PIC16LF1619-I/SS - 8-bit MCU, 32MHz, 14KB Flash, 20-SSOP | Microchip
MPN: PIC16LF1619-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.62 | $1.62 |
| 10 | $1.49 | $14.90 |
| 100 | $1.31 | $131.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $1.05 | $1,050.00 |
PIC16LF1619-I/SS Overview
An 8-bit microcontroller (MCU) is a compact processor integrating a CPU, non-volatile program memory (Flash), volatile data memory (RAM), peripherals, and I/O on a single CMOS die. The PIC16F family uses Microchip's enhanced mid-range 8-bit core with a 14-bit instruction word and a Harvard architecture that separates program and data buses, allowing simultaneous instruction fetch and operand access. The 'LF' prefix indicates a low-Fowler-Norheim, low-voltage variant; the '1619' suffix marks a specific peripheral mix within the PIC16(L)F161x family.
Key features include a 10-bit Analog-to-Digital Converter (ADC), 24-bit Signal Measurement Timer (SMT) for precise time and pulse measurement, Zero-Cross Detection (ZCD) for AC line-synchronized switching, Configurable Logic Cell (CLC) for hardware-state-machine customization, Windowed Watchdog Timer (WWDT) with software-independent safety, Cyclic Redundancy Check (CRC) for memory integrity, and Core Independent Peripherals (CIPs) that operate without CPU intervention. The XLP (eXtreme Low Power) designation delivers nanoWatt sleep currents suitable for battery-powered or energy-harvesting products.
Architecture-wise, the device pairs the PIC16 enhanced mid-range core with a 32MHz internal oscillator, 16-level hardware stack, and direct/indirect addressing modes. The on-chip peripherals are interconnected through a Peripheral Pin Select (PPS) matrix that allows digital functions to be remapped to most I/O pins, simplifying PCB routing when the default pinout is suboptimal.
Typical applications include low-power motor control, fan and pump speed regulation, AC zero-cross switching for solid-state relays (SSR), LED lighting with dimming and color mixing, sensor signal conditioning, IoT edge nodes, and battery-powered instrumentation. The combination of ZCD, SMT, and CLC is particularly valuable in small BLDC and brushed-DC motor control loops where deterministic timing is required.
When designing with this part, evaluate whether the 14KB Flash and 1KB RAM are sufficient for the firmware footprint and runtime variables. For designs that exceed this memory budget, the PIC16(L)F1615/9 family offers larger pin counts and memories; for designs that need additional analog channels or higher PWM resolution, consider migrating to the PIC18F or dsPIC33 families. The 'I' suffix denotes the industrial -40C to +85C operating temperature range, and the '/SS' suffix denotes the 20-pin SSOP package.
This page synthesizes distributor pricing, drop-in alternatives from Microchip's PIC16 family, and practical design notes for embedded motor-control and low-power applications that are not consolidated in the manufacturer datasheet.
Drop-in alternatives for PIC16LF1619-I/SS — 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/SS (same form factor and footprint) — differing in ADC, Package, Core Architecture, Program Memory (Flash), I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1618-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1619-I/SS
✅ Drop-In✓ In Stock
$1.8 / Unit
View Datasheet →PIC16LF1619-I/ML
✅ Drop-In✓ In Stock
$1.32 / Unit
View Datasheet →PIC16LF1579-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1518-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1508-E/SS
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16LF1575-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1619-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC (enhanced mid-range, 14-bit instruction word) |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 1024 bytes |
| Operating Frequency | Up to 32 MHz (internal oscillator) |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| Operating Temperature Range | -40 C to +85 C (industrial, 'I' suffix) |
| ADC | 10-bit |
| Signal Measurement Timer (SMT) | 24-bit |
| Zero-Cross Detection (ZCD) | Yes |
| Windowed Watchdog Timer (WWDT) | Yes |
| Configurable Logic Cell (CLC) | Yes |
| Cyclic Redundancy Check (CRC) | Yes (memory integrity) |
| Peripheral Pin Select (PPS) | Yes |
| XLP (eXtreme Low Power) | Yes - nanoWatt sleep mode |
| Package | 20-pin SSOP (R-PDSO-G20), 0.635 mm pitch |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant (lead-free finish) |
PIC16LF1619-I/SS Pin Configuration
| Pin 1 | RA3/AN3/T1G/nSS — GPIO RA3 / ADC ch3 / Timer1 gate / SPI slave select (PPS) |
| Pin 2 | RA4/AN4/T1OSC — GPIO RA4 / ADC ch4 / Timer1 oscillator |
| Pin 3 | RA5/AN5/DAC1OUT/ZCD — GPIO RA5 / ADC ch5 / DAC1 output / Zero-Cross Detect |
| Pin 4 | RA6/OSC2/CLKOUT — GPIO RA6 / oscillator output / CLKOUT |
| Pin 5 | RA7/OSC1/CLKIN — GPIO RA7 / oscillator input / CLKIN |
| Pin 6 | VSS — Ground reference |
| Pin 7 | VDD — Positive supply voltage (1.8V to 3.6V) |
| Pin 8 | RB4/AN10/CWG1A — GPIO RB4 / ADC ch10 / CWG1 output A |
| Pin 9 | RB5/AN11/CWG1B — GPIO RB5 / ADC ch11 / CWG1 output B |
| Pin 10 | RB6/ICSPCLK — GPIO RB6 / ICD3 Serial Programming Clock |
| Pin 11 | RB7/ICSPDAT — GPIO RB7 / ICD3 Serial Programming Data |
| Pin 12 | RC0/SOSC1 — GPIO RC0 / Secondary oscillator (32.768kHz) |
| Pin 13 | RC1/SOSC2 — GPIO RC1 / Secondary oscillator complement |
| Pin 14 | RC2/AN6 — GPIO RC2 / ADC ch6 |
| Pin 15 | RC3/AN7 — GPIO RC3 / ADC ch7 |
| Pin 16 | RC4/AN8 — GPIO RC4 / ADC ch8 |
| Pin 17 | RC5/AN9 — GPIO RC5 / ADC ch9 |
| Pin 18 | RC6/AN12 — GPIO RC6 / ADC ch12 |
| Pin 19 | RC7/AN13 — GPIO RC7 / ADC ch13 |
| Pin 20 | RA0/AN0 — GPIO RA0 / ADC ch0 / ICSPDAT |
Typical Applications
PIC16LF1619-I/SS is suitable for 6 applications: Low-Power BLDC and Brushed-DC Motor Control, AC Solid-State Relay (SSR) with Zero-Cross Switching, Smart LED Lighting and Color Mixing, Battery-Powered IoT Sensor Nodes, Small Appliance and Fan Speed Control, Industrial Sensor Signal Conditioning.
Low-Power BLDC and Brushed-DC Motor Control
The PIC16LF1619-I/SS fits small motor-control designs by combining a 32MHz PIC16 enhanced mid-range core with hardware timing peripherals that offload deterministic CPU work. The 24-bit Signal Measurement Timer (SMT) captures zero-cross and back-EMF edges in hardware, freeing the core for state-machine execution. Zero-Cross Detection (ZCD) synchronizes TRIAC or IGBT switching to the AC line for smooth torque and reduced EMI. Four Configurable Logic Cells (CLC) implement sensorless commutation tables without firmware loops. With 14KB Flash and 1KB RAM, the device holds small lookup tables for sinusoidal commutation while leaving room for a fault-handling state machine. XLP nanoWatt sleep drops quiescent current below 1uA in standby.
Recommended
AC Solid-State Relay (SSR) with Zero-Cross Switching
The PIC16LF1619-I/SS is well-suited for zero-cross solid-state relays that switch AC loads without injecting switching transients into the mains. The on-chip Zero-Cross Detection (ZCD) peripheral directly senses the AC line through a high-impedance divider, generating an interrupt at each zero-voltage crossing without external comparator hardware. The 24-bit SMT measures the half-cycle period for line-frequency compensation (50Hz vs 60Hz). The Windowed Watchdog Timer (WWDT) provides IEC60730 Class B safety compliance for household appliances. With 14KB Flash, designers can implement soft-start, surge-current limiting, and over-temperature foldback in firmware. The 1.8V-3.6V supply simplifies operation from a capacitive-dropper power supply.
Recommended
Smart LED Lighting and Color Mixing
The PIC16LF1619-I/SS drives smart-bulb and downlight designs that combine constant-current LED drivers with wireless control. The 10-bit ADC reads color-temperature sensors and ambient-light sensors for closed-loop CCT adjustment; PWM outputs generate precise dimming curves across 16 bits. Zero-Cross Detection enables phase-angle TRIAC dimmer compatibility for retrofit bulbs. Four CLCs implement color-mixing combinational logic in hardware, allowing the core to sleep between wireless commands. XLP nanoWatt sleep drops below 100nA in standby, enabling years of battery life in wireless remote controls. The 14KB Flash holds DMX-512 or DALI protocol stacks plus lighting state machines.
Recommended
Battery-Powered IoT Sensor Nodes
The PIC16LF1619-I/SS is a strong fit for battery-powered sensor nodes that spend most of their time in sleep and wake on interrupt. The XLP nanoWatt technology delivers sub-100nA sleep currents, allowing multi-year operation from a single CR2032 coin cell. The 10-bit ADC reads temperature, humidity, or gas sensors with on-chip acquisition timers. The 24-bit SMT measures pulse widths from ultrasonic or time-of-flight sensors with sub-microsecond resolution. Configurable Logic Cells (CLC) wake the core on a sensor threshold crossing without firmware intervention. The 1.8V minimum VDD enables operation down to a depleted battery cell, extracting the last usable energy. The 14KB Flash holds a small LoRaWAN or BLE-beacon stack plus sensor-fusion logic.
Recommended
Small Appliance and Fan Speed Control
The PIC16LF1619-I/SS controls small appliance fan motors where precise speed regulation under varying load is required. The 24-bit SMT captures tachometer pulses from Hall-effect sensors for closed-loop RPM control. The 10-bit ADC reads motor current through a sense resistor for stall detection. Zero-Cross Detection synchronizes TRIAC phase control for AC fans. The Windowed Watchdog Timer with independent clock source provides IEC 60730 functional safety for unattended appliances. Four PWM channels drive multi-fan control with phase-shifted switching for reduced acoustic noise. The 14KB Flash holds adaptive speed-control algorithms and user-interface state machines for buttons and LED indicators.
Recommended
Industrial Sensor Signal Conditioning
The PIC16LF1619-I/SS conditions analog sensor signals in industrial 4-20mA loops and bridge-sensor applications. The 10-bit ADC reads differential signals through on-chip op-amps (where configured), eliminating external signal-conditioning circuitry. CRC peripheral validates data integrity before transmission over SPI or I2C to a host controller. The 24-bit SMT measures PWM sensor outputs and pulse-train interfaces with sub-microsecond resolution. Windowed Watchdog Timer resets the device if firmware execution stalls within a software-controlled window. The 1.8V-3.6V range simplifies battery-backed industrial sensor operation. The 14KB Flash holds linearization lookup tables for thermocouple and RTD sensors across the industrial -40C to +85C range.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1619-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1618-I/SS | PIC16F1619-I/SS | PIC16LF1579-I/SS | PIC16LF1518-I/SS | PIC16LF1575-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-pin SSOP (R-PDSO-G20) | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin SSOP - same |
| Flash Memory | 14 KB | 7 KB (-50%) | 14 KB (same) | 14 KB (same) | 28 KB (+100%) | 14 KB (same) |
| RAM | 1024 bytes | 512 B (-50%) | 1024 B (same) | 1024 B (same) | 2048 B (+100%) | 1024 B (same) |
| Supply Voltage (VDD) | 1.8V to 3.6V | 1.8V to 3.6V (same) | 2.3V to 5.5V | 1.8V to 3.6V (same) | 1.8V to 3.6V (same) | 1.8V to 3.6V (same) |
| Zero-Cross Detection (ZCD) | Yes | Yes | Yes | No | No | No |
| 24-bit Signal Measurement Timer | Yes | Yes | Yes | No | No | No |
| Configurable Logic Cell (CLC) | Yes (4x CLC) | Yes | Yes | Yes | No | No |
| Windowed Watchdog Timer (WWDT) | Yes | Yes | Yes | No | No | No |
| CRC Peripheral | Yes | Yes | Yes | No | No | No |
Key Differentiators
- On-chip Zero-Cross Detection (ZCD) eliminates external comparator hardware (vs PIC16LF1579-I/SS)
- 24-bit Signal Measurement Timer (SMT) delivers sub-microsecond pulse timing (vs PIC16LF1518-I/SS)
- Configurable Logic Cells (CLC) implement hardware state machines without firmware (vs PIC16LF1575-I/SS)
- Windowed Watchdog Timer (WWDT) provides IEC 60730 Class B safety compliance (vs PIC16LF1618-I/SS)
Design Notes
The PIC16LF1619-I/SS supports VDD from 1.8V to 3.6V. For designs operating near the 3.6V maximum, add a 100nF decoupling capacitor adjacent to pin 7 (VDD) and a 10uF bulk capacitor at the supply rail entry. Place a ferrite bead in series with VDD if the supply is shared with a switching converter or inductive load. Verify brown-out reset (BOR) is enabled in CONFIG2 to ensure predictable startup below the 1.8V minimum.
Place the 20-pin SSOP decoupling capacitor as close to VDD (pin 7) as possible with a short, wide trace. Route ICSP lines PGC/RB6 (pin 10) and PGD/RB7 (pin 11) away from noisy switching nodes and provide a 4-pin header footprint for in-circuit serial programming. Use a ground plane on the top or bottom layer directly under the SSOP body to provide thermal dissipation and EMI shielding. Keep analog traces (RA3-RA5, RC2-RC7) routed away from PWM outputs to minimize ADC coupling.
Common pitfalls when designing with the PIC16LF1619-I/SS: (1) the LF variant only operates down to 1.8V - the F variant requires 2.3V minimum, so do not substitute LF and F parts without verifying the supply rail; (2) the MCLR pin (typically pin 1 on PIC16, but here mapped via PPS on this 20-pin variant) must not be left floating if not used - tie through a 10k resistor to VDD; (3) ICSP pins RB6/RB7 must be available for programming - if reused for application I/O, add isolation resistors so the programmer can override; (4) the 32MHz internal oscillator has a calibration drift of approximately +/-2% over temperature - use the secondary 32.768kHz oscillator (RC0/RC1) for RTC timing-critical applications.
The PIC16LF1619-I/SS in 20-pin SSOP has a thermal resistance (theta_JA) of approximately 90 C/W on a 2-layer JEDEC test board. At maximum operating frequency (32MHz) and 3.6V VDD, the core current is approximately 4 mA, dissipating 14 mW - well within thermal limits for the industrial -40C to +85C range. In high-temperature enclosed designs above 70C ambient, derate by 11 mW per degree above 25C, or migrate to the QFN package (PIC16LF1619-I/ML) for better thermal performance.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - choose AEC-Q100 qualified parts (e.g., PIC16F1619-E/SS extended grade) for automotive designs. Industrial -40C to +85C operating temperature range.
