PIC16LF19155-I/MV - 8-bit XLP MCU, 32MHz, 14KB Flash | Microchip
MPN: PIC16LF19155-I/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.67 | $16.70 |
| 100 | $1.49 | $149.00 |
| 500 | $1.32 | $660.00 |
| 1,000 | $1.18 | $1,180.00 |
| 3,000 | $1.05 | $3,150.00 |
PIC16LF19155-I/MV Overview
An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit data path, typically built on a Harvard architecture with separate program and data buses. MCUs belong to the broader embedded controller hierarchy: microcontroller -> embedded processor -> semiconductor IC. The PIC16 family adds RISC-style instruction execution, deterministic interrupts, and Core Independent Peripherals (CIPs) that offload tasks like waveform generation, signal conditioning, and LCD driving from the CPU. The 'LF' prefix in PIC16LF19155-I/MV indicates the low-voltage/low-power 'F' process node, while the 'I/MV' suffix indicates the industrial temperature grade (-40C to +85C) and the UQFN-28 package.
Key features include 24 GPIO pins, a 12-bit ADC with up to 20 channels, two comparators, two PWM modules, a 5-bit DAC, six timers, and an integrated LCD driver supporting up to 96 segments. The XLP technology provides sleep currents below 1 uA with RTC retention, enabling multi-year coin-cell operation for battery-powered devices.
Architecturally, the PIC16LF19155 uses a RISC core with 49 instructions and a 14-bit instruction word, allowing 8K-word program density in a small footprint. Hardware CIPs (CLC, NCO, DSM, PWM) execute signal-processing functions without CPU intervention, reducing active-mode time and overall power consumption. The integrated LCD charge pump eliminates the need for external boost circuitry on glass displays biased up to 5V.
Typical applications include battery-powered IoT sensor nodes with LCD readouts, medical metering devices, thermostat controls, wearable fitness trackers, electronic shelf labels, and industrial HMI panels. The combination of CIPs and low-power modes makes the part especially attractive for always-on human-machine interfaces that must wake, measure, display, and return to sleep within tight energy budgets.
When designing with this device, budget decoupling capacitance of at least 100 nF near each power pin and route the analog AVdd/AVss pair separately from digital Vdd/Vss to keep ADC noise below 1 LSB. The PIC16LF19155-I/MV is pin-compatible with other PIC16F191xx family members in UQFN-28, enabling code reuse and second-source flexibility on the same PCB land pattern.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, enabling engineers to select, source, and qualify the PIC16LF19155-I/MV in days rather than weeks.
Drop-in alternatives for PIC16LF19155-I/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 PIC16LF19155-I/MV (same form factor and footprint) — differing in Comparators, LCD Driver, Operating Temperature, Package, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F19155-I/MV
✅ Drop-In✓ In Stock
$1.07 / Unit
View Datasheet →PIC16LF19156-I/MV
✅ Drop-In✓ In Stock
$0.86 / Unit
View Datasheet →PIC16LF19175-I/MV
✅ Drop-In✓ In Stock
$1.82 / Unit
View Datasheet →PIC16LF19155-I/SP
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF19155-E/MV
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF19155-I/MV Maximum Ratings & Electrical Characteristics
| Core | PIC16 (8-bit RISC, 14-bit instruction word) |
| Maximum Clock Frequency | 32 MHz |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data SRAM | 1 KB (1024 bytes) |
| Data EEPROM | 256 bytes |
| Operating Voltage Range | 1.8 V to 3.6 V |
| Number of I/O Pins | 24 |
| ADC | 12-bit, up to 20 channels |
| Comparators | 2 |
| PWM Channels | 2 |
| DAC | 5-bit, 1 channel |
| Timers | 6 |
| LCD Driver | Up to 96 segments with integrated charge pump |
| Package | 28-pin UQFN (4x4 mm) with exposed pad |
| Operating Temperature | -40 C to +85 C (industrial) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16LF19155-I/MV Pin Configuration
| Pin 1 | RA0/ICDDAT — GPIO RA0 / ICD Data |
| Pin 2 | RA1/ICSPCLK — GPIO RA1 / ICSP Clock |
| Pin 3 | RA2 — GPIO RA2 |
| Pin 4 | RA3/MCLR — GPIO RA3 / Master Clear (reset) |
| Pin 5 | RA4 — GPIO RA4 |
| Pin 6 | RA5 — GPIO RA5 |
| Pin 7 | RA6 — GPIO RA6 |
| Pin 8 | RA7 — GPIO RA7 |
| Pin 9 | VSS — Ground |
| Pin 10 | RB0 — GPIO RB0 |
| Pin 11 | RB1 — GPIO RB1 |
| Pin 12 | RB2 — GPIO RB2 |
| Pin 13 | RB3 — GPIO RB3 |
| Pin 14 | RB4 — GPIO RB4 |
| Pin 15 | RB5 — GPIO RB5 |
| Pin 16 | RB6/ICDCLK — GPIO RB6 / ICD Clock |
| Pin 17 | RB7/ICDDAT — GPIO RB7 / ICD Data |
| Pin 18 | VSS — Ground |
| Pin 19 | VDD — Positive supply (1.8-3.6V) |
| Pin 20 | RC0 — GPIO RC0 |
| Pin 21 | RC1 — GPIO RC1 |
| Pin 22 | RC2 — GPIO RC2 |
| Pin 23 | RC3 — GPIO RC3 |
| Pin 24 | RC4 — GPIO RC4 |
| Pin 25 | RC5 — GPIO RC5 |
| Pin 26 | RC6 — GPIO RC6 |
| Pin 27 | RC7 — GPIO RC7 |
| Pin 28 | VSS — Ground (or EPAD) |
Typical Applications
PIC16LF19155-I/MV is suitable for 6 applications: Battery-Powered IoT Sensor Nodes with LCD Readout, Digital Thermostats and HVAC Controllers, Medical Glucose and Cholesterol Meters, Wearable Fitness Trackers with Step LCD, Electronic Shelf Labels (ESL) and Retail Signage, Industrial HMI Panels and Metering Front-Ends.
Battery-Powered IoT Sensor Nodes with LCD Readout
The PIC16LF19155-I/MV is purpose-built for coin-cell and 2xAA sensor nodes with on-device LCD readouts. Its XLP sleep current below 1 uA with full RTC and RAM retention enables multi-year battery life, while the integrated LCD charge pump drives up to 96 segments directly from a 1.8-3.6V rail - no external boost IC required. The 12-bit ADC with 20 channels handles multiple sensors (temperature, humidity, battery voltage) using hardware CVD for capacitive touch buttons, and the CLC/NCO CIPs process signals in sleep without waking the CPU. Designers can implement a wake-measure-display-sleep cycle within 10 ms active windows, extending 240 mAh CR2032 life to over five years at one wake per minute.
Recommended
Digital Thermostats and HVAC Controllers
The PIC16LF19155-I/MV fits HVAC thermostat designs where an LCD display, multiple temperature sensors, and relay outputs must coexist on a tight power budget. The integrated LCD driver supports 4-mux glass with up to 96 segments - enough for temperature digits, status icons, and mode indicators - while the 12-bit ADC reads NTC thermistors and the two on-chip comparators generate zero-crossing detection for TRIAC firing. With the PIC16LF19155's CIPs (CLC, PWM) handling time-critical triac control, the CPU can remain in sleep between user interactions, drawing under 2 uA average from a 24VAC-derived DC rail or two AA cells.
Recommended
Medical Glucose and Cholesterol Meters
The PIC16LF19155-I/MV is well suited to handheld medical meters that combine a strip-test ADC interface, multi-digit LCD, and a long-life coin cell. Its 12-bit ADC with hardware CVD simplifies strip impedance measurement, while the integrated LCD charge pump drives the 7-segment + icon display directly from two CR2032 cells. XLP sleep currents below 1 uA extend shelf life to over three years in standby - critical for medical device compliance - and the 256-byte EEPROM stores patient calibration and history. The PIC16LF19155-I/MV's IEC 60730 Class B diagnostic library support from Microchip accelerates functional safety certification.
Recommended
Wearable Fitness Trackers with Step LCD
For fitness bands and step counters that pair a small segmented LCD with an accelerometer, the PIC16LF19155-I/MV delivers the right balance of peripherals and power. The integrated LCD driver supports up to 96 segments - enough for time, step count, and battery icons - while two comparators and the CLC CIPs handle accelerometer interrupt processing without waking the CPU. Sleep current under 1 uA plus 32 kHz RTC operation means a CR2032 coin cell can power the device for over a year with continuous step counting.
Recommended
Electronic Shelf Labels (ESL) and Retail Signage
Electronic shelf labels in retail stores demand multi-year coin-cell life and segmented or dot-matrix LCDs - the PIC16LF19155-I/MV targets both. Its integrated charge pump drives 5V LCD glass from a single 3V coin cell without boost hardware, and XLP deep-sleep at <1 uA means an ESL can idle for years between RF updates. The 12-bit ADC handles battery monitoring, while the EUSART supports RF modules like SubGHz or BLE for wireless price updates. With 14KB Flash, simple ESL protocols fit without external memory.
Recommended
Industrial HMI Panels and Metering Front-Ends
Industrial HMI panels, including power meters, gas/water meters, and machine status displays, benefit from the PIC16LF19155-I/MV's combination of LCD drive, ADC channels, and Core Independent Peripherals. The 12-bit ADC with 20 channels can read multiple analog sensors (voltage, current, temperature) simultaneously through DMA-style CIP sequencing, while the integrated LCD driver shows measured values on glass displays without external bias generation. The PIC16LF19155-I/MV's industrial -40C to +85C rating and integrated op-amp/CVD peripherals reduce external component count, fitting all metering front-end signal conditioning into a single 28-UQFN device.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF19155-I/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F19155-I/MV | PIC16LF19156-I/MV | PIC16LF19175-I/MV | PIC16LF19155-I/SP | PIC16LF19155-E/MV |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-UQFN (4x4) | 28-UQFN (4x4) - same | 28-UQFN (4x4) - same | 28-UQFN (4x4) - same | 28-SPDIP - same die, different footprint | 28-UQFN (4x4) - same |
| Operating Voltage Range | 1.8 V to 3.6 V | 2.3 V to 5.5 V (wider, 5V-tolerant) | 1.8 V to 3.6 V (same) | 1.8 V to 3.6 V (same) | 1.8 V to 3.6 V (same) | 1.8 V to 3.6 V (same) |
| Flash Memory | 14 KB (8K x 14) | 14 KB (same) | 16 KB (+14%) | 28 KB (+100%) | 14 KB (same) | 14 KB (same) |
| RAM | 1 KB | 1 KB (same) | 1 KB (same) | 2 KB (+100%) | 1 KB (same) | 1 KB (same) |
| EEPROM | 256 bytes | 256 bytes (same) | 512 bytes (+100%) | 256 bytes (same) | 256 bytes (same) | 256 bytes (same) |
| Maximum Clock Frequency | 32 MHz | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) |
| Operating Temperature | -40 C to +85 C (industrial) | -40 C to +85 C (same) | -40 C to +85 C (same) | -40 C to +85 C (same) | -40 C to +85 C (same) | -40 C to +125 C (extended, +40 C wider) |
Key Differentiators
- Integrated LCD charge pump drives up to 96 segments without external boost (vs PIC16LF18346-I/P)
- Lowest voltage operation in 8-bit LCD MCU class at 1.8V minimum (vs PIC16F19155-I/MV)
- 12-bit ADC with hardware CVD supports capacitive touch without external ICs (vs PIC16F18855-I/SS)
Design Notes
Place a 100 nF ceramic decoupling capacitor within 3 mm of each VDD pin and a single 10 uF bulk capacitor near the device. For coin-cell applications drawing sub-uA sleep currents, use a low-leakage ceramic (C0G/NP0 dielectric) on AVDD to avoid supply droop during ADC conversions. The PIC16LF19155-I/MV's XLP sleep modes need the watchdog disabled and the BOR configured to lowest level to minimize reset-induced current spikes. Estimated: at 1.8V supply and 32 kHz LFINTOSC, sleep current remains under 1 uA per Microchip XLP datasheet curves.
The 28-UQFN (4x4 mm) exposed thermal pad must be soldered to a ground pad of at least 2x2 mm on the PCB for mechanical reliability and thermal dissipation. Route analog AVSS/AVDD as a star topology from a single ferrite-bead-filtered point to keep ADC noise below 1 LSB. Avoid routing high-speed digital signals (EUSART, PWM) under the LCD segment lines, as capacitive coupling can inject noise into the LCD bias generation and cause display ghosting.
Do not exceed 3.6V on any I/O pin when running from a 3.3V regulated rail - the PIC16LF19155-I/MV is not 5V-tolerant and over-voltage will trigger clamping diodes. When migrating code from PIC16F19155 to PIC16LF19155, verify that ADC references and FVR settings remain within the lower 1.8-3.6V range. The MCLR pin must have a 10 kohm pull-up to VDD if unused, or it will appear as a floating input and cause spurious resets in noisy environments.
Compliance Information
RoHS and REACH compliant per Microchip product page. Industrial temperature grade -40C to +85C only; not AEC-Q100 qualified for automotive - choose AEC-Q100-qualified variants for automotive. Halogen-free per Microchip environmental compliance documentation.
