PIC16LF1619T-I/ML - 8-Bit XLP MCU, 14KB Flash, 20-QFN | Microchip
MPN: PIC16LF1619T-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.78 | $1.78 |
| 10 | $1.6 | $16.00 |
| 100 | $1.42 | $142.00 |
| 500 | $1.27 | $635.00 |
| 1,000 | $1.13 | $1,130.00 |
PIC16LF1619T-I/ML Overview
A PIC microcontroller is a compact, self-contained computer-on-a-chip built around a Harvard-architecture RISC core, integrating CPU, Flash, RAM, EEPROM, and a rich set of peripherals (ADC, PWM, timers, communications) into a single IC. PIC16 devices occupy the mid-range tier of Microchip's 8-bit portfolio: more capable than baseline PIC10/PIC12, simpler and lower-cost than PIC18/PIC24. They are widely used in consumer appliances, sensor nodes, motor control, and human-machine interface (HMI) subsystems where deterministic 8-bit performance and ultra-low sleep current are required.
Key features of the PIC16LF1619T-I/ML include the 32 MHz internal oscillator, a 10-bit ADC with multiple channel options, Configurable Logic Cells (CLC), Complementary Waveform Generator (CWG) for half-bridge/half-H control, Numerically Controlled Oscillator (NCO) for precision frequency synthesis, Zero-Cross Detection (ZCD) for AC line sensing, and Peripheral Pin Select (PPS) for flexible I/O mapping. The 'Functional Safety' (FuSa) family of the F-variant adds CRC/Scan, windowed watchdog, and hardware limit timers, which the LF variant does not include.
The LF core uses a 14-bit instruction word optimized for code density and a 2-stage pipeline, allowing deterministic interrupt response around 125 ns at 32 MHz. The XLP deep-sleep current is in the nanoampere range, suiting battery-backed designs. The 20-QFN (4x4) exposed-pad package provides a low thermal resistance path and a compact footprint, while the part operates over the industrial -40C to +85C range and is rated at 1.8V-3.6V VDD.
Typical applications include low-power IoT sensor nodes, white-goods and small-appliance control, LED lighting controllers, fan/pump motor control loops, and battery-powered remote controls. The combination of XLP sleep current, 32 MHz performance, and CLC/NCO peripherals makes the LF1619 well-suited to designs that need analog signal conditioning or precision timing without a separate DSP.
When designing with this device, observe the VDD brown-out and power-on reset sequencing, place the 0.1 uF VDD decoupling capacitor as close to the IC as possible, and expose the EP to a continuous ground copper pour for thermal and electrical performance. For migration to the F-variant, verify that any code paths using FuSa peripherals are re-validated, since those blocks are absent on the LF.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, giving procurement and firmware engineers a single source for sourcing, replacement, and design-in decisions.
Drop-in alternatives for PIC16LF1619T-I/ML — 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 PIC16LF1619T-I/ML (same form factor and footprint) — differing in ADC, Core Architecture, Operating Temperature, Package, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1619-I/ML
✅ Drop-In✓ In Stock
$1.32 / Unit
View Datasheet →PIC16F1619T-I/ML
✅ Drop-In✓ In Stock
$0.92 / Unit
View Datasheet →PIC16F1619-I/ML
✅ Drop-In✓ In Stock
$1.48 / Unit
View Datasheet →PIC16LF1619T-I/SS
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16LF1559T-I/ML
✅ Drop-In✓ In Stock
$1.32 / Unit
View Datasheet →PIC16LF15376-I/ML
✅ Drop-In✓ In Stock
$1.32 / Unit
View Datasheet →PIC16LF1619T-I/ML Maximum Ratings & Electrical Characteristics
| Product Family | PIC16 (mid-range 8-bit) |
| Core Architecture | PIC16 enhanced 8-bit RISC, 14-bit instruction word |
| Maximum CPU Speed | 32 MHz |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 1 KB |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| Operating Temperature | -40 C to +85 C (industrial, 'I' grade) |
| Package | 20-QFN (4x4 mm) with exposed pad |
| Pin Count | 20 |
| ADC | 10-bit, multi-channel |
| Low-Power Branding | eXtreme Low Power (XLP) |
| Special Peripherals | CLC, CWG, NCO, ZCD, PPS |
| Mounting Type | Surface Mount |
| Packaging Format | Tape & Reel ('T' suffix) |
| RoHS Status | Compliant |
| Functional Safety (FuSa) | Not included on LF variant |
PIC16LF1619T-I/ML Pin Configuration
| Pin 1 | RA2 — Bidirectional I/O / analog input |
| Pin 2 | RA3 — Bidirectional I/O / analog input |
| Pin 3 | RA4 — Bidirectional I/O / analog input |
| Pin 4 | RA5 — Bidirectional I/O / analog input |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RA7 — Bidirectional I/O |
| Pin 7 | RA6 — Bidirectional I/O / oscillator |
| Pin 8 | RC0 — Bidirectional I/O |
| Pin 9 | RC1 — Bidirectional I/O |
| Pin 10 | RC2 — Bidirectional I/O |
| Pin 11 | RC3 — Bidirectional I/O |
| Pin 12 | RC4 — Bidirectional I/O |
| Pin 13 | RC5 — Bidirectional I/O |
| Pin 14 | RC6 — Bidirectional I/O |
| Pin 15 | RC7 — Bidirectional I/O |
| Pin 16 | RB7 — Bidirectional I/O |
| Pin 17 | RB6 — Bidirectional I/O / ICD |
| Pin 18 | RB5 — Bidirectional I/O / analog |
| Pin 19 | RB4 — Bidirectional I/O / analog |
| Pin 20 | VDD — Positive supply (1.8V-3.6V) |
Typical Applications
PIC16LF1619T-I/ML is suitable for 6 applications: Battery-Powered IoT Sensor Node, White Goods and Small Appliance Control, LED Lighting Controller, Small Motor and Fan Control, Consumer Remote Control (RF IR), Industrial Sensor Transmitter (4-20mA / 0-10V).
Battery-Powered IoT Sensor Node
The PIC16LF1619T-I/ML fits battery-powered IoT sensor nodes because its 1.8-3.6V VDD range accepts a direct 2xAA or coin-cell supply, and the XLP deep-sleep current is in the nanoampere range per the PIC16(L)F161X datasheet, so the node can sleep between measurements without draining the cell. The 10-bit ADC and Configurable Logic Cells (CLC) on the LF1619 let the firmware condition analog sensor outputs (temperature, humidity, PIR) without an external op-amp or logic gate, shrinking the BOM. The 14KB Flash holds a small protocol stack (Modbus RTU, custom sub-GHz driver, or simple BLE HCI bridge) and the 1KB RAM is sufficient for queuing 10-20 sensor samples between transmissions. Compared with a 32-bit Cortex-M0+ part, the PIC16 delivers deterministic interrupt latency around 125 ns at 32MHz and lower cost in low-volume production.
Recommended
White Goods and Small Appliance Control
The PIC16LF1619T-I/ML is a strong fit for white-goods and small-appliance control boards, where the appliance is mains-powered and the MCU runs from a 3.3V or 5V rail. The 32MHz PIC16 core provides 8 MIPS, enough for PID temperature loops, button-debounce state machines, and UART links to a UI display. The Complementary Waveform Generator (CWG) and Numerically Controlled Oscillator (NCO) peripherals simplify brushless-DC and universal-motor control loops used in blenders, washing-machine pumps, and small fans. The 20-QFN (4x4) footprint keeps the MCU footprint under 16 mm^2, leaving room for the power-supply and relay-driver circuitry on the same PCB. The wide -40C to +85C industrial range survives the cabinet temperature swings found in ovens and dryers.
Recommended
LED Lighting Controller
The PIC16LF1619T-I/ML suits dimmable LED lighting controllers because the CWG peripheral can generate 16-bit PWM at low frequencies for LED dimming, and the NCO can synthesize precise dim-to-warm or color-mixing dither patterns without burdening the CPU. The 10-bit ADC samples a 0-3.3V analog dim input or a digital potentiometer wiper, while the EUSART handles DMX-512 or DALI bridge logic. The 1.8-3.6V VDD range matches a buck-converter output rail, removing the need for an LDO downstream of the switching stage. With 14KB Flash, the firmware can store multiple lighting scenes and a simple non-volatile trim, and the 1KB RAM is sufficient for frame buffers in single-channel or 3-channel RGBW applications. Compared with a 5V MCU, the LF1619 dissipates less power across the linear regulator and extends the product's thermally-constrained bulb lifetime.
Recommended
Small Motor and Fan Control
The PIC16LF1619T-I/ML is well matched to small DC-motor and fan control loops. The CWG and NCO peripherals generate complementary PWM with dead-band control, eliminating the external gate-driver logic that a discrete PIC10/PIC12 design would require. The ZCD (Zero-Cross Detect) input lets the firmware sense AC-line zero crossings for triac-firing or PFC control, with a hardware trigger that wakes the MCU from sleep. The 32MHz core and 8 MIPS performance are sufficient to run a 1kHz commutation loop and a UART link to a host controller simultaneously. The 20-QFN (4x4) package reduces board area in space-constrained 40mm or 50mm fan housings, and the -40C to +85C industrial rating covers under-hood and outdoor-ventilation use cases.
Recommended
Consumer Remote Control (RF IR)
The PIC16LF1619T-I/ML fits consumer remote controls because the XLP deep-sleep current is in the nanoampere range, so a coin-cell-powered remote can sit on a shelf for years. The CWG peripheral drives an IR LED with a 38kHz carrier at near-50% duty, while the INT/IC peripherals decode the return signal. The PPS block routes the UART, SPI, or I2C pins to any digital I/O, simplifying the PCB layout of a button-matrix scan plus an OLED display. The 14KB Flash holds a manufacturer-specific IR protocol table (RC5, NEC, SIRC) and the 1KB RAM is enough for a 32-frame button-event buffer. The 20-QFN (4x4) package keeps the remote slim and light versus a 28- or 40-pin alternative.
Recommended
Industrial Sensor Transmitter (4-20mA / 0-10V)
The PIC16LF1619T-I/ML is appropriate for industrial 4-20mA and 0-10V sensor transmitters where the sensor is loop-powered at 24V and the MCU runs from a local 3.3V LDO. The 10-bit ADC with internal reference and PGA reads bridge or RTD sensors at high accuracy, while the CLC builds a sigma-delta modulator for a lower-cost 16-bit effective reading. The EUSART drives an RS-485 link to a PLC or to a HMI display. The -40C to +85C industrial range covers outdoor and cabinet-mounted transmitters, and the 14KB Flash is sufficient for calibration tables and linearization routines. The 20-QFN (4x4) package fits inside a standard industrial transmitter housing, and the exposed pad provides the thermal dissipation needed for Class A performance over the full industrial temperature range.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1619T-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1619-I/ML | PIC16F1619T-I/ML | PIC16F1619-I/ML | PIC16LF1559T-I/ML | PIC16LF15376-I/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-QFN (4x4) with EP | 20-QFN (4x4) - same | 20-QFN (4x4) - same | 20-QFN (4x4) - same | 20-QFN (4x4) - same | 20-QFN (4x4) - same |
| Flash Memory | 14 KB | 14 KB | 14 KB | 14 KB | 14 KB | 28 KB |
| RAM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 2 KB |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage (VDD) | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Functional Safety (FuSa) Peripherals | No (LF variant) | No | Yes (CRC/Scan, WWDT, HLT) | Yes | No | No |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Packaging Format | Tape & Reel | Tube | Tape & Reel | Tube | Tape & Reel | Tube |
Key Differentiators
- Tape & Reel packaging format with full LF-spec low-voltage operation (vs PIC16LF1619-I/ML)
- Lower-voltage VDD range (1.8V-3.6V) for direct battery operation (vs PIC16F1619T-I/ML)
- Smaller Flash footprint for lower-power sensor nodes (vs PIC16LF15376-I/ML)
Design Notes
Place a 0.1 uF X7R ceramic decoupling capacitor within 3 mm of the VDD pin (pin 20) and a 10 uF bulk capacitor on the same 3.3V rail, per the PIC16(L)F161X datasheet 'Power Supply Recommendations' section. The LF variant's BOR (Brown-Out Reset) triggers near 1.7V - verify that downstream rails do not collapse when VDD dips, otherwise configure BOR with PWRT enabled. The exposed pad (EP) on the 20-QFN (4x4) must be soldered to a continuous ground copper pour to meet the package's thermal resistance spec.
Estimated: at 32 MHz, 3.3V VDD, the PIC16LF1619T-I/ML core current is around 4 mA (per XLP datasheet curves), so power dissipation is approximately 13 mW. The 20-QFN (4x4) with EP on a 1 oz copper pour of 1 square inch keeps theta_JA below 50 C/W, so junction temperature rise above 25C ambient is under 1C - well within the 85C industrial ceiling. Forced-air or heatsink is not required; however, soldering the EP to the ground pour is mandatory.
Do not program the PIC16LF1619T-I/ML above 3.6V VDD - the LF F-process variant has lower Flash endurance and may exhibit data retention loss above the abs-max. The PPS peripheral pin select registers lock on first write after a POR - commit all PPS assignments in the init routine, not at runtime, or you will need a power cycle. The MSSP (SPI/I2C) module pins default to analog mode on reset; clear the corresponding ANSEL bits before bringing up the bus, otherwise the lines will not toggle. Finally, the LF variant does NOT include the FuSa peripherals of the F - if your code paths call CRC, WWDT, or HLT, port to the PIC16F1619T-I/ML.
Use a 4-layer PCB stack-up with a dedicated ground plane under the 20-QFN (4x4) exposed pad. Keep the ICSP/ICD pins (RB6/RB7) accessible with test points or header pads for in-circuit programming. Route the 32 kHz low-power crystal (if used) with short traces and a guard ring to minimize stray capacitance that can pull the oscillator off-frequency. Keep ADC analog traces (RA2-RA5) away from PWM outputs (RC1/RC2) to avoid digital switching noise coupling into the analog input.
Compliance Information
RoHS and REACH compliance per Microchip product page. Not AEC-Q100 qualified - the LF1619 targets industrial and consumer applications; the automotive PIC16F1619 family is the AEC-Q100 path. Lead-free / matte-tin finish confirmed. Halogen-free status not explicitly stated in verified data; consult Microchip for confirmation. Conflict-minerals declaration available from Microchip compliance portal.
