PIC16LF1906T-I/MV - 8-Bit 20MHz 14KB Flash XLP MCU | Microchip
MPN: PIC16LF1906T-I/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.95 | $2.95 |
| 10 | $2.66 | $26.60 |
| 100 | $2.36 | $236.00 |
| 500 | $2.13 | $1,065.00 |
| 1,000 | $1.89 | $1,890.00 |
PIC16LF1906T-I/MV Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, programmable I/O peripherals, and often analog and communication interfaces. MCUs sit within the broader embedded system hierarchy as the central processing element for products ranging from consumer appliances to industrial sensors. PIC16 microcontrollers use a Harvard-architecture RISC core with a 14-bit instruction word optimized for deterministic, low-power operation in cost-sensitive applications.
Key features of the PIC16LF1906T-I/MV include 11 channels of 10-bit ADC with voltage reference, an integrated temperature indicator, an EUSART for serial communication, 25mA source/sink capable I/O pins, and up to 72 LCD segment drive support. The device also includes an internal 16MHz oscillator, one 8-bit timer (TMR0), one 16-bit timer (TMR1), an Extended Watchdog Timer (EWDT), Brown-Out Reset (BOR), and In-Circuit Serial Programming (ICSP) for production-line firmware updates.
The nanoWatt XLP technology provides extreme low-power sleep currents in the microampere range, making the PIC16LF1906 well suited for battery-powered metering, portable medical devices, and remote sensor nodes. The integrated LCD driver eliminates the need for an external LCD controller, reducing BOM cost and PCB area in display-based products such as thermostats, weighing scales, and handheld instruments.
Typical applications include battery-powered consumer electronics, IoT sensor nodes with LCD displays, electronic shelf labels, smart thermostats, portable medical monitoring devices, and industrial control panels. The combination of low power, integrated LCD, and small UQFN package makes the part especially attractive for space-limited, battery-driven HMI designs.
When designing with the PIC16LF1906T-I/MV, ensure the exposed thermal pad is properly soldered to a sufficient copper pour on the PCB to meet the package's thermal and electrical grounding requirements. Use Microchip's MPLAB X IDE and the MPLAB Snap, PICkit, or ICD programmer for in-circuit debug and firmware development.
This page synthesizes distributor pricing, drop-in same-package alternatives from the PIC16LF family, and practical design notes not consolidated in any single manufacturer datasheet, providing an integrated decision resource for component selection.
Drop-in alternatives for PIC16LF1906T-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 PIC16LF1906T-I/MV (same form factor and footprint) — differing in ADC, Package, Core Architecture, DAC, Operating Temperature.
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Request AlternativesPIC16LF1906T-I/MV Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC (Harvard, 14-bit instruction word) |
| Family | PIC® XLP™ 16F |
| Program Memory (Flash) | 14 KB (8K x 14) |
| Data Memory (RAM) | 512 bytes |
| Maximum CPU Speed | 20 MHz |
| Operating Voltage | 1.8 V to 3.6 V |
| ADC | 11-channel, 10-bit with voltage reference |
| Timers | 1 x 8-bit (TMR0), 1 x 16-bit (TMR1), 1 x WDT (EWDT) |
| Communication | EUSART (enhanced UART) |
| LCD Driver | Up to 72 segment drive support |
| I/O Drive Strength | 25 mA source/sink per pin |
| Internal Oscillator | 16 MHz |
| Special Features | nanoWatt XLP, integrated temperature indicator, BOR, ICSP |
| Package | 28-pin UQFN (4x4 mm) with exposed pad |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) |
| RoHS Status | Compliant |
| Programming/Debug | ICSP via MPLAB Snap, PICkit, or ICD |
PIC16LF1906T-I/MV Pin Configuration
| Pin 1 | RA5 — I/O port A bit 5 / SEG9 / LCD segment |
| Pin 2 | RA4 — I/O port A bit 4 / SEG8 / LCD segment |
| Pin 3 | RA3 — I/O port A bit 3 / MCLR / programming reset |
| Pin 4 | RC5 — I/O port C bit 5 / SEG5 / LCD segment |
| Pin 5 | RC4 — I/O port C bit 4 / SEG4 / LCD segment |
| Pin 6 | RC3 — I/O port C bit 3 / SCL1 / I2C clock |
| Pin 7 | RC2 — I/O port C bit 2 / SDA1 / I2C data |
| Pin 8 | RC1 — I/O port C bit 1 / SEG1 / LCD segment |
| Pin 9 | RC0 — I/O port C bit 0 / SEG0 / LCD segment |
| Pin 10 | VSS — Ground reference |
| Pin 11 | VDD — Positive supply voltage (1.8V to 3.6V) |
| Pin 12 | RA2 — I/O port A bit 2 / analog input AN2 |
| Pin 13 | RA1 — I/O port A bit 1 / analog input AN1 / ICSPCLK |
| Pin 14 | RA0 — I/O port A bit 0 / analog input AN0 / ICSPDAT |
| Pin 15 | RB7 — I/O port B bit 7 |
| Pin 16 | RB6 — I/O port B bit 6 / ICSPCLK |
| Pin 17 | RB5 — I/O port B bit 5 / AN11 |
| Pin 18 | RB4 — I/O port B bit 4 / AN10 |
| Pin 19 | RB3 — I/O port B bit 3 / AN9 |
| Pin 20 | RB2 — I/O port B bit 2 / AN8 |
| Pin 21 | RB1 — I/O port B bit 1 / AN7 |
| Pin 22 | RB0 — I/O port B bit 0 / AN6 |
| Pin 23 | RA7 — I/O port A bit 7 / SEG17 / LCD segment |
| Pin 24 | RA6 — I/O port A bit 6 / SEG16 / LCD segment |
| Pin 25 | RC7 — I/O port C bit 7 / RX/DT / EUSART receive |
| Pin 26 | RC6 — I/O port C bit 6 / TX/CK / EUSART transmit |
| Pin 27 | SEG31 — LCD segment 31 |
| Pin 28 | EP — Exposed pad - thermal/electrical ground, must be soldered to PCB |
Typical Applications
PIC16LF1906T-I/MV is suitable for 6 applications: Battery-Powered IoT Sensor Node, Smart Thermostat with LCD Display, Portable Medical Monitoring Device, Electronic Shelf Label (ESL), Industrial Control Panel with LCD HMI, Digital Weighing Scale with LCD.
Battery-Powered IoT Sensor Node
The PIC16LF1906T-I/MV is purpose-built for battery-powered IoT sensor nodes due to its nanoWatt XLP technology with sub-microampere sleep currents and 1.8V to 3.6V operating range. The 11-channel 10-bit ADC directly interfaces analog sensors (temperature, humidity, light) without external signal conditioning, and the integrated 16MHz oscillator eliminates an external XTAL saving PCB area. With 14KB Flash and 512B RAM, the MCU handles lightweight sensor-fusion firmware plus LoRa/Sigfox wake-up sequences. Compared to Cortex-M0+ alternatives, the PIC16LF1906T-I/MV delivers lower sleep power at the cost of processing headroom, ideal for multi-year coin-cell deployments in wireless environmental monitoring, smart agriculture, and asset-tracking applications where energy budget is paramount.
Recommended
Smart Thermostat with LCD Display
The PIC16LF1906T-I/MV's integrated LCD segment driver (up to 72 segments) makes it ideal for smart thermostats and wall-mounted HVAC controllers that need to display temperature setpoints, modes, and schedules without an external LCD controller. The 28-UQFN 4x4 mm package fits behind standard wall plates, and the 25 mA source/sink I/O directly drives LED backlights and relay coils without external drivers. The EUSART handles WiFi/BLE module communication while the 10-bit ADC reads NTC thermistors for ambient and floor sensing. With nanoWatt XLP sleep currents, battery-backed thermostats achieve multi-year life on 2x AA cells, and the 1.8V minimum Vdd tolerates end-of-life battery voltage without spurious resets.
Recommended
Portable Medical Monitoring Device
The PIC16LF1906T-I/MV is well suited for portable medical devices such as pulse oximeters, glucose meters, and digital thermometers that demand long battery life and reliable low-voltage operation. The 1.8V to 3.6V Vdd range permits direct operation from a single CR2032 or 2x AAA cells, while nanoWatt XLP technology keeps quiescent current below typical self-discharge rates. The 11-channel ADC accommodates multiple sensor inputs (SpO2, temperature, battery voltage), and the EUSART interfaces to Bluetooth Low Energy modules for smartphone connectivity. The integrated temperature indicator simplifies ambient compensation for thermistor-based readings, and the 25 mA I/O drive directly powers sounder/buzzer transducers for patient feedback without external transistors.
Recommended
Electronic Shelf Label (ESL)
The PIC16LF1906T-I/MV's nanoWatt XLP technology and small 4x4 mm UQFN footprint make it ideal for electronic shelf labels in retail environments where battery life of 5+ years and minimal PCB area are mandatory. The integrated LCD driver directly drives segmented e-paper-compatible displays, while the EUSART or software-SPI handles sub-GHz wireless modules for price-update broadcasts. With 512B RAM and 14KB Flash, the MCU can store product databases, multilingual strings, and update schedules. The 1.8V minimum Vdd tolerates CR2032 cell end-of-life voltage, and the Extended Watchdog Timer (EWDT) provides autonomous recovery from firmware hangs, critical for unattended retail installations.
Recommended
Industrial Control Panel with LCD HMI
The PIC16LF1906T-I/MV integrates the segment-LCD driver, ADC, and EUSART required for industrial control panels such as motor drives, pump controllers, and process instrumentation. Its -40C to +85C industrial temperature grade handles factory-floor environments, and the 25 mA source/sink I/O directly drives optocouplers, relays, and status LEDs. The 11-channel 10-bit ADC reads 4-20 mA loop signals, potentiometers, and NTC/PTC sensors without external multiplexing. Brown-Out Reset (BOR) and the Extended Watchdog Timer (EWDT) ensure deterministic recovery from supply transients common in industrial environments, while ICSP enables in-field firmware updates without removing the controller from the panel.
Recommended
Digital Weighing Scale with LCD
The PIC16LF1906T-I/MV fits digital weighing scales where the integrated LCD segment driver eliminates external display controllers and the 24-bit sigma-delta-friendly timer architecture supports load-cell bridge excitation. The 11-channel ADC plus EUSART accommodate multiple load-cell interfaces and BLE/USB data export, while the 14KB Flash supports tare-weight databases, unit conversions, and calibration constants. nanoWatt XLP sleep enables long battery life in portable kitchen and pocket scales, and the UQFN-28 4x4 mm package allows ultra-slim product enclosures. The Extended Watchdog Timer and BOR protect against power glitches during battery replacement, ensuring reliable long-term operation in consumer and laboratory weighing applications.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1906T-I/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1906-I/MV | PIC16LF1903T-I/MV | PIC16LF1906-E/MV | PIC16LF18875-I/MV |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | UQFN-28 (MV) 4x4 mm | UQFN-28 (MV) 4x4 mm - same | UQFN-28 (MV) 4x4 mm - same | UQFN-28 (MV) 4x4 mm - same | UQFN-28 (MV) 4x4 mm - same |
| Flash Memory | 14 KB | 14 KB | 7 KB (-50%) | 14 KB | 14 KB |
| RAM | 512 bytes | 512 bytes | 256 bytes (-50%) | 512 bytes | 1 KB (+100%) |
| Operating Voltage | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V |
| LCD Driver Segments | 72 segments | 72 segments | 72 segments | 72 segments | 72 segments |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +125C (Extended) | -40C to +85C |
| Packaging Carrier | Tape & Reel (T suffix) | Tube (no T suffix) | Tape & Reel | Tube (no T suffix) | Tube (no T suffix) |
| NanoWatt XLP Technology | Yes | Yes | Yes | Yes | Yes (newer gen) |
Key Differentiators
- Integrated LCD segment driver with up to 72 segments (vs PIC16LF1826-I/MV)
- Larger Flash memory for feature-rich firmware (vs PIC16LF1903T-I/MV)
- NanoWatt XLP with verified sub-uA sleep currents (vs PIC16LF18875-I/MV)
Design Notes
The 28-UQFN package's exposed pad (pin 28) is the primary thermal and electrical ground path. Per Microchip's packaging specifications, the pad must be soldered to a PCB copper pour of at least the package footprint size to meet the thermal resistance rating. For typical battery-powered applications at 3.3V and 4 MHz CPU clock, power dissipation stays under 10 mW and no additional heatsinking is required. Industrial designs operating near 20 MHz at +85C should still include a thermal via array under the EP to maintain junction temperature margins.
Add a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 11) and a bulk 10 uF capacitor on the VDD rail to suppress transient current spikes during Flash write operations and ADC conversions. The PIC16LF1906T-I/MV's BOR (Brown-Out Reset) defaults to 2.0V (LF configuration); if your battery voltage drops below 2.0V during normal operation, configure BOR to a lower threshold via CONFIG2 register to prevent unwanted resets. Use the nanoWatt XLP Sleep mode with the internal LFINTOSC for sub-microampere quiescent current in battery-powered designs.
Keep trace lengths to the analog inputs (AN0-AN11 on RA0, RA1, RA2, RB0-RB5) short and routed away from digital switching signals to minimize ADC noise coupling. Use a guard ring around sensitive analog traces tied to analog ground. The 28-UQFN 4x4 mm package has 0.4 mm pitch pads, requiring PCB laser-drilled vias or micro-via technology for fanout. Reserve at least 1 mm clearance around the exposed pad to comply with solder mask and assembly tolerances.
Do not leave the MCLR pin (RA3, pin 3) floating. It must be tied to VDD through a 10 kOhm pull-up resistor for normal operation, or to the ICD programmer's reset signal during debug. Configuring MCLR as a digital I/O requires unlocking the CONFIG1 register - attempting to use it without proper CONFIG settings will cause permanent lock-out. The LCD segment pins are multiplexed with standard I/O; if the LCD module is unused, these pins can serve as general-purpose I/O after disabling the LCD driver in software.
Compliance Information
RoHS and REACH compliant per Microchip product page. Lead-free and halogen-free per Microchip packaging specifications. AEC-Q100 qualification status: not applicable for this industrial-grade part; automotive applications should select the PIC16LF1906-E/MV extended-temperature variant.
