PIC16LF1708-E/SO - 8-bit MCU, 4KB Flash, 512B RAM, SOIC-20 | Microchip
料号： PIC16LF1708-E/SO ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.62 | $0.62 |
| 10 | $0.59 | $5.90 |
| 100 | $0.55 | $55.00 |
| 500 | $0.51 | $255.00 |
| 1,000 | $0.47 | $470.00 |
PIC16LF1708-E/SO 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripherals such as timers, ADC, communication interfaces, and I/O pins. In the system hierarchy, an MCU belongs to the embedded computing layer that sits above simple logic ICs and below more complex microprocessors. The PIC16LF1708 falls within the 8-bit RISC MCU category, characterized by a streamlined instruction set that simplifies firmware development while keeping silicon cost low.
Key features include on-chip op amps, Core Independent Peripherals (CIPs) such as Configurable Logic Cells (CLC), Complementary Output Generator (COG), and Zero-Cross Detect (ZCD), as well as a 10-bit ADC with computation, a 5-/8-bit DAC, and high-speed comparators. The XLP architecture achieves nanoWatt sleep currents below 100 nA, making the device well suited for battery-powered sensors and IoT nodes. Multiple communication interfaces support UART, SPI, and I2C for flexible peripheral expansion.
From an architectural perspective, the PIC16LF1708 uses a Harvard RISC core with a 14-bit instruction word and a separate 8-bit data path, providing deterministic interrupt latency and predictable timing. Internal voltage reference, hardware limiting on the ADC, and PWM modules with dead-band control reduce external component count and PCB area in motor control, lighting, and power-conversion applications.
Typical applications include low-power IoT sensor nodes, consumer electronics remote controls, battery management for handheld instruments, LED lighting drivers, and small motor or fan control loops. The SOIC-20 footprint simplifies hand prototyping and rework in development labs.
When designing with this device, ensure VDD decoupling is placed within 5 mm of the package, and that MCLR is pulled high through a resistor for normal operation. Pair the part with MPLAB X IDE and XC8 compiler to leverage the full peripheral library.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that are not aggregated on a single manufacturer or distributor datasheet page.
直接替换替代料： PIC16LF1708-E/SO ——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： PIC16LF1708-E/SO （相同外形与封装尺寸） ——差异在于 Package, ADC, Core Architecture, Operating Temperature, Comparators.
快速对比工具——选择替代料号进行并排对比：
PIC16LF1708-I/SO
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.05 / 个
查看数据手册 →PIC16LF1708-E/P
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC16LF1708-E/SS
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.65 / 个
查看数据手册 →PIC16F1708-E/SO
✅ 直接替换✓ 有现货
$1.18 / 个
查看数据手册 →PIC16LF1707T-I/SO
✅ 直接替换✓ 有现货
$0.49 / 个
查看数据手册 →PIC16LF1507-E/SO
✅ 直接替换✓ 有现货
$0.55 / 个
查看数据手册 →PIC16LF1708-E/SO 最大额定值与电气特性
| Core Architecture | 8-bit RISC Harvard (PIC) |
| Program Memory (Flash) | 4 KB |
| Data Memory (RAM) | 512 B |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| 工作温度 | -40 C to +125 C |
| I/O Pins | 18 |
| ADC | 10-bit, up to 12 channels |
| DAC | 5-/8-bit, 1 channel |
| Comparators | 2 (high-speed) |
| Op Amps | 2 on-chip |
| Timers | 8-/16-bit (multiple) |
| Communication Interfaces | UART, SPI, I2C |
| Core Independent Peripherals | CLC, COG, ZCD, NCO |
| 封装 | SOIC-20 (SO) 7.50 mm |
| 安装类型 | Surface Mount |
| MSL 等级 | 1 |
| RoHS 状态 | Compliant |
PIC16LF1708-E/SO 引脚配置
| 引脚 1 | RA3/AN3/VREF+ — Analog input 3 / positive voltage reference / GPIO |
| 引脚 2 | RA4/AN4 — Analog input 4 / GPIO |
| 引脚 3 | RA5/AN5 — Analog input 5 / GPIO |
| 引脚 4 | RA6/OSC2 — GPIO / crystal oscillator output |
| 引脚 5 | RA7/OSC1 — GPIO / crystal oscillator input |
| 引脚 6 | VSS — Ground reference |
| 引脚 7 | RA0/AN0 — Analog input 0 / GPIO |
| 引脚 8 | RA1/AN1 — Analog input 1 / GPIO |
| 引脚 9 | RA2/AN2 — Analog input 2 / GPIO |
| 引脚 10 | RC0 — GPIO / PWM output |
| 引脚 11 | RC1 — GPIO / PWM output |
| 引脚 12 | RC2 — GPIO / PWM output |
| 引脚 13 | RC3 — GPIO / PWM output |
| 引脚 14 | RC4 — GPIO / I2C/SPI |
| 引脚 15 | RC5 — GPIO / I2C/SPI |
| 引脚 16 | RC6 — GPIO / UART TX |
| 引脚 17 | RC7 — GPIO / UART RX |
| 引脚 18 | VDD — Positive supply voltage |
| 引脚 19 | VSS — Ground reference |
| 引脚 20 | MCLR/VPP — Master clear reset / programming voltage |
典型应用
PIC16LF1708-E/SO 适用于 6 应用s: Battery-Powered IoT Sensor Nodes, Consumer Remote Controls, LED Lighting Drivers, Small Motor and Fan Control, Handheld Instruments and Metering, Industrial Control Modules.
Battery-Powered IoT Sensor Nodes
The PIC16LF1708-E/SO is well matched to battery-powered IoT sensor nodes thanks to its nanoWatt XLP sleep currents below 100 nA, wide 1.8 V to 3.6 V supply range, and on-chip 10-bit ADC. Engineers typically run the core at 32 MHz only during a sensor read, then enter sleep to extend coin-cell life to multiple years. The integrated op amps and comparators eliminate the need for external signal conditioning on thermistor, photodiode, or gas-sensor front ends, reducing BOM and PCB footprint in wireless sensor designs.
推荐
Consumer Remote Controls
For IR or RF remote controls, the PIC16LF1708-E/SO combines low-cost 4 KB Flash, deep-sleep currents under 100 nA, and flexible PWM peripherals for IR carrier generation. The 18 I/O pins are sufficient for keypad matrix scanning up to 8x8 and LED indicators. XLP sleep between button events keeps total quiescent draw in the microampere range, allowing alkaline AAA operation for the lifetime of the device without user-replaceable batteries.
推荐
LED Lighting Drivers
The PIC16LF1708-E/SO is an excellent fit for small LED lighting drivers due to its 5-/8-bit DAC, multiple PWM channels with dead-band control, and integrated op amps for current sensing. Engineers use the CLC and COG Core Independent Peripherals to drive MOSFET half-bridges without CPU intervention, reducing firmware overhead and improving dimming accuracy. The 1.8 V to 3.6 V supply range accepts direct Li-Ion or two-AA inputs for portable fixtures.
推荐
Small Motor and Fan Control
Brushless DC fan and small motor control loops benefit from the PIC16LF1708-E/SO's high-speed comparators, configurable CLC, and Complementary Output Generator (COG) peripherals. The 32 MHz core runs sensorless back-EMF zero-cross detection firmware in real time, while on-chip op amps condition the phase feedback without external amplifiers. Hardware dead-band control prevents shoot-through on the half-bridge, improving efficiency and EMI in compact motor designs.
推荐
Handheld Instruments and Metering
Handheld multimeters, clamp meters, and portable environmental testers leverage the PIC16LF1708-E/SO's combination of low power, integrated ADC, op amps, and -40 C to +125 C extended temperature range. The 10-bit ADC with computation performs oversampling and averaging in hardware, offloading the CPU for faster display updates. With XLP sleep below 100 nA, the device contributes negligibly to standby drain between measurements.
推荐
Industrial Control Modules
Industrial PLC expansion modules, sensor interface boards, and process-control front ends use the PIC16LF1708-E/SO to provide UART/SPI/I2C bridges to higher-level controllers. The extended -40 C to +125 C temperature range supports cabinet-mounted deployment, and the Core Independent Peripherals handle timing-critical tasks in hardware, freeing the CPU for protocol stacks. The SOIC-20 footprint simplifies optical-inspection-based manufacturing for high-volume industrial products.
推荐
推荐产品汇总
工程参考数据： PIC16LF1708-E/SO ——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 | PIC16LF1708-I/SO | PIC16F1708-E/SO | PIC16LF1707T-I/SO | PIC16LF1507-E/SO |
|---|---|---|---|---|---|
| Package | SOIC-20 (SO) | SOIC-20 (SO) - same | SOIC-20 (SO) - same | SOIC-20 (SO) - same | SOIC-20 (SO) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 4 KB | 4 KB | 4 KB | 2 KB | 1.75 KB |
| Data Memory (RAM) | 512 B | 512 B | 512 B | 256 B | 128 B |
| Supply Voltage | 1.8 V to 3.6 V | 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 3.6 V |
| Maximum CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 20 MHz / 10 MIPS |
| Operating Temperature | -40 C to +125 C | -40 C to +85 C | -40 C to +125 C | -40 C to +85 C | -40 C to +125 C |
| Op Amps | 2 | 2 | 2 | 1 | 0 |
| DAC | 5-/8-bit | 5-/8-bit | 5-/8-bit | 5-bit | 5-bit |
关键差异点
- 2 on-chip op amps reduce external analog BOM （对比 PIC16LF1507-E/SO)
- Core Independent Peripherals (CLC, COG, NCO) offload timing-critical tasks （对比 PIC16LF1707T-I/SO)
- 10-bit ADC with computation oversamples in hardware （对比 PIC16LF1507-E/SO)
设计说明
Estimated: at 32 MHz active and 3.3 V VDD, the PIC16LF1708-E/SO core draws roughly 4 to 6 mA. Decoupling requires a 100 nF X7R placed within 5 mm of VDD (pin 18) and a 10 uF bulk capacitor on the same rail. For battery designs, enable the on-chip voltage regulator's low-power mode and route all unused I/O as outputs driving low to minimize supply toggling current.
Place the 20 MHz crystal (or resonator) within 5 mm of OSC1/OSC2 (pins 5/4) and guard the traces with a ground pour to reduce EMI pickup. Keep the MCLR pull-up resistor (typically 10 kohm) close to pin 20 to provide a clean reset signal. SOIC-20 land pattern should use 1.27 mm pitch pads per JEDEC MS-013, with thermal reliefs on the ground pad to ease hand rework.
Do not leave the MCLR pin floating - a floating MCLR can trigger spurious resets in noisy environments. Always configure the unused I/O pins as outputs driving low rather than inputs to avoid shoot-through current on the internal ESD structures. When migrating firmware between PIC16LF1708 and PIC16F1708, verify ADC and DAC reference voltage ranges because the F-variant supports a wider VDD range that may invalidate 3.3 V assumptions.
合规信息
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified; for automotive designs use a PIC16F1708-E/SO Q-grade variant if available.
