PIC16F1708-I/ML - 8-Bit 32MHz MCU, 7KB Flash, 20-QFN | Microchip
N.º da peça: PIC16F1708-I/ML ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $2.1 | $2,10 |
| 10 | $1.95 | $19,50 |
| 100 | $1.72 | $172,00 |
| 500 | $1.55 | $775,00 |
| 1.000 | $1.38 | $1.380,00 |
| 3.000 | $1.22 | $3.660,00 |
PIC16F1708-I/ML Visão geral
What is a PIC16F170x microcontroller? The PIC16F1704/1708/1709 family sits within Microchip's enhanced mid-range PIC16 lineup - an 8-bit RISC architecture MCU family used in cost-sensitive general-purpose embedded designs. It bridges low-end PIC10/12/16 baseline parts and higher-end PIC18/PIC24 devices, integrating analog functions traditionally implemented as external op-amps, comparators, and reference circuits. The -I/ML suffix indicates the industrial temperature grade (-40C to +85C) and the QFN-20 (4x4 mm) package option.
Key features include 32 MHz operation (200 ns instruction execution), two on-chip op-amps, Core Independent Peripherals (CLC, COG, NCO and ZCD), EUSART, two I2C/SPI interfaces, 17 source/sink capable I/O pins, and eXtreme Low Power features including <50 nA sleep currents. The PPS module gives board designers flexibility to remap digital peripherals to most I/O pins, reducing PCB layout constraints and enabling single PCB layouts across multiple product variants.
Typical applications span IoT sensor nodes, white goods and home appliances, lighting controls with TRIAC dimming via ZCD, battery chargers, power-conversion secondary-side control, low-cost medical and consumer devices, and small motor-control subsystems. The combination of analog integration and XLP low-power modes allows the device to replace multiple discrete analog components and run from small batteries for years.
When designing with the PIC16F1708-I/ML, ensure the QFN exposed pad is soldered to the PCB ground plane for thermal dissipation and electrical performance. Use MPLAB X IDE with the XC8 compiler and the PICkit or ICD programmer/debugger. Consider migrating to PIC16F171x (28- and 40-pin siblings) when more peripherals are needed without changing the firmware architecture. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes beyond the manufacturer datasheet to assist BOM selection and second-sourcing.
Alternativas drop-in para PIC16F1708-I/ML — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC16F1708-I/ML (mesmo formato e footprint) — diferindo em ADC, Package, Comparators, Program Memory (Flash), Communication.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16F1708-E/ML
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16F1708T-I/ML
✅ Drop-In✓ Em estoque
$0.548 / unidade
Ver ficha técnica →PIC16F1704-I/ML
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
PIC16F1704-I/ST
✅ Drop-In✓ Em estoque
$0.62 / unidade
Ver ficha técnica →PIC16F1708-I/ML Classificações máximas e características elétricas
| Core Architecture | PIC16 8-bit RISC enhanced mid-range |
| CPU Speed | 32 MHz (200 ns instruction cycle) |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data SRAM | 512 bytes |
| Data EEPROM | 256 bytes |
| ADC | 10-bit, up to 17 channels |
| DAC | 8-bit |
| On-chip Op-Amps | 2 x rail-to-rail |
| Comparators | 2 x high-speed |
| Core Independent Peripherals | CLC, COG/NCO, ZCD |
| PWM | 2 x 10-bit |
| Timers | 8-bit and 16-bit |
| Communication | EUSART, 2x I2C/SPI |
| I/O Pins | 17 (source/sink capable) |
| Peripheral Pin Select (PPS) | Yes |
| Operating Voltage | 2.3 V to 5.5 V |
| Temperatura de operação | -40C to +85C (Industrial) |
| Encapsulamento | 20-pin QFN (4x4 mm), ML suffix |
| Nível MSL | 1 |
| Status RoHS | Compliant |
| Lead-Free | Yes |
Configuração de pinos do PIC16F1708-I/ML
| Pino 1 | RA5 — Bidirectional I/O, DAC ZCD output |
| Pino 2 | RA4 — Bidirectional I/O, op-amp output |
| Pino 3 | RA3 — Bidirectional I/O, analog input |
| Pino 4 | RA2 — Bidirectional I/O, analog input |
| Pino 5 | RA1 — Bidirectional I/O, op-amp non-inverting input |
| Pino 6 | RA0 — Bidirectional I/O, op-amp inverting input |
| Pino 7 | VSS — Ground reference |
| Pino 8 | RA7 — Bidirectional I/O, ICSPCLK |
| Pino 9 | RA6 — Bidirectional I/O, ICSPDAT |
| Pino 10 | RC0 — Bidirectional I/O, analog input |
| Pino 11 | RC1 — Bidirectional I/O, analog input |
| Pino 12 | RC2 — Bidirectional I/O, analog input |
| Pino 13 | RC3 — Bidirectional I/O, analog input |
| Pino 14 | RC4 — Bidirectional I/O |
| Pino 15 | RC5 — Bidirectional I/O |
| Pino 16 | RC6 — Bidirectional I/O, EUSART TX |
| Pino 17 | RC7 — Bidirectional I/O, EUSART RX |
| Pino 18 | VSS (EP) — Exposed thermal pad, must be soldered to ground plane |
| Pino 19 | VDD — Positive supply voltage 2.3V-5.5V |
| Pino 20 | RB7 — Bidirectional I/O |
Aplicações típicas
PIC16F1708-I/ML é adequado para 7 aplicaçãos: IoT Wireless Sensor Node, TRIAC-Dimming LED Lighting Control, White Goods and Home Appliance Control, Battery Charging and Power-Conversion Control, Low-Cost Medical and Consumer Health Devices, Small Motor and Fan Control, Industrial Sensor and Process-Interface Modules.
IoT Wireless Sensor Node
The PIC16F1708-I/ML is well-suited to battery-powered IoT sensor nodes thanks to its eXtreme Low Power (XLP) sleep current below 50 nA and on-chip 10-bit ADC with two rail-to-rail amplifiers. The integrated op-amps can directly interface to resistive bridge sensors (load cells, RTDs) without external instrumentation amplifiers, reducing BOM by 2-3 components. With EUSART or I2C/SPI driving an external LoRa, BLE, or Sub-GHz radio, the part supports multi-year coin-cell operation. PPS routing lets the same QFN-20 footprint host different sensor daughterboards without firmware changes, accelerating product family development.
Recomendado
TRIAC-Dimming LED Lighting Control
The PIC16F1708-I/ML's on-chip Zero-Cross Detect (ZCD) peripheral eliminates the external optocoupler and triac-drive circuitry in AC-line dimmer designs. The COG/NCO and 10-bit PWM with 32 MHz clock generate phase-angle-controlled gate pulses for leading-edge or trailing-edge TRIAC dimming at low BOM cost. Two high-speed comparators handle current sensing for constant-current LED regulation, while the 17 I/O and EUSART enable addressable DMX512 or 0-10V analog dimming. The QFN-20 (4x4 mm) footprint fits inside the can of a typical A19 or MR16 LED bulb.
Recomendado
White Goods and Home Appliance Control
The PIC16F1708-I/ML serves as the main controller in washing machines, dishwashers, refrigerators, microwave ovens, and induction cooktops. Its 32 MHz CPU and 7 KB Flash handle user-interface menus, sensor fusion, and BLDC/PMSM motor control loops, while the on-chip op-amps and comparators replace discrete analog signal-conditioning circuits. Industrial -40C to +85C temperature rating supports under-cabinet and outdoor appliance environments. IEC 60730 class B software safety libraries are available from Microchip for compliance with household appliance functional-safety standards.
Recomendado
Battery Charging and Power-Conversion Control
The PIC16F1708-I/ML is well-matched to secondary-side control in flyback, buck, and boost converters as well as Li-ion/LiFePO4/NiMH battery chargers. The two high-speed comparators implement peak-current-mode control with cycle-by-cycle current limiting at switching frequencies up to several hundred kHz. The CLC module enables hardware-based valley switching, burst-mode, and synchronous-rectifier timing without CPU intervention, improving efficiency at light load. The 8-bit DAC plus op-amp form a complete voltage regulation loop, while EUSART supports SMBus / PMBus telemetry to a system host.
Recomendado
Low-Cost Medical and Consumer Health Devices
The PIC16F1708-I/ML's on-chip op-amps with low-offset and the 10-bit ADC with internal voltage reference fit pulse-oximeter, thermometer, blood-pressure, and glucose-meter signal chains. eXtreme Low Power sleep currents below 50 nA extend battery life on coin-cell powered consumer wearables. CLC and COG hardware peripherals offload waveform generation, leaving CPU cycles for BLE stack or display driving. Industrial -40C to +85C grade supports storage and shipping temperature profiles required by retail consumer health products.
Recomendado
Small Motor and Fan Control
The PIC16F1708-I/ML drives small BLDC, PMSM, and single-phase AC fan motors in HVAC, server-cooling, and appliance applications. The COG/NCO module generates complementary PWM with programmable dead-time for half-bridge FET drivers like the MCP8026, while the two high-speed comparators implement BEMF sensing for sensorless trapezoidal commutation. On-chip op-amps condition current-sense shunt amplifier signals without external components. The 32 MHz CPU and 7 KB Flash are sufficient for sensorless FOC firmware on small motors up to several hundred watts.
Recomendado
Industrial Sensor and Process-Interface Modules
The PIC16F1708-I/ML provides analog and digital signal conditioning in 4-20 mA, 0-10 V, and RTD/thermocouple industrial sensor transmitters. The two rail-to-rail on-chip op-amps implement PGA and active filter stages for low-level transducer signals, while the 10-bit ADC digitizes the conditioned signal for EUSART or I2C transmission. CLC peripherals implement HART or IO-Link protocol framing in hardware, reducing firmware complexity. The QFN-20 (4x4 mm) industrial-grade package suits DIN-rail sensor modules operating at -40C to +85C with galvanic isolation.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16F1708-I/ML — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16F1708-E/ML | PIC16F1708T-I/ML | PIC16F1704-I/ML | PIC16F1704-I/ST |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-QFN (4x4 mm) | 20-QFN (4x4 mm) - same | 20-QFN (4x4 mm) - same | 20-QFN (4x4 mm) - same | 20-TSSOP - different, PCB swap |
| Flash Memory | 7 KB | 7 KB | 7 KB | 4 KB | 4 KB |
| SRAM | 512 B | 512 B | 512 B | 256 B | 256 B |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Op-Amps | 2 | 2 | 2 | 2 | 2 |
| Temperature Grade | -40C to +85C (I) | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
| Lifecycle Status | Active | Active | Active | Active | Active |
Principais diferenciais
- Highest on-chip analog integration in PIC16F170x QFN-20 family (vs PIC16F1704-I/ML)
- Industrial temperature grade standard for commercial appliance designs (vs PIC16F1708-E/ML)
- Peripheral Pin Select flexibility without firmware rebuild (vs PIC16F1708T-I/ML)
Notas de projeto
The QFN-20 package has an exposed thermal pad (pin 18) that MUST be soldered to a PCB ground pad to meet electrical and thermal specifications. Use an array of thermal vias (typically 9-16, 0.3 mm diameter) under the pad to conduct heat into inner copper planes. Per Microchip Microchip PIC16F1708 datasheet, the thermal pad improves power dissipation and reduces ground bounce on the ADC. The specific pad value is not published in the provided excerpt.
Estimated: at VDD=5V, 32 MHz active, the PIC16F1708-I/ML typically draws 5-8 mA. Add a 100 nF decoupling capacitor within 5 mm of VDD (pin 19) plus a bulk 10 uF capacitor on the supply trace. Place analog and digital ground returns separately and tie them at a single point under the IC to avoid ground loops through the ADC reference. For battery applications, leverage the XLP sleep current below 50 nA by configuring peripherals in IDLE/SLEEP modes between sensor reads.
Do not leave ICSPCLK (RA6) or ICSPDAT (RA7) floating in production - either assign them as analog inputs with the TRIS ran off, or add 10 kΩ pull-ups. The PPS module must be unlocked before configuration writes - a CONFIG LOCK sequence in code is mandatory or the peripheral mapping silently fails. The on-chip op-amps have a limited input common-mode window; exceeding the rail-to-rail range by more than 0.3 V causes phase reversal on the output stage. Always consult the electrical characteristics section of the manufacturer datasheet for full input common-mode limits.
Informações de conformidade
Microchip PIC16F1708-I/ML is RoHS compliant per Microchip product page; industrial -40C to +85C grade. Not AEC-Q100 qualified - choose PIC16F1708-E/ML for AEC-Q100 extended temperature grade or PIC16F1708T-I/ML with -Q1 suffix for automotive.
