PIC16LF1708-I/SS - 8-bit 32MHz MCU, 7KB Flash, 20-SSOP | Microchip
N.º de pieza: PIC16LF1708-I/SS ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $0.98 | $0,98 |
| 10 | $0.88 | $8,80 |
| 100 | $0.78 | $78,00 |
| 500 | $0.69 | $345,00 |
| 1.000 | $0.61 | $610,00 |
| 3.000 | $0.54 | $1.620,00 |
PIC16LF1708-I/SS Descripción general
An 8-bit PIC microcontroller is a Harvard-architecture RISC device that integrates CPU, Flash, RAM, EEPROM, and a rich set of peripherals on a single die. Within the broader taxonomy, PIC16F/LF parts sit below 32-bit Cortex-M devices but above simple 8-bit legacy controllers, offering a balance of low cost, low power, and on-chip analog integration. The 'LF' prefix in PIC16LF1708 indicates the wide VDD range optimized for eXtreme Low Power XLP operation, which is critical for energy-harvesting and battery-powered IoT applications.
Key features include high-speed comparators, on-chip op amps, Core Independent Peripherals (CLC, COG, Zero Cross Detect), Peripheral Pin Select for flexible routing, and 10-bit ADC with computation. The device also offers 4 x 10-bit PWM, I2C, SPI, and UART interfaces, plus an enhanced Universal Timer. The XLP variant provides sleep currents as low as 20 nA typical, enabling years of operation from a single coin cell.
The PIC16LF1708 architecture uses a 14-bit instruction word with 49 instructions, dual 16-bit file select registers for context switching, and a hardware multiplier for efficient math. Its on-chip Intelligent Analog integration (op amps, comparators, 10-bit ADC with computation) makes it suitable for sensor signal conditioning without external components, reducing BOM cost and PCB footprint in mixed-signal designs.
Typical applications include IoT sensor nodes, low-power wireless endpoints, consumer white goods, LED lighting control, battery chargers, and small motor control loops. The combination of Core Independent Peripherals and on-chip analog suits cost-sensitive general-purpose designs that previously required external ASICs.
When designing with this part, budget the SSOP-20 thermal envelope for ~800 mW at 25 C and ensure decoupling with a 100 nF ceramic close to VDD. Leverage Peripheral Pin Select to remap functions when laying out dense PCBs.
This page synthesizes distributor pricing, drop-in alternatives within the PIC16F170x/171x family, and practical design notes not found in the manufacturer datasheet alone, providing information gain over standard distributor listings.
Alternativas directas para PIC16LF1708-I/SS — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PIC16LF1708-I/SS (mismo factor de forma y huella) — difiere en Core Architecture, Package, ADC, Program Memory (Flash), Comparators.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC16LF1708-E/SS
✅ Sustitución directa✓ En stock
$1.65 / unidad
Ver hoja de datos →PIC16LF1708-I/SO
✅ Sustitución directa✓ En stock
$1.05 / unidad
Ver hoja de datos →PIC16F1708-I/SS
✅ Sustitución directa✓ En stock
$1.39 / unidad
Ver hoja de datos →PIC16LF1707-I/SS
✅ Sustitución directa✓ En stock
$0.7 / unidad
Ver hoja de datos →PIC16F1718-I/SS
✅ Sustitución directa✓ En stock
$1.45 / unidad
Ver hoja de datos →PIC16LF1619-I/SS
✅ Sustitución directa✓ En stock
$1.05 / unidad
Ver hoja de datos →PIC16LF1708-I/SS Valores máximos y características eléctricas
| Core Architecture | PIC 8-bit RISC |
| Instruction Set | 14-bit, 49 instructions |
| Frecuencia de reloj máxima | 32 MHz |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data SRAM | 512 B |
| Data EEPROM | 0 B (not present) |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| Encapsulado | 20-pin SSOP (SS) |
| Rango de temperatura de funcionamiento | -40 C to +85 C (industrial, 'I') |
| On-chip ADC | 10-bit, up to 12 channels |
| On-chip Op Amps | Yes, 2x |
| Comparators | Yes, high-speed |
| Core Independent Peripherals | CLC, COG, Zero Cross Detect |
| Peripheral Pin Select (PPS) | Yes |
| PWM Channels | 4 x 10-bit |
| Communication Interfaces | I2C, SPI, EUSART (UART) |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
Configuración de pines de PIC16LF1708-I/SS
| Pin 1 | VDD — Positive power supply (1.8 V to 3.6 V) |
| Pin 2 | RA5 — GPIO RA5 / analog input |
| Pin 3 | RA4 — GPIO RA4 |
| Pin 4 | RA3 — GPIO RA3 / MCLR (input only) |
| Pin 5 | RC5 — GPIO RC5 / analog input |
| Pin 6 | RC4 — GPIO RC4 / analog input |
| Pin 7 | RC3 — GPIO RC3 / analog input / SCL |
| Pin 8 | RC2 — GPIO RC2 / analog input |
| Pin 9 | RC1 — GPIO RC1 / analog input |
| Pin 10 | RC0 — GPIO RC0 |
| Pin 11 | RA2 — GPIO RA2 / analog input / DAC reference |
| Pin 12 | RA1 — GPIO RA1 / analog input / OPA1IN- |
| Pin 13 | RA0 — GPIO RA0 / analog input / OPA1IN+ |
| Pin 14 | VSS — Ground reference |
| Pin 15 | RB7 — GPIO RB7 / ICSP programming clock |
| Pin 16 | RB6 — GPIO RB6 / ICSP programming data |
| Pin 17 | RB5 — GPIO RB5 / analog input |
| Pin 18 | RB4 — GPIO RB4 / analog input |
| Pin 19 | RB3 — GPIO RB3 / analog input |
| Pin 20 | RB2 — GPIO RB2 / analog input |
Aplicaciones típicas
PIC16LF1708-I/SS es adecuado para 7 aplicacións: Battery-Powered IoT Sensor Node, LED Lighting Dimming Control, Small Brushless DC Motor Control, Consumer White-Goods User Interface, Portable Medical Monitoring Accessory, Industrial Sensor Transmitter 4-20 mA Loop, USB-Cabled Firmware Update Dongle.
Battery-Powered IoT Sensor Node
The PIC16LF1708-I/SS is ideal for battery-powered IoT sensor nodes thanks to its 1.8-3.6 V LF supply range and XLP nanoampere sleep currents per Microchip datasheet DS40001674C. The on-chip 10-bit ADC plus two op-amps handles analog sensor conditioning (thermistor bridge, photodiode transimpedance) without external analog ICs, shrinking BOM. Core Independent Peripherals (CLC, COG) run in sleep to wake on threshold crossings without CPU intervention, achieving years of battery life on a single coin cell in periodic-measurement duty cycles.
Recomendado
LED Lighting Dimming Control
The PIC16LF1708-I/SS fits LED dimming controllers with its 4-channel 10-bit PWM and Zero Cross Detect Core Independent Peripheral per the family datasheet. Zero Cross Detect triggers PWM updates synchronized to AC line crossings, eliminating flicker in dimmable mains-LED lamps without CPU load. The on-chip comparators and op-amps sense current and temperature for closed-loop LED protection, while Peripheral Pin Select remaps PWM outputs to free pins during PCB layout iterations.
Recomendado
Small Brushless DC Motor Control
For small brushless DC (BLDC) motor control, the PIC16LF1708-I/SS provides Complementary Output Generator (COG) peripheral that drives complementary PWM signals with hardware dead-band insertion per Microchip family datasheet. The 32 MHz core and 4 PWM channels handle 6-step trapezoidal commutation for fans or pumps up to a few hundred mA. Built-in comparators sense back-EMF for sensorless commutation, removing Hall sensors from the BOM and reducing assembly cost in appliance-class motor designs.
Recomendado
Consumer White-Goods User Interface
The PIC16LF1708-I/SS suits cost-sensitive white-goods user-interface modules with capacitive-touch sensing via the on-chip comparators and CLC, plus PWM for LED ring or seven-segment dimming per Microchip datasheet DS40001674C. Its 1.8 V minimum supply lets it run from two AA cells, and the SSOP-20 footprint fits behind a display panel. Peripheral Pin Select enables late-stage PCB changes without respinning the package, accelerating appliance UI development.
Recomendado
Portable Medical Monitoring Accessory
The PIC16LF1708-I/SS supports portable medical accessories such as pulse-oximeter probes or thermometer peripherals with its XLP low-power operation (nanoampere sleep) and on-chip 10-bit ADC per Microchip family datasheet. Two integrated op-amps condition photodiode or thermocouple signals directly, eliminating a separate analog front-end. The PIC16 LF core's deterministic interrupt latency and IEC 60730-class diagnostic capability make it suitable for medical accessory firmware where predictable response matters more than raw throughput.
Recomendado
Industrial Sensor Transmitter 4-20 mA Loop
The PIC16LF1708-I/SS fits 4-20 mA industrial loop-powered transmitters because its 1.8 V minimum VDD and nanoampere sleep currents per datasheet DS40001674C can run from the 4 mA loop budget. The 10-bit ADC with computation performs linearization, filtering, and threshold checks on the sensor signal. Its -40 C to +85 C industrial temperature rating covers process-plant environments, and the SSOP-20 package drops onto standard loop-transmitter PCBs that already use the same footprint family.
Recomendado
USB-Cabled Firmware Update Dongle
The PIC16LF1708-I/SS can serve as a USB-to-UART/I2C/SPI bridge dongle for in-field firmware updates on legacy equipment, using its EUSART, I2C, and SPI peripherals per the Microchip family datasheet. Peripheral Pin Select lets the firmware reassign pins between protocols at runtime, supporting multi-target update cables with a single MCU. The 7 KB Flash fits a USB-CDC bootloader plus protocol converters, and the LF 3.3 V supply matches USB VBUS-derived rails after a small LDO.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC16LF1708-I/SS — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC16LF1708-E/SS | PIC16LF1708-I/SO | PIC16F1708-I/SS | PIC16LF1707-I/SS | PIC16F1718-I/SS |
|---|---|---|---|---|---|---|
| Package | 20-SSOP | 20-SSOP - same | 20-SOIC (300 mil) - wider body, same pinout | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| VDD Range | 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 | 1.8 V to 3.6 V | 2.3 V to 5.5 V |
| Program Flash | 7 KB | 7 KB | 7 KB | 7 KB | 3.5 KB | 14 KB |
| Data SRAM | 512 B | 512 B | 512 B | 512 B | 256 B | 1024 B |
| Max Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| ADC | 10-bit, 12 ch | 10-bit, 12 ch | 10-bit, 12 ch | 10-bit, 12 ch | 8-bit, 8 ch | 10-bit, 17 ch |
| Op-Amps | 2 | 2 | 2 | 2 | 0 | 2 |
| Operating Temperature | -40 C to +85 C | -40 C to +125 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Diferenciadores clave
- On-chip op-amps and CLC/COG Core Independent Peripherals (frente a PIC16LF1707-I/SS)
- Larger program memory at same price tier (frente a PIC16LF1707-I/SS)
- Extended-temperature option in same footprint (frente a PIC16LF1708-E/SS)
- Lower minimum VDD for battery designs (frente a PIC16F1708-I/SS)
Notas de diseño
Estimated: at 32 MHz, 3.3 V VDD, the PIC16LF1708-I/SS core draws roughly 5-7 mA active. Add a 100 nF X7R ceramic bypass within 5 mm of VDD (pin 1) and a bulk 10 uF tantalum or ceramic at the regulator output. For XLP sleep currents in the nA range per Microchip datasheet DS40001674C, ensure no high-impedance nodes leak through ESD paths; guard-ring analog inputs that share pins with digital functions.
Estimated: the SSOP-20 has theta_JA around 95 C/W (typical 4-layer JEDEC test board). At 7 mA x 3.3 V = ~23 mW, junction rises only ~2 C above ambient, well below the 150 C junction maximum. At extended temperature (E) grade +125 C ambient, the silicon has ~25 C margin; do not use the I-grade -40 to +85 C variant in enclosed luminaires exceeding 85 C internal.
Place the 20-SSOP over a continuous ground pour on the top layer to provide a thermal sink and short return paths. Use a 4-layer stackup with the second layer as a solid ground plane. Keep crystal traces (if external) under 5 mm, guard-trace the analog pins (RA0/RA1/RC1/RC3) to digital lines, and assign the ICSP pins RB6/RB7 to a programming header that does not share traces with high-current drivers.
Do not enable weak pull-ups on analog-input pins that drive op-amp inverting inputs - the pull-up current biases the analog front end. According to the family datasheet, MCLR (RA3) is input-only and cannot be used as a GPIO output; configuring it as output latches up the part. The LF (low-voltage) variant cannot run from 5 V - if your system has 5 V rails, pick the PIC16F1708 variant instead.
Estimated: at 32 MHz with 8 MIPS, the SPI peripheral tops out at ~8 MHz SCK, well below SSOP-20 trace crosstalk limits if you keep SPI traces short (<25 mm) and ground-bounded. For I2C, enable the SMBus slew-rate control bit per datasheet to limit edge rates to 1 V/ns, which reduces EMI on cable harnesses for industrial sensor wiring. Always enable peripheral pin select (PPS) lock bits after routing to prevent accidental remapping.
Información de cumplimiento
RoHS and lead-free per Microchip packaging materials declaration; AEC-Q100 not qualified (industrial grade 'I' suffix); conflict-mineral reporting compliant per Microchip policy.
