PIC16F19156-I/SS - 28KB Flash XLP LCD MCU 32MHz | Microchip
N.º de pieza: PIC16F19156-I/SS ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.21 | $2,21 |
| 10 | $2.05 | $20,50 |
| 100 | $1.78 | $178,00 |
| 500 | $1.62 | $810,00 |
| 1.000 | $1.45 | $1.450,00 |
PIC16F19156-I/SS Descripción general
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, optimised for deterministic real-time control with low power and low cost. The PIC16F19156 sits in the hierarchy 8-bit MCU -> microcontroller -> embedded processor -> semiconductor, and is targeted by Microchip's MPLAB X IDE + XC8 toolchain. The 'XLP' (eXtreme Low Power) family extends battery life with sub-uA sleep currents and a charge-pump-augmented LCD driver.
Key differentiating features include: integrated LCD driver with charge pump, 12-bit ADC2 with computation, 5-/8-bit DAC, two rail-to-rail comparators with programmable hysteresis, four Configurable Logic Cells (CLC), four 16-bit PWM, three Capture/Compare/PWM (CCP), Complementary Waveform Generator (CWG), Signal Measurement Timer (SMT), Zero-Cross Detect (ZCD), Peripheral Pin Select (PPS) and a Real-Time Clock/Calendar (RTCC). Up to 43 high-current sink/source I/O support LED drive directly.
The PIC16F19156 uses a 14-bit instruction word Harvard architecture with a hardware stack and 32 interrupt sources. Core-independent peripherals (CLC, CWG, PWM, SMT, ZCD) operate without CPU wake-up, dramatically reducing average power in event-driven designs and freeing the CPU for application logic.
Typical applications include battery-powered LCD keypads, IoT sensor nodes with display, low-cost utility meters, smart thermostats, white-goods user-interface boards, and handheld medical/wellness devices. The on-chip charge pump drives contrast even at low battery, and the 12-bit ADC2 with computation offloads averaging, filtering, and threshold checks in sensor-conditioning firmware.
When designing with this device, keep VDD between 2.3 V and 5.5 V (F-version) and pay attention to PPS remap conflicts: each peripheral function can be routed to only one pin at a time, so a wrong configuration silently breaks the schematic intent. Verify PPS lock bits before final code lock.
This page synthesises current distributor pricing, parametric comparison, and pin-compatible PIC16 same-package drop-in alternatives, providing context not found in the bare datasheet.
Alternativas directas para PIC16F19156-I/SS — 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 PIC16F19156-I/SS (mismo factor de forma y huella) — difiere en Package, ADC, Comparators, LCD Driver, Core Architecture.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC16F19155-I/SS
✅ Sustitución directa✓ En stock
$1.08 / unidad
Ver hoja de datos →PIC16F19156-E/SS
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC16F19155T-I/SS
✅ Sustitución directa✓ En stock
$1.21 / unidad
Ver hoja de datos →PIC16F19155-E/SS
✅ Sustitución directa✓ En stock
$1.18 / unidad
Ver hoja de datos →PIC16F18855-I/SSVAO
✅ Sustitución directa✓ En stock
$2.08 / unidad
Ver hoja de datos →PIC16F19156-I/SS Valores máximos y características eléctricas
| Core Architecture | PIC16, 8-bit RISC, 14-bit instruction word |
| Maximum CPU Frequency | 32 MHz |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| Data SRAM | 2 KB |
| Data EEPROM | 256 B |
| Recuento de pines | 28 |
| Encapsulado | 28-SSOP (0.209", 5.30 mm width) |
| Tipo de montaje | Surface Mount (Gull Wing) |
| Temperature Range | -40C to +85C (Industrial) |
| Comparators | 2 x rail-to-rail with programmable hysteresis |
| PWM Modules | 4 x 16-bit PWM |
| CCP Modules | 3 x Capture/Compare/PWM |
| CLC | 4 Configurable Logic Cells |
| CWG | 1 Complementary Waveform Generator |
| LCD Driver | Integrated with charge pump |
| High-Current I/O | Up to 43 high-current sink/source |
| Peripheral Pin Select | Yes (PPS) |
| RTCC | Yes (Real-Time Clock/Calendar) |
| ZCD | Zero-Cross Detect |
| SMT | Signal Measurement Timer |
| Estado RoHS | Compliant (per distributor listing) |
Configuración de pines de PIC16F19156-I/SS
| Pin 1 | RA5 — Bidirectional I/O / ICSPCLK / DAC ref |
| Pin 2 | RA4 — Bidirectional I/O / T0CKI / LCD segment |
| Pin 3 | RA3 — Bidirectional I/O / MCLR (input only on this device) |
| Pin 4 | RA2 — Bidirectional I/O / DAC output / LCD segment |
| Pin 5 | RA1 — Analog input / comparator / DAC ref |
| Pin 6 | RA0 — Analog input / DAC output / ICD |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RA7 — Bidirectional I/O / DAC ref / LCD SEG |
| Pin 9 | RA6 — Bidirectional I/O / LCD segment |
| Pin 10 | RC0 — Bidirectional I/O / SOSCO / LCD SEG |
| Pin 11 | RC1 — Bidirectional I/O / SOSCI / LCD SEG |
| Pin 12 | RC2 — Bidirectional I/O / LCD SEG |
| Pin 13 | RC3 — Bidirectional I/O / SCL / LCD SEG |
| Pin 14 | RC4 — Bidirectional I/O / SDA / LCD SEG |
| Pin 15 | RC5 — Bidirectional I/O / LCD SEG |
| Pin 16 | RC6 — Bidirectional I/O / TX / LCD SEG |
| Pin 17 | RC7 — Bidirectional I/O / RX / LCD SEG |
| Pin 18 | RB7 — Bidirectional I/O / LCD SEG |
| Pin 19 | RB6 — Bidirectional I/O / ICD PGC / LCD SEG |
| Pin 20 | RB5 — Bidirectional I/O / ICD PGD / LCD SEG |
| Pin 21 | RB4 — Bidirectional I/O / LCD SEG |
| Pin 22 | RB3 — Bidirectional I/O / LCD SEG |
| Pin 23 | RB2 — Bidirectional I/O / LCD SEG |
| Pin 24 | RB1 — Bidirectional I/O / LCD SEG |
| Pin 25 | RB0 — Bidirectional I/O / INT / LCD SEG |
| Pin 26 | VDD — Positive supply voltage |
| Pin 27 | VSS — Ground reference |
| Pin 28 | LCDBIAS — LCD bias voltage input (charge pump bypass) / LCD SEG |
Aplicaciones típicas
PIC16F19156-I/SS es adecuado para 6 aplicacións: Battery-Powered LCD Keypad / Thermostat, IoT Sensor Node with Local Display, Low-Cost Utility Meter / Sub-Meter, White Goods / Appliance User Interface, Handheld Medical / Wellness Device, Industrial Sensor / Process Transmitter.
Battery-Powered LCD Keypad / Thermostat
The PIC16F19156-I/SS fits battery-powered LCD thermostats because the on-chip charge pump keeps the glass contrast down to battery cut-off voltage, while the XLP core drops average consumption into the sub-uA range. Its 12-bit ADC2 reads thermistor bridges directly, and core-independent peripherals (CLC, SMT) wake the CPU only on a button press or a setpoint change. The 28-SSOP footprint keeps the PCB narrow enough to fit behind a 4-digit custom LCD. Estimated coin-cell life of 5-10 years is achievable when RTCC handles the timekeeping in deep sleep.
Recomendado
IoT Sensor Node with Local Display
The PIC16F19156-I/SS is well-suited to IoT sensor nodes that display temperature, humidity or process values locally without needing a wireless radio. CWG drives a buzzer for alarms without CPU load, RTCC timestamps samples during sleep, and PPS lets the designer reassign I/O as the schematic evolves. The 2 KB SRAM buffers 50+ 12-bit samples for batched reporting. Pair it with an external sub-GHz or LoRa module on UART for low-rate telemetry, with the PIC handling housekeeping in deep sleep between transmissions.
Recomendado
Low-Cost Utility Meter / Sub-Meter
Utility submeters benefit from the PIC16F19156-I/SS because its 256-byte EEPROM stores tamper flags and calibration constants for the lifetime of the product, while the 12-bit ADC2 with computation offloads RMS and pulse-counting math from the CPU. The integrated LCD shows cumulative kWh without an external driver, slashing BOM cost. Industrial temperature rating (-40C to +85C) handles basement and outdoor enclosures. The high-current I/O pins drive the metrology LED and relay outputs directly without external transistors.
Recomendado
White Goods / Appliance User Interface
In washing-machine or dishwasher control boards the PIC16F19156-I/SS drives an icon-segment LCD for cycle selection while 4 PWM channels control motor or valve actuators. The 5/8-bit DACs provide analog reference voltages to sensor bridges, and PPS reassigns peripheral pins when the housing layout changes between SKUs. CLC replaces discrete glue logic for safety interlocks, shrinking the BOM and improving reliability in a high-humidity environment. Industrial temperature rating covers appliance operating conditions without derating.
Recomendado
Handheld Medical / Wellness Device
Battery-powered glucose meters, pulse-oximeter probes and handheld TENS units can use the PIC16F19156-I/SS because the rail-to-rail comparators interface directly to optical sensor photodiodes, while the 12-bit ADC2 measures battery voltage and thermistor compensation. Core-independent peripherals minimise wake events, extending battery life on AAA cells. The 28-SSOP is small enough for a slim enclosure, and 43 high-current I/O drive LED indicators and buzzer alerts without external drivers. RoHS compliance simplifies regulatory documentation.
Recomendado
Industrial Sensor / Process Transmitter
The PIC16F19156-I/SS suits 4-20 mA loop-powered process transmitters thanks to its wide operating voltage and low sleep current, which lets it survive on the residual loop current during idle periods. CLC and SMT modules implement frequency-to-voltage and pulse-width conditioning in hardware, freeing the CPU for HART or IO-Link framing. The integrated LCD provides local readout without an external display driver, and PPS allows the same firmware to be reused across 2-wire, 3-wire and 4-wire transmitter SKUs.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC16F19156-I/SS — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC16F19155-I/SS | PIC16F19156-E/SS | PIC16F19155T-I/SS | PIC16F19155-E/SS | PIC16F18855-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP (same) | 28-SSOP (same) | 28-SSOP (same) | 28-SSOP (same) | 28-SSOP (same) |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| LCD Driver | Yes (with charge pump) | Yes (with charge pump) | Yes (with charge pump) | Yes (with charge pump) | Yes (with charge pump) | Yes (older generation, no charge pump on all pins) |
| Core-Independent Peripherals (CLC/CWG/SMT/ZCD) | Yes (all present) | Yes (all present) | Yes (all present) | Yes (all present) | Yes (all present) | Partial (older generation) |
| Temperature Range | -40C to +85C (Industrial) | -40C to +85C | -40C to +125C (Extended) | -40C to +85C | -40C to +125C (Extended) | -40C to +85C |
Diferenciadores clave
- On-chip LCD charge pump (frente a PIC16F18855-I/SS)
- Larger Flash headroom within 28-SSOP family (frente a PIC16F19155-I/SS)
- Extended-temperature drop-in variant (frente a PIC16F19156-E/SS)
Notas de diseño
Estimated: When running at 32 MHz from 3.3 V the PIC16F19156 core typically draws ~5 mA active. In Sleep with RTCC the data sheet targets <1 uA. Use MPLAB X's power estimator with your actual peripheral enable bits, because enabling ADC2, comparators, or the LCD charge pump each add measurable current. Place a 100 nF decoupling cap within 3 mm of VDD pin 26 and a 10 uF bulk cap on the VDD rail to handle LCD charge-pump switching transients.
Route the LCD segment traces as short and balanced as possible to prevent uneven contrast. The charge-pump capacitors on LCDBIAS (pin 28) should be 1 nF low-leakage ceramics placed as close as possible. If using the high-current I/O for LED drive, star-route ground returns to the VSS pin 27 to avoid ground bounce corrupting ADC2 measurements. For SSOP packages, ensure solder paste stencil apertures are 0.4 mm wide with 0.15 mm web spacing for reliable reflow.
Do not assume peripheral-to-pin mapping is fixed on this device - PPS lets you remap most peripherals, but a misconfigured PPS lock can silently break the firmware's intent. Always read back the PPS register values in your init code. Also, do not enable the LCD charge pump at VDD below 2.5 V or segment contrast will drop on cold starts. The MCLR/RA3 pin on this 28-SSOP variant is input-only, so you cannot drive it as a digital output - check the pin-description table before assigning it to a peripheral.
Estimated: When driving PWM outputs above 100 kHz from the 16-bit PWM modules, add a small series resistor (22-47 ohm) close to the pin if the trace length exceeds 25 mm, to dampen reflections into the high-current driver. CLC-generated waveforms inherit the same slew-rate control as their source peripherals, so route CLC outputs with the same care as direct PWM outputs. Keep analog inputs (RA0/RA1) away from PWM traces to avoid 12-bit ADC2 crosstalk.
Información de cumplimiento
RoHS and lead-free status confirmed by DigiKey/Mouser distributor listings. Industrial temperature grade - not AEC-Q100 qualified - choose E-grade variants for harsh environments. Halogen-free status not explicitly listed in the distributor data; refer to Microchip's environmental compliance page for confirmation.
