 | $1.99 | $1,990.00 |
PIC16LF1519-I/P Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (RAM), and a rich set of peripherals such as timers, ADC, communication interfaces, and GPIO. Within the semiconductor taxonomy, an MCU belongs to the broader class of integrated circuits, then microcontrollers, then 8-bit microcontrollers, with the PIC16 family from Microchip Technology representing one of the longest-running 8-bit architectures in the industry. The LF prefix denotes a low-voltage (F) variant, while the XLP suffix highlights Microchip's nanoWatt eXtreme Low Power technology for sleep-mode currents below 1 uA.
Key features of the PIC16LF1519-I/P include 28KB Flash with self-programmability, 1.5KB RAM and 256B EEPROM, 10-bit ADC with up to 28 channels, multiple Enhanced USART, MSSP (SPI/I2C), and 10-bit PWM peripherals. The CPU executes most instructions in a single 200ns cycle at 20MHz, while XLP sleep mode draws less than 50 nA typical. An integrated 32kHz internal oscillator and an optional wide-range 16MHz HFINTOSC allow most designs to operate without external crystals.
Typical applications include low-power sensor nodes, battery-powered instrumentation, consumer appliances, LED lighting controllers, automotive body electronics (non-safety), industrial control panels, and USB-to-UART bridges. The wide pin count and generous peripheral set make it suitable as a system supervisor or HMI controller.
When designing with the PIC16LF1519-I/P, ensure the supply rail stays within 1.8V to 3.6V and that the brown-out reset voltage is configured above the minimum operating voltage. Use MPLAB X IDE with XC8 compiler and PICkit or Snap programmer for development. Pin 1 (MCLR) requires a pull-up for normal operation.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in any single manufacturer datasheet, delivering information gain beyond stock product listings.
Drop-in alternatives for PIC16LF1519-I/P — 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/P (same form factor and footprint) — differing in ADC, Package, Core Architecture, MSL Level, I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1519-I/PT
✅ Drop-In✓ In Stock
$1.92 / Unit
View Datasheet →PIC16LF1519-E/P
✅ Drop-In✓ In Stock
$1.96 / Unit
View Datasheet →PIC16LF1518-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1519-E/PT
✅ Drop-In✓ In Stock
$2.46 / Unit
View Datasheet →PIC16LF1517-I/P
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →PIC16LF1519-I/P Maximum Ratings & Electrical Characteristics
| Product Family | PIC® XLP™ 16F |
| Core Architecture | 8-bit PIC RISC |
| CPU Speed (Max) | 20 MHz |
| Program Memory (Flash) | 28 KB (16K x 14) |
| RAM | 1.5 KB |
| EEPROM | 256 B |
| Supply Voltage Range | 1.8 V to 3.6 V |
| I/O Pins | 35 |
| ADC | 10-bit, up to 28 channels |
| PWM | 10-bit |
| Communication Interfaces | EUSART, MSSP (SPI / I2C) |
| Package | 40-pin PDIP (P) |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Mounting Type | Through-Hole |
| Low-Power Technology | nanoWatt XLP |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| MSL Level | 1 (Not Moisture Sensitive) |
PIC16LF1519-I/P Pin Configuration
| Pin 1 | MCLR/VPP — Master Clear (Reset) input / Programming voltage |
| Pin 2 | RA0 — GPIO / analog input AN0 |
| Pin 3 | RA1 — GPIO / analog input AN1 |
| Pin 4 | RA2 — GPIO / analog input AN2 |
| Pin 5 | RA3 — GPIO / analog input AN3 / VREF+ |
| Pin 6 | RA4 — GPIO / analog input AN4 |
| Pin 7 | RA5 — GPIO / analog input AN5 |
| Pin 8 | RA6 — GPIO |
| Pin 9 | RA7 — GPIO |
| Pin 10 | RE0 — GPIO / analog input AN21 |
| Pin 11 | RE1 — GPIO / analog input AN22 |
| Pin 12 | RE2 — GPIO / analog input AN23 |
| Pin 13 | RE3 — GPIO (input only) |
| Pin 14 | VDD — Positive supply (1.8V-3.6V) |
| Pin 15 | VSS — Ground reference |
| Pin 16 | RB0 — GPIO / interrupt-on-change |
| Pin 17 | RB1 — GPIO / interrupt-on-change |
| Pin 18 | RB2 — GPIO / interrupt-on-change |
| Pin 19 | RB3 — GPIO / interrupt-on-change |
| Pin 20 | RB4 — GPIO / interrupt-on-change |
| Pin 21 | RB5 — GPIO / interrupt-on-change |
| Pin 22 | RB6 — GPIO / interrupt-on-change / ICSCLK |
| Pin 23 | RB7 — GPIO / interrupt-on-change / ICSDAT |
| Pin 24 | RC0 — GPIO / analog input AN16 |
| Pin 25 | RC1 — GPIO / analog input AN17 |
| Pin 26 | RC2 — GPIO / analog input AN18 |
| Pin 27 | RC3 — GPIO / analog input AN19 |
| Pin 28 | RC4 — GPIO / analog input AN20 |
| Pin 29 | RC5 — GPIO |
| Pin 30 | RC6 — GPIO / EUSART TX |
| Pin 31 | RC7 — GPIO / EUSART RX |
| Pin 32 | RD0 — GPIO |
| Pin 33 | RD1 — GPIO |
| Pin 34 | RD2 — GPIO |
| Pin 35 | RD3 — GPIO |
| Pin 36 | RD4 — GPIO |
| Pin 37 | RD5 — GPIO |
| Pin 38 | RD6 — GPIO |
| Pin 39 | RD7 — GPIO |
| Pin 40 | VSS — Ground reference |
Typical Applications
PIC16LF1519-I/P is suitable for 7 applications: Battery-Powered Sensor Node, Industrial Control Panel, Consumer Appliance Controller, LED Lighting Controller, Automotive Body Electronics, USB-to-UART Bridge, Medical Monitoring Accessory.
Battery-Powered Sensor Node
The PIC16LF1519-I/P is well suited to battery-powered wireless sensor nodes thanks to its 1.8V-3.6V wide supply and nanoWatt XLP sleep currents below 50 nA typical. The 20MHz PIC RISC core processes sensor samples in microseconds before the firmware returns the device to sleep, and the 28KB Flash holds ZigBee, LoRaWAN, or proprietary stacks alongside application code. The 10-bit ADC with up to 28 channels interfaces directly to temperature, humidity, and battery-voltage sensors without external muxes. In a typical 2xAA battery node, the MCU contributes under 1% of total quiescent draw, enabling multi-year coin-cell lifetimes when paired with duty-cycled radios.
Recommended
Industrial Control Panel
The PIC16LF1519-I/P suits industrial control panel HMIs and PLC expansion modules thanks to 35 I/O pins that drive keypads, LED indicators, character LCDs, and optocouplers directly. Its EUSART and MSSP peripherals support RS-485 / Modbus RTU masters or I2C sensor expansion. Industrial -40C to +85C operation tolerates cabinet environments near motor drives and switching PSUs. The 28KB Flash accommodates menu logic, debounce tables, and Modbus protocol state machines without external memory; the 1.5KB RAM is ample for LCD frame buffers on 4x20 displays.
Recommended
Consumer Appliance Controller
Coffee machines, washing machines, microwave ovens, and air purifiers benefit from the PIC16LF1519-I/P's generous Flash budget, multi-channel 10-bit ADC for thermistor and current sensing, and 10-bit PWM for motor, valve, and heater control. The industrial temperature grade handles under-cabinet thermal stress, while 35 I/O support the keypad, buzzer, triac drivers, and segment LED displays typical in white goods. Wide 1.8V-3.6V operation simplifies designs that run directly from rectified 3.3V rails without additional LDO stages.
Recommended
LED Lighting Controller
Architectural and decorative LED drivers use the PIC16LF1519-I/P to run DMX512, DALI, or proprietary lighting protocols. The EUSART handles DMX at 250 kbaud, while 10-bit PWM channels drive constant-current LED sinks for tunable-white or RGBW strips. With 28KB Flash, designers can implement color-space conversion, fade curves, and OTA firmware updates on-chip. Sleep current under 50 nA keeps standby power well below 0.5W even on 100W-class fixtures, satisfying Energy Star and ErP standby rules.
Recommended
Automotive Body Electronics
Body controllers for window lifters, mirror adjusters, seat controllers, and ambient lighting benefit from the PIC16LF1519-I/P's PWM and ADC resources; note the I/P variant is industrial -40C to +85C, so AEC-Q100 work requires the PIC16LF1519-E/PT or PIC16F1519-E/PT automotive-graded siblings. The PIC16LF1519-I/P remains suitable for non-safety cabin electronics where automotive temperature is not mandated. The 28KB Flash holds LIN slave stacks plus body control state machines, and EUSART drives LIN transceivers directly via UART mode.
Recommended
USB-to-UART Bridge
USB-to-UART bridge dongles for legacy RS-232 equipment, debug consoles, and IoT provisioning tools use the PIC16LF1519-I/P to implement CDC-ACM class firmware. The EUSART handles baud rates up to 921600, while 28KB Flash stores USB descriptors, bootloader, and protocol glue. The wide 1.8V-3.6V supply lets the dongle draw power directly from USB VBUS through a low-drop regulator. With nanoWatt XLP sleep, the dongle draws under 100 uA when the host suspends the USB port.
Recommended
Medical Monitoring Accessory
Personal health and wellness accessories - pulse oximeters, smart thermometers, sleep trackers - leverage the PIC16LF1519-I/P's 10-bit ADC for biosensor analog front-ends and its PWM for LED driver control. The 28KB Flash supports on-device DSP for heart-rate detection algorithms, and nanoWatt XLP keeps battery replacement intervals in the 6-12 month range typical for consumer wearables. The industrial temperature grade handles the thermal stress of skin-contact devices. Note that clinical-grade medical devices typically require additional qualification beyond industrial specs.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1519-I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1519-I/P | PIC16LF1519-E/P | PIC16LF1518-I/P | PIC16LF1519-E/PT | PIC16LF1517-I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-pin PDIP | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same |
| Supply Voltage | 1.8V to 3.6V | 2.3V to 5.5V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V |
| Flash Program Memory | 28 KB | 28 KB | 28 KB | 16 KB | 28 KB | 14 KB |
| RAM | 1.5 KB | 1.5 KB | 1.5 KB | 1 KB | 1.5 KB | 1 KB |
| CPU Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +125C | -40C to +85C |
| I/O Pins | 35 | 35 | 35 | 36 | 36 | 36 |
| RoHS / Lead-Free | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes |
Key Differentiators
- Lowest minimum supply voltage in the 40-PDIP PIC16F151x family (vs PIC16F1519-I/P)
- Largest Flash budget in 40-PDIP PIC16LF151x family (vs PIC16LF1518-I/P)
- Single-supply nanoWatt XLP for coin-cell battery life (vs PIC16LF1517-I/P)
- Industrial temperature grade at standard commercial pricing (vs PIC16LF1519-E/P)
Design Notes
Brown-out reset (BOR) must be configured to trip above the minimum operating voltage of 1.8V. At supply ramp rates below 50 mV/us, BOR reliably triggers a clean reset; faster ramps require the Power-on Reset (POR) path. Decouple VDD with a 100 nF X7R ceramic capacitor placed within 5 mm of the VDD pin, and add a bulk 1-10 uF tantalum or ceramic if the load is dynamic (PWM-driven motors or relays). Tie the MCLR/VPP pin high through a 10 kohm pull-up; floating MCLR causes spurious resets in noisy environments.
Do not exceed the absolute maximum VDD of 4.0V (per datasheet Section 30). Programming voltage on VPP/MCLR must be limited to 9V; a 12V ISP inadvertently applied destroys the device. The LF (low-voltage) variants do NOT tolerate 5V supply - using a PIC16LF part on a 5V rail is a common engineering error that destroys Flash over time. Verify the 'LF' vs 'F' suffix in your BOM against the schematic supply rail.
For through-hole PDIP designs, place a ground plane on the top layer directly under the IC to provide thermal mass and short return paths for the analog and digital sections. Keep analog inputs (AN0-AN28) away from PWM switching traces; route them with a guard ground on both sides. Place the 32.768 kHz crystal traces short and symmetric, with the load capacitors within 3 mm of the OSC pins. If using HFINTOSC, leave the OSC pins floating to avoid stray injection.
Use the ICSP clock and data pins (RB6/ICSCK, RB7/ICSDAT) for in-circuit programming; bring these signals to a 6-pin header alongside MCLR for production programming. Avoid sharing RB6/RB7 with output-only loads if in-circuit programming is required. Place a 100 ohm series resistor in MCLR for production in-circuit programming if the pin is also a reset input.
The PIC16LF1519-I/P in PDIP dissipates under 100 mW even at full CPU and peripheral load; no heatsinking is required. However, junction temperature must stay below +85C for the industrial variant. In enclosed fixtures (downlights, appliance cabinets), derate ambient by the thermal-rise of the enclosure - typical 5-10C rise inside a sealed LED downlight is common. Verify with thermocouple measurement during EMC and thermal chamber validation.
Compliance Information
RoHS and lead-free compliant per Microchip product page; industrial temperature grade only - not AEC-Q100 qualified. For automotive applications use the -E/PICLF1519-E/PT or PIC16F1519-E/PT variant which is AEC-Q100 qualified. Halogen-free per Microchip Material Declaration.
