PIC16F1574T-I/JQ - 8-bit MCU, 7KB Flash, 32MHz, 16-UQFN | Microchip
MPN: PIC16F1574T-I/JQ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.28 | $12.80 |
| 100 | $1.1 | $110.00 |
| 500 | $0.95 | $475.00 |
| 1,000 | $0.84 | $840.00 |
PIC16F1574T-I/JQ Overview
A microcontroller (MCU) is a single-chip computer containing a CPU, non-volatile program memory (Flash), working memory (RAM), and on-chip peripherals such as ADCs, timers, communication interfaces, and pulse-width modulators. MCUs are widely used in embedded systems to sense, decide, and actuate in products ranging from LED drivers to household appliances. The PIC16F1574 belongs to the PIC16F family of mid-range 8-bit microcontrollers, sitting within the broader PIC microcontroller -> 8-bit microcontroller -> microcontroller -> embedded processor hierarchy. Its 16-bit PWM capability in an 8-bit core gives it an unusual combination of high-resolution analog and a low-cost instruction set.
Key features of the PIC16F1574T-I/JQ include 7KB Flash, 512B RAM, four 16-bit PWMs for high-resolution LED lighting or motor control, a 10-bit ADC with multiple channels, and an industrial-grade -40C to +85C operating temperature range. The 'I' suffix denotes the industrial temperature grade and 'T' indicates Tape & Reel packaging, while 'JQ' is Microchip's package designator for the 16-pin UQFN (4x4). The 32 MHz internal oscillator combined with the 16-bit PWMs enables fine dimming steps and tight motor speed loops.
The PIC16F1574T-I/JQ's internal architecture uses a Harvard RISC core with a 14-bit instruction word, separate code and data buses, and core-independent peripherals that offload timing-critical functions from the CPU. This makes it well-suited to LED lighting controllers, stepper motor drivers, and other applications where deterministic PWM behavior matters more than raw compute throughput.
Typical applications for the PIC16F1574T-I/JQ include LED lighting control (especially dimmable drivers), small DC-DC and SEPIC power supplies, stepper and brushed DC motor control, fan and pump speed controllers, and general-purpose analog signal conditioning with PWM output. The combination of 16-bit PWM and 10-bit ADC allows closed-loop digital control loops that are difficult to achieve with traditional 8-bit PWMs.
When designing with this part, ensure the UQFN-16 land pattern pads and the exposed thermal pad connection are matched to the chosen PCB footprint; the small 4x4 mm package has limited heat dissipation and benefits from at least a modest thermal copper pour. Programming is supported through Microchip's MPLAB X IDE with PICkit, ICD, or Snap programmers, and the configuration bits control oscillator, watchdog, brown-out reset, and code protection options.
Drop-in alternatives for PIC16F1574T-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 PIC16F1574T-I/JQ (same form factor and footprint) — differing in Package, Timers, ADC, Mounting Type, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1574-I/JQ
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1575-I/JQ
✅ Drop-In✓ In Stock
$0.92 / Unit
View Datasheet →PIC16F1455-I/JQ
✅ Drop-In✓ In Stock
$1.27 / Unit
View Datasheet →PIC16F1574-I/ST
✅ Drop-In✓ In Stock
$0.76 / Unit
View Datasheet →PIC16F1574T-I/JQ Maximum Ratings & Electrical Characteristics
| Manufacturer | Microchip Technology |
| Series | PIC 16F |
| Core | PIC16F (8-bit RISC, 14-bit instruction word) |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| RAM | 512 bytes |
| Maximum CPU Clock | 32 MHz |
| 16-bit PWM Channels | 4 with independent timers |
| ADC | 10-bit |
| Package | 16-pin UQFN (4x4 mm) |
| Package Designator | JQ |
| Mounting Type | Surface Mount (no-lead) |
| Operating Temperature Range | -40C to +85C (industrial, 'I' grade) |
| Programming Interface | ICSP (In-Circuit Serial Programming) via MPLAB X / PICkit |
| Packaging Media | Tape & Reel ('T' suffix) |
| RoHS Status | Compliant |
PIC16F1574T-I/JQ 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 |
| Pin 6 | RA1 — Bidirectional I/O / analog input |
| Pin 7 | RA0 — Bidirectional I/O / analog input / ICSPCLK |
| Pin 8 | VDD — Positive supply voltage |
| Pin 9 | RC5 — Bidirectional I/O / PWM output |
| Pin 10 | RC4 — Bidirectional I/O / PWM output |
| Pin 11 | RC3 — Bidirectional I/O / PWM output |
| Pin 12 | RC2 — Bidirectional I/O / PWM output |
| Pin 13 | RC1 — Bidirectional I/O / ICSPIAT |
| Pin 14 | RC0 — Bidirectional I/O |
| Pin 15 | RB7 — Bidirectional I/O |
| Pin 16 | RB6 — Bidirectional I/O / ICSP programming |
| Pin EP | EP — Exposed thermal pad (must be soldered to ground for thermal performance) |
Typical Applications
PIC16F1574T-I/JQ is suitable for 6 applications: Dimmable LED Lighting Driver, Stepper and Brushed DC Motor Control, Digital DC-DC and SEPIC Power Supply Control, Fan and Pump Speed Controller, General-Purpose Analog Signal Conditioning, IoT Sensor Node with PWM Actuator Output.
Dimmable LED Lighting Driver
The PIC16F1574T-I/JQ's four 16-bit PWM channels with independent timers give it exceptionally fine dimming resolution versus typical 8-bit or 10-bit MCU PWMs - a single 16-bit PWM step is roughly 256x smaller than an 8-bit step. In a dimmable LED driver the MCU generates PWM outputs that drive an external MOSFET or LED driver stage, while the 10-bit ADC samples a sense resistor for closed-loop current regulation. With 32 MHz CPU clock, the part can execute PID dimming loops and DMX-512 or DALI receive stacks in firmware. The compact 4x4 mm UQFN-16 footprint fits into MR16 bulbs, linear LED strips, and architectural downlights where board space is critical. For best results, decouple VDD with 100nF and 10uF capacitors and tie the exposed pad to a clean ground pour.
Recommended
Stepper and Brushed DC Motor Control
The four independent 16-bit PWMs can drive two H-bridges for bipolar stepper control or a four-quadrant brushed DC motor bridge with complementary PWMs and dead-band control. 16-bit resolution translates to sub-RPM precision on the motor shaft and very smooth low-speed torque without the cogging artifacts of 8-bit PWM stepper drives. The 10-bit ADC reads back EMF, current, or position feedback for closed-loop commutation or speed regulation, and the 32 MHz CPU clock supports trapezoidal or even basic field-oriented control algorithms. The 16-UQFN (4x4 mm) package suits compact motor-driver PCBs in appliances, robotics, and 3D printer subsystems. Place input bulk capacitance close to the MCU and route the PWM outputs as short, impedance-matched traces to the gate drivers.
Recommended
Digital DC-DC and SEPIC Power Supply Control
The PIC16F1574T-I/JQ's 16-bit PWMs enable high-resolution duty-cycle control of digital DC-DC converters, including buck, boost, SEPIC, and flyback topologies where fine duty-cycle steps reduce output voltage ripple and improve load transient response. The 10-bit ADC samples output voltage and current for voltage-mode or peak-current-mode control loops, while the CPU executes compensation algorithms at the 32 MHz instruction rate. The MCU's low-power modes also make it suitable for battery-powered supplies where standby efficiency matters. Note that the part does not include analog comparators or dedicated slope compensation, so it is best suited to sub-100 kHz topologies; higher-frequency supplies should move to dsPIC33 or PIC16F153xx parts.
Recommended
Fan and Pump Speed Controller
16-bit PWM resolution and the 10-bit ADC make the PIC16F1574T-I/JQ a natural fit for closed-loop fan or pump speed control, where the MCU generates a variable-duty PWM output that drives the motor or a FET gate, and the ADC reads back RPM from a tachometer or Hall sensor. The wide industrial -40C to +85C temperature range supports HVAC and refrigeration environments. With four PWMs available, one MCU can control a multi-fan tray or a primary-plus-secondary pump pair. The 4x4 mm UQFN footprint fits inline with the fan's control PCB. Add ESD protection on the tachometer input and place the sense resistor close to the ADC pin for accurate readings.
Recommended
General-Purpose Analog Signal Conditioning
Beyond PWM generation, the PIC16F1574T-I/JQ functions as a low-cost 8-bit MCU for general signal conditioning tasks: the 10-bit ADC digitizes analog sensor signals, and the four 16-bit PWMs can output precision analog levels via low-pass filtering. A single PIC16F1574 can replace a dedicated DAC for slow set-point generation, thermistor linearization, or strain-gauge excitation. The 32 MHz CPU clock supports filtering algorithms such as moving average, exponential smoothing, or basic IIR filters in firmware. Industrial temperature grade allows deployment in factory automation and instrumentation sensor front-ends. For higher-precision applications consider PIC16F15376 with 12-bit ADC.
Recommended
IoT Sensor Node with PWM Actuator Output
The PIC16F1574T-I/JQ pairs with a low-power wireless module (such as the MRF24XA or RN2483 LoRa) to form an IoT sensor node that samples one or more analog sensors with the 10-bit ADC and actuates a downstream device through a 16-bit PWM output. The MCU's industrial temperature grade supports outdoor or industrial deployments, and the 4x4 mm UQFN package is small enough to fit inside custom sensor housings. Application examples include remote valve actuators, soil-moisture-controlled irrigation valves, and HVAC damper controllers. Plan the power budget carefully: the MCU itself draws only a few mA active but the wireless module dominates current consumption.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1574T-I/JQ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1574-I/JQ | PIC16F1575-I/JQ | PIC16F1455-I/JQ |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 16-UQFN (4x4) - JQ | 16-UQFN (4x4) - JQ | 16-UQFN (4x4) - JQ | 16-UQFN (4x4) - JQ |
| Core | PIC16F 8-bit, 14-bit instruction | PIC16F 8-bit | PIC16F 8-bit | PIC16F 8-bit |
| Flash | 7 KB | 7 KB | 14 KB | 14 KB |
| RAM | 512 B | 512 B | 1 KB | 1 KB |
| Max CPU Clock | 32 MHz | 32 MHz | 32 MHz | 48 MHz (with USB) |
| 16-bit PWM Channels | 4 with independent timers | 4 with independent timers | 4 with independent timers | PWM peripheral but optimized for USB, fewer 16-bit PWMs |
| ADC | 10-bit | 10-bit | 10-bit | 10-bit |
| USB | No | No | No | Yes (USB 2.0 FS) |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C | -40C to +85C | -40C to +85C |
| Qty-1 Price (USD, as of 2026-09-19) | 1.42 | 1.40 | 1.55 | 2.10 |
Key Differentiators
- Four dedicated 16-bit PWM channels with independent timers (vs PIC16F1455-I/JQ)
- Drop-in identical silicon with Tape & Reel packaging (vs PIC16F1574-I/JQ)
- Compact 16-UQFN 4x4 mm footprint for space-constrained designs (vs PIC16F1574-I/ST (SOIC-14 variant))
Design Notes
Estimated: the 16-UQFN (4x4 mm) package has a center exposed pad (EP) that should be soldered to a ground-copper pour at least the same size as the EP. Without EP soldering, the die's thermal performance degrades and the package can delaminate under thermal cycling. Place a 100nF ceramic decoupling capacitor within 2 mm of the VDD pin and a 10uF bulk capacitor on the same supply rail. Route PWM outputs as short, impedance-matched traces to their gate-driver or FET inputs to avoid ringing.
The PIC16F1574T-I/JQ VDD supply voltage must remain within the datasheet-specified range (typically 2.3V to 5.5V for PIC16F parts) and a decoupling network of 100nF + 10uF is recommended close to VDD and VSS. For battery-powered designs, leverage the PIC16F 'sleep' and 'doze' modes to bring active current down to a few hundred microamps. Brown-out reset (BOR) should always be enabled in configuration bits to prevent code corruption during supply droops.
Do not assume the 'T' suffix (Tape & Reel) is interchangeable with the non-T variant for small prototype quantities: prototype builds often need tube or tray packaging. When migrating from PIC16F1574 to PIC16F1455, double-check that the 16-bit PWM count and ADC channel count still meet application requirements - the PIC16F1455 emphasizes USB at the expense of dedicated 16-bit PWMs. Always verify configuration bit settings (FOSC, WDTE, BOREN, LVP) match your design before programming.
Keep the ICSP programming pins (RA0/ICSPCLK and RC1/ICSPDAT) accessible on the PCB for in-circuit programming during prototyping; route them with short traces to a 5-pin header and avoid loading them with heavy external capacitance. The analog ADC inputs should be isolated from fast-switching PWM traces with a ground guard or short trace length to prevent digital switching noise from coupling into the analog reading.
Compliance Information
RoHS and lead-free compliance confirmed via Microchip product page and distributor listings. AEC-Q100 not applicable - this is a non-automotive industrial-grade part. Halogen-free status not explicitly stated in the verified web data - marked unknown per data authenticity rules.
