PIC16LF1703-E/ST - 8-bit MCU, 3.5KB Flash, 32MHz, 14-TSSOP | Microchip
料号： PIC16LF1703-E/ST ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.99 | $0.99 |
| 10 | $0.89 | $8.90 |
| 100 | $0.78 | $78.00 |
| 500 | $0.68 | $340.00 |
| 1,000 | $0.59 | $590.00 |
| 2,500 | $0.52 | $1,300.00 |
PIC16LF1703-E/ST 概述
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, peripherals, and I/O on one die. It belongs to the broader hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> integrated circuit -> semiconductor. PIC microcontrollers use a RISC-based Harvard architecture and Modified Harvard memory map, executing one instruction per clock cycle at speeds up to 32 MHz (8 MIPS). The 'LF' prefix designates the low-voltage / low-power 'F' core variant, supporting 1.8V to 3.6V operation.
Key features of the PIC16LF1703-E/ST include 2K Words (3.5KB) Flash program memory, 256B RAM, a 10-bit ADC with multiple channels, integrated op-amps, DAC modules, and a wide operating voltage range of 1.8V to 3.6V. The 14-TSSOP surface-mount package is only 4.40 mm wide, ideal for space-constrained designs.
The device implements Microchip's enhanced mid-range 8-bit core with a 14-bit instruction word. On-chip peripherals include a configurable 10-bit Analog-to-Digital Converter, Complementary Waveform Generator (CWG), Numerically Controlled Oscillator (NCO), and multiple timers. The 32 MHz internal oscillator eliminates external crystal requirements in many designs, reducing BOM cost.
Typical applications include IoT sensor nodes, low-power consumer electronics, battery management accessories, LED lighting controllers, and small home appliances. The 14-pin TSSOP footprint is compatible with standard SOIC-14 hand-soldering tools.
When designing with this MCU, place a 100 nF decoupling capacitor as close as possible to VDD and use a 10 µF bulk capacitor on the supply rail. For low-power designs, leverage the device's sleep modes and peripheral module disable bits to reduce quiescent current below typical 50 nA levels.
This page synthesizes distributor pricing, drop-in package-compatible alternatives, application circuits, and design notes not found in the manufacturer datasheet alone, helping you evaluate the PIC16LF1703-E/ST for your next low-power embedded design.
直接替换替代料： PIC16LF1703-E/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： PIC16LF1703-E/ST （相同外形与封装尺寸） ——差异在于 ADC, Operating Temperature, Package, Program Memory (Flash), Comparators.
快速对比工具——选择替代料号进行并排对比：
PIC16LF1703-I/ST
✅ 直接替换📋 参考替代料（不在目录中）
PIC16LF1703-E/P
✅ 直接替换✓ 有现货
$0.65 / 个
查看数据手册 →PIC16LF1703-E/ML
✅ 直接替换✓ 有现货
$0.44 / 个
查看数据手册 →PIC16LF1704-I/ST
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.52 / 个
查看数据手册 →PIC16LF1705-I/ST
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.05 / 个
查看数据手册 →PIC16F1703-I/ST
✅ 直接替换✓ 有现货
$0.84 / 个
查看数据手册 →PIC16LF1703-E/ST 最大额定值与电气特性
| Family | PIC16F/LF170x |
| Core | Enhanced Mid-Range 8-bit (PIC16) |
| Program Memory (Flash) | 3.5 KB (2K x 14 words) |
| Data RAM | 256 B |
| Maximum CPU Speed | 32 MHz (8 MIPS) |
| Operating Voltage Range | 1.8 V to 3.6 V |
| ADC | 10-bit, multiple channels |
| 封装 | 14-TSSOP (0.173" / 4.40 mm width) |
| 安装类型 | Surface Mount |
| 工作温度 | -40C to +125C (Extended, '-E' suffix) |
| 引脚数量 | 14 |
| MSL 等级 | 1 (per JEDEC J-STD-020) |
| RoHS 状态 | Compliant |
PIC16LF1703-E/ST 引脚配置
| 引脚 1 | VDD |
| 引脚 2 | RA5 |
| 引脚 3 | RA4 |
| 引脚 4 | RA3 |
| 引脚 5 | RC5 |
| 引脚 6 | RC4 |
| 引脚 7 | RC3 |
| 引脚 8 | RC2 |
| 引脚 9 | RC1 |
| 引脚 10 | RC0 |
| 引脚 11 | RA2 |
| 引脚 12 | RA1 |
| 引脚 13 | RA0 |
| 引脚 14 | VSS |
典型应用
PIC16LF1703-E/ST 适用于 6 应用s: IoT Wireless Sensor Node, LED Lighting Controller, Battery Management Accessory, Small Home Appliance Control, Wearable Health Monitor, Industrial Sensor Interface.
IoT Wireless Sensor Node
The PIC16LF1703-E/ST fits IoT wireless sensor nodes because its 1.8V to 3.6V operating range matches a single Li-ion or 2xAA battery, while the 32 MHz speed and 3.5 KB Flash run basic sensor acquisition and protocol drivers. The 10-bit ADC supports direct connection of analog sensors (temperature, light, gas), eliminating external ADC ICs. Power consumption falls below 50 nA in sleep mode with the nanoWatt technology, extending battery life to years. Place the MCU between the battery and an attached sub-GHz or BLE module; unlike higher-end Cortex-M0 parts it does not require an external LDO or crystal in many designs.
推荐
LED Lighting Controller
The PIC16LF1703-E/ST is well-suited for LED lighting controllers because the integrated 10-bit PWM channels and high-speed timer drive constant-current LED drivers directly without external PWM ICs. The 32 MHz CPU handles DMX-512 or DALI protocol parsing with margin. The 1.8V to 3.6V range allows direct battery operation for portable fixtures. Unlike dedicated LED drivers, the general-purpose MCU enables custom dimming curves, color mixing, and wireless control integration in one IC. Place it adjacent to the LED driver IC with proper ground isolation for analog current sense.
推荐
Battery Management Accessory
The PIC16LF1703-E/ST supports battery management accessories by combining a 10-bit ADC for voltage and current monitoring, integrated op-amps for current sensing, and a 1.8V to 3.6V supply range that matches single-cell Li-ion packs. The 3.5 KB Flash fits state-of-charge algorithms, while the 32 MHz speed performs coulomb counting calculations in real time. Unlike dedicated fuel gauge ICs, the general-purpose MCU allows custom charging profiles and USB-PD negotiation in a single chip. Estimated: average active current ~1 mA at 32 MHz gives weeks of operation on a 2000 mAh cell.
推荐
Small Home Appliance Control
The PIC16LF1703-E/ST drives small home appliances like coffee makers, fans, and humidifiers because its integrated 10-bit ADC reads temperature and humidity sensors directly, and the 32 MHz core runs PID control loops with sufficient headroom. The 14-TSSOP surface-mount package fits compact appliance enclosures. Unlike mechanical timers or discrete logic, the programmable MCU enables custom user interfaces, scheduling, and energy-saving modes. Place it close to the power switching transistors with proper isolation from mains AC.
推荐
Wearable Health Monitor
The PIC16LF1703-E/ST is appropriate for wearable health monitors thanks to its nanoWatt technology with sleep current below 50 nA, integrated 10-bit ADC for heart rate and SpO2 sensor reading, and small 14-TSSOP package fitting wristband form factors. The 32 MHz speed processes biosignal filtering algorithms. Unlike dedicated bio-sensor front-ends, the general-purpose MCU allows custom algorithms and BLE stack integration. Estimated: with duty-cycled sensing, the device can operate for weeks from a small Li-Po cell.
推荐
Industrial Sensor Interface
The PIC16LF1703-E/ST with its Extended -40C to +125C temperature range suits industrial sensor interfaces in factory automation, HVAC, and process control. The 1.8V to 3.6V supply tolerance handles 24V industrial bus rails via local regulation. The integrated 10-bit ADC and op-amps condition 4-20 mA and 0-10V sensor signals directly. Unlike higher-cost industrial MCUs, the general-purpose PIC provides sufficient capability at <$1 price point for high-volume deployments. Place local 100 nF decoupling at VDD and bulk capacitance at the supply input.
推荐
推荐产品汇总
工程参考数据： PIC16LF1703-E/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 | PIC16LF1703-I/ST | PIC16LF1703-E/P | PIC16LF1704-I/ST | PIC16F1703-I/ST |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-TSSOP | 14-TSSOP (same) | 14-TSSOP (same) | 14-TSSOP (same) | 14-TSSOP (same) |
| Program Memory (Flash) | 3.5 KB | 3.5 KB | 3.5 KB | 7 KB | 3.5 KB |
| Data RAM | 256 B | 256 B | 256 B | 512 B | 256 B |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 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 | 2.3 V to 5.5 V |
| Operating Temperature | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| ADC | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
关键差异点
- Extended temperature range up to +125C （对比 PIC16LF1703-I/ST)
- Upgrade path to higher memory variants （对比 PIC16LF1704-I/ST and PIC16LF1705-I/ST)
- Low-voltage nanoWatt operation （对比 PIC16F1703-I/ST)
设计说明
Place a 100 nF ceramic decoupling capacitor as close as possible to the VDD pin (pin 1) and a 10 uF capacitor on the supply rail. For low-power designs leveraging nanoWatt sleep modes, ensure all unused I/O pins are configured as outputs (not inputs) to prevent floating inputs from causing current leakage. The PIC16LF1703-E/ST typically draws <50 nA in sleep mode with RTC enabled, making it suitable for battery-powered applications.
For the 14-TSSOP package with 0.65 mm pitch, use a 4-layer PCB with a continuous ground plane for best noise performance. Route analog signals (ADC inputs) away from PWM outputs and digital switching lines to minimize crosstalk. Estimated: keep analog traces <50 mm and use a ground guard ring around sensitive analog inputs to reduce digital switching noise pickup by 6-10 dB.
Do not exceed the absolute maximum VDD of 4.0 V (the LF core variant operates only to 3.6 V). For 5V-tolerant applications, choose the PIC16F1703 variant instead. Also ensure the MCLR pin (RA3) is pulled high through a 10 kohm resistor unless external reset is needed; floating MCLR can cause spurious resets. Programming via ICSP requires 5V-tolerant connections even on LF parts, so use a Microchip PICkit or ICD with appropriate level translation.
合规信息
RoHS compliant per Microchip product page and DigiKey/Mouser listings. Not AEC-Q100 qualified; PIC16LF1703-E/ST is industrial-grade, not automotive-grade.
