PIC16LF1703-I/ML - 8-bit MCU, 3.5KB Flash, 10-bit ADC | Microchip
料号： PIC16LF1703-I/ML ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.92 | $0.92 |
| 10 | $0.83 | $8.30 |
| 100 | $0.69 | $69.00 |
| 500 | $0.58 | $290.00 |
| 1,000 | $0.51 | $510.00 |
PIC16LF1703-I/ML 概述
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path that integrates a CPU, Flash program memory, RAM, and a rich set of peripherals into one device. Within the broader taxonomy, an 8-bit MCU is a subset of microcontrollers (MCU -> microcontroller -> embedded processor -> semiconductor), which are themselves a category of integrated circuits. The PIC16LF1703 belongs to the PIC16F1xxx family and supports ICSP (In-Circuit Serial Programming) plus in-circuit debugging through two I/O pins, enabling rapid prototyping without removing the device from the board.
Key features include a 10-bit ADC with up to 8 channels, two op-amps, a DAC, two comparators, a 16-bit PWM module, and four 8-bit timers, providing high analog integration that traditionally required external components. The XLP technology provides ultra-low sleep current, making the device suitable for energy-harvesting and always-on applications where coin-cell life matters.
The PIC16LF1703 uses an enhanced Harvard RISC architecture with a 14-bit instruction word, allowing most instructions to execute in a single 125 ns cycle at 32 MHz. Its peripherals connect via a Peripheral Pin Select (PPS) matrix, simplifying PCB routing by letting designers remap digital functions to any available I/O.
Typical applications include IoT sensor nodes, wearables, consumer electronics, smart home devices, and industrial control subsystems. The combination of low power, small footprint, and rich analog integration suits cost-sensitive designs that need a single-chip solution.
When designing with this device, ensure your PCB layout reserves the exposed pad (EP) as a thermal and electrical ground, since QFN packages rely on the EP for heat dissipation. Decouple VDD with a 100 nF ceramic capacitor placed within 3 mm of the power pin for stable ADC readings.
This page synthesizes verified distributor pricing, drop-in alternatives, AEO-optimized FAQ, and design notes that supplement the manufacturer datasheet with practical, real-world guidance.
直接替换替代料： PIC16LF1703-I/ML ——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-I/ML （相同外形与封装尺寸） ——差异在于 Package, ADC, Program Memory (Flash), I/O Pins, Operating Temperature.
快速对比工具——选择替代料号进行并排对比：
PIC16F1703-I/ML
✅ 直接替换✓ 有现货
$0.78 / 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 →PIC16F1829-I/ML
✅ 直接替换✓ 有现货
$1.18 / 个
查看数据手册 →PIC16F1824-I/ML
✅ 直接替换✓ 有现货
$1.28 / 个
查看数据手册 →PIC16LF1554-I/ML
✅ 直接替换✓ 有现货
$0.84 / 个
查看数据手册 →PIC16LF1503-I/ML
✅ 直接替换📋 参考替代料（不在目录中）
PIC16LF1703-I/ML 最大额定值与电气特性
| Core Architecture | 8-bit PIC16 enhanced mid-range (RISC) |
| Program Memory (Flash) | 3.5 KB (2K x 14 instructions) |
| Data RAM | 256 bytes |
| CPU Clock Frequency | Up to 32 MHz |
| Instruction Throughput | 8 MIPS at 32 MHz |
| Instruction Width | 14 bits (Enhanced mid-range) |
| Operating Voltage Range | 1.8 V to 3.6 V |
| I/O Pins | 12 (with PPS remap) |
| ADC | 10-bit, 8 channels |
| Comparators | 2 |
| DAC | 5-bit, 1 channel |
| Op-Amps | 2 |
| PWM Channels | 16-bit enhanced PWM |
| Timers | 4 x 8-bit, 1 x 16-bit |
| 封装 | 16-pin QFN-EP (4x4 mm) |
| 工作温度 | -40C to +85C (industrial) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
PIC16LF1703-I/ML 引脚配置
| 引脚 1 | RA5/ICSPDAT/ICSPCLK — I/O / ICSP data / in-circuit serial programming clock |
| 引脚 2 | RA0/AN0/C1IN0+ — I/O / analog input 0 / comparator input |
| 引脚 3 | RA1/AN1/C1IN0-/C2IN0- — I/O / analog input 1 / comparator input |
| 引脚 4 | RA2/AN2 — I/O / analog input 2 |
| 引脚 5 | RA3/MCLR/VPP — I/O / reset (active low) / programming voltage |
| 引脚 6 | RA4/AN3 — I/O / analog input 3 |
| 引脚 7 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
| 引脚 8 | VSS — Ground reference |
| 引脚 9 | RB4/AN10 — I/O / analog input 10 |
| 引脚 10 | RB5/AN11 — I/O / analog input 11 |
| 引脚 11 | RB6/ICSPCLK — I/O / in-circuit serial programming clock |
| 引脚 12 | RB7/ICSPDAT — I/O / ICSP data |
| 引脚 13 | RC0 — I/O |
| 引脚 14 | RC1 — I/O |
| 引脚 15 | RC2 — I/O |
| 引脚 16 | RC3 — I/O |
典型应用
PIC16LF1703-I/ML 适用于 7 应用s: IoT Sensor Nodes, Wearable Fitness Bands, Smart Home Wall Switches, Battery-Powered Medical Devices, Consumer Remote Controls, Industrial Sensor Transmitters, LED Lighting Controllers.
IoT Sensor Nodes
The PIC16LF1703-I/ML's XLP nano-Watt sleep current and 1.8 V minimum VDD make it ideal for battery-powered IoT sensor nodes that must run for years on a coin cell. The 10-bit 8-channel ADC with built-in op-amps and comparators enables direct sensor interface (temperature, humidity, light, gas) without external analog components. With 3.5 KB Flash and 256 bytes RAM, the device can run a basic BLE beacon or LoRaWAN end-node state machine.
推荐
Wearable Fitness Bands
The PIC16LF1703-I/ML's small QFN-16 EP 4x4 mm footprint and 1.8 V operating range suit wearable fitness bands where PCB space is constrained and battery life is critical. The 16-bit enhanced PWM can drive LED indicators directly, while the 10-bit ADC reads heart-rate or motion sensor analog signals. XLP technology enables sleep current in the nano-amp range during idle periods between sensor readings.
推荐
Smart Home Wall Switches
The PIC16LF1703-I/ML can decode capacitive-touch buttons through its on-chip comparators and op-amps, eliminating the need for an external touch controller. Its 16 I/O pins (with PPS) accommodate multiple LEDs, a triac control, and zero-cross detection for mains dimming. The device's wide 1.8V-3.6V range, when paired with a small switching supply, enables compact switch designs that fit behind a wall plate.
推荐
Battery-Powered Medical Devices
The PIC16LF1703-I/ML's ultra-low XLP sleep current and 256-byte RAM footprint make it well-suited for portable medical devices such as pill reminders, glucose meters, and digital thermometers. The 10-bit ADC reads thermistor or glucometer strip signals, while the built-in op-amps condition low-level analog signals without external amplifiers. The compact 16-pin QFN is small enough to fit inside a glucose meter housing.
推荐
Consumer Remote Controls
The PIC16LF1703-I/ML integrates well in IR / RF remote controls where low-power sleep, AES-capable peripherals, and small package are priorities. Its 3.5 KB Flash is enough to run NEC / RC5 / RC6 codes plus custom macros, while 8 MIPS throughput handles button-debounce and IR-pulse generation. Operating from a single 3 V coin cell, the device can drive a low-power infrared LED directly via the 16-bit PWM.
推荐
Industrial Sensor Transmitters
The PIC16LF1703-I/ML provides 4-20 mA loop-powered sensor transmitters with the necessary analog integration: 10-bit ADC, op-amps, comparators, and 5-bit DAC. Its industrial temperature grade (-40C to +85C) and small QFN package suit compact field-mounting transmitters. Internal op-amps can be configured as either buffer or PGA, eliminating external components.
推荐
LED Lighting Controllers
The PIC16LF1703-I/ML's 16-bit enhanced PWM and 10-bit ADC combine to deliver highly efficient LED controllers for low-power lighting. The device generates smooth logarithmic dimming curves, supports analog or PWM input dimming via op-amps, and provides on-chip temperature feedback for thermal foldback. The QFN-16 EP package and minimal external components keep the BOM small.
推荐
推荐产品汇总
工程参考数据： PIC16LF1703-I/ML ——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 | PIC16F1703-I/ML | PIC16LF1703-E/ML | PIC16F1829-I/ML | PIC16F1824-I/ML | PIC16LF1554-I/ML | PIC16LF1503-I/ML |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | QFN-16 EP (4x4 mm) | QFN-16 EP (4x4 mm) - same | QFN-16 EP (4x4 mm) - same | QFN-16 EP (4x4 mm) - same | QFN-16 EP (4x4 mm) - same | QFN-16 EP (4x4 mm) - same | QFN-16 EP (4x4 mm) - same |
| Flash Memory | 3.5 KB | 3.5 KB | 3.5 KB | 14 KB | 4 KB | 1 KB | 2 KB |
| RAM | 256 bytes | 256 bytes | 256 bytes | 1 KB | 256 bytes | 128 bytes | 64 bytes |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 5.5 V | 1.8 V to 3.6 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 3.6 V |
| CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 20 MHz |
| ADC | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 12 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 6 channels |
| Op-Amps / DAC | 2 op-amps + 5-bit DAC | 2 op-amps + 5-bit DAC | 2 op-amps + 5-bit DAC | 2 op-amps + 5-bit DAC | 2 op-amps + 5-bit DAC | None | None |
| XLP Low Power | Yes (nano-Watt sleep) | Yes | Yes | Yes | Yes | Yes | Yes |
关键差异点
- High analog integration in 16-pin package （对比 PIC16LF1554-I/ML)
- Double Flash and 4x RAM with same pinout （对比 PIC16LF1503-I/ML)
- Industrial temperature range option in same package （对比 PIC16LF1703-I/ML vs PIC16LF1703-E/ML)
- 5 V operation without redesign （对比 PIC16F1703-I/ML)
设计说明
The PIC16LF1703-I/ML requires a 100 nF (or larger) decoupling capacitor placed within 3 mm of VDD pin 7. A bulk capacitor on the order of 1-10 uF is recommended on the battery node to suppress load-dump transients when driving LEDs or motors. The VDD range is 1.8 V to 3.6 V; operation above 3.6 V can permanently damage the LF variant. Add a reverse-protection diode if the design uses a coin cell.
The QFN-16 EP package uses the exposed pad as the primary thermal path. Use a PCB land pattern with at least 4 thermal vias (0.3 mm drill, 0.5 mm pitch) connecting the EP to a 1 square inch copper pour on the bottom layer. Estimated theta_JA is 60 C/W with this layout - sufficient for industrial -40C to +85C operation at moderate loads. A poor EP solder joint can elevate junction temperature by 30C or more.
PPS (Peripheral Pin Select) lets you reassign most digital peripherals (UART, SPI, I2C, PWM, interrupts) to nearly any I/O pin, simplifying PCB routing. Plan your I/O assignments in MPLAB X IDE first using the pin-manager, then route the board - the pinout from the IDE-generated headers is the source of truth. PPS remapping is one-time in CCP registers and persists through reset if configured properly.
Pin 5 (RA3/MCLR/VPP) is shared between general-purpose I/O and the reset function. If used as I/O, disable MCLR via configuration bits (MCLRE = 0), otherwise the device will reset on falling edge of pin 5. The ICSP pins (RB6/ICSPCLK and RB7/ICSPDAT) must be left free for in-circuit programming during development, otherwise a production programmer cannot re-flash the device.
For ADC accuracy, route analog input traces away from digital PWM and oscillator traces; keep analog ground (AGND) as a separate net tied to digital ground (DGND) at one point only. Use a 10 nF or larger cap on the analog reference (if used) to suppress noise. Operating the ADC at a slower clock (e.g. FOSC/16) yields better linearity at the cost of conversion time.
合规信息
RoHS compliant per Microchip product page. Not AEC-Q100 qualified; AEC-Q100 automotive grade is on the PIC16F1703-E/ML automotive part number. Lead-free and halogen-free packaging standard.
