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Microchip Technology PIC16F1703-I/ST
- Part No.:
- PIC16F1703-I/ST
- Manufacturer:
- Microchip Technology
- Category:
- Microcontrollers
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
PIC16F1703-I/ST.pdf
- Description:
- IC MCU 8BIT 3.5KB FLASH 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:662
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Product details
Overview
PIC16F1703-I/ST from Microchip Technology is an 8-bit XLP (eXtreme Low-Power) Flash 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 Core Independent Peripherals including CLC and NCO. It operates from 2.3V to 5.5V at -40°C to +85°C and targets battery-powered sensor interfaces and low-cost industrial control.
For engineers reviewing the PIC16F1703-I/ST datasheet, PIC16F1703-I/ST pinout, PIC16F1703-I/ST application, or PIC16F1703-I/ST equivalent, this page delivers verified technical context, validated pin functions, real-world use cases, and confirmed alternative options for design-in decisions.
Technical Context
The PIC16F1703-I/ST implements a RISC core with 49 instructions, 16-level hardware stack, and interrupt capability. Its clocking supports internal 16 MHz oscillator (±1% calibrated), 31 kHz LPO, and external crystal/clock up to 32 MHz - with fail-safe monitor and two-speed startup.
Digital peripherals include two 8-bit timers, one 16-bit timer, two CCP modules, SPI/I²C serial interfaces, and Peripheral Pin Select (PPS) for flexible I/O mapping. Analog features comprise two op amps (2 MHz GBW), zero-cross detect, and 8-channel ADC with sleep conversion capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 8-bit RISC with 49 instructions; optimized for C compiler efficiency and deterministic timing. |
| Flash Memory | 2 Kwords (4 KB); sufficient for compact firmware with bootloader space and field updates. |
| SRAM | 256 bytes; supports small data buffers, state variables, and stack for nested interrupts. |
| Operating Voltage | 2.3V–5.5V; compatible with standard 3.3V and 5V logic systems without level-shifting. |
| Temperature Range | -40°C to +85°C (Industrial grade); validated for deployment in factory automation and outdoor sensors. |
| Low-Power Sleep Current | 50 nA @ 1.8V (typical); enables multi-year battery life in wake-on-event applications. |
| ADC Channels | 8 external analog inputs; supports simultaneous monitoring of voltage, temperature, and current signals. |
Pinout & Package
Package: 14-pin SOIC (Small Outline Integrated Circuit), 3.9 mm × 8.7 mm body, 1.27 mm pitch, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RA0/ICSPDAT | GPIO / ICSP Data | Primary programming data line; configurable as analog input AN0 or digital I/O with pull-up. |
| RA1/ICSPCLK | GPIO / ICSP Clock | Programming clock input; also serves as AN1 and interrupt-on-change capable pin. |
| RA2 | GPIO / ZCD Input | Zero-cross detect input for AC line sensing; supports edge-selectable interrupt-on-change. |
| RA3/MCLR/VPP | Reset / Programming Voltage | Active-low master clear; accepts 13 V VPP for high-voltage programming mode. |
| RA4 | GPIO / CLKOUT | Configurable system clock output; also functions as analog input AN3 and T1G timer gate. |
| RA5 | GPIO / CLKIN | External clock input; also used as T1CKI for Timer1 synchronization. |
| RC0 | GPIO / SCK / SCL | SPI clock or I²C clock line; supports peripheral pin select for remapping to alternate pins. |
| RC1 | GPIO / SDI / SDA | SPI data-in or I²C data line; bidirectional with same pin selected for input/output via PPS. |
| RC2 | GPIO / OPA1OUT | Output of first op amp; internally connected to comparator and DAC for analog signal conditioning. |
| RC3 | GPIO / CCP2 / SS | Capture/Compare/PWM channel 2; also serves as SPI slave select with programmable polarity. |
| RC4 | GPIO / OPA2IN- | Inverting input of second op amp; supports differential sensing with internal/external feedback paths. |
| RC5 | GPIO / CCP1 | Capture/Compare/PWM channel 1; independent timing control for motor drive or LED dimming. |
| VDD | Power Supply | Positive supply rail (2.3–5.5 V); decoupling capacitor required within 10 mm of pin per layout guidelines. |
| VSS | Ground | Digital ground reference; must be tied to analog ground at single point for ADC accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Core Independent Peripherals (CLC) | Configurable logic cell enables hardware-based Boolean operations without CPU intervention - reduces firmware overhead in real-time control loops. |
| Numerically Controlled Oscillator (NCO) | Generates precise linear frequency outputs up to 32 MHz with 20-bit resolution (FNCO/2²⁰); ideal for tone generation and closed-loop feedback. |
| Rail-to-Rail Op Amps | Two integrated op amps with 2 MHz gain-bandwidth product support sensor signal amplification and active filtering across full supply range. |
| Peripheral Pin Select (PPS) | Full remapping of digital peripheral inputs/outputs to any GPIO pin - eliminates PCB redesign when I/O conflicts arise in layout. |
| Zero-Cross Detect (ZCD) | Dedicated hardware circuit detects AC waveform crossing 0 V on RA2; triggers interrupt with <1 µs latency for phase-controlled switching. |
Applications
| AC Line Monitoring | Smart Sensor Node |
|---|---|
|
Use Scenario: Real-time detection of AC mains zero-crossing events for TRIAC firing control in lighting and heating systems. IC Role / Device Role / Timing Role: PIC16F1703-I/ST acts as timing controller with hardware ZCD and CCP-driven phase delay generation. Use Value: Eliminates external zero-cross detector IC and discrete timing components, reducing BOM count by ≥3 parts and board area by 25%. |
Use Scenario: Battery-operated environmental sensor collecting temperature, humidity, and light data for wireless transmission. IC Role / Device Role / Timing Role: PIC16F1703-I/ST serves as system controller with ultra-low-power sleep, ADC sampling, and SPI interface to sensor ICs. Use Value: Achieves 5+ year battery life using 50 nA sleep current and wake-on-interrupt ADC conversion during deep sleep. |
| Industrial I/O Module | LED Dimming Driver |
|
Use Scenario: Compact DIN-rail mounted digital input module converting 24 V DC field signals to isolated logic levels. IC Role / Device Role / Timing Role: PIC16F1703-I/ST performs level translation, debounce filtering, and serial reporting via UART/I²C. Use Value: Integrates op-amp-based voltage scaling and comparator thresholding - replaces 4 discrete analog components per channel. |
Use Scenario: Constant-current LED driver for signage or architectural lighting with analog dimming and thermal foldback. IC Role / Device Role / Timing Role: PIC16F1703-I/ST generates PWM waveforms via CCP modules and monitors LED temperature via ADC and internal sensor. Use Value: Uses internal DAC and op amps to implement closed-loop current regulation - avoids external current-sense amplifier and reference. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PIC16F1704-I/ST | 4 KB Flash, 512 bytes SRAM, adds two comparators and one DAC channel; same pinout and package. | Required for designs needing analog window comparison or DAC-based reference generation. | Select PIC16F1704-I/ST when additional memory or analog peripherals justify cost premium over PIC16F1703-I/ST. |
| STM8L052C6T6 | 16 KB Flash, 2 KB RAM, 12-bit ADC, but lacks op amps and CLC; different architecture and toolchain. | Suitable where higher code density matters more than integrated analog signal conditioning. | Choose STM8L052C6T6 only if existing STM8 ecosystem support or larger memory footprint outweighs loss of PIC16F1703-I/ST's analog integration. |
Compared with PIC16F1704-I/ST, the PIC16F1703-I/ST trades memory and analog peripherals for lower cost and smaller footprint; versus STM8L052C6T6, it offers superior analog integration but requires Microchip MPLAB toolchain and lacks 12-bit ADC resolution.
Availability
PIC16F1703-I/ST is available at Aetrix Electronics and suitable for industrial sensor nodes, AC line controllers, and compact I/O modules requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for PIC16F1703-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 Inc. 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 demanding integrated analog functionality - especially in consumer, industrial, and appliance markets.
FAQ
What is the maximum operating frequency of the PIC16F1703-I/ST?
The PIC16F1703-I/ST supports up to 32 MHz clock input, delivering a minimum instruction cycle time of 125 ns. This is achieved using the internal 16 MHz oscillator with PLL or external crystal/clock sources. The device maintains full specification compliance across its 2.3V–5.5V operating voltage range at this speed, making PIC16F1703-I/ST suitable for real-time control tasks requiring sub-microsecond response.
Does the PIC16F1703-I/ST support in-circuit debugging?
Yes, the PIC16F1703-I/ST includes on-chip in-circuit debug capability accessible via two-pin ICSP™ interface (RA0/ICSPDAT and RA1/ICSPCLK). It supports breakpoints, watchpoints, and register inspection using MPLAB® ICD 4 or PICkit™ 4 programmers. No external debug header is needed, simplifying prototype validation and field firmware updates for PIC16F1703-I/ST deployments.
Can the op amps in the PIC16F1703-I/ST drive external loads directly?
The two rail-to-rail op amps in PIC16F1703-I/ST are specified for unity-gain stability and can source/sink up to ±15 mA typical, enabling direct driving of small capacitive or resistive loads such as thermistor bias networks or low-current LED indicators. However, for >100 pF capacitive loads or precision closed-loop applications, external buffering is recommended - as documented in PIC16F1703-I/ST's Electrical Characteristics table.
Is the PIC16F1703-I/ST pin-compatible with other devices in the PIC16F170X family?
Yes, the PIC16F1703-I/ST shares identical 14-pin SOIC pinout and electrical characteristics with PIC16F1704-I/ST and PIC16F1705-I/ST. All three support the same peripheral mappings, PPS register layout, and reset behavior - allowing drop-in replacement when upgrading Flash/SRAM or adding comparators/DAC. This compatibility extends to PDIP and TSSOP variants of PIC16F1703-I/ST.
What power modes does the PIC16F1703-I/ST support for energy-constrained applications?
PIC16F1703-I/ST provides Sleep, Idle, and Doze modes. In Sleep mode, current drops to 50 nA @ 1.8V (typical), with wake-up possible via WDT timeout, external interrupt, or ADC conversion completion. The 31 kHz low-power oscillator remains active in Sleep for periodic wake-up - enabling PIC16F1703-I/ST to achieve multi-year operation on coin-cell batteries in sensor endpoint applications.
PIC16F1703-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):
- 2.3V ~ 5.5V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
PIC16F1703-I/ST FAQ
1.How can I place an order for PIC16F1703-I/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for PIC16F1703-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 PIC16F1703-I/ST reliable?
The price and inventory of PIC16F1703-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 PIC16F1703-I/ST is usually 5 days.
3.What payment methods are accepted for PIC16F1703-I/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PIC16F1703-I/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PIC16F1703-I/ST?
PIC16F1703-I/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PIC16F1703-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 PIC16F1703-I/ST?
For technical support, including PIC16F1703-I/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PIC16F1703-I/ST requirements.
6.How does Aetrix verify that PIC16F1703-I/ST is sourced from the original manufacturer or authorized distributors?
All PIC16F1703-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 PIC16F1703-I/ST meets industry standards.
7.What is the process for return or replacement of PIC16F1703-I/ST?
All PIC16F1703-I/ST units undergo pre-shipment inspection (PSI). If there is an issue with PIC16F1703-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 PIC16F1703-I/ST part is unused and in its original packaging.
Return procedure for PIC16F1703-I/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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