PIC16LF1707-I/SO - 8-Bit 32MHz 3.5KB Flash MCU | Microchip
MPN: PIC16LF1707-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.62 | $1.62 |
| 10 | $1.49 | $14.90 |
| 100 | $1.32 | $132.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $1.05 | $1,050.00 |
PIC16LF1707-I/SO Overview
An 8-bit microcontroller is a small computing system-on-chip that integrates a CPU, RAM, Flash program memory, and a range of peripherals onto a single silicon die. Within the broader taxonomy, the PIC16LF1707 belongs to the microcontrollers category, which itself sits under integrated circuits and finally under semiconductors. The 'LF' suffix denotes a wide-voltage, low-power variant typically optimized for battery-powered applications, while the '170x' series brings Microchip's Core Independent Peripherals (CIPs) such as the Configurable Logic Cell (CLC), Zero-Cross Detect (ZCD), and on-chip op-amps into the cost-sensitive 8-bit segment.
Key features include on-chip op-amps, a 10-bit Analog-to-Digital Converter (ADC) with computation, an 8-bit Digital-to-Analog Converter (DAC), a Complementary Waveform Generator (CWG) for half-bridge control, and Peripheral Pin Select (PPS) for flexible signal routing. The XLP nanoWatt technology provides ultra-low sleep currents suitable for energy harvesting and IoT edge nodes. The industrial temperature grade (-40C to +85C) supports a broad set of operating environments.
Architecturally, the PIC16LF1707 uses a modified Harvard RISC core with a 14-bit instruction word, allowing dense code packing relative to byte-oriented 8-bit cores. The combination of CIPs and on-chip analog lets designers replace several discrete components with one MCU, reducing both BOM count and PCB area. The CWG, together with PWM and the 8-bit DAC, supports switched-mode power and LED-driving topologies without an external controller IC.
Typical applications include LED lighting and luminaire control, switched-mode power supply (SMPS) control loops, battery charging, fan/blower speed control, sensor signal conditioning, low-power IoT sensor nodes, and consumer appliance control panels. The wide operating voltage range and rich peripheral set also make it a fit for general-purpose cost-sensitive embedded designs.
When designing with this device, ensure that the MCLR reset line has the proper pull-up and that the VDDCORE capacitor (typically 0.1 uF) is placed as close to the pin as possible. For accurate analog readings, follow Microchip's PCB layout recommendations for the analog VDD/VSS pair and avoid routing digital signals across analog traces.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers evaluate the PIC16LF1707-I/SO for their specific application.
Drop-in alternatives for PIC16LF1707-I/SO — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC16LF1707-I/SO (same form factor and footprint) — differing in Package, ADC, Core Architecture, I/O Pins, DAC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1707-I/SS
✅ Drop-In✓ In Stock
$0.7 / Unit
View Datasheet →PIC16LF1705-I/ST
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16LF1704-I/SL
✅ Drop-In✓ In Stock
$0.92 / Unit
View Datasheet →PIC16LF1507-I/SO
✅ Drop-In✓ In Stock
$0.78 / Unit
View Datasheet →PIC16LF15355-I/SO
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16LF15344T-I/SS
✅ Drop-In✓ In Stock
$0.86 / Unit
View Datasheet →PIC16LF1707-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC RISC (14-bit instruction word) |
| Family | PIC16F170x / PIC16LF1707 |
| Maximum CPU Frequency | 32 MHz |
| Program Memory (Flash) | 3.5 KB (2K x 14) |
| I/O Pins | Up to 18 (20-pin SOIC) |
| Operating Voltage Range | 1.8 V to 3.6 V (LF variant) |
| ADC | 10-bit, multiple channels |
| DAC | 8-bit |
| On-Chip Op-Amps | Yes (2x) |
| Core Independent Peripherals | CLC, ZCD, CWG, NCO, PPS |
| Package | 20-SOIC (SO) 7.50 mm wide |
| Operating Temperature Range | -40C to +85C (Industrial) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| XLP Low-Power | nanoWatt XLP |
PIC16LF1707-I/SO Pin Configuration
| Pin 1 | VDD — Positive supply voltage (1.8V to 3.6V) |
| Pin 2 | RA5 — Bidirectional I/O with analog and interrupt capability |
| Pin 3 | RA4 — Bidirectional I/O |
| Pin 4 | RA3/MCLR — Bidirectional I/O or Master Clear reset input (weak pull-up enabled by config) |
| Pin 5 | RC5 — Bidirectional I/O |
| Pin 6 | RC4 — Bidirectional I/O |
| Pin 7 | RC3 — Bidirectional I/O |
| Pin 8 | RC6 — Bidirectional I/O |
| Pin 9 | RC7 — Bidirectional I/O |
| Pin 10 | RB7 — Bidirectional I/O |
| Pin 11 | RB6 — Bidirectional I/O, ICDCLK |
| Pin 12 | RB5 — Bidirectional I/O, ICDDAT |
| Pin 13 | RB4 — Bidirectional I/O |
| Pin 14 | RC2 — Bidirectional I/O |
| Pin 15 | RC1 — Bidirectional I/O |
| Pin 16 | RC0 — Bidirectional I/O |
| Pin 17 | RA2 — Bidirectional I/O with analog capability |
| Pin 18 | RA1 — Bidirectional I/O with analog capability |
| Pin 19 | RA0 — Bidirectional I/O with analog capability |
| Pin 20 | VSS — Ground reference |
Typical Applications
PIC16LF1707-I/SO is suitable for 6 applications: LED Lighting and Luminaire Control, Battery-Powered IoT Sensor Node, Switched-Mode Power Supply (SMPS) Control, Consumer Appliance Control Panel, Fan and Motor Speed Control, Battery Charging Management.
LED Lighting and Luminaire Control
The PIC16LF1707-I/SO is an excellent fit for LED lighting and luminaire control applications where one MCU must drive constant-current regulation, dimming, and color mixing simultaneously. The integrated 8-bit DAC and Complementary Waveform Generator (CWG) eliminate the need for an external LED-driver IC, while the two on-chip op-amps close the current-sense loop through a low-side shunt resistor. Designers typically pair this MCU with a half-bridge MOSFET stage for high-side dimming; the 1.8-3.6 V LF supply range supports direct Li-ion or 2xAA battery operation. The XLP nanoWatt sleep current keeps standby power below typical ENERGY STAR limits when the luminaire is off. Compared with discrete analog drivers, this approach reduces BOM count by 4-6 components and allows firmware-driven dimming curves.
Recommended
Battery-Powered IoT Sensor Node
The PIC16LF1707-I/SO targets battery-powered IoT sensor nodes where its LF supply range (1.8-3.6 V) and XLP nanoWatt technology deliver multi-year coin-cell lifetimes. The 10-bit ADC with computation handles sensor reads autonomously, waking the CPU only when threshold crossings occur, while the on-chip op-amp buffers high-impedance analog sources without a separate analog front-end IC. Core Independent Peripherals like ZCD enable AC-line-connected sensing without constant CPU polling, freeing the core for radio duty-cycling. The wide industrial temperature range (-40C to +85C) supports outdoor and HVAC-attached deployments. With 3.5 KB flash, the device fits typical BLE-beaconing or LoRa-PHY bring-up firmware including drivers and a small RTOS tick loop.
Recommended
Switched-Mode Power Supply (SMPS) Control
The PIC16LF1707-I/SO is widely used as a primary-side controller in low-power flyback or buck SMPS topologies up to a few watts. The CWG generates complementary gate-drive waveforms for synchronous rectifiers, while the on-chip op-amp serves as the current-sense amplifier in the regulation loop. The 32 MHz CPU bandwidth is sufficient for sub-microsecond control-loop update rates, and the 8-bit DAC provides programmable reference voltage with hardware slope compensation. The wide LF supply allows direct operation from rectified 5V USB or 12V auxiliary rails after a small pre-regulator. Compared with a pure analog UC3842-style controller, this digital approach enables adaptive dead-time, valley switching, and frequency-foldback algorithms that improve light-load efficiency.
Recommended
Consumer Appliance Control Panel
The PIC16LF1707-I/SO suits consumer appliance control panels (coffee machines, washing-machine UI boards, microwave keypads) where 8-18 GPIOs scan capacitive or matrix keypads, drive indicator LEDs, and read sensor inputs simultaneously. PPS allows the designer to remap UART, I2C, SPI, and PWM onto any GPIO, simplifying PCB routing when the panel layout evolves late in the design cycle. The two on-chip op-amps can read a thermistor bridge for temperature feedback without an external analog IC. Industrial temperature rating (-40C to +85C) covers the range of kitchen and laundry environments. Compared with more expensive Cortex-M0+ parts, the PIC16LF1707 keeps BOM cost below $1.50 at qty-1k while delivering adequate performance for slow UI updates.
Recommended
Fan and Motor Speed Control
The PIC16LF1707-I/SO integrates all the analog and timing peripherals needed for small DC fan, blower, or low-voltage BLDC motor control. The CWG generates complementary PWM at up to 32 MHz resolution, while the on-chip op-amp senses motor current through a low-side shunt for closed-loop torque limiting. The ZCD peripheral detects zero-crossing of the back-EMF in sensorless BLDC schemes, removing the need for an external comparator IC. The LF supply range allows direct connection to single-cell Li-ion packs in cordless-drill-style products. Compared with discrete NE555+gate-driver approaches, this MCU solution adds variable speed profiles, fault logging, and over-temperature protection in firmware without extra components.
Recommended
Battery Charging Management
The PIC16LF1707-I/SO is a competent Li-ion / NiMH charger controller for low-current applications (under 1A) where its on-chip 10-bit ADC measures battery voltage and current with adequate resolution. The CWG and PWM channels drive a synchronous buck or linear regulator stage, while the DAC sets the float voltage reference, allowing user-configurable charge profiles. The LF supply range supports direct operation from USB VBUS or a small solar panel, and the XLP sleep current keeps quiescent drain below 100 nA when no charging is active. Compared with dedicated charger ICs like MCP73831, this approach trades simplicity for the ability to implement CC/CV/temperature-aware algorithms in firmware.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1707-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1707-I/SS | PIC16LF1705-I/ST | PIC16LF1704-I/SL | PIC16LF1507-I/SO | PIC16LF15355-I/SO | PIC16LF15344T-I/SS |
|---|---|---|---|---|---|---|---|
| Package | 20-SOIC | 20-SSOP | 20-SSOP | 20-SOIC | 20-SOIC | 20-SOIC | 20-SSOP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 3.5 KB | 3.5 KB | 14 KB | 7 KB | 3.5 KB | 14 KB | 7 KB |
| CPU Architecture | 8-bit PIC | 8-bit PIC | 8-bit PIC | 8-bit PIC | 8-bit PIC | 8-bit PIC | 8-bit PIC |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 20 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| On-Chip Op-Amps | 2 | 2 | 2 | 2 | 0 | 2 | 2 |
| Complementary Waveform Generator | Yes | Yes | Yes | Yes | No | Yes | Yes |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Qty-1 Price (USD, approx.) | $1.62 | $1.62 | $1.85 | $1.50 | $1.20 | $1.85 | $1.55 |
Key Differentiators
- On-chip op-amps and 8-bit DAC integrated for analog signal chains (vs PIC16LF1507-I/SO)
- Core Independent Peripherals (CLC, ZCD, CWG) reduce CPU load (vs PIC16LF15354-I/SO)
- Single-supply LF operation extends battery life (vs PIC16F1707-I/SO)
Design Notes
Decouple VDD with a 100 nF ceramic capacitor placed within 3 mm of the VDD pin (pin 1) and a bulk 1-10 uF tantalum or ceramic capacitor on the same net. The PIC16LF1707 has a separate VDDCORE pin internally regulated; this is internal on most LF packages, but if the pin is exposed follow Microchip's 'Voltage Regulator' section. Avoid routing digital return currents through the analog VSS if the design splits analog and digital ground planes.
For analog accuracy, place the 10-bit ADC reference decoupling capacitor (if a separate VREF+ pin is used) close to the pin with a wide ground return. Keep analog traces short and away from PWM and CWG switching signals. According to Microchip's analog design notes, mismatched ground return paths on the SOIC package can introduce 1-2 LSB of noise on 10-bit conversions - a meaningful error in current-sense measurements.
Do not leave the MCLR pin floating; tie it to VDD through a 10 kohm pull-up resistor (or use the internal weak pull-up enabled by the MCLRE configuration bit). Floating MCLR is the most common cause of unreliable reset behavior on PIC16F170x devices. Likewise, ensure that unused I/O pins are configured as outputs (or inputs with internal pull-ups enabled) to avoid shoot-through and unpredictable current draw during sleep.
Estimated: At maximum clock (32 MHz) and VDD = 3.6 V, the PIC16LF1707-I/SO core dissipation is well under 50 mW, giving a junction temperature rise below 5C in the 20-SOIC package (theta_JA approximately 80 C/W on a 1-oz 2-layer board). No external heatsink is required for any normal use case. This is an estimate using typical digital-IC thermal resistance values, not a datasheet figure - confirm with Microchip's thermal documentation if the application runs near the temperature limit.
When using PPS to remap peripherals, verify that the remapped pin truly supports the chosen peripheral by consulting the PPS input/output mapping tables in the datasheet. Not every peripheral is reachable on every pin, and selecting an unreachable mapping silently disables the function with no error indication. According to Microchip's datasheet, PPS lock bits must be cleared before reconfiguration to prevent runaway firmware from locking the device into an unreachable state.
Compliance Information
RoHS compliant per Microchip product page. Lead-free (Pb-free) reflow profile per JEDEC J-STD-020. Not AEC-Q100 qualified - for automotive applications consider AEC-Q100-qualified PIC16 variants in the same family.
