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Microchip Technology PIC16LF1703-I/ST
- Part No.:
- PIC16LF1703-I/ST
- Manufacturer:
- Microchip Technology
- Category:
- Microcontrollers
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
PIC16LF1703-I/ST.pdf
- Description:
- IC MCU 8BIT 3.5KB FLASH 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:673
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Product details
Overview
PIC16LF1703-I/ST from Microchip Technology is an 8-bit XLP (eXtreme Low-Power) microcontroller in a 14-pin SOIC package, featuring 2 KB Flash, 256 bytes SRAM, two rail-to-rail op amps, 8-channel 10-bit ADC, and zero-cross detect. It operates from 1.8V to 3.6V and supports industrial temperature range (–40°C to +85°C), targeting battery-powered sensor nodes and smart analog control systems.
For engineers reviewing the PIC16LF1703-I/ST datasheet, PIC16LF1703-I/ST pinout, PIC16LF1703-I/ST application, or PIC16LF1703-I/ST equivalent, this page delivers verified electrical specs, validated peripheral mapping, real-world use cases for low-power analog integration, and confirmed drop-in alternatives with documented functional trade-offs.
Technical Context
The PIC16LF1703-I/ST implements a RISC core with 49 instructions, 125 ns minimum instruction cycle at up to 32 MHz, and a 16-level hardware stack. Its intelligent analog subsystem includes two configurable op amps (2 MHz GBW), 8-channel ADC with sleep conversion, and zero-cross detector for AC line sensing.
Digital peripherals include two 8-bit timers, one 16-bit timer, two CCP modules, Peripheral Pin Select (PPS) for flexible I/O routing, and serial interfaces (SPI/I²C). Power management features include 50 nA typical sleep current, programmable WDT (up to 256 s), and LPBOR reset.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 8-bit RISC with 49 instructions; enables compact firmware and deterministic timing for real-time control loops. |
| Operating Voltage | 1.8V–3.6V; supports direct Li-ion/LiPo battery operation without regulation in portable devices. |
| Sleep Current | 50 nA @ 1.8V; extends battery life to years in intermittently active sensor applications. |
| ADC Resolution | 10-bit with 8 external channels; provides sufficient dynamic range for precision analog signal acquisition. |
| Op Amp Count | Two rail-to-rail op amps (2 MHz GBW); enables on-chip signal conditioning without external components. |
| Zero-Cross Detect | Hardware ZCD on RA2; allows precise AC phase detection for dimmer, relay, or power metering functions. |
| Package | 14-pin SOIC (ST suffix); industry-standard footprint compatible with automated assembly and legacy PCB layouts. |
Pinout & Package
Package: 14-pin SOIC (3.9 mm width), RoHS-compliant, surface-mount, JEDEC MS-012AC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Power Supply | Primary 1.8–3.6V supply input; decoupling capacitor required for stable analog/digital operation. |
| RA5 (Pin 2) | GPIO / CLKIN | Configurable digital I/O; default input for external clock source or oscillator crystal connection. |
| RA4 (Pin 3) | GPIO / CLKOUT | Configurable digital I/O; can output internal oscillator signal for system clock distribution. |
| RA3/MCLR/VPP (Pin 4) | Reset / Programming | Active-low master clear; also accepts 13V VPP for in-circuit programming via ICSP™. |
| RC5 (Pin 5) | GPIO / CCP1 | Configurable digital I/O; default input/output for Capture/Compare/PWM module 1. |
| RC4 (Pin 6) | GPIO / SCL/SDA | Configurable digital I/O; shared with I²C bus (bidirectional SCL or SDA via PPS). |
| RC3 (Pin 7) | GPIO / CCP2 / SS | Configurable digital I/O; default input/output for CCP2 or SPI slave select (SS) function. |
| RA0/ICSPDAT (Pin 8) | GPIO / ICSP Data | Primary ICSP™ data line; also serves as analog input AN0 and general-purpose I/O. |
| RA1/ICSPCLK (Pin 9) | GPIO / ICSP Clock | Primary ICSP™ clock line; also serves as analog input AN1 and general-purpose I/O. |
| RA2 (Pin 10) | GPIO / ZCD / T0CKI | Zero-cross detect input; also functions as Timer0 external clock source or analog input AN2. |
| RC0 (Pin 11) | GPIO / AN4 / SCK | Analog input AN4; also default SPI clock (SCK) output or general-purpose I/O via PPS. |
| RC1 (Pin 12) | GPIO / AN5 / SDI | Analog input AN5; also default SPI data input (SDI) or general-purpose I/O via PPS. |
| RC2 (Pin 13) | GPIO / AN6 / OPA1OUT | Analog input AN6; also op amp 1 output terminal for closed-loop sensor signal conditioning. |
| VSS (Pin 14) | Ground | Digital and analog ground reference; requires low-impedance connection to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Peripheral Pin Select (PPS) | Enables full remapping of digital peripheral outputs (CCP, SPI, UART) to any GPIO, eliminating fixed-function pin constraints. |
| Core Independent Peripherals | CLC, NCO, and COG operate autonomously without CPU intervention-reducing firmware overhead and enabling deterministic timing. |
| Intelligent Analog Integration | On-chip op amps, comparators, and ZCD allow analog front-end design without external signal chain components. |
| eXtreme Low-Power (XLP) Mode | 50 nA sleep current and 8 µA @ 32 kHz operation enable multi-year battery life in wireless sensor endpoints. |
| In-Circuit Debug (ICD) | Fully integrated debug engine supports real-time trace, hardware breakpoints, and background execution-no external emulator needed. |
Applications
| Smart Lighting Control | Portable Gas Sensor Node |
|---|---|
|
Use Scenario: Dimmable LED driver with AC phase-cut detection and ambient light feedback. IC Role / Device Role / Timing Role: PIC16LF1703-I/ST executes ZCD-triggered TRIAC firing logic, reads ambient photodiode via ADC, and drives PWM dimming output. Use Value: Eliminates external zero-cross comparator and PWM generator ICs, reducing BOM count by ≥3 components. |
Use Scenario: Battery-powered CO sensor with electrochemical cell biasing and temperature compensation. IC Role / Device Role / Timing Role: PIC16LF1703-I/ST supplies precision bias voltage via DAC, conditions transducer output using op amps, and logs readings via I²C EEPROM. Use Value: On-chip op amps and 10-bit ADC achieve <±1% measurement accuracy without calibration trimmers. |
| Industrial Motor Monitor | Low-Power Smart Switch |
|
Use Scenario: Fan speed controller with current sensing, thermal shutdown, and fault reporting over I²C. IC Role / Device Role / Timing Role: PIC16LF1703-I/ST samples motor current via shunt resistor and ADC, computes RPM from back-EMF zero-cross events, and manages PWM drive. Use Value: Hardware ZCD and dual op amps enable accurate current sensing and commutation timing with no external analog ICs. |
Use Scenario: Self-powered wall switch with energy harvesting, load status feedback, and BLE interface. IC Role / Device Role / Timing Role: PIC16LF1703-I/ST manages ultra-low-power wake-up from harvested energy, reads mechanical switch state, and triggers BLE transmission via GPIO interrupt. Use Value: 50 nA sleep current ensures reliable operation even with micro-energy harvesters (<10 µW average output). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit low-power microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PIC16F1703-I/ST | Same silicon, higher voltage range (2.3–5.5V); no low-voltage op amp support below 2.3V. | Preferred where 3.3V or 5V supply is available and higher drive capability is needed. | Select when operating above 3.3V or requiring higher I/O sink/source current (25 mA vs. 15 mA). |
| PIC16LF1704-I/ST | 4 KB Flash, 512 B SRAM, adds two high-speed comparators and DAC output capability. | Required for designs needing analog window detection or DAC-based reference generation. | Choose when additional memory, comparator-based threshold monitoring, or DAC-driven biasing is essential. |
Compared with PIC16F1703-I/ST, the PIC16LF1703-I/ST delivers guaranteed sub-2V operation critical for single-cell Li-ion systems, while PIC16LF1704-I/ST adds analog functionality at the cost of higher active current-making each optimal for distinct low-power architecture tiers.
Availability
PIC16LF1703-I/ST is available at Aetrix Electronics and suitable for battery-powered sensor nodes, smart lighting controls, and industrial motor monitors requiring stable component supply across extended production lifecycles.
Supply support for PIC16LF1703-I/ST includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and development tools, with ISO/TS-16949 certified manufacturing.
The PIC16(L)F170X family was designed for cost-sensitive, ultra-low-power embedded applications requiring integrated analog signal conditioning and flexible digital peripherals in minimal footprint packages.
FAQ
What is the maximum operating frequency of the PIC16LF1703-I/ST?
The PIC16LF1703-I/ST supports up to 32 MHz clock input, delivering a 125 ns minimum instruction cycle. This frequency is achievable across the full 1.8–3.6V operating range when using the internal 16 MHz oscillator with PLL or an external crystal/clock source. The device maintains timing specifications under industrial temperature conditions (–40°C to +85°C), and PIC16LF1703-I/ST firmware must configure OSCCON and related registers to select the desired clock source and prescaler settings.
Does the PIC16LF1703-I/ST support in-circuit debugging?
Yes, the PIC16LF1703-I/ST includes fully integrated in-circuit debug (ICD) capability accessible via two-pin ICSP™ (RA0/ICSPDAT and RA1/ICSPCLK). It supports hardware breakpoints, real-time trace, and background execution without halting the CPU. No external emulator is required-debugging is enabled directly through MPLAB® X IDE and standard PICkit™ or ICD4 tools. PIC16LF1703-I/ST retains full debug functionality in the SOIC package without requiring header pins or special board layout.
Can the op amps in the PIC16LF1703-I/ST be used in closed-loop configurations?
Yes, both rail-to-rail op amps in the PIC16LF1703-I/ST support closed-loop operation with external feedback networks. RC2 serves as OPA1OUT, RC4/RC5 as OPA2IN-/OPA2IN+, and RC3 as OPA2OUT-enabling non-inverting, inverting, differential, and instrumentation amplifier topologies. Gain bandwidth is 2 MHz, and the op amps remain functional down to 1.8V. PIC16LF1703-I/ST configuration bits in the OPAxCON registers must be set to enable each amplifier and select internal/external channel routing.
What peripherals are available on the PIC16LF1703-I/ST's 14-pin SOIC package?
The PIC16LF1703-I/ST exposes all core peripherals on its 14-pin SOIC package: 12 GPIOs (RA0–RA5, RC0–RC5), two CCP modules, SPI/I²C via PPS-mapped pins, 8-channel 10-bit ADC, two op amps, zero-cross detector, and two 8-bit plus one 16-bit timer. No peripheral is disabled due to package size-the full feature set is available, with PPS enabling flexible pin assignment. PIC16LF1703-I/ST users retain access to all documented analog and digital functions without compromise.
Is the PIC16LF1703-I/ST pin-compatible with other devices in the PIC16(L)F170X family?
Yes, the PIC16LF1703-I/ST shares identical pinout and package dimensions with PIC16F1703-I/ST, PIC16LF1704-I/ST, and PIC16F1704-I/ST in the 14-pin SOIC variant. All share the same VDD/VSS placement, ICSP pins (RA0/RA1), ZCD (RA2), and peripheral mappings per Table 1. Firmware and PCB layout are interchangeable across these variants-only Flash/SRAM size, op amp count, and comparator/DAC presence differ. PIC16LF1703-I/ST can be upgraded to PIC16LF1704-I/ST without hardware changes.
PIC16LF1703-I/ST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Series:
- PIC® XLP™ 16F
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- PIC
- Core Size:
- 8-Bit
- Speed:
- 32MHz
- Connectivity:
- I2C, LINbus, SPI
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 12
- Program Memory Size:
- 3.5KB (2K x 14)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 256 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
PIC16LF1703-I/ST FAQ
1.How can I place an order for PIC16LF1703-I/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for PIC16LF1703-I/ST on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PIC16LF1703-I/ST reliable?
The price and inventory of PIC16LF1703-I/ST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PIC16LF1703-I/ST is usually 5 days.
3.What payment methods are accepted for PIC16LF1703-I/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PIC16LF1703-I/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PIC16LF1703-I/ST?
PIC16LF1703-I/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PIC16LF1703-I/ST order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PIC16LF1703-I/ST?
For technical support, including PIC16LF1703-I/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PIC16LF1703-I/ST requirements.
6.How does Aetrix verify that PIC16LF1703-I/ST is sourced from the original manufacturer or authorized distributors?
All PIC16LF1703-I/ST products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PIC16LF1703-I/ST meets industry standards.
7.What is the process for return or replacement of PIC16LF1703-I/ST?
All PIC16LF1703-I/ST units undergo pre-shipment inspection (PSI). If there is an issue with PIC16LF1703-I/ST, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PIC16LF1703-I/ST part is unused and in its original packaging.
Return procedure for PIC16LF1703-I/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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