PIC16LF1705-I/ML - 8-Bit XLP MCU, 32MHz, 14KB Flash | Microchip
MPN: PIC16LF1705-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.94 | $0.94 |
| 10 | $0.86 | $8.60 |
| 100 | $0.72 | $72.00 |
| 500 | $0.61 | $305.00 |
| 1,000 | $0.54 | $540.00 |
PIC16LF1705-I/ML Overview
What is an 8-bit microcontroller? An 8-bit MCU executes instructions on 8-bit data paths and represents one of the most widely deployed classes of microcontrollers in embedded design. It sits within the broader taxonomy of microcontrollers -> microprocessors -> semiconductors. The PIC16LF1705 specifically belongs to the PIC16F family and combines a RISC Harvard architecture with XLP (eXtreme Low Power) technology, well suited to battery-powered and energy-harvesting designs where standby current is critical.
Key features include a 10-bit ADC with Computation (ADC2) providing automated averaging, filtering and threshold comparison, two on-chip operational amplifiers (op amps), a 5-bit DAC, two comparators, Core Independent Peripherals (CLC, COG, Zero-Cross Detect), Peripheral Pin Select (PPS) for flexible signal routing, and eXtreme Low Power (XLP) modes with sleep current down to nanoamp levels. The device operates from 1.8 V to 3.6 V on the LF (low-voltage) variant.
Internally, the PIC16LF1705 uses a 16-bit instruction word / 8-bit data path Harvard architecture with a 2-stage pipeline, hardware stack, and direct/indirect memory addressing. The integrated op amps, comparators and DAC are tied to the ADC2 pipeline through analog multiplexers, which is what enables many signal-chain tasks (sensor conditioning, threshold detection, waveform generation) to run without CPU intervention - the hallmark of Core Independent Peripherals.
Typical applications include battery-powered sensor nodes, IoT edge devices, low-power remote controls, LED lighting controllers, small appliance user interfaces, and 12 V/24 V industrial sensor conditioning boards where the integrated op amps can directly amplify transducer signals before ADC sampling.
When designing with this part, place a 100 nF decoupling capacitor as close to the VDD pin as possible and use the PPS feature to remap peripherals away from the few QFN pinouts that are inaccessible on a 16-pin package. Always reserve an MCLR pull-up of approximately 10 kohm unless the internal MCLR is enabled.
This page synthesizes distributor pricing, drop-in alternatives and design notes that complement the manufacturer datasheet for engineers sourcing the PIC16LF1705-I/ML on a 16-QFN footprint.
Drop-in alternatives for PIC16LF1705-I/ML — 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 PIC16LF1705-I/ML (same form factor and footprint) — differing in Package, ADC, Core Architecture, DAC, I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1705-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1705-I/P
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.1 / Unit
View Datasheet →PIC16LF1709-I/ML
✅ Drop-In✓ In Stock
$1.21 / Unit
View Datasheet →PIC16F1709-I/ML
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.28 / Unit
View Datasheet →PIC16LF1559-I/ML
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16LF1554-I/ML
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.84 / Unit
View Datasheet →PIC16LF1705-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 Enhanced Mid-Range, 8-bit data path / 16-bit instruction word |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| SRAM | 1024 bytes |
| EEPROM | 256 bytes |
| Max CPU Speed | 32 MHz |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial) |
| ADC | 10-bit ADC2 with Computation (automated averaging/filtering/threshold) |
| On-chip Op Amps | 2 |
| Comparators | 2 |
| DAC | 5-bit DAC |
| Core Independent Peripherals | CLC, COG, Zero-Cross Detect |
| Peripheral Pin Select (PPS) | Yes |
| I/O Pins | 12 (on 16-pin QFN) |
| Package | 16-pin QFN 4x4 mm (ML) |
| Mounting Type | Surface Mount |
| MSL Level | 1 |
| RoHS Status | Compliant |
PIC16LF1705-I/ML Pin Configuration
| Pin 1 | RA5/CLKIN/OSC1 — OSC input / GPIO RA5 |
| Pin 2 | RA4/CLKOUT/OSC2 — OSC output / GPIO RA4 |
| Pin 3 | RA3/MCLR/VPP — Master Clear reset (active low) or programming high voltage |
| Pin 4 | RC5/PPS — GPIO RC5 / PPS-capable |
| Pin 5 | RC4/PPS — GPIO RC4 / PPS-capable |
| Pin 6 | RC3/PPS — GPIO RC3 / PPS-capable |
| Pin 7 | RC2/PPS — GPIO RC2 / PPS-capable |
| Pin 8 | RC1/PPS — GPIO RC1 / PPS-capable |
| Pin 9 | RC0/PPS — GPIO RC0 / PPS-capable |
| Pin 10 | VSS — Ground |
| Pin 11 | VDD — Positive supply (1.8 V to 3.6 V) |
| Pin 12 | RA2/PPS — GPIO RA2 / PPS-capable |
| Pin 13 | RA1/PPS/ICSPCLK — GPIO RA1 / PPS / ICD clock |
| Pin 14 | RA0/PPS/ICSPDAT — GPIO RA0 / PPS / ICD data |
| Pin 15 | RB7/PPS — GPIO RB7 / PPS-capable |
| Pin 16 | RB6/PPS — GPIO RB6 / PPS-capable |
Typical Applications
PIC16LF1705-I/ML is suitable for 6 applications: Battery-Powered Sensor Node, IoT Edge Device / Smart Sensor, LED Lighting Controller, Small Appliance User Interface, Industrial Sensor Conditioning Board, Low-Power Remote Control / HMI.
Battery-Powered Sensor Node
The PIC16LF1705-I/ML is well suited to battery-powered wireless sensor nodes where its nanoamp XLP sleep current and 1.8 V minimum VDD keep the standby drain below typical coin-cell self-discharge. The integrated 10-bit ADC2 with Computation Mode performs automatic averaging and threshold comparison without waking the CPU, which extends battery life by orders of magnitude over polled designs. The two on-chip op amps can be configured as low-side current-sense amplifiers for battery-monitoring, replacing external analog front-ends.
Recommended
IoT Edge Device / Smart Sensor
For IoT edge devices and smart-home sensors, the PIC16LF1705-I/ML combines Core Independent Peripherals (CLC, COG, Zero-Cross Detect) so that signal-conditioning tasks run autonomously without CPU involvement. PPS lets the designer route UART, I2C or SPI to whichever of the 12 exposed I/Os are physically available after PCB layout, freeing tightly-routed QFN boards. The 14 KB Flash supports a fully-featured IoT firmware image including a TLS-style state machine or proprietary RF stack handshake.
Recommended
LED Lighting Controller
The PIC16LF1705-I/ML can drive LED lighting controllers using its COG (Configurable Logic Gate) and Zero-Cross Detect peripherals to perform AC zero-crossing detection and TRIAC dimming without CPU cycles. The 5-bit DAC and on-chip comparators provide smooth analog dimming, while PWM plus the 32 MHz clock ensure flicker-free operation above 200 Hz. PPS allows the PWM outputs to be mapped to any free QFN pin, simplifying routing on a compact lighting PCB.
Recommended
Small Appliance User Interface
In small appliance user interfaces such as coffee machines, blenders or air purifiers, the PIC16LF1705-I/ML's on-chip op amps drive resistive touch or capacitive sensing front-ends, while comparators detect button presses through a low-power wake-up interrupt. CLC peripherals can debounce and route signals in hardware, eliminating CPU overhead. The 16-QFN 4x4 mm footprint fits even the tightest UI panel layouts without sacrificing robustness.
Recommended
Industrial Sensor Conditioning Board
For 12 V/24 V industrial sensor-conditioning boards, the PIC16LF1705-I/ML's two integrated op amps directly amplify thermocouple, RTD or strain-gauge signals before the 10-bit ADC2 samples them. The ADC2 Computation Mode performs oversampling and filtering in hardware, offloading noise-sensitive signal processing from the CPU. The 32 MHz CPU runs PID compensation loops and Modbus framing for sensor hubs. The -40C to +85C industrial temperature grade matches factory-floor environments.
Recommended
Low-Power Remote Control / HMI
The PIC16LF1705-I/ML supports low-power remote-control and HMI designs where its nanoamp sleep current extends coin-cell life to multi-year timescales. The eXLP wake-from-sleep on comparator change allows the MCU to remain dormant until a button is pressed, dramatically reducing average drain. PPS lets the developer route IR, RF or BLE-UART peripherals to whatever QFN pin faces the antenna PCB section, simplifying mechanical-to-electrical layout integration.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1705-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1705-I/ML | PIC16LF1705-I/P | PIC16LF1709-I/ML | PIC16F1709-I/ML | PIC16LF1559-I/ML | PIC16LF1554-I/ML |
|---|---|---|---|---|---|---|---|
| Package | 16-QFN (4x4) (ML) | 16-QFN (4x4) (ML) | 16-QFN (4x4) (ML) | 16-QFN (4x4) (ML) | 16-QFN (4x4) (ML) | 16-QFN (4x4) (ML) | 16-QFN (4x4) (ML) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 14 KB | 14 KB | 14 KB | 32 KB | 32 KB | 8 KB | 4 KB |
| SRAM | 1024 B | 1024 B | 1024 B | 2048 B | 2048 B | 512 B | 256 B |
| Max CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 16 MHz |
| Supply Voltage | 1.8 V to 3.6 V | 2.3 V to 5.5 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 | 1.8 V to 3.6 V |
| On-chip Op Amps | 2 | 2 | 2 | 2 | 2 | 0 | 0 |
| 10-bit ADC2 | Yes (with Computation) | Yes | Yes | Yes | Yes | Yes (basic) | Yes (basic) |
| Peripheral Pin Select (PPS) | Yes | Yes | Yes | Yes | Yes | Yes | Limited |
| Unit Price (qty 1, USD) | 0.94 | 1.02 | 0.96 | 1.18 | 1.24 | 0.78 | 0.74 |
Key Differentiators
- Lower-voltage silicon for single-cell applications (vs PIC16F1705-I/ML)
- Smaller Flash, lower cost (vs PIC16LF1709-I/ML)
- Two on-chip op amps eliminate external analog front-end (vs PIC16LF1559-I/ML)
Design Notes
Place a 100 nF decoupling capacitor as close to the VDD pin (pin 11) of the PIC16LF1705-I/ML as possible, with a 10 uF bulk capacitor at the board's supply entry. Estimated: VDD glitch during ADC burst conversion can reach 50 mV without local decoupling, which degrades ADC2 accuracy by 1-2 LSB. An additional 10 kohm pull-up on MCLR (pin 3) is recommended unless the internal MCLR is enabled in the configuration word.
The 16-QFN package has an exposed thermal pad (EP) on the underside that MUST be soldered to the PCB's ground pad for mechanical reliability and thermal dissipation. Estimated: a properly soldered EP provides roughly 30 C/W theta_JA; an un-soldered EP raises theta_JA by 2-3x and can violate thermal limits at 32 MHz continuous operation. Use a via-array (4-8 thermal vias) under the pad to reduce junction temperature rise.
A common pitfall when migrating firmware between PIC16LF1705 variants is the Peripheral Pin Select (PPS) lock state. PPS is unlocked by a specific sequence of writes to PPSLOCK; failure to perform the unlock before remapping UART/SPI/I2C results in the peripherals defaulting back to fixed pins. Always reset PPS to the device-default mapping at startup and only remap after the unlock sequence is executed. Also note that the LF variant's 32 MHz operation requires VDD above 3.0 V; at 1.8 V the maximum is 16 MHz.
When the PIC16LF1705's on-chip op amps drive the ADC2 directly, keep the analog traces short and routed over a solid ground pour. Estimated: traces longer than 25 mm in noisy digital environments can pick up switching noise from PWM/CWG outputs and corrupt the 10-bit ADC reading by 2-3 LSB. For thermocouple or strain-gauge amplification, use the FVR (Fixed Voltage Reference) with the ADC rather than VDD to maintain gain accuracy across the supply range.
Compliance Information
RoHS and REACH compliant per Microchip product page. The PIC16LF1705 family is not AEC-Q100 qualified; for automotive use, select PIC16F1705-I/ML with extended testing or move to a Q100-graded PIC16 such as PIC16F18155.
