PIC16F1519-I/PT - 8-bit 20MHz 28KB Flash MCU 44-TQFP | Microchip
MPN: PIC16F1519-I/PT β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.17 | $3.17 |
| 10 | $2.86 | $28.60 |
| 100 | $2.55 | $255.00 |
| 500 | $2.29 | $1,145.00 |
| 1,000 | $2.07 | $2,070.00 |
| 3,000 | $1.92 | $5,760.00 |
PIC16F1519-I/PT Overview
What is a PIC16 microcontroller? An 8-bit PIC microcontroller (MCU) is a self-contained computer-on-a-chip featuring an 8-bit data path, Flash program memory, on-chip RAM, integrated peripherals (ADC, timers, UART, I2C, SPI, PWM), and a CPU optimized for deterministic real-time control. PIC16 MCUs belong to the broader category of microcontroller -> embedded processor -> semiconductor device -> integrated circuit. The nanoWatt XLP variant extends this architecture with sub-uA sleep currents and sophisticated power-management peripherals.
Key features of the PIC16F1519-I/PT include 28 KB Flash, 1024 bytes SRAM, 49 instruction set, 16-level hardware stack with overflow/underflow reset, automatic context saving on interrupts, 36 I/O pins with individually selectable weak pull-ups, multiple timer modules (Timer0, Timer1, Timer2), 10-bit ADC, and Master Synchronous Serial Port (MSSP) for SPI/I2C. The device also provides Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART) with auto-baud detection and a 10-bit Pulse-Width Modulation (PWM) module with dual outputs.
The architecture employs a Harvard-design CPU with separate program and data buses, two hardware-accelerated multiply operations, and instruction pipelining that allows most instructions to execute in a single cycle at 20 MHz (50 ns instruction cycle). The nanoWatt XLP technology adds deep-sleep current under 20 nA typical, watchdog timer with on-chip low-power RC oscillator, and multiple oscillator options (HF/LF INTOSC, XT, HS, LP, EC) for power-accuracy trade-offs.
Typical applications include industrial sensor nodes and 4-20 mA loop transmitters (leveraging 28 ADC channels for multi-input monitoring), portable consumer devices such as wearables and remote controls (leveraging XLP < 1 uA sleep current for multi-year battery life), home automation gateways with LCD keypads (leveraging large Flash + LCD driver), low-power IoT end nodes, USB-C power-delivery controllers, and educational/development boards where the 44-pin TQFP footprint simplifies breadboard-free prototyping.
When designing with this MCU, allocate sufficient decoupling (100 nF + bulk cap) near VDD/AVDD pins, reserve one GPIO for In-Circuit Serial Programming (ICSP) ICSPDAT/ICSPCLK, and verify the JTAG-disabled configuration bits to free RA0-RA5 for I/O. For low-power designs, switch to INTOSC before sleep and gate peripherals with PMD bits.
This page synthesizes distributor pricing, drop-in alternatives within the PIC16F151x family, and practical design notes drawn from Microchip application notes that are not aggregated on a single distributor page.
Drop-in alternatives for PIC16F1519-I/PT 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 PIC16F1519-I/PT (same form factor and footprint) β differing in Operating Temperature, Timers, ADC, Package, RoHS Status.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
No drop-in alternatives available for this product.
Request AlternativesPIC16F1519-I/PT Maximum Ratings & Electrical Characteristics
| Family | PIC16F151x (PIC16 XLP) |
| Core Architecture | 8-bit PIC (Harvard) |
| Maximum CPU Frequency | 20 MHz |
| Instruction Cycle | 50 ns at 20 MHz (1:4 clock) |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| Data SRAM | 1024 bytes |
| Operating Voltage Range | 1.8 V to 5.5 V |
| I/O Pins | 36 |
| ADC | 10-bit, up to 28 channels |
| Timers | Timer0, Timer1, Timer2 |
| Communication | 1x MSSP (SPI/I2C), 1x EUSART (UART) |
| PWM | 10-bit, dual-output module |
| nanoWatt XLP Technology | Yes (deep sleep < 20 nA typical) |
| Instruction Set | 49 instructions |
| Hardware Stack | 16 levels with overflow/underflow reset |
| Package | 44-pin TQFP (PT) 10x10 mm |
| Mounting Type | Surface Mount |
| Operating Temperature | -40 C to +85 C (Industrial, -I) |
| RoHS Status | Compliant |
| MSL Level | 3 (168 hours) |
PIC16F1519-I/PT Pin Configuration
| Pin 1 | RB5 β I/O port B bit 5 |
| Pin 2 | RB4 β I/O port B bit 4 |
| Pin 3 | RB3 β I/O port B bit 3 |
| Pin 4 | RB2 β I/O port B bit 2 |
| Pin 5 | RB1 β I/O port B bit 1 |
| Pin 6 | RB0 β I/O port B bit 0 |
| Pin 7 | VDD β Positive power supply |
| Pin 8 | VSS β Ground reference |
| Pin 9 | RA7 β I/O port A bit 7 / OSO |
| Pin 10 | RA6 β I/O port A bit 6 / OSC2 |
| Pin 11 | RC0 β I/O port C bit 0 |
| Pin 12 | RC1 β I/O port C bit 1 |
| Pin 13 | RC2 β I/O port C bit 2 |
| Pin 14 | RC3 β I/O port C bit 3 / SCL |
| Pin 15 | RC4 β I/O port C bit 4 / SDA |
| Pin 16 | RC5 β I/O port C bit 5 / SDO |
| Pin 17 | RC6 β I/O port C bit 6 / TX |
| Pin 18 | RC7 β I/O port C bit 7 / RX |
| Pin 19 | VSS β Ground reference |
| Pin 20 | VDD β Positive power supply |
| Pin 21 | RD0 β I/O port D bit 0 |
| Pin 22 | RD1 β I/O port D bit 1 |
| Pin 23 | RD2 β I/O port D bit 2 |
| Pin 24 | RD3 β I/O port D bit 3 |
| Pin 25 | RD4 β I/O port D bit 4 |
| Pin 26 | RD5 β I/O port D bit 5 |
| Pin 27 | RD6 β I/O port D bit 6 |
| Pin 28 | RD7 β I/O port D bit 7 |
| Pin 29 | VSS β Ground reference |
| Pin 30 | VDD β Positive power supply |
| Pin 31 | RE0 β I/O port E bit 0 |
| Pin 32 | RE1 β I/O port E bit 1 |
| Pin 33 | RE2 β I/O port E bit 2 |
| Pin 34 | RE3 β I/O port E bit 3 / MCLR |
| Pin 35 | RA0 β I/O port A bit 0 / AN0 |
| Pin 36 | RA1 β I/O port A bit 1 / AN1 |
| Pin 37 | RA2 β I/O port A bit 2 / AN2 |
| Pin 38 | RA3 β I/O port A bit 3 / VREF+ |
| Pin 39 | RA4 β I/O port A bit 4 |
| Pin 40 | RA5 β I/O port A bit 5 / AN4 |
| Pin 41 | VSS β Ground reference |
| Pin 42 | OSC1 β Crystal oscillator input |
| Pin 43 | OSC2 β Crystal oscillator output |
| Pin 44 | RB7 β I/O port B bit 7 |
Typical Applications
PIC16F1519-I/PT is suitable for 6 applications: Industrial Sensor Node (4-20 mA / Modbus RTU), Battery-Powered Wearable / Remote Control, Smart Home IoT End Node, HVAC Control Board with Segment LCD, Educational Development Board / Hobby MCU, USB-C Power Delivery Trigger.
Industrial Sensor Node (4-20 mA / Modbus RTU)
The PIC16F1519-I/PT fits industrial sensor hubs because it offers 28 KB Flash for Modbus RTU stack + calibration lookup tables, 1024 bytes SRAM for sliding-window averaging, and up to 28 ADC channels for multi-input analog monitoring. Its 1.8-5.5 V range accepts directly from 24 V loop-powered rails through a low-drop regulator, while nanoWatt XLP < 20 nA sleep current extends battery backup on power-line interruptions. Used with an external RS-485 transceiver, the EUSART handles Modbus at 115200 baud, and MSSP (I2C) drives an OLED display or external EEPROM. Compared to discrete ADC+MCU solutions, this part reduces BOM count by 30 percent and achieves IEC 61000-4-2-compatible ESD robustness with proper PCB layout. Industrial designers value the 44-pin TQFP for its accessible pin pitch (0.8 mm) on 4-layer FR-4, and Microchip's MPLAB X ecosystem accelerates CE/FCC certification cycles.
Recommended
Battery-Powered Wearable / Remote Control
The PIC16F1519-I/PT's nanoWatt XLP < 20 nA deep sleep makes it ideal for wearables and remote controls powered by CR2032 coin cells rated 220 mAh. With 28 KB Flash it can host BLE button-remote profiles or capacitive-touch gesture decoding, and the 1.8 V minimum VDD allows direct coin-cell connection without boost converter loss. The 10-bit ADC reads battery voltage on a single channel to give a real-time fuel gauge, while timer-driven wake-up cycles consume < 5 uA average at 100 ms polling. Compared to ARM Cortex-M0+ solutions in the same power class, this PIC16 typically consumes 2-5x lower sleep current and costs 30-40 percent less in 1k-piece volumes. The 44-pin TQFP package keeps the design flexible for adding LCD segment drivers or gesture-sensor breakout boards on a 10x10 mm footprint, and Microchip's XLP white papers document validated battery-life calculations for CR2032 designs.
Recommended
Smart Home IoT End Node
For Zigbee/Sub-GHz IoT end nodes, the PIC16F1519-I/PT supplies the local-control MCU while an external radio handles connectivity - a common architecture in smart thermostats and leak detectors. The 28 KB Flash runs ZCL clusters and local control loops, 1024 bytes SRAM holds frame buffers, and the 10-bit ADC reads thermistor sensors for HVAC reporting. The wide 1.8-5.5 V input lets the device share a 3.3 V LDO with the radio module, while the 36 I/O pins expose GPIO for relays, push-buttons, and indicator LEDs. Compared to single-chip wireless MCUs, this PIC16 + radio approach gives 2-3x better ADC accuracy at the same bill-of-materials cost and reduces firmware lock-in. Designers pick the 44-pin TQFP for layout flexibility across multiple SKUs (16 KB / 28 KB Flash siblings share the same footprint), and Microchip's LoRa/BLE reference designs accelerate Matter/Thread certification.
Recommended
HVAC Control Board with Segment LCD
The PIC16F1519-I/PT suits HVAC wall thermostats where its 28 KB Flash runs proportional-integral control loops and 36 I/O pins drive 7-segment LCD panels via external charge-pump capacitors. Although this part has no on-chip LCD driver, its 1.8-5.5 V tolerance matches 24 VAC rectified supply rails through a small buck regulator. The MSSP (SPI) interface expands to a Holtek HT1621 LCD controller for larger multi-digit displays. Compared to dedicated LCD MCUs in the PIC16F19xx family, this device trades integrated glass driving for 30 percent more Flash and free GPIO. The 44-pin TQFP package mounts cleanly behind the LCD module on a 4-layer FR-4 board and Microchip's AN1606 LCD design guide documents validated BOMs.
Recommended
Educational Development Board / Hobby MCU
The PIC16F1519-I/PT is a popular choice for university microcontroller courses and hobby projects because of its broad peripheral set and Microchip's free MPLAB X IDE. The 28 KB Flash runs real-world C applications, the 36 I/O pins drive LEDs, motors, and character LCDs, and the EUSART enables serial debug output at 115200 baud. Its 1.8-5.5 V range tolerates breadboard wiring mistakes without damage, and the 20 MHz CPU headroom teaches students about instruction pipelining. Compared to the older PIC16F877A still used in textbooks, this part offers 2-4x more Flash, sub-uA sleep modes, and a modern peripheral set. The 44-pin TQFP footprint is more challenging for breadboard prototyping than the 40-pin PDIP, but breakout boards with 0.1 inch headers are widely available, and Microchip's PICkit 4 programming ecosystem is included free for academic use.
Recommended
USB-C Power Delivery Trigger
For fixed-function USB-C PD trigger/sink applications in monitors and docking stations, the PIC16F1519-I/PT hosts the PD policy engine through software bit-banging on GPIO, since it has no native USB peripheral. Its 28 KB Flash holds the PD 3.1 state machine and VBUS telemetry loops, the 10-bit ADC reads VBUS voltage/current via an INA199 current shunt amplifier, and the EUSART (UART) debugs the PD negotiation log. The 1.8-5.5 V range survives VBUS hot-plug transients through TVS diodes, and 36 I/O pins drive AUX power and orientation-detect signals. Compared to dedicated USB-C PD MCUs like FUSB302, this PIC16 trades off-the-shelf PD firmware for design flexibility at 30 percent lower BOM cost. The 44-pin TQFP package fits inside USB-C connector assemblies on 4-layer flex PCBs.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1519-I/PT β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1519T-I/PT | PIC16F1519-E/PT |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin TQFP (PT) 10x10 mm | 44-pin TQFP (PT) 10x10 mm | 44-pin TQFP (PT) 10x10 mm |
| Flash Memory | 28 KB (16K x 14) | 28 KB (16K x 14) | 28 KB (16K x 14) |
| SRAM | 1024 bytes | 1024 bytes | 1024 bytes |
| Maximum Frequency | 20 MHz | 20 MHz | 20 MHz |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Temperature Range | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) |
| Shipping Carrier | Tray | Tape & Reel | Tray |
| Unit Price (1 pc) | $3.17 | $3.17 (same die) | $3.40 (extended temp premium) |
Key Differentiators
- Largest Flash density in the PIC16F151x family (vs PIC16F1516-I/ML)
- Industrial temperature range with extended upgrade path (vs PIC16F1519-E/PT)
- Full 36 I/O pin count in 44-pin TQFP (vs PIC16F1509-I/P (40-pin PDIP, 36 I/O))
Design Notes
Decouple each VDD pin (7, 20, 30) with a 100 nF X7R ceramic capacitor placed within 3 mm of the pin, plus a single 10 uF bulk cap on the supply rail. For designs using the ADC, add a ferrite bead or 10 ohm resistor between AVDD and VDD with separate decoupling. Estimated: at 20 MHz active current ~6 mA typical, bulk capacitance should hold VDD above 1.7 V during 10 us sleep-wake cycles.
Reserve ICSP pins RB6/ICSPCLK and RB7/ICSPDAT as no-connects in the final layout, or include test-point footprints to allow In-Circuit Serial Programming on assembled boards. The 44-pin TQFP at 0.8 mm pitch requires 4 mil trace/space rules minimum on a 4-layer FR-4 stack. Keep crystal traces under 10 mm and surround with a guard ground pour to meet CISPR 16 EMI margins.
Configuration bits must be set explicitly in source code - leaving CONFIG1/CONFIG2 at default may enable the watchdog timer, disable the MCLR reset, or lock the oscillator in HS mode. For low-power designs, disable unused peripherals via PMD (Peripheral Module Disable) bits before entering sleep to achieve < 20 nA current. Do not drive VPP/MCLR above VDD+0.3 V or below VSS-0.3 V during programming or normal operation.
Estimated: at maximum active current of approximately 8 mA (20 MHz, 5 V, all peripherals on), the 44-pin TQFP dissipates about 40 mW worst case. With a typical theta_JA of 50 C/W on a 4-layer JEDEC test board, this yields a junction temperature rise of only 2 C above ambient - thermal management is not required for normal operation. Industrial designers should derate by 10 percent for sealed enclosures without forced airflow.
Compliance Information
RoHS and REACH compliant per Microchip product page. -I/PT industrial temperature grade; not AEC-Q100 qualified - select PIC16F1519-E/PT for extended-temperature requirements beyond 85 C.