PIC16LF1619-I/ML - 8-Bit 32MHz XLP MCU 14KB Flash | Microchip
MPN: PIC16LF1619-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.35 | $2.35 |
| 10 | $2.1 | $21.00 |
| 100 | $1.82 | $182.00 |
| 500 | $1.55 | $775.00 |
| 1,000 | $1.32 | $1,320.00 |
PIC16LF1619-I/ML Overview
An 8-bit microcontroller is a single-chip computer built around a CPU with an 8-bit data path, on-chip program memory (Flash/ROM), data RAM, and a rich set of peripheral blocks such as timers, ADC, comparators, PWM, and communication interfaces. The 8-bit MCU sits within the broader hierarchy: microcontroller -> embedded controller -> microprocessor-based system -> semiconductor. The 'LF' prefix indicates the low-power 'F' process variant designed for 1.8 V to 3.6 V operation, ideal for battery-powered or energy-harvesting designs where XLP™ (eXtreme Low Power) sleep currents in the nanoamp range are required.
Key features include 14 KB self-programmable Flash, 1 KB RAM, integrated 10-bit ADC with computation, Configurable Logic Cells (CLC), Complementary Waveform Generator (CWG) for motor drive signals, Zero-Cross Detect (ZCD), and multiple communication peripherals. The 20-QFN package provides a compact 4x4 mm footprint suitable for space-constrained PCB designs.
The PIC16LF1619 architecture uses Microchip's enhanced mid-range core with a 14-bit instruction word and hardware stack. Its peripheral set is tuned for closed-loop applications including BLDC motor commutation, fan control, LED drivers, and PFC control loops. The on-chip 32 MHz internal oscillator eliminates the need for an external crystal in cost-sensitive designs.
Typical applications include small DC and stepper motor control, fan/blower speed controllers, LED lighting drivers, and consumer appliance control boards. The device is also widely used in battery-powered IoT sensor nodes, capacitive touch user interfaces, and general-purpose 8-bit replacement projects.
When designing with this MCU, ensure the supply decoupling network places a 100 nF ceramic bypass capacitor within 3 mm of the VDD pin, with a bulk capacitor of 4.7 µF or larger on the same rail. The exposed thermal pad (EP) on the QFN package must be soldered to the PCB ground plane for mechanical reliability and thermal dissipation.
This page synthesizes distributor pricing, drop-in compatible alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single source for parametric, sourcing, and PCB layout guidance.
Drop-in alternatives for PIC16LF1619-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 PIC16LF1619-I/ML (same form factor and footprint) — differing in Core Architecture, Package, ADC, Program Memory (Flash), PWM Channels.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1618-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF15356-I/ML
✅ Drop-In✓ In Stock
$0.96 / Unit
View Datasheet →PIC16LF1559-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1554-I/ML
✅ Drop-In✓ In Stock
$0.84 / Unit
View Datasheet →PIC16LF15376-I/ML
✅ Drop-In✓ In Stock
$1.32 / Unit
View Datasheet →PIC16LF1619-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1619-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC enhanced mid-range 8-bit |
| Family | PIC® XLP™ 16F |
| Program Memory (Flash) | 14 KB (8K x 14) |
| RAM | 1 KB |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage Range | 1.8 V to 3.6 V |
| ADC | 10-bit with computation |
| Number of I/O Pins | 18 |
| Timers | Multiple 8-bit and 16-bit |
| PWM Channels | Yes (CCP/ECCP) |
| Communication Interfaces | EUSART, I2C, SPI |
| Peripheral Features | CLC, CWG, ZCD, DSM, SMT |
| Package | 20-QFN (4x4 mm) with exposed pad |
| Operating Temperature | -40C to +85C (Industrial) |
| Mounting Type | Surface Mount |
| MSL Level | 1 |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC16LF1619-I/ML Pin Configuration
| Pin 1 | VDD — Positive power supply |
| Pin 2 | RA5 — Digital I/O / ADC input |
| Pin 3 | RA4 — Digital I/O / ADC input |
| Pin 4 | RA3 — Digital I/O / MCLR |
| Pin 5 | RA2 — Digital I/O / ADC input |
| Pin 6 | RA1 — Digital I/O / ADC input / ICSPCLK |
| Pin 7 | RA0 — Digital I/O / ADC input / ICSPDAT |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RA7 — Digital I/O / oscillator |
| Pin 10 | RA6 — Digital I/O / oscillator |
| Pin 11 | RC0 — Digital I/O / PWM |
| Pin 12 | RC1 — Digital I/O / PWM |
| Pin 13 | RC2 — Digital I/O / PWM |
| Pin 14 | RC3 — Digital I/O / PWM |
| Pin 15 | RC4 — Digital I/O |
| Pin 16 | RC5 — Digital I/O |
| Pin 17 | RC6 — Digital I/O / TX |
| Pin 18 | RC7 — Digital I/O / RX |
| Pin 19 | RB7 — Digital I/O |
| Pin 20 | RB6 — Digital I/O / ICSPCLK |
| Pin 21 | EP — Exposed thermal pad - connect to ground plane |
Typical Applications
PIC16LF1619-I/ML is suitable for 6 applications: BLDC and DC Motor Control, Battery-Powered IoT Sensor Nodes, LED Lighting Drivers, Home Appliance Control Boards, Fan and Blower Speed Controllers, Capacitive Touch User Interfaces.
BLDC and DC Motor Control
The PIC16LF1619-I/ML is purpose-built for small BLDC and brushed DC motor control in fans, blowers, and appliance pumps. Its integrated Complementary Waveform Generator (CWG) produces complementary PWM outputs with programmable dead-band delays, eliminating the external gate-driver logic normally required for half-bridge drive. The on-chip Zero-Cross Detect (ZCD) peripheral senses AC line crossings for TRIAC dimming or back-EMF detection, while the 10-bit ADC with computation handles current sensing and overcurrent protection in software. Operating at 32 MHz with 8 MIPS throughput, the core executes PID control loops in under 10 microseconds, and XLP™ sleep currents below 50 nA enable battery-backed standby. Designers place the QFN-20 4x4 mm footprint directly next to the motor driver stage for compact PCB layouts.
Recommended
Battery-Powered IoT Sensor Nodes
The PIC16LF1619-I/ML operates from 1.8 V to 3.6 V with XLP™ technology delivering sleep currents below 50 nA, making it ideal for coin-cell or 2xAA battery IoT sensor nodes expected to last 5+ years. The 32 MHz internal oscillator (±1% calibrated) eliminates the external crystal, reducing BOM cost and board area. The 10-bit ADC with computation autonomously scans and averages sensor channels, waking the core only on threshold crossings via the interrupt-on-change peripherals. The EUSART and I2C interfaces connect to radios like the MRF24J40 or to sensor hubs. A typical weather sensor node wakes every 60 seconds, takes a measurement, transmits via I2C, and returns to sleep, achieving average current draws in the single-digit microamp range on two AA cells.
Recommended
LED Lighting Drivers
The PIC16LF1619-I/ML drives LED strings with constant-current regulation through its CCP/ECCP PWM peripherals and the CWG block. The 10-bit ADC samples a sense resistor in the LED return path, and the core adjusts PWM duty cycle to maintain target current across varying input voltages. Zero-Cross Detect enables AC line TRIAC dimmer compatibility for retrofit bulb designs, while CLCs (Configurable Logic Cells) implement hardware-based fault detection that latches the output off on overcurrent within microseconds. The 1.8 V minimum supply supports direct operation from rectified 5 V or 12 V LED driver rails after buck conversion. Designers benefit from Microchip's free MPLAB X IDE with XC8 compiler and application notes for closed-loop LED dimming algorithms.
Recommended
Home Appliance Control Boards
The PIC16LF1619-I/ML is widely deployed in white-goods control boards for washing machines, dishwashers, and HVAC blowers. Its 18 I/O pins interface with capacitive touch buttons via the mTouch® peripheral, drive seven-segment displays through the CLC, and read temperature sensors via the 10-bit ADC. The CWG and ZCD peripherals handle TRIAC-based heater and valve control directly, while the integrated EUSART connects to the appliance's main controller for status reporting. Operating across -40 °C to +85 °C, the industrial-grade variant survives under-cabinet heat. The 20-QFN 4x4 mm footprint fits comfortably beside power components on mixed-signal PCBs, and the 14 KB Flash supports state-machine firmware with full diagnostics.
Recommended
Fan and Blower Speed Controllers
The PIC16LF1619-I/ML implements closed-loop fan speed control for server fans, HVAC blowers, and CPU coolers. The CCP/ECCP module generates a 25 kHz PWM drive signal to a four-wire fan, while the 10-bit ADC reads the tachometer feedback pulse. The PID loop adjusts duty cycle in firmware to maintain target RPM despite load changes. The CWG block can drive a complementary half-bridge for three-phase BLDC fans without an external gate driver. XLP™ sleep mode cuts current to 50 nA when the fan is idle, supporting Energy Star standby requirements. The QFN-20 package and 32 MHz performance fit in a 10x10 mm daughter board plugged onto the fan hub.
Recommended
Capacitive Touch User Interfaces
The PIC16LF1619-I/ML implements Microchip's mTouch® capacitive touch sensing through the on-chip 10-bit ADC and the CVD (Capacitive Voltage Divider) technique. Up to 12 touch buttons or a slider can be scanned in firmware using the integrated peripherals, eliminating dedicated touch ICs in cost-sensitive designs. The CLC blocks combine touch events with GPIO for hardware-debounced wake-on-touch, allowing the MCU to remain in deep sleep until a finger approaches. The 32 MHz core services up to 12 buttons in under 1 ms, well below the human-perceptible 10 ms response threshold. Combined with XLP™ 50 nA sleep current, the device is ideal for battery-powered remote controls, white-goods front panels, and IoT wall switches.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1619-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1618-I/ML | PIC16LF15356-I/ML | PIC16LF1559-I/ML | PIC16LF1554-I/ML | PIC16LF15376-I/ML |
|---|---|---|---|---|---|---|
| Package | 20-QFN (4x4 mm) | 20-QFN (4x4 mm) - same | 20-QFN (4x4 mm) - same | 20-QFN (4x4 mm) - same | 20-QFN (4x4 mm) - same | 20-QFN (4x4 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 14 KB | 7 KB (-50%) | 14 KB (same) | 14 KB (same) | 7 KB (-50%) | 28 KB (+100%) |
| RAM | 1 KB | 512 B (-50%) | 1 KB (same) | 1 KB (same) | 512 B (-50%) | 2 KB (+100%) |
| Maximum CPU Speed | 32 MHz | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V (same) | 1.8 V to 3.6 V (same) | 1.8 V to 3.6 V (same) | 1.8 V to 3.6 V (same) | 1.8 V to 3.6 V (same) |
| CWG Peripheral | Yes | Yes | Yes (more channels) | No | No | Yes |
| Zero-Cross Detect (ZCD) | Yes | Yes | Yes | No | No | Yes |
| Unit Price (qty 1000) | USD 1.32 | USD ~1.20 | USD ~1.45 | USD ~1.30 | USD ~1.15 | USD ~1.55 |
Key Differentiators
- Integrated CWG and ZCD peripherals (vs PIC16LF1559-I/ML)
- Balanced memory-to-cost ratio (vs PIC16LF1618-I/ML)
- Mature XLP™ ecosystem with broad application support (vs PIC16LF15376-I/ML)
Design Notes
Place a 100 nF ceramic decoupling capacitor within 3 mm of the VDD pin (pin 1) and a 4.7 µF or larger bulk capacitor on the same supply rail. For battery-powered designs using XLP™ sleep modes, add a 10 µF reservoir capacitor to handle the inrush current when the integrated 32 MHz oscillator starts up. The 'LF' voltage range of 1.8 V to 3.6 V requires low-Vdrop LDOs such as MCP1700 for 3.3 V rails.
The 20-QFN package exposes a thermal pad (EP, pin 21) on the underside that must be soldered to a copper ground plane with at least 6 thermal vias to the opposite PCB layer. For motor-control applications where the MCU sits near power FETs, expand the EP copper pour to 100 mm² minimum to keep junction temperature below 85 °C at full 32 MHz operation. Estimate: θJA ≈ 35 °C/W on a standard 4-layer JEDEC test board per Microchip package thermal data.
Route the ICSP clock and data lines (RA1/RA0) directly to a 6-pin header with no series resistors. Place the 32.768 kHz crystal (if used for RTCC) within 5 mm of RA6/RA7 and guard the traces with a ground pour to avoid coupling noise from PWM outputs. The QFN-20 land pattern should use NSMD (non-solder mask defined) pads with 0.2 mm solder mask expansion per Microchip AN233.
Do not float the MCLR pin (RA3) - tie it to VDD through a 10 kΩ pull-up and place a 100 nF cap to ground for noise immunity. Configuring RA3 as a digital I/O disables the reset function; instead use the internal MCLR via the CONFIG register. Avoid configuring ADC channels on shared pins without enabling the digital input buffer disable (DIS_AD_BUF) bit, which prevents shoot-through current.
Compliance Information
RoHS and REACH SVHC compliant per Microchip material declaration. Not AEC-Q100 qualified - choose PIC16F1619-E/ML extended temperature variants for automotive. Halogen-free per IEC 61249-2-21.
