PIC16LF1574T-I/ST - 8-bit MCU, 7KB Flash, 32MHz | Microchip
料号： PIC16LF1574T-I/ST ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.17 | $1.17 |
| 10 | $1.05 | $10.50 |
| 100 | $0.91 | $91.00 |
| 500 | $0.78 | $390.00 |
| 1,000 | $0.69 | $690.00 |
| 2,500 | $0.6 | $1,500.00 |
PIC16LF1574T-I/ST 概述
What is an 8-bit PIC microcontroller? A PIC (Peripheral Interface Controller) microcontroller is a compact, low-power CMOS IC that integrates a CPU, program memory (Flash/ROM), data memory (RAM), and configurable peripherals on a single die. PIC MCUs belong to the broader class of microcontrollers -> embedded processors -> digital ICs -> semiconductors, and are widely used for deterministic control tasks. The PIC16 series emphasizes low pin count, ultra-low power, and rich analog/motor-control peripherals.
Key features include a 10-bit ADC with multiple channels, a 5-bit DAC, enhanced Universal Synchronous/Asynchronous Receiver Transmitter (EUSART), Peripheral Pin Select (PPS) for flexible signal routing, a Complementary Waveform Generator (CWG), and a 16-bit PWM with multiple duty-cycle modes. The device also includes an enhanced comparator, configurable logic cell (CLC) blocks, and the nanoWatt XLP technology for ultra-low-power sleep operation.
The PIC16LF1574T-I/ST uses a Harvard architecture with separate code and data buses, an internal 32MHz oscillator, and the standard 14-bit instruction set used by mid-range PIC16 devices. This architecture delivers predictable interrupt latency (instruction-cycle deterministic) and efficient C compilation via MPLAB XC8, while PPS enables remapping of digital peripherals to almost any I/O pin.
Typical applications include LED lighting control, battery-powered IoT sensor nodes, small appliance motor control (BLDC/PMSM drivers), consumer electronics user interfaces, and low-cost wireless sensor platforms. The 5-bit DAC and CWG combination is well-suited for tunable white-LED and RGB color-mixing designs, while the 10-bit ADC handles thermistor, photocell, and current-sense feedback.
When designing with this device, ensure VDD decoupling uses a 100nF ceramic capacitor placed within 5mm of the VDD pin, and consider using the nanoWatt XLP sleep modes (typical <1uA) for battery-life targets exceeding one year. PPS must be configured in firmware before peripheral use, since peripherals default to disabled.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design guidance that complements the manufacturer datasheet without duplicating it.
直接替换替代料： PIC16LF1574T-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： PIC16LF1574T-I/ST （相同外形与封装尺寸） ——差异在于 Package, Program Memory (Flash), Core Architecture, ADC, Data RAM.
快速对比工具——选择替代料号进行并排对比：
PIC16LF1574-I/ST
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$0.85 / 个
查看数据手册 →PIC16LF1574-E/ST
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC16F1574T-I/ST
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$0.86 / 个
查看数据手册 →PIC16LF1554T-I/ST
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$0.95 / 个
查看数据手册 →PIC16LF1554-I/ST
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$0.85 / 个
查看数据手册 →PIC16LF1454T-I/ST
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.1 / 个
查看数据手册 →PIC16LF1574T-I/ST 最大额定值与电气特性
| Core Architecture | 8-bit PIC (Enhanced Mid-Range) |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data RAM | 512 B |
| CPU Speed (max) | 32 MHz |
| Instruction Set Width | 14-bit |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| ADC | 10-bit, multi-channel |
| DAC | 5-bit |
| PWM Channels | 16-bit PWM |
| Comparators | Yes (enhanced) |
| EUSART | Yes (1x) |
| Peripheral Pin Select (PPS) | Yes |
| Complementary Waveform Generator (CWG) | Yes |
| 封装 | 14-pin TSSOP (ST) |
| 工作温度 | -40C to +85C (Industrial) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
PIC16LF1574T-I/ST 引脚配置
| 引脚 1 | VDD — Positive supply voltage (1.8V-3.6V) |
| 引脚 2 | RA5 — Bidirectional I/O / analog input / PPS-mappable peripheral |
| 引脚 3 | RA4 — Bidirectional I/O / analog input |
| 引脚 4 | RA3/MCLR/VPP — Input only / Master Clear reset / programming voltage |
| 引脚 5 | RC5 — Bidirectional I/O / analog input / PPS-mappable |
| 引脚 6 | RC4 — Bidirectional I/O / analog input / PPS-mappable |
| 引脚 7 | RC3 — Bidirectional I/O / analog input / EUSART PPS-mappable |
| 引脚 8 | RC2 — Bidirectional I/O / analog input |
| 引脚 9 | RC1 — Bidirectional I/O / analog input / EUSART PPS-mappable |
| 引脚 10 | RC0 — Bidirectional I/O / analog input |
| 引脚 11 | RA2 — Bidirectional I/O / analog input / DAC output |
| 引脚 12 | RA1 — Bidirectional I/O / analog input / DAC reference |
| 引脚 13 | RA0 — Bidirectional I/O / analog input |
| 引脚 14 | VSS — Ground reference (0V) |
典型应用
PIC16LF1574T-I/ST 适用于 7 应用s: LED Lighting Control (Tunable White / RGB), Battery-Powered IoT Sensor Node, Small Appliance BLDC / PMSM Motor Control, Consumer Electronics User Interface, Automotive Interior Lighting / Body Electronics, Industrial Sensor Conditioning & Process Monitoring, Portable Medical Monitoring Devices.
LED Lighting Control (Tunable White / RGB)
The PIC16LF1574T-I/ST is well suited for LED lighting drivers because it combines a 5-bit DAC for color-mixing reference, a Complementary Waveform Generator (CWG) for dead-band-controlled half-bridge drive, and the nanoWalt XLP sleep modes that keep standby current below 1 uA. Its 1.8V-3.6V supply matches single-cell Li-ion or 2x AA alkaline packs common in retrofit bulbs. The CLC blocks can implement fade logic in hardware without CPU wake-ups, easing real-time load on the MCU.
推荐
Battery-Powered IoT Sensor Node
For IoT sensor nodes the PIC16LF1574T-I/ST's 1.8V-3.6V range, 7KB Flash for protocol stacks, and nanoWatt XLP sleep currents below 1 uA extend battery life beyond one year on a single CR2032. The 10-bit ADC reads thermistor, photocell, or current-sense signals directly, while the EUSART links to sub-GHz transceivers like the MRF89XA. PPS lets the designer remap EUSART and ADC pins to avoid PCB re-spins when adding sensors.
推荐
Small Appliance BLDC / PMSM Motor Control
The PIC16LF1574T-I/ST drives small BLDC and PMSM motors using its Complementary Waveform Generator (CWG), 16-bit PWM, and enhanced comparator for back-EMF zero-cross detection. The 5-bit DAC sets a programmable reference for current-sense comparators, while 32MHz CPU headroom runs sensorless startup algorithms. The TSSOP-14 footprint suits space-constrained appliance PC boards like fan controllers or small pump drivers.
推荐
Consumer Electronics User Interface
The PIC16LF1574T-I/ST handles capacitive touch, rotary encoder inputs, and LED feedback in user-interface modules through its CLC blocks, 10-bit ADC for slider/potentiometer read, and PWM for LED brightness control. The 1.8V operation suits direct connection to coin-cell or 2x AAA supplies. PPS enables reassignment of interrupt-on-change pins without PCB changes, accelerating mechanical redesigns.
推荐
Automotive Interior Lighting / Body Electronics
The PIC16LF1574T-I/ST can be used for non-safety automotive interior functions like ambient lighting, HVAC flap control, or seat-position memory switches where AEC-Q100 qualification is not mandatory. Its 1.8V-3.6V supply matches modern body-control modules, and the CLC/CWG features simplify RGB strip and stepper-motor actuation. For AEC-Q100-required functions, choose the PIC16F1574-E/ST extended-temperature variant.
推荐
Industrial Sensor Conditioning & Process Monitoring
The PIC16LF1574T-I/ST handles 4-20mA loop-powered sensor conditioning, RTD/thermistor linearization, and Modbus RTU slave communications in industrial monitoring applications. The 10-bit ADC reads bridge, thermocouple, or 4-20mA shunt signals directly, while the EUSART interfaces to RS-485 transceivers. The TSSOP-14 footprint and 1.8V operation suit DIN-rail mount modules with isolated DC-DC supplies.
推荐
Portable Medical Monitoring Devices
The PIC16LF1574T-I/ST powers portable medical peripherals like pulse oximeters, glucose-meter interfaces, and wearable thermometers where low power, small package, and reliable ADC performance are critical. Its 1.8V-3.6V range runs from single-cell Li-ion or 2x coin cells, while the 10-bit ADC digitizes photodiode or thermistor signals at low duty cycles. PPS enables flexible PCB routing in tight wearable enclosures.
推荐
推荐产品汇总
工程参考数据： PIC16LF1574T-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 | PIC16LF1574-I/ST | PIC16LF1574-E/ST | PIC16F1574T-I/ST | PIC16LF1554T-I/ST | PIC16LF1454T-I/ST |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TSSOP-14 | TSSOP-14 - same | TSSOP-14 - same | TSSOP-14 - same | TSSOP-14 - same | TSSOP-14 - same |
| Flash Memory | 7 KB (4K x 14) | 7 KB - same | 7 KB - same | 7 KB - same | 4 KB (-43%) | 4 KB (-43%) |
| RAM | 512 B | 512 B - same | 512 B - same | 512 B - same | 256 B (-50%) | 512 B - same |
| CPU Frequency (max) | 32 MHz | 32 MHz - same | 32 MHz - same | 32 MHz - same | 32 MHz - same | 32 MHz - same |
| Supply Voltage | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| ADC | 10-bit | 10-bit - same | 10-bit - same | 10-bit - same | 10-bit - same | 10-bit - same |
| DAC | 5-bit | 5-bit - same | 5-bit - same | 5-bit - same | Not present | Not present |
| PWM | 16-bit | 16-bit - same | 16-bit - same | 16-bit - same | 10-bit (lower res) | 10-bit (lower res) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +125C (extended) | -40C to +85C | -40C to +85C | -40C to +85C |
关键差异点
- Includes 5-bit DAC and CWG peripherals absent in PIC16LF1554 （对比 PIC16LF1554T-I/ST)
- Lower VDD range than PIC16F1574 enables single-cell Li-ion designs （对比 PIC16F1574T-I/ST)
- Extended temperature variant available in same TSSOP-14 package （对比 PIC16LF1574-E/ST)
设计说明
Place a 100 nF decoupling capacitor within 5 mm of the VDD pin and a 10 uF bulk capacitor near the board's supply entry point. For battery-powered designs, use the nanoWatt XLP sleep modes (typical <1 uA standby) and configure PPS in firmware before enabling peripherals. The 1.8V-3.6V range supports direct connection to a single Li-ion cell or 2x AA alkalines without boost regulators.
The TSSOP-14 footprint requires careful thermal relief on the VDD/VSS pads to avoid cold-solder joints during reflow. Estimated: at 32 MHz and 3.3V, the device draws ~6 mA active, producing negligible junction heating - no thermal copper pour is required. Keep analog input traces short and routed away from PWM outputs to minimize ADC noise coupling.
PPS must be configured in firmware before peripheral use - peripherals default to disabled. The MCLR/RA3 pin (pin 4) requires a 10 kohm pull-up to VDD for normal operation; leaving it floating causes unintended resets. The 5-bit DAC output requires enabling the DACCON register before applying the reference voltage. Verify voltage ratings before interfacing to 5V sensors.
合规信息
RoHS and REACH compliant per Microchip product page. AEC-Q100 not qualified - for automotive-grade functionality, choose the PIC16LF1574-E/ST extended temperature variant (non-AEC-Q100) or upgrade to AEC-Q100 qualified PIC16F1574 family members.
