PIC16F1574T-I/ST - 8-bit MCU, 7KB Flash, 16-bit PWM, 14-TSSOP | Microchip
部品番号: PIC16F1574T-I/ST ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $1.62 | $1.62 |
| 10 | $1.43 | $14.30 |
| 100 | $1.18 | $118.00 |
| 500 | $1.02 | $510.00 |
| 1,000 | $0.93 | $930.00 |
| 2,500 | $0.86 | $2,150.00 |
PIC16F1574T-I/ST 概要
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (RAM), and a range of peripherals such as timers, ADC modules, communication interfaces, and PWM channels. The PIC16F1574 belongs to the 8-bit PIC16 enhanced mid-range family and sits within the broader hierarchy: microcontroller -> embedded processor -> semiconductor IC. By integrating high-resolution 16-bit PWMs alongside a 10-bit ADC, the device targets mixed-signal applications where both precise timing and analog measurement are required.
Key features include four 16-bit PWM channels with independent time bases for high-resolution control, a 10-bit Analog-to-Digital Converter (ADC) for sensor interfacing, an internal oscillator, and multiple communication peripherals. The integrated Core Independent Peripherals (CIPs) offload tasks from the CPU, allowing deterministic timing for LED dimming, fan control, and power-conversion feedback loops. The TSSOP-14 package delivers a small PCB footprint of approximately 5.0 mm x 4.4 mm.
The PIC16F1574 uses Microchip's enhanced mid-range 8-bit core, executes most instructions in a single clock cycle, and supports up to 32 MHz internal oscillator operation. Program memory is Flash-based, enabling in-circuit serial programming (ICSP) for field updates and rapid prototyping.
Typical applications include LED lighting drivers (constant-current dimming), DC-DC converter digital control, fan and pump speed control, sensor signal conditioning, and general-purpose IoT edge nodes. In LED lighting, the four 16-bit PWMs enable smooth dimming curves; in motor control, they provide precise duty-cycle adjustment for low-RPM torque control.
When designing with this device, ensure input voltage stays within 1.8 V-5.5 V and respect absolute maximum ratings. The TSSOP-14 package requires standard SMD reflow; solder-pad design should follow JEDEC J-STD-020 MSL classification. Programming requires a Microchip PICkit, Snap, or ICD programmer.
This page synthesizes distributor pricing from LCSC and Mouser, drop-in alternatives within the PIC16F157x family, and practical design notes for 16-bit PWM applications not found in the manufacturer datasheet alone.
ドロップイン代替品: PIC16F1574T-I/ST — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: PIC16F1574T-I/ST （同一形状・フットプリント） — 相違点: Package, Core Architecture, ADC, Program Memory (Flash), Operating Temperature.
クイック比較ツール — 並列比較する代替部品を選択:
PIC16F1574-I/ST
✅ ドロップイン✓ 在庫あり
$0.76 / 個
データシートを見る →PIC16F1574-E/ST
✅ ドロップイン✓ 在庫あり
$0.98 / 個
データシートを見る →PIC16LF1574-I/ST
✅ ドロップイン✓ 在庫あり
$0.85 / 個
データシートを見る →PIC16F15225T-I/ST
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$0.62 / 個
データシートを見る →PIC16F15224-I/ST
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$0.72 / 個
データシートを見る →PIC16F1455T-I/ST
✅ ドロップイン✓ 在庫あり
$1.92 / 個
データシートを見る →PIC16F1574T-I/ST 最大定格＆電気的特性
| Program Memory (Flash) | 7 KB |
| Data Memory (RAM) | 512 B |
| CPU | 8-bit PIC16 enhanced mid-range |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage Range | 1.8 V to 5.5 V |
| PWM Channels | 4 x 16-bit |
| ADC | 10-bit |
| パッケージ | 14-pin TSSOP (ST) |
| 実装タイプ | Surface Mount |
| 動作温度範囲 | -40C to +85C (Industrial) |
| RoHS ステータス | Compliant |
| Lead-Free | Yes |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
PIC16F1574T-I/ST ピン構成
| ピン 1 | RA3/AN3/VPP — Digital I/O / Analog input / Programming voltage |
| ピン 2 | RA4/AN4 — Digital I/O / Analog input |
| ピン 3 | RA5/AN5 — Digital I/O / Analog input |
| ピン 4 | VDD — Positive supply voltage |
| ピン 5 | VSS — Ground |
| ピン 6 | RC0 — Digital I/O |
| ピン 7 | RC1 — Digital I/O |
| ピン 8 | RC2 — Digital I/O |
| ピン 9 | RC3 — Digital I/O |
| ピン 10 | RC4 — Digital I/O |
| ピン 11 | RC5 — Digital I/O |
| ピン 12 | RA0/AN0 — Digital I/O / Analog input |
| ピン 13 | RA1/AN1 — Digital I/O / Analog input |
| ピン 14 | RA2/AN2 — Digital I/O / Analog input |
主な用途
PIC16F1574T-I/ST の用途: 7 件s: LED Lighting Dimming Control, DC-DC Converter Digital Control, Fan and Pump Speed Control, Battery-Powered IoT Sensor Nodes, Automotive Interior Lighting, Capacitive Touch User Interface, Industrial Sensor Signal Conditioning.
LED Lighting Dimming Control
The PIC16F1574T-I/ST's four 16-bit PWM channels with independent time bases make it a strong fit for LED lighting dimming, where smooth dimming curves and high resolution directly affect perceived light quality. With 16-bit resolution at typical 60 Hz PWM, the device can deliver approximately 65,000 dimming steps for smooth logarithmic dimming curves matching human eye sensitivity. The 10-bit ADC measures ambient light or LED current for closed-loop constant-current control, while the wide 1.8 V-5.5 V input range supports both 3.3 V and 5 V LED driver topologies. The TSSOP-14 package fits into compact bulb-form-factor PCBs and the 8-bit core executes dimming math in a single clock cycle. Core Independent Peripherals reduce CPU load for synchronized multi-channel color-mixing in RGBW fixtures.
おすすめ
DC-DC Converter Digital Control
The PIC16F1574T-I/ST delivers digital control for non-isolated DC-DC converters by combining four 16-bit PWMs with the 10-bit ADC for output voltage and current feedback. The high-resolution PWMs enable accurate duty-cycle adjustment for synchronous buck, boost, and SEPIC converters at switching frequencies from 100 kHz to 1 MHz. The ADC samples feedback at the right phase of the switching cycle for digital peak-current-mode control. Industrial 24 V bus systems can supply the MCU directly through a 5 V LDO. The 32 MHz internal oscillator provides deterministic control-loop timing and the integrated Flash memory stores calibration coefficients and compensation tables. Compared to pure analog controllers, the digital approach enables adaptive control, soft-start profiles, and field-updatable firmware.
おすすめ
Fan and Pump Speed Control
The PIC16F1574T-I/ST is well suited to fan and pump speed control, where the four 16-bit PWMs drive power-stage FETs at low-RPM torque-optimized duty cycles. The 10-bit ADC reads tachometer pulses or Hall-sensor feedback for closed-loop RPM regulation, while the wide operating voltage supports 5 V and 12 V system rails typical in brushless-DC fans and small liquid pumps. The 32 MHz core bandwidth handles PI control loops at sub-millisecond update rates for stable regulation. Core Independent Peripherals sample the tachometer without CPU intervention, leaving the core free for telemetry processing. The TSSOP-14 package fits compact fan-hub PCBs and the -40C to +85C industrial range handles under-hood and outdoor enclosures.
おすすめ
Battery-Powered IoT Sensor Nodes
The PIC16F1574T-I/ST fits battery-powered IoT edge nodes because of its wide 1.8 V-5.5 V operating range that works directly with single-cell Li-ion and dual-AA chemistries. The 16-bit PWMs drive sensor excitation, while the 10-bit ADC reads temperature, light, or analog sensor outputs. Sleep-mode current in the nanoampere range extends coin-cell battery life to multiple years in duty-cycled applications. The ICSP interface supports field firmware updates over the same programming pins used in production. The 14-pin TSSOP package occupies minimal PCB area in coin-cell CR2032 form factors. Pair with an external SPI or UART radio module for complete wireless sensor node designs.
おすすめ
Automotive Interior Lighting
The PIC16F1574T-I/ST is well matched to automotive interior RGB ambient lighting because the four 16-bit PWMs can drive red, green, blue, and white LED channels with smooth logarithmic dimming for cinema-quality color fades. The 10-bit ADC supports automotive 12 V battery rails through external voltage dividers and reads cabin-ambient light sensors for automatic brightness adaptation. The industrial -40C to +85C temperature range handles cabin thermal environments under direct sunlight. Core Independent Peripherals synchronize PWM updates across all four channels for flicker-free color transitions. The TSSOP-14 footprint fits tight instrument-cluster and door-trim PCB layouts where space is constrained.
おすすめ
Capacitive Touch User Interface
The PIC16F1574T-I/ST supports Capacitive Touch sensing through Microchip's mTouch framework using the integrated 10-bit ADC and Core Independent Peripherals. The device scans up to several touch buttons and sliders through charge-time measurement on dedicated GPIO pins without external touch ICs. The 32 MHz core processes debounce, gesture recognition, and proximity algorithms in firmware, while the 16-bit PWMs drive LED backlighting that responds to touch events. The TSSOP-14 package fits behind glass or acrylic panels in kitchen appliances, consumer electronics, and industrial control panels. The 7 KB Flash accommodates mTouch library and application code for finished products.
おすすめ
Industrial Sensor Signal Conditioning
The PIC16F1574T-I/ST conditions and linearizes analog sensor outputs from thermocouples, RTDs, strain gauges, and bridge pressure sensors. The 10-bit ADC digitizes sensor signals while the 16-bit PWMs drive excitation currents, reference voltages, or H-bridge drivers for active transducers. The 32 MHz core runs polynomial linearization, digital filtering, and unit-conversion math in real time without taxing the CPU budget. The 1.8 V-5.5 V range supports 3.3 V industrial sensor rails and battery-powered field transmitters. The TSSOP-14 package enables compact DIN-rail sensor modules and the -40C to +85C industrial range handles factory-floor thermal environments. The on-chip Flash stores calibration coefficients for each individual sensor.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: PIC16F1574T-I/ST — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | PIC16F1574-I/ST | PIC16F1574-E/ST | PIC16LF1574-I/ST | PIC16F15225T-I/ST | PIC16F15224-I/ST | PIC16F1455T-I/ST |
|---|---|---|---|---|---|---|---|
| Package | 14-pin TSSOP (ST) | 14-pin TSSOP (ST) - same | 14-pin TSSOP (ST) - same | 14-pin TSSOP (ST) - same | 14-pin TSSOP (ST) - same | 14-pin TSSOP (ST) - same | 14-pin TSSOP (ST) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| RAM | 512 B | 512 B | 512 B | 512 B | 1024 B | ||
| ADC Resolution | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | ||
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 5.5 V (with USB regulator) | ||
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +125C (Extended) | -40C to +85C | -40C to +85C | ||
| Packaging Format | Tape & Reel | Tube | Tube | Tube | Tape & Reel |
主な差別化要因
- Four independent 16-bit PWM channels in TSSOP-14 （vs PIC16F1455T-I/ST)
- Industrial -40C to +85C temperature range by default （vs PIC16F1574-E/ST)
- Wide 1.8 V to 5.5 V supply range including 5 V （vs PIC16LF1574-I/ST)
設計ノート
Decouple VDD with a 100 nF ceramic capacitor placed within 3 mm of the VDD pin and a bulk 10 uF tantalum or ceramic capacitor on the same rail. The PIC16F1574T-I/ST is sensitive to supply droop during ADC conversions; insufficient decoupling causes ADC noise to correlate with PWM edges. For battery-powered designs, place a ferrite bead between the battery and VDD to suppress conducted noise from PWM-driven loads.
Configure the four 16-bit PWM channels with phase-shift between PWM outputs if driving a multi-channel LED array to reduce input-capacitor ripple current. Start with PWM frequency around 1 kHz for LED dimming to avoid audible flicker; 100 kHz to 1 MHz for DC-DC control. Use Microchip's MCC (MPLAB Code Configurator) PWM peripheral library to auto-compute period and duty-cycle register values without manual calculation.
TSSOP-14 thermal pad design requires JEDEC J-STD-020 compliant reflow profile with peak temperature around 245-260 C for lead-free SAC305 solder. Use a PCB land pattern with 0.65 mm pitch and ensure solder mask sliver clearance between pads. For high-vibration automotive or industrial environments, add under-fill or corner staking to prevent TSSOP lead fatigue from thermal cycling.
Estimated: At 32 MHz system clock and 5.5 V VDD, core current consumption reaches roughly 7 mA during active ADC+PWM operation. For sleep-mode designs, verify that all peripherals are disabled before executing the SLEEP instruction - leaving the ADC enabled adds approximately 200 uA that defeats low-power design intent. The ICSPDAT/ICSPCLK pins require isolation resistors when shared with application circuitry to prevent programming-mode interference.
PWM output rise/fall times of approximately 10 ns at 5 V VDD can couple into adjacent analog input traces on the TSSOP-14 package. Keep analog ADC inputs (RA0-RA5) at least 3 mm away from PWM-driven traces, or guard them with ground traces. For high-accuracy ADC measurements, average 16 or more samples in firmware to reduce PWM-synchronous noise pick up.
コンプライアンス情報
RoHS compliant per Microchip product page. Industrial temperature grade -40C to +85C. AEC-Q100 not qualified - use PIC16F1574-E/ST for extended temperature but not AEC-Q100 automotive qualification.