PIC16LF19156-E/MV - 32MHz 8-bit MCU, 28KB Flash, LCD | Microchip
MPN: PIC16LF19156-E/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.31 | $13.10 |
| 100 | $1.18 | $118.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.93 | $930.00 |
| 3,000 | $0.82 | $2,460.00 |
PIC16LF19156-E/MV Overview
An 8-bit PIC microcontroller is a single-chip computer based on a modified Harvard RISC architecture that combines a CPU, non-volatile program memory, RAM, EEPROM, and a rich set of analog and digital peripherals. The 'L' in PIC16LF19156 denotes a wide-voltage, low-power variant suitable for 1.8V-3.6V operation, making it a member of the Microcontroller -> Embedded Controller -> Microprocessor hierarchy of semiconductor devices. Within Microchip's portfolio it sits in the PIC16F191xx family, with the PIC16LF19156 adding the XLP feature set.
Key features include 28KB Flash / 2KB SRAM / 256B EEPROM, an integrated 12-bit ADC2 with computation, a 5-bit DAC, low-power comparators (LP COMP), multiple PWM/CCP/CWG channels, SMT (Signal Measurement Timer), ZCD (Zero-Cross Detection), PPS (Peripheral Pin Select), RTCC (Real-Time Clock Calendar), HLT (Hardware Limit Timer), WWDT (Windowed Watchdog Timer), PMD (Peripheral Module Disable), and an LCD driver with integrated charge pump. The UQFN-28 (4x4 mm) package offers a compact footprint while the exposed pad improves thermal dissipation for higher-clock, peripheral-heavy use cases.
The PIC16LF19156 uses a 14-bit instruction word modified Harvard RISC architecture with a hardware multiplier, hardware interrupt controller, and tightly coupled CIPs that can operate autonomously without CPU intervention. This combination, with the XLP nanoWatt technology, supports idle currents down to the low-nA range, ideal for battery-powered metering, sensor, and IoT nodes that wake only briefly to take a measurement.
Typical applications include battery-powered LCD consumer appliances, IoT sensor nodes with displays, low-power medical monitoring handhelds, smart thermostats, metering and instrumentation, and general-purpose HMI panels. The integrated LCD driver up to a moderate segment count eliminates the need for an external driver IC.
When designing with this MCU, place decoupling capacitors (100 nF plus 1uF bulk) within 2 mm of each VDD pin, and connect the exposed pad to a solid ground plane for thermal relief. Designers should also use MPLAB X IDE with XC8 compiler and the PICkit or Snap programmer for development.
This page synthesizes distributor pricing from Mouser, DigiKey, LCSC and Newark, parametric cross-references to the wider PIC16LF191xx family, and practical design notes not consolidated in any single source, helping engineers evaluate the PIC16LF19156-E/MV against alternatives and source it quickly.
Drop-in alternatives for PIC16LF19156-E/MV — 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 PIC16LF19156-E/MV (same form factor and footprint) — differing in ADC, Package, DAC, Comparators, Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF19156-I/MV
✅ Drop-In✓ In Stock
$0.86 / Unit
View Datasheet →PIC16LF19155-I/MV
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16LF18855-I/MV
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16LF18875-I/MV
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.52 / Unit
View Datasheet →PIC16LF19156-E/MV Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit enhanced mid-range (14-bit instruction) |
| Family | PIC16F191xx (PIC16LF19156) |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| Data SRAM | 2 KB |
| Data EEPROM | 256 B |
| Maximum CPU Speed | 32 MHz |
| Supply Voltage (VDD) | 1.8 V to 3.6 V (LF wide-voltage) |
| Operating Temperature | -40 C to +125 C (E = industrial extended) |
| Package | UQFN-28-EP (4x4 mm), MV suffix, exposed pad |
| Mounting Type | Surface Mount |
| ADC | 12-bit ADC2 with computation |
| DAC | 5-bit DAC |
| Comparators | Low-power comparators (LP COMP) |
| PWM / CCP / CWG | Yes (PWM, CCP, CWG peripherals) |
| SMT (Signal Measurement Timer) | Yes |
| ZCD (Zero-Cross Detect) | Yes |
| PPS (Peripheral Pin Select) | Yes |
| RTCC (Real-Time Clock Calendar) | Yes |
| HLT (Hardware Limit Timer) | Yes |
| WWDT (Windowed WDT) | Yes |
| PMD (Peripheral Module Disable) | Yes |
| LCD Driver | Yes, with integrated charge pump |
| eXtreme Low-Power (XLP) | Yes (nanoWatt/XLP) |
| RoHS Status | Compliant |
PIC16LF19156-E/MV Pin Configuration
| Pin 1 | RA0 — PORTA I/O / analog / LCD segment |
| Pin 2 | RA1 — PORTA I/O / analog / LCD segment |
| Pin 3 | RA2 — PORTA I/O / analog / LCD segment |
| Pin 4 | RA3 — PORTA I/O / analog / LCD segment |
| Pin 5 | RA4 — PORTA I/O / analog / LCD segment |
| Pin 6 | RA5 — PORTA I/O / analog / LCD segment |
| Pin 7 | RA6 — PORTA I/O / OSC2 / LCD segment |
| Pin 8 | RA7 — PORTA I/O / OSC1 / LCD segment |
| Pin 9 | VSS — Ground |
| Pin 10 | RB0 — PORTB I/O / analog / LCD segment |
| Pin 11 | RB1 — PORTB I/O / analog / LCD segment |
| Pin 12 | RB2 — PORTB I/O / analog / LCD segment |
| Pin 13 | RB3 — PORTB I/O / analog / LCD segment |
| Pin 14 | RB4 — PORTB I/O / analog / LCD segment |
| Pin 15 | RB5 — PORTB I/O / analog / LCD segment |
| Pin 16 | RB6 — PORTB I/O / ICSPCLK / LCD segment |
| Pin 17 | RB7 — PORTB I/O / ICSPDAT / LCD segment |
| Pin 18 | AVDD — Analog supply |
| Pin 19 | AVSS — Analog ground |
| Pin 20 | RC0 — PORTC I/O / analog / LCD segment |
| Pin 21 | RC1 — PORTC I/O / analog / LCD segment |
| Pin 22 | RC2 — PORTC I/O / analog / LCD segment |
| Pin 23 | RC3 — PORTC I/O / analog / SCL (PPS) / LCD segment |
| Pin 24 | RC4 — PORTC I/O / analog / SDA (PPS) / LCD segment |
| Pin 25 | RC5 — PORTC I/O / analog / LCD segment |
| Pin 26 | RC6 — PORTC I/O / TX (PPS) / LCD segment |
| Pin 27 | RC7 — PORTC I/O / RX (PPS) / LCD segment |
| Pin 28 | VDD — Digital supply |
| Pin 29 | EP — Exposed pad - connect to ground (VSS) |
Typical Applications
PIC16LF19156-E/MV is suitable for 6 applications: Battery-Powered LCD Consumer Appliance, IoT Sensor Node with Display, Smart Thermostat / HMI Panel, Industrial Metering & Instrumentation, Portable Medical / Health Monitor, Automotive Accessory / Aftermarket Display.
Battery-Powered LCD Consumer Appliance
The PIC16LF19156-E/MV is a strong fit for battery-powered consumer appliances that display information on a segmented LCD, such as kitchen scales, blood-pressure monitors, and remote controls. Its integrated LCD driver with charge pump eliminates the need for an external bias-voltage generator, reducing BOM cost and PCB area. The XLP nanoWatt technology keeps idle current low, while the 12-bit ADC2 reads sensor inputs directly. Realized wake-from-RTCC power consumption is in the low-uA range with the LCD off, supporting multi-year coin-cell operation. Place decoupling within 2mm of VDD, expose the EP pad to ground, and use MPLAB X IDE + XC8 to develop the firmware.
Recommended
IoT Sensor Node with Display
For wireless IoT sensor nodes that include a small status display, the PIC16LF19156-E/MV provides the low-power core while an external radio module (e.g., Sub-GHz or BLE) handles connectivity. The 12-bit ADC2 with computation performs local sensor processing, reducing the data sent over the air and saving radio energy. PPS allows flexible remapping of peripherals, easing PCB routing when the radio occupies UART/SPI pins. Combined with RTCC for scheduled wake-ups and PMD to power down unused peripherals, the MCU's active-mode current and sleep-mode current in the low-nA range make it suitable for years-long battery life.
Recommended
Smart Thermostat / HMI Panel
The PIC16LF19156-E/MV drives segmented-LCD HMI panels in smart thermostats, climate controllers, and home-automation keypads. The integrated charge pump supports biasing for high-contrast LCDs at low VDD, while PWM/CWG channels drive LED backlights or triac-based heater control. The ZCD peripheral simplifies zero-cross-switching of AC loads, reducing switching losses and EMI. CIPS such as SMT and CCP offload timing measurements from the CPU, allowing the 32MHz core to focus on the user interface and on wireless stack management if a co-processor is attached.
Recommended
Industrial Metering & Instrumentation
In industrial metering (electricity, gas, water) the PIC16LF19156-E/MV handles analog front-end conditioning, energy accumulation, and segmented-LCD readout in a single chip. The 12-bit ADC2 is suitable for CT/VT shunt-based metering when paired with appropriate signal conditioning, while the LP comparators implement zero-cross detection for line-frequency measurement. The RTCC provides calendar functions for time-of-use billing, and HLT/WWDT add functional-safety supervision. The MV-grade (-40C to +125C) version tolerates outdoor cabinet temperatures common in utility-meter deployments.
Recommended
Portable Medical / Health Monitor
Portable health devices such as pulse oximeters, glucose meters, and digital thermometers benefit from the PIC16LF19156-E/MV's combination of 12-bit ADC2 for sensor readout, low-power comparators for threshold detection, and segmented-LCD for direct numerical display. The XLP technology supports battery-friendly operation critical for IEC 60601-1-8 compliant alarm indication, and the WWDT adds supervisory robustness required by medical device standards. The compact UQFN-28-EP package fits into slim handheld enclosures.
Recommended
Automotive Accessory / Aftermarket Display
Aftermarket automotive accessories (battery monitors, tyre-pressure displays, garage-door controls) can use the PIC16LF19156-E/MV (E grade -40C to +125C) to drive segmented LCD readouts under hood or dashboard thermal stress. The ZCD simplifies AC-line sensing for powered accessories, while the integrated charge pump maintains LCD contrast under cold-crank voltage dips down to 1.8V. Note: the standard E/MV grade is not AEC-Q100 qualified; for OEM automotive designs use AEC-Q100-qualified PIC16F19156 variants or dsPIC33EP families explicitly listed for automotive.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF19156-E/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF19156-I/MV | PIC16LF19155-I/MV | PIC16LF18855-I/MV | PIC16LF18875-I/MV |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | UQFN-28-EP (4x4 mm) | UQFN-28-EP (4x4 mm) - same | UQFN-28-EP (4x4 mm) - same | UQFN-28-EP (4x4 mm) - same | UQFN-28-EP (4x4 mm) - same |
| Flash | 28 KB | 28 KB | 14 KB | 14 KB | 28 KB |
| SRAM | 2 KB | 2 KB | 1 KB | 1 KB | 2 KB |
| EEPROM | 256 B | 256 B | 0 B (no EEPROM) | 256 B | 256 B |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Temperature Grade | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
| Integrated LCD Driver + Charge Pump | Yes | Yes | Yes | No | No |
| 12-bit ADC2 | Yes | Yes | Yes | 10-bit ADC | 12-bit ADC |
Key Differentiators
- Integrated LCD driver with charge pump - eliminates external LCD bias circuit (vs PIC16LF18855-I/MV)
- Industrial-extended -40C to +125C temperature grade (E suffix) (vs PIC16LF19156-I/MV)
- 256B on-chip EEPROM for non-volatile parameter storage (vs PIC16LF19155-I/MV)
- 28KB Flash and 2KB SRAM - maximum memory in the UQFN-28-EP package (vs PIC16LF19155-I/MV)
Design Notes
PIC16LF19156-E/MV supports 1.8V-3.6V operation. Place a 100nF ceramic decoupling capacitor within 2mm of each VDD/AVDD pin, plus a bulk 1uF-10uF tantalum or ceramic on the rail. Use the PMD registers to power down unused peripherals and rely on the XLP Sleep mode with RTCC active for sub-uA standby current.
Estimated: at 32MHz active from 3.3V, the MCU draws ~6mA, dissipating approximately 20mW - well within UQFN-28-EP thermal limits. The exposed pad (pin 29) MUST be soldered to a continuous ground copper pour of at least 25mm^2 to keep junction temperature within spec at +125C ambient. Without a soldered EP, theta_JA increases significantly.
Route PPS-mapped peripherals (UART, SPI, I2C) to convenient pins before committing to PCB layout. Keep the 32.768kHz crystal traces short and symmetric, and isolate the analog AVSS/AVDD pair from digital switching signals. Use a 4-layer PCB with continuous ground plane for best EMI/EMC performance.
Common pitfalls: (1) Forgetting to solder the EP pad - causes thermal runaway under load. (2) Using the I grade part where the E grade is required for high-temp environments. (3) Exceeding 3.6V on any pin - the LF variant is not 5V tolerant. (4) Failing to configure PPS before using remapped peripherals - peripherals default to fixed pins until PPS unlock sequence runs.
For ADC2 measurements, add a 100nF bypass on AVDD and route analog signals away from PWM and digital switching traces. The 12-bit ADC2 typically achieves 10-11 ENOB with a proper RC anti-aliasing filter at the input. Use the ADC computation mode for hardware-averaged oversampling to further reduce noise.
Compliance Information
RoHS and REACH compliant per Microchip product page. The E/MV grade is industrial-extended temperature (-40C to +125C) but is NOT AEC-Q100 qualified. For automotive designs, use AEC-Q100-qualified PIC16F19156 or PIC16F19176 variants explicitly listed for automotive.
