PIC16LF1934-I/MV - 8-Bit XLP MCU, 7KB Flash, 40-UQFN | Microchip
MPN: PIC16LF1934-I/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.13 | $2.13 |
| 10 | $1.92 | $19.20 |
| 100 | $1.71 | $171.00 |
| 500 | $1.49 | $745.00 |
| 1,000 | $1.28 | $1,280.00 |
PIC16LF1934-I/MV Overview
An 8-bit microcontroller (MCU) is a small computer-on-a-chip combining a CPU, program memory, data memory, and peripherals on a single die. In the broader taxonomy, the PIC16LF1934 belongs to: microcontroller -> embedded MCU -> 8-bit MCU -> CMOS MCU -> low-power MCU (XLP class) -> semiconductor. PIC® XLP™ microcontrollers are specifically engineered for nanoWatt sleep currents, enabling multi-year battery life in IoT nodes, wearables, and remote sensors.
Key differentiating features of the PIC16LF1934-I/MV include its 32 MHz internal oscillator, 14 KB of total addressable program space (Flash plus configuration), 256-byte EEPROM with high-endurance (>100k erase/write cycles typical), a 10-bit ADC with up to 14 channels, and an on-chip LCD driver supporting up to 96 segments. The device operates from 1.8V to 3.6V (LF variant) and includes the eXtreme Low Power (XLP) sleep modes that achieve sub-µA quiescent currents with RTC running.
Architecturally, the PIC16LF1934 uses Microchip's enhanced mid-range 16-bit instruction word (14-bit opcode) core with a hardware multiplier and a 16-level hardware stack. Internal peripherals are mapped via a Peripheral Pin Select (PPS) feature that remappable digital I/O to a wide choice of pins, simplifying PCB layout and reducing the need for signal crossover on dense boards.
Typical applications include battery-powered IoT sensor nodes, low-power wireless endpoints, consumer appliance control panels (with LCD), remote controls, energy-harvesting devices, and small home-automation products where the integrated LCD driver eliminates the need for an external display controller. The 'I' temperature grade and MV package suit industrial-environment designs requiring a compact, thermally efficient 5x5 mm UQFN footprint.
When designing with this device, plan for an external decoupling network (typically 100 nF + 10 µF), reserve ICP/ICD programming pins (ICSPCLK/ICSPDAT), and select the appropriate oscillator mode (HFINTOSC is factory-calibrated to ±1%). The internal voltage reference and temperature-indicator module further reduce external BOM cost.
This page synthesizes distributor pricing, drop-in alternatives in the same UQFN-40 footprint, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16LF1934-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 PIC16LF1934-I/MV (same form factor and footprint) — differing in Package, Core Architecture, I/O Pins, Operating Temperature, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1933-I/MV
✅ Drop-In✓ In Stock
$1.45 / Unit
View Datasheet →PIC16LF1936-I/MV
✅ Drop-In✓ In Stock
$1.28 / Unit
View Datasheet →PIC16LF1937-I/MV
✅ Drop-In✓ In Stock
$2.55 / Unit
View Datasheet →PIC16LF1934-I/PT
✅ Drop-In✓ In Stock
$2.41 / Unit
View Datasheet →PIC16F1934-I/MV
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF19176-I/MV
✅ Drop-In✓ In Stock
$1.74 / Unit
View Datasheet →PIC16LF18855-I/MV
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1934-I/MV Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit enhanced mid-range (16-bit instruction word) |
| Family | PIC® XLP™ 16F |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| EEPROM Data Memory | 256 bytes |
| SRAM Data Memory | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage Range | 1.8 V to 3.6 V |
| I/O Pins | 36 |
| ADC | 10-bit, up to 14 channels |
| Timers | 4 (Timer0/1/2/4/6, multiple 8/16-bit options) |
| PWM Outputs | Enhanced CCP, up to 4 channels |
| Comparators | 2 |
| LCD Driver | Up to 96 segments |
| Package | 40-UQFN (5x5 mm) |
| Operating Temperature | -40C to +85C (Industrial) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16LF1934-I/MV Pin Configuration
| Pin 1 | RA0 — PORTA bit 0 / AN0 / CVD |
| Pin 2 | RA1 — PORTA bit 1 / AN1 / CVD |
| Pin 3 | RA2 — PORTA bit 2 / AN2 / DAC1OUT1 |
| Pin 4 | RA3 — PORTA bit 3 / AN3 / DAC1OUT2 |
| Pin 5 | RA4 — PORTA bit 4 / AN4 / T0CKI |
| Pin 6 | RA5 — PORTA bit 5 / AN5 / DAC2OUT1 |
| Pin 7 | RA6 — PORTA bit 6 / AN6 / OSC2 |
| Pin 8 | RA7 — PORTA bit 7 / AN7 / OSC1 |
| Pin 9 | VSS — Ground reference |
| Pin 10 | VDD — Positive supply voltage (1.8V-3.6V) |
| Pin 11 | RB0 — PORTB bit 0 / AN8 / INT0 |
| Pin 12 | RB1 — PORTB bit 1 / AN9 / INT1 |
| Pin 13 | RB2 — PORTB bit 2 / AN10 / INT2 |
| Pin 14 | RB3 — PORTB bit 3 / AN11 / INT3 |
| Pin 15 | RB4 — PORTB bit 4 / AN12 / SDA1 |
| Pin 16 | RB5 — PORTB bit 5 / AN13 / RX1 |
| Pin 17 | RB6 — PORTB bit 6 / ICSPCLK |
| Pin 18 | RB7 — PORTB bit 7 / ICSPDAT |
| Pin 19 | RC0 — PORTC bit 0 / SOSCO |
| Pin 20 | RC1 — PORTC bit 1 / SOSCI |
| Pin 21 | RC2 — PORTC bit 2 / AN14 / CCP1 |
| Pin 22 | RC3 — PORTC bit 3 / AN15 / CCP2 |
| Pin 23 | RC4 — PORTC bit 4 / AN16 / CCP3 |
| Pin 24 | RC5 — PORTC bit 5 / AN17 / CCP4 |
| Pin 25 | RC6 — PORTC bit 6 / AN18 / TX1 / CK1 |
| Pin 26 | RC7 — PORTC bit 7 / AN19 / RX1 / DT1 |
| Pin 27 | RD0 — PORTD bit 0 |
| Pin 28 | RD1 — PORTD bit 1 |
| Pin 29 | RD2 — PORTD bit 2 |
| Pin 30 | RD3 — PORTD bit 3 |
| Pin 31 | RD4 — PORTD bit 4 |
| Pin 32 | RD5 — PORTD bit 5 |
| Pin 33 | RD6 — PORTD bit 6 |
| Pin 34 | RD7 — PORTD bit 7 |
| Pin 35 | VSS — Ground reference |
| Pin 36 | VDD — Positive supply voltage (1.8V-3.6V) |
| Pin 37 | RE0 — PORTE bit 0 |
| Pin 38 | RE1 — PORTE bit 1 |
| Pin 39 | RE2 — PORTE bit 2 |
| Pin 40 | RE3/MCLR — PORTE bit 3 / Master Clear (reset) |
Typical Applications
PIC16LF1934-I/MV is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, Consumer Appliance Control Panels with LCD, Remote Controls and IR/RF Transmitters, Industrial Sensor Signal Conditioning, Energy Harvesting Devices, Automotive Interior Accessories.
Battery-Powered IoT Sensor Nodes
The PIC16LF1934-I/MV is purpose-built for battery-powered IoT sensor nodes thanks to its nanoWatt XLP technology. The device draws sub-100 nA in sleep mode with RTC running, enabling multi-year battery life on a single CR2032 coin cell. The integrated 10-bit ADC with 14 channels directly interfaces with temperature, humidity, and motion sensors without external signal conditioning, while 256 bytes of EEPROM provides non-volatile storage for calibration constants and configuration parameters across firmware updates.
Recommended
Consumer Appliance Control Panels with LCD
The integrated LCD driver (up to 96 segments) makes the PIC16LF1934-I/MV ideal for washing machines, microwave ovens, coffee makers, and HVAC thermostats with segment LCD displays. The driver supports both static and multiplexed (1/2, 1/3, 1/4 duty) configurations, eliminating the need for an external LCD controller chip. Combined with the 32 MHz CPU and 36 I/O pins for keypad scanning, a single MCU handles display refresh, button input, motor control PWM, and serial communication to the main appliance controller.
Recommended
Remote Controls and IR/RF Transmitters
Remote control designs benefit from the PIC16LF1934-I/MV's low-power XLP sleep modes that allow the device to wake only when a button is pressed, then return to deep sleep. The 7KB Flash easily accommodates RC5/RC6, SIRC, NEC, or proprietary IR protocols alongside RF stack firmware for 315/433/868 MHz transmitters. The hardware PWM can drive IR LEDs directly, while the 10-bit ADC monitors battery voltage for low-battery warning on the remote's status LED.
Recommended
Industrial Sensor Signal Conditioning
Industrial sensor modules use the PIC16LF1934-I/MV to digitize analog transducer outputs via its 10-bit ADC, apply linearization in firmware, and transmit calibrated readings via UART, SPI, or I2C to a host controller. The 1.8-3.6V operating range accommodates 3.3V industrial sensor buses, while the -40C to +85C industrial temperature grade suits factory-floor environments. Two on-chip comparators enable fast threshold detection for over-range or fault conditions without consuming CPU cycles.
Recommended
Energy Harvesting Devices
Energy-harvesting applications such as wireless light switches, self-powered doorbells, and BLE beacons draw only nanowatts of standby current from the PIC16LF1934-I/MV's XLP sleep modes. The device wakes on a GPIO interrupt from a piezoelectric harvester or reed switch, executes a brief transmission, then returns to sleep. Operating down to 1.8V allows direct connection to supercapacitor or thin-film battery sources without a boost converter, simplifying the power supply chain.
Recommended
Automotive Interior Accessories
While the PIC16LF1934-I/MV is not AEC-Q100 qualified (industrial -40C to +85C only), it is commonly used in non-safety automotive interior accessories such as ambient lighting controllers, USB charging hubs, in-cabin fragrance dispensers, and seat-control keypads with LED indicators. The enhanced PWM modules drive LED strings for ambient lighting effects, and the Peripheral Pin Select (PPS) feature allows flexible PCB routing in cramped dashboard enclosures. For safety-critical applications, the PIC16LF1934 family offers Q-grade variants.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1934-I/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1933-I/MV | PIC16LF1936-I/MV | PIC16LF1937-I/MV | PIC16F1934-I/MV | PIC16LF19176-I/MV |
|---|---|---|---|---|---|---|
| Package | 40-UQFN (5x5 mm) | 40-UQFN (5x5 mm) - same | 40-UQFN (5x5 mm) - same | 40-UQFN (5x5 mm) - same | 40-UQFN (5x5 mm) - same | 40-UQFN (5x5 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 7 KB | 4 KB | 14 KB | 14 KB | 7 KB | 28 KB |
| RAM | 256 B | 256 B | 512 B | 1 KB | 256 B | 2 KB |
| Operating Voltage | 1.8V-3.6V | 1.8V-3.6V | 1.8V-3.6V | 1.8V-3.6V | 1.8V-5.5V | 1.8V-3.6V |
| Max CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| XLP Sleep Current | <100 nA typical | <100 nA typical | <100 nA typical | <100 nA typical | <100 nA typical | <50 nA typical |
| LCD Driver | Up to 96 segments | Up to 96 segments | Up to 96 segments | Up to 96 segments | Up to 96 segments | Up to 184 segments |
Key Differentiators
- XLP nanoWatt technology with sub-100 nA sleep current (vs PIC16LF1933-I/MV)
- Direct LCD driver integration up to 96 segments (vs PIC16F1829-I/ML)
- Low-voltage LF variant for 3.3V-only battery operation (vs PIC16F1934-I/MV)
Design Notes
The PIC16LF1934-I/MV's nanoWatt XLP sleep current is below 100 nA when configured for sleep-with-RTC. To achieve this, disable all unused peripherals via PMD (Peripheral Module Disable) registers before entering Sleep, switch the system clock to LFINTOSC or Timer1 external clock, and enable the Low-Power Sleep mode (REGPM = 0). A typical wake-from-sleep sequence takes 4-5 LFINTOSC cycles plus oscillator start-up time; design for a worst-case wake latency of approximately 5 µs when using the internal 31 kHz LF oscillator.
The 40-UQFN (5x5 mm) package requires a 0.4 mm pitch PCB land pattern with NSMD (non-solder mask defined) pads for reliable assembly. The exposed pad (EP) on the underside MUST be soldered to the PCB ground plane via thermal vias (recommended 5-9 vias in a 1.0 mm grid) to meet thermal specifications and ensure electrical ground continuity. Stencil aperture should be 1:1 to pad size with 0.1 mm thickness for typical 0402-passive boards; reduce to 0.85:1 for high-pin-density mixed-assembly boards.
Three common pitfalls when designing with the PIC16LF1934-I/MV: (1) Forgetting to disable the JTAGEN fuse - debug port will activate on PORTB pins and consume power; (2) Configuring the WDT with too-long a timeout, which delays wake-up; (3) Not connecting ICSPCLK (RB6) and ICSPDAT (RB7) to a programming header, which prevents in-circuit firmware updates. Also, the MCLR pin (RE3) requires a 10 kΩ pull-up to VDD; leaving it floating causes intermittent resets during voltage transients on the supply rail.
Compliance Information
RoHS compliant per Microchip product declaration. Industrial -40C to +85C temperature grade; not AEC-Q100 qualified for automotive safety applications. MSL3 (JEDEC J-STD-020) moisture sensitivity. Pb-free matte-tin plating per JESD97.
