PIC16LF1703-I/P - 8-bit 32MHz MCU 3.5KB Flash | Microchip
N.º de pieza: PIC16LF1703-I/P ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $1.62 | $1,62 |
| 10 | $1.49 | $14,90 |
| 100 | $1.36 | $136,00 |
| 500 | $1.22 | $610,00 |
| 1.000 | $1.08 | $1.080,00 |
PIC16LF1703-I/P Descripción general
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile data memory (SRAM), and a rich set of on-chip peripherals (ADC, timers, communication modules, comparators). Within the broader taxonomy, this PIC16 device sits between 8-bit microcontrollers (PIC10/12/16 families) and 32-bit Cortex-M class devices, providing deterministic instruction execution at low power and ultra-low cost. The PIC16F17XX sub-family targets advanced analog front ends combined with Core Independent Peripherals, a differentiator that distinguishes it from earlier PIC16F baselines and from competitor basic 8-bit MCUs.
The PIC16LF1703-I/P's headline features include a 32 MHz maximum internal oscillator, 10-bit resolution ADC up to 35 ksps, two operational amplifiers configurable as comparators or programmable gain amplifiers, Master Synchronous Serial Port (MSSP) supporting I2C and SPI, Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART) with auto-baud detection, and integrated temperature indication diode. The ICSP (In-Circuit Serial Programming) interface allows the device to be programmed directly on the PCB using the MPLAB Snap, PICkit 4, or PICkit 5 debuggers, eliminating socket programming.
Typical applications target the analog signal conditioning and low-power sensing segments: wearable fitness bands, smoke and CO detectors, battery-powered sensor hubs with op-amp signal chains, industrial 4-20 mA loop converters, USB charging-cable ID detection dongles, touch/proximity front ends, and small appliance control boards. The XLP architecture's ~30 nA sleep current keeps MCU quiescent consumption negligible in duty-cycled designs where the rest of the system sleeps for the vast majority of time.
When designing with the PIC16LF1703-I/P, configure the Configuration Words (FOSC, WDTE, PWRTE, MCLRE, BOR, LVP) before any code can execute, and reserve a 5-pin ICSP header on the PCB for in-circuit programming. Always decouple VDD with a 100 nF plus 1 uF ceramic pair, place decoupling within 3 mm of the supply pins, and follow IPC-7351 PDIP footprint rules with thermal relief spokes for hand/repair soldering.
Alternativas directas para PIC16LF1703-I/P — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PIC16LF1703-I/P (mismo factor de forma y huella) — difiere en Package, ADC, Core, DAC, Data EEPROM.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC16F1703-I/P
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PIC16LF1703-E/P
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$0.65 / unidad
Ver hoja de datos →PIC16LF1703-I/P Valores máximos y características eléctricas
| Core Architecture | PIC 8-bit (RISC) |
| Family | PIC16F17XX (XLP) |
| Maximum CPU Speed | 32 MHz |
| Program Memory (Flash) | 3.5 KB (2K x 14 words) |
| Data SRAM | 256 B |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Sleep Current (XLP) | approx. 30 nA (typical, XLP family datasheet) |
| ADC | 10-bit with Computation, up to 35 ksps |
| Operational Amplifiers | 2 (configurable) |
| Digital I/O Pins | 12 (14-pin package) |
| CCP / PWM | 1 CCP module |
| Zero-Cross Detect (ZCD) | Yes |
| PPS (Peripheral Pin Select) | Yes |
| EUSART | 1 with auto-baud detect |
| MSSP (I2C / SPI) | 1 |
| Temperatura de funcionamiento | -40C to +85C (Industrial, I grade) |
| Encapsulado | 14-PDIP (P) |
| Tipo de montaje | Through-Hole |
| ICSP Programming | Yes (PICkit/MPLAB Snap) |
| Estado RoHS | Compliant |
Configuración de pines de PIC16LF1703-I/P
| Pin 1 | VDD — Positive supply voltage (1.8V - 3.6V) |
| Pin 2 | RA5/ICSPCLK — GPIO RA5 / ICSP clock |
| Pin 3 | RA4/ICSPDAT — GPIO RA4 / ICSP data |
| Pin 4 | RA3/MCLR/VPP — GPIO RA3 / Master Clear / Programming voltage |
| Pin 5 | RA2/AN2 — GPIO RA2 / analog input channel 2 |
| Pin 6 | RA1/AN1 — GPIO RA1 / analog input channel 1 |
| Pin 7 | RA0/AN0 — GPIO RA0 / analog input channel 0 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RC0/SOSC — GPIO RC0 / Secondary oscillator |
| Pin 10 | RC1/SCL — GPIO RC1 / I2C clock |
| Pin 11 | RC2 — GPIO RC2 |
| Pin 12 | RC3/SDA — GPIO RC3 / I2C data |
| Pin 13 | RC4 — GPIO RC4 |
| Pin 14 | RC5 — GPIO RC5 |
Aplicaciones típicas
PIC16LF1703-I/P es adecuado para 7 aplicacións: Wearable Fitness Bands, Smoke and CO Detector Front Ends, Battery Sensor Hubs with Op-Amp Signal Chains, Industrial 4-20 mA Loop Converters, USB Charging Cable ID Dongle, Small Appliance Control Boards, Capacitive Touch User Interface.
Wearable Fitness Bands
The PIC16LF1703-I/P's XLP architecture delivers approximately 30 nA sleep current and 1.8 V - 3.6 V operation, fitting coin-cell wearables that spend >99 percent of time in Sleep. The integrated 10-bit ADCC reads accelerometer/heart-rate sensors while 2 op-amps condition bioelectric signals without CPU wakeups. With 3.5 KB Flash, a single device handles step counting, BLE sleep-sync coordination, and piezoelectric haptic drive via the CCP module - all in a 14-PDIP package that simplifies hand-assembly prototypes.
Recomendado
Smoke and CO Detector Front Ends
Smoke detectors need 10-year battery life on a single 3 V cell - exactly the PIC16LF1703-I/P use case. The ZCD peripheral detects AC-line-free mains-free designs without extra circuitry; the on-chip op-amps amplify ionization-chamber currents while the ADCC captures photoelectric sensor voltages. The 10-bit ADC at 35 ksps is fast enough for pulse discrimination between fire and nuisance events, and the 32 MHz CPU runs the SDK's algorithm without busy-waiting.
Recomendado
Battery Sensor Hubs with Op-Amp Signal Chains
Industrial IoT sensor hubs running from a 3.6 V Li-SOCl2 primary cell rely on the PIC16LF1703-I/P's two op-amps to condition 4-20 mA loop, RTD, or thermopile signals in front of the 10-bit ADC. Core Independent Peripherals run the analog chain without waking the CPU, and the EUSART with auto-baud detect handles the RS-485 link at 9600 - 115200 baud. The 1.8 V - 3.6 V supply matches primary cells down to near end-of-life, maximizing deployed sensor lifetime.
Recomendado
Industrial 4-20 mA Loop Converters
Loop-powered 4-20 mA transmitters are powered entirely by 4 mA of loop current, requiring sub-3.6 V supply - the PIC16LF1703-I/P sweet spot. The op-amps implement a precision current loop with shunt sense, while the ADCC samples the loop variable with 10-bit resolution. The EUSART drives HART or proprietary digital communication superimposed on the analog current. Industrial grade -I/P variant sustains -40C to +85C enclosure environments typical for process plants.
Recomendado
USB Charging Cable ID Dongle
USB Type-C cable identification dongles use a small MCU to assert a single resistor value on the CC line. The PIC16LF1703-I/P runs natively from VBUS-derived 3.3 V (well inside the 3.6 V max), reads the voltage divider on the CC pin via the ADCC, and signals the host through no extra I/O - fits in 14-PDIP for overmolded dongle prototypes. Only 256 B SRAM and 3.5 KB Flash are needed; the rest of the program space handles future cable-quirk compatibility updates.
Recomendado
Small Appliance Control Boards
Coffee makers, slow cookers, and induction cooktops integrate the PIC16LF1703-I/P as the user-interface controller driving keypad, buzzer, and BLDC motor pre-driver. The CCP module produces the variable-frequency PWM, while the EUSART links to the main power controller MCU. The ZCD detects AC zero crossings without optocouplers, simplifying galvanically-isolated safety designs; 14-PDIP allows in-line manual insertion during pilot production runs.
Recomendado
Capacitive Touch User Interface
Kitchen appliances and remote controls with capacitive touch buttons pair the PIC16LF1703-I/P with the mTouch peripheral or external charge-time controllers. Although the device itself lacks a dedicated mTouch module, its ADCC and on-chip op-amps suffice for mTouch designs documented in Microchip AN1478. Lowest 30 nA sleep current keeps battery-powered remote controls responsive for years - a sweet spot the LF prefix was designed for.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC16LF1703-I/P — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC16F1703-I/P | PIC16LF1703-E/P | PIC16LF15324-I/P |
|---|---|---|---|---|
| Package | 14-PDIP | 14-PDIP - same | 14-PDIP - same | 14-PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Supply Voltage | 1.8V - 3.6V (LF) | 2.3V - 5.5V | 1.8V - 3.6V (LF) | 1.8V - 3.6V (LF) |
| Program Memory | 3.5 KB Flash | 3.5 KB Flash | 3.5 KB Flash | 7 KB Flash |
| SRAM | 256 B | 256 B | 256 B | 256 B |
| CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| On-chip Op-Amps | 2 | 2 | 2 | 0 (no op-amps) |
| Operating Temperature | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +85C (I grade) |
| ZCD Peripheral | Yes | Yes | Yes | No |
Diferenciadores clave
- Integrated op-amps and ZCD at 14-pin PDIP form factor (frente a PIC16LF15324-I/P)
- Wide voltage family with extended temperature variant available (frente a PIC16F1703-I/P)
- Core Independent Peripherals for <30 nA sleep (frente a PIC16LF1503-I/MV)
Notas de diseño
Estimated: at 32 MHz active, 3.3 V supply, and 50 percent GPIO toggle, average current is approximately 4-6 mA, costing roughly 0.45 microamp-hours per second of CPU activity per the Microchip PIC16F1703 datasheet 40001827B. Insert sleep periods after ADC conversions so the XLP sleep current of 30 nA dominates duty-cycle energy budgets in battery designs.
Place a 100 nF ceramic cap within 3 mm of VDD pin 1 and a 1-10 uF bulk cap also on VDD; tie VSS pin 8 to a solid ground plane. For 14-PDIP footprint use IPC-7351 nominal land diameter 1.6 mm with 0.300 inch row spacing and 2.54 mm pitch; thermal relief spokes for VDD/VSS simplify hand rework, although direct connect to the plane lowers ground bounce in noisy environments.
Always configure the Configuration Words before code can execute - if MCLR is set to MCLR mode (default), pin 4 (RA3/MCLR) needs a 10 kohm pull-up; disabling it gives an extra GPIO but requires correct CONFIG handling. The PIC16LF1703-I/P lacks an internal pull-up on RB3 like classic PICs - use the global weak pull-up enable via the WPU register. Maintain VDD ramp time below BOR threshold or POR may be unreliable.
Estimated: traces longer than 50 mm on the 32 MHz CLKIN or HFINTOSC output should be series-terminated with 30-50 ohm to prevent over/undershoot on adjacent noise-sensitive analog inputs (AN0-AN2). Route analog and digital sections on opposite PCB sides with a single solid VSS plane between them; the on-chip op-amps still need clean AGND tied to VSS at one point.
Información de cumplimiento
The PIC16LF1703-I/P industrial grade is RoHS compliant per Microchip product page; not AEC-Q100 qualified - automotive users should consider PIC16F1703-E/P or other AEC-Q100 -qualified PICS
