PIC16LF1574-I/JQ - 8-bit MCU 7KB Flash 12 I/O UQFN-16 | Microchip
MPN: PIC16LF1574-I/JQ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.45 | $1.45 |
| 10 | $1.32 | $13.20 |
| 100 | $1.18 | $118.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.94 | $940.00 |
PIC16LF1574-I/JQ Overview
An 8-bit microcontroller is a single-chip computer that combines a CPU, program memory (Flash/ROM), data memory (RAM), and peripheral set on one die. Within the broader hierarchy it belongs to the PIC16 family, which itself sits inside the Microchip 8-bit MCU product tree and the wider category of embedded microcontrollers and semiconductors. The 'LF' prefix indicates a low-voltage Flash variant, while '1574' identifies its position in the PIC16F157x series that introduced the 10-bit ADC and Complementary Waveform Generator (CWG) peripherals to the mid-range lineup.
Key features include a 32 MHz internal oscillator with ±1% accuracy over the full -40 °C to +85 °C industrial temperature range, on-board 10-bit ADC, PWM, CWG, and multiple communication peripherals in a tiny UQFN-16 (4x4 mm) footprint. The ultra-small package enables designers to place the MCU in space-constrained sensor nodes, LED lighting modules, and consumer wearable products where every square millimeter counts.
Internally, the PIC16LF1574-I/JQ implements Microchip's enhanced mid-range 14-bit instruction set with a 16-level hardware stack and 31-instruction opcode map, providing deterministic interrupt latency and predictable execution timing. The integrated Core Independent Peripherals (CIPs) - including the CWG and Numerically Controlled Oscillator (NCO) - offload waveform generation from the CPU, allowing it to remain in sleep mode for extended periods and reducing average current draw below typical sleep currents of 30 nA.
Typical applications include IoT sensor nodes, battery-powered home automation devices, LED lighting controllers, low-power wireless sensor platforms, small appliances, and general-purpose embedded control. Designers also use this part as a cost-effective co-MCU in mixed-signal systems where its small footprint simplifies PCB layout.
When designing with this device, ensure the UQFN-16 thermal pad is soldered to a sufficient copper pour for mechanical reliability and thermal dissipation. Although the part is rated for industrial temperatures, desoldering or rework on the UQFN package is more challenging than on QFP packages - plan assembly tooling and inspection sequences accordingly.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, giving engineers a single decision-making resource.
Drop-in alternatives for PIC16LF1574-I/JQ — 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 PIC16LF1574-I/JQ (same form factor and footprint) — differing in Program Memory (Flash), Package, Operating Temperature, Core, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1574-E/JQ
✅ Drop-In✓ In Stock
$0.58 / Unit
View Datasheet →PIC16LF1575-I/JQ
✅ Drop-In✓ In Stock
$1.04 / Unit
View Datasheet →PIC16F1574-I/JQ
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF15324-I/JQ
✅ Drop-In✓ In Stock
$0.81 / Unit
View Datasheet →PIC16LF1454-I/JQ
✅ Drop-In✓ In Stock
$1.13 / Unit
View Datasheet →PIC16LF15325-I/JQ
✅ Drop-In✓ In Stock
$0.99 / Unit
View Datasheet →PIC16LF1574-I/JQ Maximum Ratings & Electrical Characteristics
| Core | PIC16 enhanced mid-range 8-bit |
| Maximum Clock Frequency | 32 MHz |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data RAM | 512 bytes |
| Data EEPROM | Not specified in web data |
| Number of I/O Pins | 12 |
| ADC Resolution | 10-bit |
| ADC Channels | Up to 8 |
| Operating Supply Voltage | 1.8 V to 3.6 V |
| Operating Temperature | -40 °C to +85 °C |
| Package / Case | 16-UQFN (4x4 mm) |
| Mounting Style | SMD/SMT |
| Packaging | Tube |
| Data Bus Width | 8-bit |
| Series | PIC16F157x |
| RoHS Status | Compliant (per distributor listings) |
PIC16LF1574-I/JQ Pin Configuration
| Pin 1 | RA5 — Bidirectional I/O / ADC channel |
| Pin 2 | RA4 — Bidirectional I/O / ADC channel |
| Pin 3 | RA3 — Bidirectional I/O / MCLR |
| Pin 4 | RA2 — Bidirectional I/O / ADC channel |
| Pin 5 | RA1 — Bidirectional I/O / ADC channel / ICSPCLK |
| Pin 6 | RA0 — Bidirectional I/O / ADC channel / ICSPDAT |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA7 — Bidirectional I/O / oscillator |
| Pin 9 | RA6 — Bidirectional I/O / oscillator |
| Pin 10 | RC0 — Bidirectional I/O |
| Pin 11 | RC1 — Bidirectional I/O |
| Pin 12 | RC2 — Bidirectional I/O |
| Pin 13 | RC3 — Bidirectional I/O |
| Pin 14 | RC4 — Bidirectional I/O |
| Pin 15 | RC5 — Bidirectional I/O |
| Pin 16 | VDD — Positive supply (1.8 V to 3.6 V) |
Typical Applications
PIC16LF1574-I/JQ is suitable for 6 applications: IoT Battery-Powered Sensor Nodes, LED Lighting Controllers, Small Appliance Control Boards, Wearable Health and Fitness Devices, Home Automation Switch Panels, Industrial Sensor Transmitters.
IoT Battery-Powered Sensor Nodes
The PIC16LF1574-I/JQ's 1.8 V to 3.6 V low-voltage operation, 32 MHz internal oscillator, and Core Independent Peripherals (CWG, NCO) make it well suited for IoT sensor nodes running from coin-cell or 2x AA batteries. The 12 I/O pins and 10-bit ADC handle temperature, humidity, and battery-voltage sensing with sleep currents as low as 30 nA, enabling multi-year battery life. It can communicate via UART to an external LoRa, BLE, or Sub-GHz radio module while the MCU remains in sleep between measurements.
Recommended
LED Lighting Controllers
The PIC16LF1574-I/JQ integrates Complementary Waveform Generator (CWG) and PWM peripherals ideal for driving high-brightness LED strings and RGB color-mixing channels. Its 32 MHz core supports smooth dimming curves and color-temperature transitions while the small UQFN-16 (4x4 mm) package fits inside GU10 spotlight bulbs and linear LED fixtures. The 1.8 V minimum supply is compatible with single-cell Li-ion battery-powered decorative lights and emergency lighting applications.
Recommended
Small Appliance Control Boards
The PIC16LF1574-I/JQ's 7 KB Flash, 512 B RAM, and 10-bit ADC provide sufficient headroom for small appliance controllers such as fans, coffee makers, humidifiers, and personal-care devices. The 12 I/O pins drive triac interfaces, button matrices, and 7-segment or LED status indicators. Its industrial temperature range (-40 °C to +85 °C) handles the thermal environment of kitchen and bathroom appliances without additional cooling.
Recommended
Wearable Health and Fitness Devices
Wearable bands and fitness trackers benefit from the PIC16LF1574-I/JQ's tiny UQFN-16 (4x4 mm) footprint and sub-microamp sleep current, which together maximize PCB area for the battery and heart-rate sensor. The 32 MHz core runs basic step-counting algorithms and the 10-bit ADC reads optical pulse-oximetry signals. Its 1.8 V minimum supply is compatible with rechargeable Li-Po cells common in compact wearables.
Recommended
Home Automation Switch Panels
Smart wall switches, dimmer panels, and occupancy-sensor hubs leverage the PIC16LF1574-I/JQ for capacitive touch decoding, relay control, and wireless hand-off to a hub MCU. The Core Independent Peripherals (CWG, NCO) generate the zero-cross dimming signal while the CPU sleeps, and the 12 I/O pins accommodate multi-button or rotary-knob front panels in the same UQFN-16 package. Operating from 1.8 V to 3.6 V, the part runs directly from a small mains-derived capacitive dropper supply.
Recommended
Industrial Sensor Transmitters
Industrial 4-20 mA loop-powered or 24 V bus sensors use the PIC16LF1574-I/JQ for signal conditioning, linearization, and HART or IO-Link protocol handling. The 10-bit ADC digitizes bridge sensors, RTDs, or thermocouple inputs, and the 32 MHz core runs calibration routines in real time. The -40 °C to +85 °C industrial temperature rating covers most factory-floor environments without derating.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1574-I/JQ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1574-E/JQ | PIC16LF1575-I/JQ | PIC16F1574-I/JQ | PIC16LF15324-I/JQ | PIC16LF1454-I/JQ | PIC16LF15325-I/JQ |
|---|---|---|---|---|---|---|---|
| Package | UQFN-16 (4x4 mm) | UQFN-16 (4x4 mm) - same | UQFN-16 (4x4 mm) - same | UQFN-16 (4x4 mm) - same | UQFN-16 (4x4 mm) - same | UQFN-16 (4x4 mm) - same | UQFN-16 (4x4 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 7 KB | 7 KB | 14 KB | 7 KB | 7 KB | 14 KB | 7 KB |
| Data RAM | 512 B | 512 B | 1 KB | 512 B | 512 B | 1 KB | 512 B |
| Max Clock Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 48 MHz | 32 MHz |
| Supply Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| ADC Resolution | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 11 | 12 |
| USB Support | No | No | No | No | No | Yes (USB 2.0 FS) | No |
| Temperature Range | -40 °C to +85 °C | -40 °C to +125 °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 |
Key Differentiators
- Drop-in UQFN-16 replacement with double the Flash and RAM (vs PIC16LF1575-I/JQ)
- Wider supply voltage range for 5 V systems (vs PIC16F1574-I/JQ)
- Newer-generation core with enhanced Core Independent Peripherals (vs PIC16LF15324-I/JQ)
- Extended temperature range option (vs PIC16LF1574-E/JQ)
Design Notes
The 16-pin UQFN (4x4 mm) package has an exposed thermal pad (EP) on its underside that must be soldered to a sufficiently large PCB copper pour, ideally connected to the ground plane. This improves mechanical reliability under thermal cycling and aids thermal dissipation. For hand-rework, use a hot-air rework station with a controlled profile; do not attempt to desolder with a soldering iron due to the small lead pitch.
Place a 0.1 µF ceramic decoupling capacitor as close as possible to the VDD pin (pin 16) and a bulk capacitor of 1 µF to 10 µF on the same power rail. For sleep-mode applications targeting 30 nA typical Iq, ensure no pull-up resistors on floating I/O pins leak current; configure all unused I/Os as outputs low. The internal 32 MHz oscillator accuracy is ±1% over the full -40 °C to +85 °C range, eliminating the need for an external crystal in most designs.
Do not confuse the 'I' (industrial -40 °C to +85 °C) and 'E' (extended -40 °C to +125 °C) temperature suffixes - both have the same UQFN-16 (JQ) package but differ in temperature range. Verify that the MCLR pin (RA3) is either pulled high through a 10 kΩ resistor or disabled in firmware to avoid unintended resets. When migrating code from PIC16F1574 to PIC16LF1574, double-check that all peripherals operate correctly at the lower 3.6 V maximum, especially ADC reference voltage selection.
Keep ADC analog input traces short and routed away from switching digital signals such as PWM outputs to minimize crosstalk. Place the analog reference capacitor (if used) close to the VREF+ pin. The CWG output pins should be routed with short, matched-length traces to avoid skew in complementary waveform generation. Avoid routing high-current switching traces beneath the UQFN package to reduce induced noise on the ground reference.
Compliance Information
RoHS and lead-free confirmed by distributor listings. Not AEC-Q100 qualified; for automotive use, contact Microchip for automotive-grade (VAO) variants. REACH compliance statement available from Microchip.
