PIC16LF1575T-I/ST - 8-bit MCU 14KB Flash 32MHz 10-bit ADC | Microchip
料号： PIC16LF1575T-I/ST ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.28 | $1.28 |
| 10 | $1.18 | $11.80 |
| 100 | $1.05 | $105.00 |
| 500 | $0.93 | $465.00 |
| 1,000 | $0.85 | $850.00 |
PIC16LF1575T-I/ST 概述
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path and Harvard architecture, integrating a CPU, non-volatile program memory (Flash), volatile data memory (RAM), and a set of on-chip peripherals such as timers, ADCs, PWM, communication ports, and I/O. MCUs are the lowest level of embedded computing in the semiconductor hierarchy: microcontroller -> microprocessor -> integrated circuit -> semiconductor device. The PIC16 family occupies the mainstream low-power tier in the Microchip portfolio, below the PIC18/dsPIC33 high-performance families and above the PIC10/12 baseline families.
Key features of the PIC16LF1575 include a 32MHz maximum CPU clock (8MHz with 4x PLL), 14KB Flash with self-programmability, 1KB RAM, 128 bytes of EEPROM, a 10-bit ADC with Computation (ADC2) for automated averaging and threshold comparison, a 5-bit DAC, Complementary Waveform Generator (CWG), 16-bit PWM, Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART), Peripheral Pin Select (PPS) for flexible I/O mapping, and up to 12 I/O pins. The "LF" prefix denotes the low-voltage (1.8V-3.6V) variant optimized for battery-powered designs.
Architecturally the device uses a RISC-style PIC core with a 14-bit instruction word, hardware stack, and single-cycle hardware multiplier. The ADC2 peripheral offloads averaging, accumulation, and threshold detection from the CPU, allowing autonomous sensor sampling. The CWG combined with 16-bit PWM simplifies half-bridge, full-bridge, and synchronous-rectifier switch-mode control without an external driver.
Typical applications include LED lighting control using the integrated CWG and PWM, battery-powered IoT sensor nodes that leverage the 1.8V-3.6V range and low-power modes, low-cost consumer appliances needing a 10-bit ADC, small motor control and fan drivers using PWM + CWG, and human-machine interface (HMI) panels with EUSART-driven keypads or displays.
When designing with this part, allocate the TSSOP-14 thermal pad correctly and observe the 3.6V absolute-maximum VDD. For ADC2 noise performance, use a clean AVSS/AVDD pair, place a 0.1uF + 1uF decoupling network close to the supply pins, and route analog traces away from switching nodes.
This page synthesizes current distributor pricing, drop-in 14-pin TSSOP alternatives from the same PIC16LF157x family and competitors, and practical design notes that go beyond the manufacturer datasheet.
直接替换替代料： PIC16LF1575T-I/ST ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC16LF1575T-I/ST （相同外形与封装尺寸） ——差异在于 Package, Program Memory (Flash), ADC, Core Architecture, Data RAM.
快速对比工具——选择替代料号进行并排对比：
PIC16LF1574T-I/ST
✅ 直接替换✓ 有现货
$0.6 / 个
查看数据手册 →PIC16LF1554T-I/ST
✅ 直接替换✓ 有现货
$0.95 / 个
查看数据手册 →PIC16LF1575T-I/SL
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$0.88 / 个
查看数据手册 →PIC16LF1575T-I/ST 最大额定值与电气特性
| Core Architecture | PIC16 8-bit RISC |
| Program Memory (Flash) | 14 KB |
| Data RAM | 1 KB |
| Data EEPROM | 128 bytes |
| CPU Clock Speed (max) | 32 MHz |
| Instruction Word Width | 14-bit |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| ADC | 10-bit, with Computation (ADC2) |
| DAC | 5-bit |
| PWM | 16-bit, 1 channel |
| Complementary Waveform Generator | Yes (CWG) |
| EUSART | 1 |
| Peripheral Pin Select (PPS) | Yes |
| I/O Pins (max) | 12 |
| 封装 | 14-pin TSSOP (ST) |
| 工作温度 | -40C to +85C (Industrial) |
| 安装类型 | Surface Mount |
| RoHS | Compliant |
PIC16LF1575T-I/ST 引脚配置
| 引脚 1 | VDD — Positive supply voltage (1.8V to 3.6V) |
| 引脚 2 | RA5 — Digital I/O / analog input |
| 引脚 3 | RA4 — Digital I/O / analog input |
| 引脚 4 | RA3/MCLR — Digital I/O / Master Clear (reset) input |
| 引脚 5 | RC5 — Digital I/O / analog input |
| 引脚 6 | RC4 — Digital I/O / analog input |
| 引脚 7 | RC3 — Digital I/O / analog input |
| 引脚 8 | RC2 — Digital I/O / analog input |
| 引脚 9 | RC1 — Digital I/O / analog input |
| 引脚 10 | RC0 — Digital I/O / analog input |
| 引脚 11 | RA2 — Digital I/O / analog input / DAC output |
| 引脚 12 | RA1 — Digital I/O / analog input |
| 引脚 13 | RA0 — Digital I/O / analog input |
| 引脚 14 | VSS — Ground reference |
典型应用
PIC16LF1575T-I/ST 适用于 6 应用s: LED Lighting Control with CWG, Battery-Powered IoT Sensor Node, Small Motor and Fan Driver, Low-Cost Consumer Appliance Control, Human-Machine Interface (HMI) Keypad or Display, Portable Medical or Wellness Device.
LED Lighting Control with CWG
The PIC16LF1575T-I/ST is well-suited for LED drivers and decorative lighting controllers because it integrates a Complementary Waveform Generator (CWG) and a 16-bit PWM in the same 14-pin TSSOP package. The CWG produces complementary outputs with programmable dead-band delay, which directly drives half-bridge LED FETs without an external gate driver, while the 16-bit PWM provides fine-grained dimming resolution. Operating from 1.8V to 3.6V, the device accepts a single Li-ion or 2xAA battery, eliminating the need for a boost converter. The 32MHz CPU runs the lighting state machine and supports DMX or DALI over the EUSART.
推荐
Battery-Powered IoT Sensor Node
The 1.8V to 3.6V operating range and low-power Sleep modes make the PIC16LF1575T-I/ST a strong fit for wireless sensor nodes that scavenge energy from coin cells or thin-film batteries. The 10-bit ADC2 with Computation peripheral offloads averaging and threshold detection, allowing the CPU to remain in Sleep until a meaningful event occurs - critical for multi-year battery life. The 14KB Flash stores the sensor stack plus a small RF driver; PPS lets the designer remap UART, PWM, or ADC inputs to any I/O pin, simplifying PCB routing around antenna keep-out zones.
推荐
Small Motor and Fan Driver
The combination of a 16-bit PWM and the CWG peripheral enables closed-loop brushless DC fan control or brushed DC motor speed regulation directly from the PIC16LF1575T-I/ST. The CWG handles the complementary switching and dead-band insertion needed for H-bridge FETs, while the 16-bit PWM provides 32kHz+ switching frequencies for silent operation. Back-EMF feedback uses the 10-bit ADC with Computation to perform oversampling and zero-crossing detection without CPU overhead. The 14-pin TSSOP footprint fits inside the fan housing.
推荐
Low-Cost Consumer Appliance Control
White goods and small kitchen appliances benefit from the PIC16LF1575T-I/ST's balance of 14KB Flash for state-machine firmware, a 10-bit ADC for sensing temperature or humidity, and an EUSART for diagnostic or user-interface communication. PPS allows the PCB designer to remap pins for optimal layout, and the 1.8V to 3.6V supply supports direct connection to a rectified 3.3V rail. The integrated 5-bit DAC can be used as a simple bias reference or for setpoint signaling. Industrial-grade -40C to +85C temperature rating ensures reliable operation near heating elements.
推荐
Human-Machine Interface (HMI) Keypad or Display
The PIC16LF1575T-I/ST drives small graphical or segment LCDs, capacitive touch keypads, and rotary encoder inputs in HMI sub-systems. With 12 available I/O pins (PPS-reassignable), designers can dedicate pins to SPI display data, I2C capacitive touch controllers, and interrupt-driven encoder inputs without a larger package. The 32MHz CPU executes multi-tasking UI code at 8 MIPS, which is sufficient for menu rendering and debounce. The 10-bit ADC supports analog joystick or potentiometer inputs as a redundant user-control channel.
推荐
Portable Medical or Wellness Device
The PIC16LF1575T-I/ST fits portable medical peripherals such as pulse-oximeter front-ends, digital thermometer base units, and electronic pill dispensers. The 10-bit ADC2 with Computation executes baseline-correction and signal-averaging routines autonomously, offloading the CPU to manage Bluetooth Low Energy link via an external module over EUSART. The 1.8V to 3.6V supply matches a single Li-ion or 2xAAA battery, and the -40C to +85C industrial rating covers home and clinical environments. Per the Microchip datasheet, PPS lets the designer place analog inputs near the sensor pads.
推荐
推荐产品汇总
工程参考数据： PIC16LF1575T-I/ST ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC16LF1574T-I/ST | PIC16LF1554T-I/ST | PIC16LF1575T-I/SL |
|---|---|---|---|---|
| Package | TSSOP-14 (ST) | TSSOP-14 - same | TSSOP-14 - same | SOIC-14 - different footprint (not pin-compatible drop-in) |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Flash Memory | 14 KB | 7 KB (-50%) | 7 KB (-50%) | 14 KB - same |
| RAM | 1 KB | 512 B (-50%) | 512 B (-50%) | 1 KB - same |
| Max CPU Clock | 32 MHz | 32 MHz - same | 32 MHz - same | 32 MHz - same |
| ADC | 10-bit ADC2 | 10-bit ADC2 - same | 10-bit ADC - different (no Computation) | 10-bit ADC2 - same |
| CWG (Complementary Waveform Generator) | Yes | Yes - same | No | Yes - same |
| I/O Pins (max) | 12 | 6-8 (lower-pin variant) | 12 - same | 12 - same |
| Supply Voltage | 1.8V to 3.6V | 1.8V to 3.6V - same | 1.8V to 3.6V - same | 1.8V to 3.6V - same |
关键差异点
- Highest Flash density in PIC16LF157x TSSOP-14 family （对比 PIC16LF1574T-I/ST)
- Integrated Complementary Waveform Generator (CWG) simplifies switch-mode control （对比 PIC16LF1554T-I/ST)
- TSSOP-14 footprint saves board area versus SOIC-14 （对比 PIC16LF1575T-I/SL)
设计说明
Place a 0.1uF ceramic decoupling capacitor within 3mm of the VDD pin and a 1uF bulk capacitor on the same net to suppress switching transients when the CPU transitions from Sleep to active. For ADC2 noise performance, dedicate a separate 10uH ferrite bead on AVDD if available, or star-route VDD to the MCU from the regulator output. The 1.8V-3.6V supply range allows direct connection to a single-cell Li-ion or 2xAA battery without a boost converter, simplifying the BOM.
Do not exceed the absolute maximum VDD of 4.0V - the on-chip Flash and ADC2 modules degrade permanently above this threshold. When programming via ICSP, ensure the MCLR pull-up is strong enough (typically 10k) to prevent spurious resets during in-circuit programming. PPS reassignments are non-volatile only after the PPSLOCK unlock sequence; failing to follow the unlock sequence silently ignores the pin-remap write and is a frequent source of debug frustration.
Route analog ADC inputs away from switching nodes such as the CWG outputs and PWM pins to avoid coupled noise. Use a ground guard ring around sensitive analog traces and tie the analog ground (AVSS) to the digital ground (VSS) at a single point near the MCU. For the EUSART, add a 100 ohm source termination if the trace exceeds 50mm or if baud rates go above 115.2 kbps.
Estimated: at VDD=3.3V and full 32MHz active mode, the device dissipates approximately 8mA * 3.3V = 26.4 mW - well within the TSSOP-14 thermal envelope and no heatsink is required. In Sleep mode the current drops below 1uA per the Microchip datasheet, allowing battery-powered designs to operate for years on a coin cell. Verify the actual IDD figure against the latest datasheet revision because it varies with peripheral enable state.
合规信息
RoHS and REACH compliance per Microchip product page. Not AEC-Q100 qualified - choose automotive-grade PIC16F equivalent for AEC-Q100 designs. Halogen-free per Microchip environmental certifications.
