PIC16LF1705-I/ST - 8-bit 32MHz 14KB Flash XLP MCU | Microchip
Teilenummer: PIC16LF1705-I/ST ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $1.62 | $1,62 |
| 10 | $1.49 | $14,90 |
| 100 | $1.31 | $131,00 |
| 500 | $1.18 | $590,00 |
| 1.000 | $1.05 | $1.050,00 |
PIC16LF1705-I/ST Übersicht
An 8-bit microcontroller (MCU) is a low-power programmable processor built around an 8-bit data path, well suited to cost-sensitive embedded control. PIC16F170x/171x MCUs combine this 8-bit core with on-chip analog and the eXtreme Low Power (XLP) family of sleep and active modes, occupying a tier in the hierarchy: 8-bit MCU → microcontroller → embedded processor → semiconductor. The 'LF' prefix denotes the wide-voltage 1.8V-3.6V supply variant for battery-powered designs.
Key features include 32 MHz max CPU speed from the internal oscillator, 14KB Flash, 1024B SRAM, hardware CLC for combinational/sequential logic without discrete gates, PWM with CCP, and serial interfaces including EUSART, I2C, and SPI. On-chip peripherals such as the 10-bit ADC, op-amp and 8-bit DAC reduce external BOM and PCB area in sensor-interface applications.
The architecture combines a RISC-like Harvard core with vectored interrupts and a 14-bit instruction word, enabling compact code density and deterministic interrupt response. PPS allows flexible routing of digital peripherals to any I/O pin, simplifying PCB layout for mixed-signal designs where analog and digital routing would otherwise conflict.
Typical applications include IoT sensor nodes, battery-powered instrumentation, LED lighting control, consumer appliances, and low-cost motor control where the integrated op-amp and DAC simplify analog front-ends. Designers commonly pair this MCU with discrete power management and low-power wireless transceivers.
When designing with this part, validate current consumption in the chosen sleep mode against battery-life targets: nanoWatt XLP idle currents are well below 1 µA but require correct configuration of the watchdog, brown-out reset and peripheral clocks. PPS remapping must be programmed before peripheral enable to avoid glitches on boot.
This page synthesizes distributor pricing, drop-in package-compatible alternatives from the PIC16F170x family, and practical design notes not found in the manufacturer datasheet.
Drop-in-Alternativen für PIC16LF1705-I/ST – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit PIC16LF1705-I/ST (gleiche Bauform und Footprint) – abweichend in Package, Operating Temperature, Family, ADC, Program Memory (Flash).
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC16F1705-I/ST
✅ Drop-In✓ Auf Lager
$1.18 / Stück
Datenblatt ansehen →PIC16LF1705-I/SL
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$1.07 / Stück
Datenblatt ansehen →PIC16LF1705-I/P
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$1.1 / Stück
Datenblatt ansehen →PIC16LF1705T-I/ST
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$0.98 / Stück
Datenblatt ansehen →PIC16LF1705-E/ST
✅ Drop-In✓ Auf Lager
$0.91 / Stück
Datenblatt ansehen →PIC16LF1705-I/ST Grenzwerte & elektrische Eigenschaften
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Family | PIC16F170x / PIC16LF1705 |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data Memory (SRAM) | 1024 bytes |
| Maximum CPU Speed | 32 MHz |
| Supply Voltage Range | 1.8 V to 3.6 V (LF variant) |
| ADC | 10-bit |
| DAC | 8-bit |
| Operational Amplifier | 1 on-chip |
| Comparators | High-speed comparator |
| Zero-Cross Detect (ZCD) | Yes |
| Configurable Logic Cells (CLC) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| PWM / CCP | Yes |
| Serial Interfaces | EUSART, I2C, SPI |
| Gehäuse | 14-pin TSSOP (ST) |
| Betriebstemperatur | -40 to +85 °C (Industrial) |
| Montageart | Surface Mount |
| MSL-Level | 1 (per JEDEC J-STD-020) |
| RoHS-Status | Compliant |
PIC16LF1705-I/ST Pin-Konfiguration
| Pin 1 | VDD — Positive supply voltage (1.8V-3.6V) |
| Pin 2 | RA5 — I/O port A bit 5 with IOC and ADC |
| Pin 3 | RA4 — I/O port A bit 4 with IOC |
| Pin 4 | RA3/MCLR — I/O / Master Clear (reset, active low) |
| Pin 5 | RC5 — I/O port C bit 5 with PPS |
| Pin 6 | RC4 — I/O port C bit 4 with PPS |
| Pin 7 | RC3 — I/O port C bit 3 with PPS |
| Pin 8 | RC2 — I/O port C bit 2 with PPS |
| Pin 9 | RC1 — I/O port C bit 1 with PPS |
| Pin 10 | RC0 — I/O port C bit 0 with PPS |
| Pin 11 | RA2 — I/O port A bit 2 with op-amp output and DAC |
| Pin 12 | RA1 — I/O port A bit 1 with op-amp inverting input |
| Pin 13 | RA0 — I/O port A bit 0 with op-amp non-inverting input |
| Pin 14 | VSS — Ground reference |
Typische Anwendungen
PIC16LF1705-I/ST ist geeignet für 6 Anwendungs: Battery-Powered IoT Sensor Node, LED Lighting and Dimming Control, Consumer Appliance Control, Low-Cost BLDC Motor Control, Industrial Sensor Transmitter, Wearable Health and Fitness Device.
Battery-Powered IoT Sensor Node
The PIC16LF1705-I/ST fits battery-powered IoT sensor nodes because its 1.8V-3.6V supply aligns with single-cell Li-ion or 2xAA chemistries, while the 10-bit ADC and on-chip op-amp provide direct sensor conditioning without external analog front-ends. With nanoWatt XLP sleep currents below 1 µA and 14KB Flash supporting a complete BLE/Zigbee host stack, this MCU enables multi-year coin-cell lifetimes. Place the part near the sensor with the on-chip op-amp configured as a transimpedance or unity-gain buffer, and use PPS to route the wake-up interrupt to any I/O. Unlike higher-performance Cortex-M0 parts, the PIC16LF1705 adds negligible quiescent draw in sleep and avoids external LDO requirements above 2V rails.
Empfohlen
LED Lighting and Dimming Control
The PIC16LF1705-I/ST suits LED lighting and dimming because its CCP/PWM modules generate dimming signals up to 32 MHz peripheral clock, while the on-chip 8-bit DAC and op-amp deliver analog current control for constant-current drivers. The 14KB Flash stores lookup tables for color-temperature curves and flicker-free dim profiles. Place the MCU upstream of a constant-current LED driver with the PWM output modulating driver enable or reference; the on-chip zero-cross detect (ZCD) enables TRIAC-dimmable mains designs. Unlike discrete 555-timer dimmers, the MCU adds programmable dim curves, status telemetry, and wireless dimmer-knob integration without raising BOM cost.
Empfohlen
Consumer Appliance Control
The PIC16LF1705-I/ST targets consumer appliance control (coffee makers, blenders, small kitchen appliances) because its integrated op-amp, comparator, and zero-cross detect enable direct mains-side sensing without external signal conditioning. The 14KB Flash and 1024B SRAM fit state-machine firmware for sensor-driven cooking profiles and user-interface handling. According to the Microchip datasheet, the on-chip 10-bit ADC reads NTC thermistors and rotary controls, while PWM drives triac gates or MOSFETs. Place the MCU on the low-voltage secondary side with the op-amp buffering a current-sense shunt; the ZCD synchronizes PWM to AC line for low-noise triac firing. Compared to discrete logic, this MCU adds programmability and field-upgradable features.
Empfohlen
Low-Cost BLDC Motor Control
The PIC16LF1705-I/ST fits low-cost BLDC motor control because its high-speed comparator and zero-cross detect enable back-EMF sensing without dedicated motor-control peripherals, while CCP/PWM outputs drive the three-phase inverter at up to 32 MHz. The 1.8V-3.6V supply aligns with 2xAA or single-cell Li-ion fans and small pumps. According to the Microchip datasheet, the 14KB Flash stores sensorless start-up routines and PI controller firmware. Place the MCU on the low-voltage side with the comparator sensing back-EMF through a resistor divider; ZCD synchronizes commutation to rotor position. Compared to dsPIC dedicated motor parts, the PIC16LF1705 keeps BOM cost low at the expense of advanced field-oriented control.
Empfohlen
Industrial Sensor Transmitter
The PIC16LF1705-I/ST is well-suited to industrial 4-20 mA sensor transmitters because its 10-bit ADC and on-chip op-amp directly interface with bridge sensors (load cells, strain gauges) and RTDs without external instrumentation amplifiers. The 1.8V-3.6V supply simplifies loop-powered designs where the MCU shares the 4-20 mA loop with a shunt regulator. According to the Microchip datasheet, the EUSART outputs HART or Modbus frames, and the CLC implements custom logic for sensor diagnostics. Place the op-amp as a gain stage ahead of the ADC, with PPS routing the UART to the loop interface. Compared to discrete op-amp + ADC solutions, this MCU reduces PCB area by ~50% and lowers power consumption in 4-20 mA loops.
Empfohlen
Wearable Health and Fitness Device
The PIC16LF1705-I/ST fits wearable health devices (heart-rate, SpO2, step counters) because its nanoWatt XLP sleep modes drop current below 1 µA while a periodic timer wakes the part to take a measurement, and its 10-bit ADC plus on-chip op-amp reads PPG photodiode signals without a dedicated AFE. The 14KB Flash stores firmware for motion-compensated heart-rate algorithms and BLE command handlers. According to the Microchip datasheet, PPS routes the I2C/SPI peripheral to any GPIO, simplifying PCB routing to the optical sensor. Compared to Cortex-M0+ wearables parts, the PIC16LF1705 consumes less in deep sleep and ships with on-chip op-amp, removing one external IC from the BOM.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC16LF1705-I/ST – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC16F1705-I/ST | PIC16LF1705-I/SL | PIC16LF1705-I/P | PIC16LF1705-E/ST | PIC16LF1705T-I/ST |
|---|---|---|---|---|---|---|
| Package | 14-pin TSSOP (ST) | 14-pin TSSOP (ST) - same | 14-pin SOIC (SL) | 14-pin PDIP (P) | 14-pin TSSOP (ST) - same | 14-pin TSSOP (ST) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Supply Voltage Range | 1.8V - 3.6V | 2.3V - 5.5V | 1.8V - 3.6V | 1.8V - 3.6V | 1.8V - 3.6V | 1.8V - 3.6V |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C (Extended) | -40C to +85C |
| Program Memory (Flash) | 14 KB | 14 KB | 14 KB | 14 KB | 14 KB | 14 KB |
| Data Memory (SRAM) | 1024 B | 1024 B | 1024 B | 1024 B | 1024 B | 1024 B |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| On-chip Analog (ADC/DAC/OpAmp) | 10b ADC + 8b DAC + OpAmp | 10b ADC + 8b DAC + OpAmp | 10b ADC + 8b DAC + OpAmp | 10b ADC + 8b DAC + OpAmp | 10b ADC + 8b DAC + OpAmp | 10b ADC + 8b DAC + OpAmp |
| Unit Price (USD, qty 1) | 1.62 | 1.62 | 1.62 | 1.62 | 1.71 | 1.62 |
Wichtigste Unterscheidungsmerkmale
- Wide-voltage 1.8V-3.6V supply on a 32 MHz 8-bit core with 14KB Flash (vs. PIC16F1705-I/ST)
- On-chip op-amp, 8-bit DAC, and zero-cross detect integrated (vs. PIC16LF1704-I/ST)
- Industrial -40C to +85C operating temperature as standard grade (vs. PIC16LF1705-E/ST)
Designhinweise
Estimated: at 3.3V VDD and 32 MHz active CPU, the PIC16LF1705-I/ST draws approximately 4 mA typical. In Sleep mode with WDT disabled, current drops below 100 nA per the Microchip datasheet. For coin-cell designs targeting multi-year battery life, ensure the MCU spends >99.9% of time in Sleep, wake via IOC or RTCC, and disable unused peripherals via PMD registers. Brown-out reset (BOR) must be enabled to prevent Flash corruption during brown-out events.
Place a 100 nF decoupling capacitor within 5 mm of the VDD pin and a 10 µF bulk capacitor near the IC. According to the Microchip datasheet DS40001725D, the analog supply AVVDD (if separate) requires its own 100 nF decoupling cap tied to AVSS. The ICSP/PGD/PGC pins share general-purpose I/O, so keep programming-header traces short to avoid signal-integrity issues during in-circuit serial programming.
Estimated: configuration words must be set correctly before any code execution, or the part may operate at unexpected oscillator frequency or with watchdog disabled. PPS assignments must be unlocked via PPSLOCK = 0x55, 0xAA sequence before peripheral routing changes; otherwise the peripheral output goes to a default pin. CLC configurations should be reviewed for race conditions when inputs change asynchronously, since combinational logic can generate short glitches on the CLC output.
Compliance-Informationen
RoHS and REACH compliant per Microchip product page; not AEC-Q100 qualified (PIC16F1705-E/ST or higher automotive grade parts required for AEC-Q100).
