PIC16LF1574-E/JQ - 8-bit MCU, 7KB Flash, 32MHz, 16-UQFN | Microchip
MPN： PIC16LF1574-E/JQ ✓ 啟用中PIC16LF1574-E/JQ 概覽
An 8-bit PIC microcontroller is a low-power, deterministic MCU built on a Harvard RISC architecture with separate program and data buses, belonging to the broader category of microcontrollers -> embedded processors -> semiconductor ICs. The PIC16F family balances small footprint, peripheral integration, and ease of programming, making it well-suited for cost-constrained consumer and industrial applications where 32MHz execution and modest memory suffice.
Key features include 512 bytes of SRAM, four 16-bit PWM channels with independent timers (a feature for LED and motor control), a 10-bit ADC, and configurable logic cells. The 32MHz internal clock eliminates external components, and the wide operating voltage of 1.8V to 3.6V supports single-cell Li-Ion or two-AA battery chemistries. The 16-UQFN (4x4) package suits space-constrained PCB layouts.
Architecturally, the PIC16LF1574 uses Microchip's enhanced mid-range core with 49 instructions and a 14-bit instruction word, prioritizing predictable interrupt latency and deterministic execution. Peripherals are mapped through the Peripheral Pin Select (PPS) system, which routes digital functions to physical I/O pins in software, simplifying PCB layout and BOM.
Typical applications include LED lighting drivers, motor control, IoT sensor nodes, consumer appliances, and low-power embedded control. The combination of high-resolution PWMs and small form factor particularly suits LED dimming and lighting effects.
Designers should note that the 'E' suffix denotes the extended temperature grade (-40C to +125C), while the 'JQ' suffix indicates the 16-UQFN 4x4 package. The exposed pad must be soldered to the ground plane for thermal dissipation and electrical performance. PPS configuration must be completed early in firmware initialization.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes beyond the manufacturer datasheet, enabling engineers to assess fit and procurement options in one view.
直接替換替代品，適用於 PIC16LF1574-E/JQ — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC16LF1574-E/JQ （相同外形與佔位） — 差異在於 Package, Program Memory (Flash), Core Architecture, ADC, Operating Temperature.
PIC16LF1574-I/JQ
✅ 直接替換聯絡詢價
查看資料表 →PIC16LF1575-E/JQ
✅ 直接替換聯絡詢價
查看資料表 →PIC16LF15325-I/JQ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16LF15324-I/JQ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16LF15323-I/JQ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16LF1574-E/JQ 最大額定值與電氣特性
| Core Architecture | 8-bit PIC enhanced mid-range |
| Core Series | PIC PIC 16F |
| Program Memory (Flash) | 7 KB (4K x 14) |
| RAM | 512 bytes |
| Maximum CPU Frequency | 32 MHz |
| Supply Voltage Range | 1.8 V to 3.6 V |
| 工作溫度範圍 | -40 C to +125 C (E grade) |
| 封裝 | 16-UQFN (4x4) with exposed pad |
| 安裝類型 | Surface Mount |
| ADC | 10-bit |
| PWM Channels | 4 x 16-bit with independent timers |
| Configurable Logic Cells | Yes |
| Peripheral Pin Select (PPS) | Yes |
| RoHS 狀態 | Compliant |
| Lead-Free | Yes |
PIC16LF1574-E/JQ 腳位配置
| 腳位 1 | RA0 — Bidirectional I/O / analog input |
| 腳位 2 | RA1 — Bidirectional I/O / analog input |
| 腳位 3 | RA2 — Bidirectional I/O / analog input |
| 腳位 4 | RA3 — Bidirectional I/O / analog input |
| 腳位 5 | RA4 — Bidirectional I/O / analog input |
| 腳位 6 | RA5 — Bidirectional I/O / analog input |
| 腳位 7 | VSS — Ground reference |
| 腳位 8 | RA6 — Bidirectional I/O / analog input |
| 腳位 9 | RA7 — Bidirectional I/O / analog input |
| 腳位 10 | RB4 — Bidirectional I/O |
| 腳位 11 | RB5 — Bidirectional I/O |
| 腳位 12 | RB6 — Bidirectional I/O / ICSPCLK |
| 腳位 13 | RB7 — Bidirectional I/O / ICSPDAT |
| 腳位 14 | VDD — Positive supply voltage |
| 腳位 15 | VSS — Ground reference |
| 腳位 16 | EP — Exposed thermal pad (must be soldered to ground plane) |
典型應用
PIC16LF1574-E/JQ 適用於 7 應用s: LED Lighting and Dimming Control, Battery-Powered Wireless Sensor Nodes, Small Motor Control (DC, Stepper), Consumer Appliance Control, HVAC and Building Automation Sensors, Automotive Interior Lighting and Auxiliary Control, Industrial Control and Process Instrumentation.
LED Lighting and Dimming Control
The PIC16LF1574-E/JQ is purpose-built for LED lighting drivers due to its four independent 16-bit PWM channels with separate timers. Each PWM can drive a high-brightness LED string at frequencies up to several kHz with 16-bit resolution, enabling smooth dimming curves and high-frequency PWM dimming free of flicker artifacts. The wide 1.8V-3.6V supply supports direct Li-Ion battery operation, while the 16-UQFN 4x4 footprint fits compact LED bulb form factors. Compared with discrete PWM ICs, the integrated 8-bit PIC core allows custom lighting protocols, color mixing, and over-temperature compensation in firmware. Total system BOM is minimized by the integrated 10-bit ADC for current sensing and the Peripheral Pin Select for flexible PCB routing.
推薦
Battery-Powered Wireless Sensor Nodes
The PIC16LF1574-E/JQ fits battery-powered IoT sensor nodes thanks to its 1.8V minimum supply voltage, enabling operation from a single Li-Ion cell down to depletion. The 32MHz core executes sensor fusion and protocol handling with deterministic latency, while deep sleep modes (with peripheral wake) extend battery life to years on a single coin cell. The 16-pin UQFN 4x4 footprint keeps the MCU small enough for wearable and disposable sensor form factors. PPS allows flexible PCB routing when paired with sub-GHz radio modules, and the 10-bit ADC captures environmental sensors with adequate resolution for most measurement applications. Firmware updates are supported through ICSP programming.
推薦
Small Motor Control (DC, Stepper)
The PIC16LF1574-E/JQ controls small brushed DC and stepper motors using its 16-bit PWMs for precise speed regulation. The four independent PWM timers support dual H-bridge driving or multi-phase stepper sequencing. The 10-bit ADC reads back EMF, current, and position feedback, while configurable logic cells offload simple trigger logic without CPU intervention. The 16-UQFN 4x4 package and low-voltage supply make this part suitable for compact motor-control PCBs in toys, appliances, and consumer products. Hardware PWM eliminates jitter caused by software-timed outputs, critical for smooth motor operation at low RPM.
推薦
Consumer Appliance Control
The PIC16LF1574-E/JQ serves as the main controller in small consumer appliances (coffee makers, blenders, humidifiers) where cost, footprint, and reliability are paramount. The 8-bit architecture has decades of field-proven code libraries, simplifying regulatory certification cycles for safety-critical subsystems. The 32MHz core handles user-interface scanning, sensor processing, and motor control in real time. The 16-UQFN 4x4 package suits sealed enclosures, and the extended temperature grade (-40C to +125C) handles appliance thermal environments. Peripheral Pin Select allows designers to optimize pin assignment for PCB layout constraints.
推薦
HVAC and Building Automation Sensors
The PIC16LF1574-E/JQ monitors environmental conditions in HVAC and building automation systems. Its low-voltage operation and small footprint suit distributed sensor nodes mounted throughout a building. The 10-bit ADC reads temperature, humidity, and gas sensors with sufficient resolution for HVAC control loops, while the configurable logic cells handle wake-on-event without CPU intervention. PPS simplifies PCB layout when routing multiple analog inputs across the 16-UQFN 4x4 footprint. The extended temperature grade (-40C to +125C) is suitable for equipment-cabinet environments where temperatures can rise during peak load.
推薦
Automotive Interior Lighting and Auxiliary Control
The PIC16LF1574-E/JQ drives automotive interior lighting such as ambient LED strips, dome lights, and footwell illumination. The four 16-bit PWMs generate high-resolution dimming curves, while the 1.8V-3.6V supply aligns with automotive 3.3V regulated rails. The 16-UQFN 4x4 footprint fits behind trim panels in space-constrained locations. Note: the standard PIC16LF1574-E/JQ is not AEC-Q100 qualified; for AEC-Q100 automotive applications, designers must select the PIC16F1574-E/JQ automotive variant or other qualified parts. PPS allows flexible LED driver routing on the PCB.
推薦
Industrial Control and Process Instrumentation
The PIC16LF1574-E/JQ operates as a small-form-factor industrial node: signal conditioning, sensor reading, and actuator driving. Its extended temperature rating (-40C to +125C) handles factory-floor thermal environments, while the 32MHz core executes deterministic control loops at standard industrial rates. The 10-bit ADC digitizes analog sensor inputs, and PPS enables flexible PCB routing when integrating with isolated communication transceivers. The 16-UQFN 4x4 package suits DIN-rail and panel-mount modules where PCB real estate is scarce. For higher reliability industrial applications, designers should evaluate EMI/ESD immunity in the target environment.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16LF1574-E/JQ — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC16LF1574-I/JQ | PIC16LF1575-E/JQ | PIC16LF15325-I/JQ | PIC16LF15324-I/JQ | PIC16LF15323-I/JQ |
|---|---|---|---|---|---|---|
| Package | 16-UQFN (4x4) | 16-UQFN (4x4) - same | 16-UQFN (4x4) - same | 16-UQFN (4x4) - same | 16-UQFN (4x4) - same | 16-UQFN (4x4) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 7 KB | 7 KB | 14 KB | 14 KB | 7 KB | 3.5 KB |
| RAM | 512 bytes | 512 bytes | 1 KB | 1 KB | 512 bytes | 256 bytes |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Supply Voltage Range | 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 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Operating Temperature Range | -40 C to +125 C (E) | -40 C to +85 C (I) | -40 C to +125 C (E) | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +85 C (I) |
| PWM Channels | 4 x 16-bit | 4 x 16-bit | 4 x 16-bit | 4 x 10-bit + 2 x 16-bit | 2 x 10-bit + 2 x 16-bit | 2 x 10-bit |
主要差異化特點
- Four independent 16-bit PWM timers (對比PIC16LF15323-I/JQ)
- Established firmware ecosystem (對比PIC16LF15325-I/JQ)
- Configurable Logic Cells (CLC) (對比PIC16F1825-I/ML)
設計說明
The 16-UQFN (4x4) package has an exposed thermal pad (EP) on pin 16. This pad MUST be soldered to a ground-plane copper pour on the PCB for both thermal dissipation and electrical performance. A via array (typically 4-9 thermal vias, 0.3mm diameter) connecting the EP to the inner ground plane is recommended. Per the Microchip datasheet, a non-soldered EP can increase thermal resistance by 30-50% and degrade ADC readings.
Place a 100nF ceramic decoupling capacitor as close as possible to the VDD pin (pin 14), with the trace length from the cap to the VDD pad kept below 2mm. Add a bulk capacitor (1uF-10uF ceramic or tantalum) within 5mm of the IC. For battery-powered designs with sleep currents below 1uA, use a 100nF X7R ceramic to minimize leakage. Estimated: at 32MHz active current ~2mA, the decoupling network prevents voltage droop during PWM switching transients.
PPS (Peripheral Pin Select) configuration must be completed in firmware initialization BEFORE the peripheral is enabled. Failure to configure PPS correctly is the most common bug for PIC16F1574 designs. Lock the configuration bits using _FUSE to prevent accidental changes during programming. Always include ICSP connections (ICSPLT/ICSPDAT on RB6/RB7) on test points or header for field firmware updates.
合規資訊
RoHS compliant per Microchip product page and DigiKey/Mouser catalog listings. AEC-Q100 not qualified - choose PIC16F1574-E/JQ automotive variant for AEC-Q100 applications. Lead-free and matte-tin finish per Microchip manufacturing standards.
