PIC16LF1934T-I/MV - 8-bit MCU, 7KB Flash, 32MHz, UQFN-40
MPN: PIC16LF1934T-I/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.55 | $25.50 |
| 100 | $2.27 | $227.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.82 | $1,820.00 |
PIC16LF1934T-I/MV Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, RAM, and peripherals on a single die; the PIC16 family uses a RISC-based Harvard architecture with a 14-bit instruction word optimized for deterministic interrupt latency and low code density. Within the broader microcontroller taxonomy, 8-bit MCUs sit below 16-bit and 32-bit cores in raw throughput but dominate cost-sensitive and ultra-low-power applications where every microwatt of quiescent current matters.
Key features include 35 digital I/O lines, five 8-bit timers plus one 16-bit timer, a 10-bit ADC with up to 14 channels, two comparators, five PWM modules with capture/compare, an EUSART for asynchronous serial, two I2C/SPI MSSP peripherals, and a capacitive touch mTouch peripheral. The nanoWatt XLP technology drops quiescent current to roughly 50 nA in sleep mode and below 1 µA in real-time-clock operation from a 1.8 V supply, supporting multi-year coin-cell life.
The device is built on a CMOS process with a wide 1.8 V to 3.6 V supply range and operates across -40 °C to +85 °C industrial temperatures. Its integrated LCD driver supports up to 96 segments, enabling direct glass drive without an external charge-pump or controller. On-chip peripherals like the 32 kHz oscillator timer, brown-out reset (BOR), and watchdog timer reduce external component count for compact sensor and user-interface modules.
Typical applications include small home-appliance keypads, battery-powered sensor nodes, consumer remote controls, low-cost instrumentation front-ends, capacitive-touch human-machine interfaces, and white-goods or HVAC user-interface boards. Designers choose the PIC16LF1934 for its combination of integrated LCD, mTouch, and very low sleep current in a compact 40-pin QFN footprint.
When designing with this MCU, ensure decoupling capacitance is placed within 5 mm of VDD/AVDD and that the exposed pad (EP) is soldered to a properly grounded copper pour to meet thermal and electrical performance. Use the MPLAB X IDE with the XC8 compiler and PICkit or ICD programmer to debug and program the device in-circuit.
This page synthesizes real-time distributor pricing, same-brand drop-in pin-compatible alternatives, and practical low-power design notes that are not consolidated in the manufacturer datasheet alone.
Drop-in alternatives for PIC16LF1934T-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 PIC16LF1934T-I/MV (same form factor and footprint) — differing in I/O Pins, Package, Operating Temperature, Program Memory (Flash), LCD Driver.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1934-I/MV
✅ Drop-In✓ In Stock
$1.28 / Unit
View Datasheet →PIC16LF1933T-I/MV
✅ Drop-In✓ In Stock
$1.52 / Unit
View Datasheet →PIC16LF1933-I/MV
✅ Drop-In✓ In Stock
$1.45 / Unit
View Datasheet →PIC16LF1934T-I/MV Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC RISC (Harvard) |
| Family | PIC16LF193x |
| Instruction Set Width | 14-bit |
| Program Memory (Flash) | 7 KB |
| Data EEPROM | 256 bytes |
| Data SRAM | 256 bytes |
| Maximum CPU Frequency | 32 MHz |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 35 |
| ADC | 10-bit, up to 14 channels |
| Timers | 5 x 8-bit + 1 x 16-bit |
| PWM Modules | 5 |
| Comparators | 2 |
| Communication | 1 x EUSART, 2 x MSSP (I2C/SPI) |
| LCD Driver | Up to 96 segments |
| Capacitive Touch | mTouch peripheral |
| Low-Power Mode | nanoWatt XLP, ~50 nA sleep |
| Operating Temperature | -40 °C to +85 °C (Industrial) |
| Package | 40-pin UQFN (MV) 5x5 mm |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16LF1934T-I/MV Pin Configuration
| Pin 1 | RA0/AN0 — Bidirectional I/O / ADC channel 0 |
| Pin 2 | RA1/AN1 — Bidirectional I/O / ADC channel 1 |
| Pin 3 | RA2/AN2 — Bidirectional I/O / ADC channel 2 |
| Pin 4 | RA3/AN3 — Bidirectional I/O / ADC channel 3 / VREF+ |
| Pin 5 | RA4/AN4 — Bidirectional I/O / ADC channel 4 |
| Pin 6 | RA5/AN5 — Bidirectional I/O / ADC channel 5 |
| Pin 7 | RA6/OSC2 — Bidirectional I/O / crystal oscillator output |
| Pin 8 | RA7/OSC1 — Bidirectional I/O / crystal oscillator input |
| Pin 9 | VDD — Positive supply voltage (1.8V-3.6V) |
| Pin 10 | VSS — Ground reference |
| Pin 11 | RB0/INT — Bidirectional I/O / external interrupt |
| Pin 12 | RB1 — Bidirectional I/O |
| Pin 13 | RB2 — Bidirectional I/O |
| Pin 14 | RB3 — Bidirectional I/O |
| Pin 15 | RB4 — Bidirectional I/O |
| Pin 16 | RB5 — Bidirectional I/O |
| Pin 17 | RB6/ICSPCLK — Bidirectional I/O / ICSP clock |
| Pin 18 | RB7/ICSPDAT — Bidirectional I/O / ICSP data |
| Pin 19 | RC0 — Bidirectional I/O |
| Pin 20 | RC1 — Bidirectional I/O |
| Pin 21 | RC2 — Bidirectional I/O |
| Pin 22 | RC3 — Bidirectional I/O |
| Pin 23 | RC4 — Bidirectional I/O |
| Pin 24 | RC5 — Bidirectional I/O |
| Pin 25 | RC6 — Bidirectional I/O |
| Pin 26 | RC7 — Bidirectional I/O |
| Pin 27 | RE3/MCLR — Input only / Master Clear (reset) |
| Pin 28 | RD0 — Bidirectional I/O |
| Pin 29 | RD1 — Bidirectional I/O |
| Pin 30 | RD2 — Bidirectional I/O |
| Pin 31 | RD3 — Bidirectional I/O |
| Pin 32 | RD4 — Bidirectional I/O |
| Pin 33 | RD5 — Bidirectional I/O |
| Pin 34 | RD6 — Bidirectional I/O |
| Pin 35 | RD7 — Bidirectional I/O |
| Pin 36 | AVDD — Analog positive supply |
| Pin 37 | AVSS — Analog ground |
| Pin 38 | SEG0 — LCD segment 0 driver |
| Pin 39 | SEG1 — LCD segment 1 driver |
| Pin 40 | EP — Exposed thermal pad - must be soldered to ground pour |
Typical Applications
PIC16LF1934T-I/MV is suitable for 7 applications: Battery-Powered Sensor Node, Home Appliance User Interface with LCD, Consumer Remote Control, Industrial Sensor Hub with mTouch, Low-Cost Instrumentation Front-End, Capacitive Touch Keypad Module, Small Motor Control / PWM Driver.
Battery-Powered Sensor Node
The PIC16LF1934T-I/MV's nanoWatt XLP technology drops sleep current to roughly 50 nA with the 32 kHz RTC running, enabling multi-year coin-cell life in wireless sensor nodes. Its 10-bit ADC with up to 14 channels directly digitizes analog sensor outputs without external signal conditioning, while the 7 KB Flash accommodates application firmware plus MPLAB Xpress cloud-generated code. Compared with discrete microcontroller-plus-RTC designs, the integrated PIC16LF1934T-I/MV reduces BOM count and PCB area.
Recommended
Home Appliance User Interface with LCD
The PIC16LF1934T-I/MV integrates a 96-segment LCD controller that directly drives a TN/STN glass display without an external charge-pump or COG driver, simplifying white-goods, microwave, and HVAC interface boards. Its 35 I/O lines accommodate up to 20 segment pins plus keypad matrix scanning, while the integrated mTouch peripheral handles capacitive buttons on the same die. The 1.8 V to 3.6 V supply range enables direct 2-cell alkaline operation without an LDO.
Recommended
Consumer Remote Control
With sleep current near 50 nA and wake-up time under 5 µs, the PIC16LF1934T-I/MV is purpose-built for IR/Zigbee remote controls that spend 99 percent of their life in deep sleep. Its mTouch capacitive-sensing peripheral enables touch-pad interfaces on smart-TV remotes, while the 10-bit PWM channels drive IR-LED modulation directly without external drivers. Compared with 32-bit Cortex-M alternatives, the PIC16LF1934T-I/MV costs less and runs from a single CR2032 cell for years.
Recommended
Industrial Sensor Hub with mTouch
The PIC16LF1934T-I/MV's mTouch capacitive-sensing module supports up to 16 touch channels without external components, enabling sealed front-panel designs in factory automation and process-control HMIs. Its industrial -40 °C to +85 °C temperature range and brown-out reset circuitry ensure reliable operation on noisy 24 V-derived rails. Designers benefit from PIC's deterministic interrupt latency for safety-critical button-debounce and emergency-stop handling.
Recommended
Low-Cost Instrumentation Front-End
The PIC16LF1934T-I/MV combines a 10-bit ADC, two comparators, and an op-amp-capable internal analog structure on a single die, allowing direct interface with thermocouples, RTDs, and strain gauges in low-cost measurement instruments. The 32 MHz CPU supports real-time linearization and calibration algorithms, while the EUSART provides RS-232 or RS-485 connectivity via an external transceiver. Compared with analog-only designs, the integrated PIC16LF1934T-I/MV eliminates the need for a separate signal-conditioning ASIC.
Recommended
Capacitive Touch Keypad Module
The PIC16LF1934T-I/MV integrates Microchip's mTouch peripheral with hardware-driven acquisition, supporting up to 16 capacitive buttons or a 4x4 matrix with no external components other than the sensor traces themselves. Its 32 MHz core handles proximity detection and backlight PWM in real time while still drawing sub-microamp sleep current for battery-operated keypads. The 40-pin UQFN (MV) package keeps the design footprint under 25 mm² for compact wall-mounted controllers.
Recommended
Small Motor Control / PWM Driver
With five PWM channels and a 32 MHz CPU, the PIC16LF1934T-I/MV can drive brushed DC, unipolar stepper, or small BLDC motors in appliances and toys. Its comparators enable hardware overcurrent protection without CPU intervention, while the 10-bit ADC samples motor current at the PWM frequency for closed-loop torque control. Compared with discrete analog motor controllers, the PIC16LF1934T-I/MV adds programmable acceleration profiles and diagnostic UART logging.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1934T-I/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1934-I/MV | PIC16LF1933T-I/MV | PIC16LF1933-I/MV |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-pin UQFN (MV) 5x5 mm | 40-pin UQFN (MV) 5x5 mm - same | 40-pin UQFN (MV) 5x5 mm - same | 40-pin UQFN (MV) 5x5 mm - same |
| Program Memory (Flash) | 7 KB | 7 KB | 3.5 KB (-50%) | 3.5 KB (-50%) |
| Data EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Data SRAM | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| I/O Pins | 35 | 35 | 36 (+1) | 36 (+1) |
| ADC | 10-bit, 14 channels | 10-bit, 14 channels | 10-bit, 11 channels | 10-bit, 11 channels |
| LCD Driver | 96 segments | 96 segments | 64 segments | 64 segments |
| Sleep Current (typical) | ~50 nA (nanoWatt XLP) | ~50 nA | ~50 nA | ~50 nA |
| Packaging | Tape & Reel | Tray | Tape & Reel | Tray |
Key Differentiators
- Integrated 96-segment LCD controller eliminates external COG driver (vs PIC16LF1933T-I/MV)
- Full 7 KB Flash doubles firmware headroom over the family (vs PIC16LF1933T-I/MV)
- Reel-ready packaging variant for high-volume pick-and-place (vs PIC16LF1934-I/MV)
- More ADC channels for higher sensor-count applications (vs PIC16LF1933T-I/MV)
Design Notes
Estimated (using VIN=2.0V, VDD=3.3V via boost): a CR2032 coin cell rated 220 mAh at 2.0 V can supply the PIC16LF1934T-I/MV for over 5 years when the device wakes once per minute for a 10 ms sensor read and returns to ~50 nA sleep. Designers should disable the WDT and unused peripherals in active mode and switch to the internal 31 kHz LFINTOSC during sleep to minimize current draw.
The UQFN-40 (MV) package has a thermal resistance (theta_JA) of approximately 33 °C/W when the exposed pad is soldered to a 1 square inch ground pour on a standard 4-layer JEDEC test PCB. At the industrial -40 °C to +85 °C operating range, this leaves ample headroom for the typical 8 mA active CPU current at 32 MHz. Ensure the exposed pad is fully soldered for both thermal dissipation and electrical ground reference.
Place a 100 nF ceramic decoupling capacitor within 5 mm of the VDD/AVDD pins, plus a bulk 10 µF tantalum or ceramic capacitor near the IC supply pin. Route the 32.768 kHz crystal traces symmetrically and as short as possible to the SOSC0/SOSC1 pins to minimize load capacitance error. The UQFN-40 land pattern requires a non-solder-mask-defined (NSMD) pad with an opening of 0.30 mm pitch.
Do not leave the MCLR pin floating - either tie it to VDD through a 10 kΩ resistor or drive it with a pushbutton reset network. The LCD segment pins are multiplexed with standard I/O; configure the LCDCON register before assigning those pins as GPIO. The mTouch sensing inputs require a guard ring or grounded trace nearby to prevent false triggers from adjacent switching signals.
For long traces to the ADC inputs, add a small RC filter (100 Ω + 1 nF) to limit noise bandwidth below the Nyquist rate. Avoid routing switching signals (PWM outputs, clock traces) parallel to analog inputs to prevent coupling. The internal bandgap reference settles in approximately 1 ms after enabling; allow adequate acquisition time before starting a conversion.
Compliance Information
RoHS and REACH compliance per Microchip product page. Industrial temperature grade only - AEC-Q100 qualification not available for this part number. Choose PIC16LF1934-E/MV (extended temperature) or AEC-Q100 qualified PIC variants for harsh-environment applications.
