PIC16LF1934-E/PT - 7KB Flash XLP 8-bit MCU | Microchip | 44-TQFP
MPN: PIC16LF1934-E/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.04 | $3.04 |
| 10 | $2.74 | $27.40 |
| 100 | $2.43 | $243.00 |
| 500 | $2.13 | $1,065.00 |
| 1,000 | $1.83 | $1,830.00 |
PIC16LF1934-E/PT Overview
What is a PIC16 microcontroller: A PIC16 is a family of 8-bit RISC microcontrollers from Microchip Technology built on a Harvard architecture with separate program and data buses, designed for low-power, deterministic embedded control in consumer, industrial, automotive, and IoT applications. PIC16F/LF parts sit in Microchip's mid-range 8-bit portfolio between the baseline PIC10/12/16 and the 16-bit dsPIC/PIC24 families, offering a balance of peripheral integration, code density, and power efficiency for cost-sensitive designs.
Key features of this part include: 14-channel 10-bit ADC, integrated LCD driver supporting up to 96 segments, two 8-bit timers plus one 16-bit timer, two comparators, an EUSART, MSSP (I2C/SPI) module, and the XLP suite of nanoWatt features that delivers sub-microamp sleep currents. The 44-pin TQFP (PT) package exposes up to 36 I/O pins and is suitable for hand-solderable prototyping or low-volume surface-mount assembly.
The PIC16LF1934 architecture pairs a 14-bit instruction word with a single-cycle hardware multiplier and an interrupt controller supporting context save/restore. The integrated LCD charge-pump simplifies direct segment-LCD connection without external bias components, and the ADC can be triggered from multiple sources including PWM, comparators, and the RTCC.
Typical applications include battery-powered sensor nodes, segment-LCD human-machine interfaces (HMI), consumer appliance control, industrial instrumentation with local displays, and energy-harvesting edge nodes. The XLP sleep modes (down to tens of nA typical) make it especially attractive for products that spend most of their life in standby.
Design tip: When migrating from PIC16F1934 to PIC16LF1934, verify that your 3.3V and 1.8V rails stay above the LF minimum Vdd of 1.8V at full MIPS load, because the LF silicon trades maximum Fosc headroom for ultra-low sleep current. Keep decoupling within 3 mm of each Vdd/Vss pair.
This page synthesizes distributor pricing, drop-in TQFP-44 alternatives within the PIC16F/LF193x family, and practical design notes not found on any single manufacturer or distributor page.
Drop-in alternatives for PIC16LF1934-E/PT — 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-E/PT (same form factor and footprint) — differing in Operating Temperature, Package, ADC, LCD Driver, Communication.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1934-I/PT
✅ Drop-In✓ In Stock
$2.41 / Unit
View Datasheet →PIC16F1934-I/PT
✅ Drop-In✓ In Stock
$1.66 / Unit
View Datasheet →PIC16F1934-E/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1933-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1936-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1937-I/PT
✅ Drop-In✓ In Stock
$2.21 / Unit
View Datasheet →PIC16LF18876-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.72 / Unit
View Datasheet →PIC16LF19176-E/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.55 / Unit
View Datasheet →PIC16LF1934-E/PT Maximum Ratings & Electrical Characteristics
| Family | PIC16F/LF193x (PIC16F1934 / PIC16LF1934) |
| Core | PIC16 8-bit RISC (enhanced mid-range, 14-bit instruction word) |
| Program Memory (Flash) | 7 KB |
| Data SRAM | 256 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz (8 MIPS) |
| Operating Voltage (VDD) | 1.8 V to 5.5 V |
| I/O Pins | Up to 36 |
| ADC | 10-bit, up to 14 channels |
| LCD Driver | Integrated, up to 96 segments |
| Timers | 2 x 8-bit, 1 x 16-bit |
| Comparators | 2 |
| Communication | EUSART, MSSP (I2C/SPI) |
| PWM Outputs | Yes (CCP/ECCP modules) |
| Package | 44-pin TQFP (PT), 10 x 10 x 1 mm |
| Mounting Type | Surface Mount |
| Operating Temperature | -40 C to +125 C (E = Extended Industrial) |
| Low-Power Feature | XLP (eXtreme Low Power, nanoWatt) |
| RoHS Status | Compliant |
| Programming/Debug | ICSP (In-Circuit Serial Programming), optional ICD support |
PIC16LF1934-E/PT Pin Configuration
| Pin 1 | VDD — Positive supply voltage (1.8V to 5.5V) |
| Pin 2 | RA5 — PORTA bit 5 / general-purpose I/O |
| Pin 3 | RA4 — PORTA bit 4 / general-purpose I/O |
| Pin 4 | RA3 — PORTA bit 3 / general-purpose I/O |
| Pin 5 | RA2 — PORTA bit 2 / general-purpose I/O |
| Pin 6 | RA1 — PORTA bit 1 / general-purpose I/O / ICSPCLK |
| Pin 7 | RA0 — PORTA bit 0 / general-purpose I/O / ICSPDAT |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RA7 — PORTA bit 7 / general-purpose I/O / oscillator |
| Pin 10 | RA6 — PORTA bit 6 / general-purpose I/O / oscillator |
| Pin 11 | RC0 — PORTC bit 0 / general-purpose I/O |
| Pin 12 | RC1 — PORTC bit 1 / general-purpose I/O |
| Pin 13 | RC2 — PORTC bit 2 / general-purpose I/O |
| Pin 14 | RC3 — PORTC bit 3 / general-purpose I/O |
| Pin 15 | RC4 — PORTC bit 4 / general-purpose I/O |
| Pin 16 | RC5 — PORTC bit 5 / general-purpose I/O |
| Pin 17 | RC6 — PORTC bit 6 / general-purpose I/O / TX |
| Pin 18 | RC7 — PORTC bit 7 / general-purpose I/O / RX |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply voltage (1.8V to 5.5V) |
| Pin 21 | RB0 — PORTB bit 0 / general-purpose I/O / interrupt-on-change |
| Pin 22 | RB1 — PORTB bit 1 / general-purpose I/O / interrupt-on-change |
| Pin 23 | RB2 — PORTB bit 2 / general-purpose I/O / interrupt-on-change |
| Pin 24 | RB3 — PORTB bit 3 / general-purpose I/O / interrupt-on-change |
| Pin 25 | RB4 — PORTB bit 4 / general-purpose I/O / interrupt-on-change |
| Pin 26 | RB5 — PORTB bit 5 / general-purpose I/O / interrupt-on-change |
| Pin 27 | RB6 — PORTB bit 6 / general-purpose I/O / ICSPCLK |
| Pin 28 | RB7 — PORTB bit 7 / general-purpose I/O / ICSPDAT |
| Pin 29 | VSS — Ground reference |
| Pin 30 | VDD — Positive supply voltage (1.8V to 5.5V) |
| Pin 31 | RD0 — PORTD bit 0 / general-purpose I/O / LCD segment |
| Pin 32 | RD1 — PORTD bit 1 / general-purpose I/O / LCD segment |
| Pin 33 | RD2 — PORTD bit 2 / general-purpose I/O / LCD segment |
| Pin 34 | RD3 — PORTD bit 3 / general-purpose I/O / LCD segment |
| Pin 35 | RD4 — PORTD bit 4 / general-purpose I/O / LCD segment |
| Pin 36 | RD5 — PORTD bit 5 / general-purpose I/O / LCD segment |
| Pin 37 | RD6 — PORTD bit 6 / general-purpose I/O / LCD segment |
| Pin 38 | RD7 — PORTD bit 7 / general-purpose I/O / LCD segment |
| Pin 39 | RE0 — PORTE bit 0 / general-purpose I/O / LCD COM |
| Pin 40 | RE1 — PORTE bit 1 / general-purpose I/O / LCD COM |
| Pin 41 | RE2 — PORTE bit 2 / general-purpose I/O / LCD COM |
| Pin 42 | RE3 — PORTE bit 3 / general-purpose I/O / MCLR |
| Pin 43 | VSS — Ground reference |
| Pin 44 | VDD — Positive supply voltage (1.8V to 5.5V) |
Typical Applications
PIC16LF1934-E/PT is suitable for 6 applications: Battery-Powered Sensor Nodes, Segment-LCD Human-Machine Interfaces, Consumer Appliance Control, Industrial Instrumentation with Local Display, Energy-Harvesting Edge Nodes, IoT Wireless Sensor Modules.
Battery-Powered Sensor Nodes
The PIC16LF1934-E/PT suits battery-powered sensor nodes because its XLP nanoWatt sleep current drops to tens of nA in deep sleep while preserving RAM and the RTCC, allowing multi-year coin-cell operation. The LF-variant silicon supports 1.8V minimum Vdd, matching a single CR2032 directly without boost circuitry. With 7 KB of Flash, 14 ADC channels, and integrated EUSART/I2C peripherals, the part fits typical wireless sensor designs that wake periodically to read temperature, humidity, or motion, transmit over a sub-GHz radio front-end, and return to sleep. Designers should size the wake interval against the average sleep current budget and use the ADC in burst mode to minimize active time per measurement.
Recommended
Segment-LCD Human-Machine Interfaces
The PIC16LF1934-E/PT integrates a segment-LCD driver with on-chip charge pump capable of driving up to 96 LCD segments without external bias components, eliminating the HT1621 or equivalent LCD controller BOM. The integrated charge pump simplifies 3V and 5V LCD operation and the four multiplex modes (static, 1/2, 1/3, 1/4) cover most custom and off-the-shelf glass panels. Designers can route MCU pins directly to the LCD glass and let the integrated bias generator handle common/segment waveforms, freeing GPIO for keypad scanning and communication. The 14-channel ADC adds touch-button support for modern HMI overlays alongside the traditional segment display.
Recommended
Consumer Appliance Control
Consumer appliances such as coffee machines, microwave ovens, washing machines, and air-conditioner control boards benefit from the PIC16LF1934-E/PT's combination of low cost, integrated LCD drive, and proven PIC16 toolchain. The 44-pin TQFP provides 36 I/O pins for keypad scanning, triac/relay control, sensor inputs (NTC thermistors, water level, door switch), and serial communication to the main control board via UART or I2C. The XLP sleep current keeps standby power below 0.5W for ENERGY STAR compliance, while 256 bytes of EEPROM store user preferences and last-state across power cycles.
Recommended
Industrial Instrumentation with Local Display
Industrial panel meters, process transmitters, and local indicators benefit from the PIC16LF1934-E/PT's extended -40 to +125 C temperature range, integrated segment LCD, and 14-channel 10-bit ADC. The MCU can read 4-20 mA loop signals, RTD/thermocouple inputs via op-amp front-end, and 0-10V process variables while driving a 4-digit segment-LCD for local readout. The EUSART and MSSP enable RS-485 Modbus RTU or I2C sensor extension without external transceiver overhead. The -40 to +125 C extended industrial temperature grade handles unheated enclosures and outdoor installations.
Recommended
Energy-Harvesting Edge Nodes
Energy-harvesting designs such as solar-powered IoT endpoints and piezo-vibration sensors rely on the PIC16LF1934-E/PT's sub-microamp XLP sleep modes to operate from milliwatts of harvested energy. The 1.8V minimum Vdd of the LF silicon allows direct connection to small solar cells and thin-film batteries, eliminating boost converters. The MCU can wake on RTCC alarm, ADC threshold (sensor input), or external interrupt to process and transmit data before returning to sleep. Designers typically pair the part with a low-power sub-GHz radio such as the MRF89XA or a LoRaWAN module, using the integrated EUSART for serial control.
Recommended
IoT Wireless Sensor Modules
IoT sensor modules for smart-home, asset-tracking, and remote-monitoring applications use the PIC16LF1934-E/PT as a low-power host MCU that wakes from sleep to read sensors and forward data over Wi-Fi, Bluetooth LE, or sub-GHz radio. The 7 KB Flash accommodates small communication stacks and sensor-fusion logic, while the integrated 10-bit ADC handles analog sensor channels. I2C and SPI MSSP simplify connection to digital sensors (temperature, humidity, accelerometer) and the EUSART serves as the host interface for radio modules. The 44-pin TQFP footprint allows generous GPIO for status LEDs, push-buttons, and configuration jumpers.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1934-E/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1934-I/PT | PIC16F1934-I/PT | PIC16LF1937-I/PT | PIC16LF18876-I/PT |
|---|---|---|---|---|---|
| Package | TQFP-44 (PT) | TQFP-44 (PT) | TQFP-44 (PT) | TQFP-44 (PT) | TQFP-44 (PT) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 7 KB | 7 KB | 7 KB | 14 KB | 28 KB |
| SRAM | 256 B | 256 B | 256 B | 512 B | 2048 B |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Temperature Grade | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| Integrated LCD Driver | Yes (up to 96 segments) | Yes (up to 96 segments) | Yes (up to 96 segments) | Yes (up to 96 segments) | Yes |
| XLP nanoWatt Sleep | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Lowest Vdd operation in 44-pin TQFP PIC16F193x family (vs PIC16F1934-I/PT)
- Extended -40 to +125 C temperature range vs industrial -40 to +85 C (vs PIC16LF1934-I/PT)
- Cost-optimized 7 KB Flash vs 14 KB in higher-tier PIC16LF1937 (vs PIC16LF1937-I/PT)
- Integrated segment LCD driver up to 96 segments with charge pump (vs PIC16F1934-I/PT)
- Mature, low-risk silicon vs newer PIC16LF18876 core migration (vs PIC16LF18876-I/PT)
Design Notes
Place 100 nF decoupling ceramic capacitors within 3 mm of every VDD/VSS pin pair on the PIC16LF1934-E/PT. The LF silicon's 1.8V minimum operation makes decoupling more critical than on F-variant parts because switching noise on the supply rail can directly cause ADC errors and brown-out resets. For battery-powered designs, add a 10 uF bulk capacitor near the MCU to support ADC burst-mode sampling without Vdd droop, and use the LF-specific configuration bits to disable the BOR to save ~10 nA in sleep mode if external reset is acceptable.
Do not assume code compiled for PIC16F1934 will run unchanged on PIC16LF1934 when the supply drops below 2.3V. The LF silicon requires the LF configuration bits (LVBOR enabled for safety below 2.0V) and the LF flash programming algorithm. Per the family datasheet, code that uses the F-variant-only 4x PLL above 8 MHz may not operate correctly on LF at Vdd below 2.5V. Verify all configuration words, oscillator selection bits, and LF-specific errata before shipping 1.8V-only designs.
For designs that use the integrated LCD driver, route LCD segment and common traces with adequate clearance from noisy digital lines and avoid running LCD traces parallel to high-current switching traces for more than 10 mm. Place the VLCD bypass capacitor (typically 1 uF) close to the VLCD pin. When using the integrated charge pump, the charge-pump output requires at least 100 nF bypass; failures here manifest as flickering or ghost segments at low temperature. The TQFP-44's exposed-pad-adjacent ground pins (VSS) should each be tied directly to the ground plane via multiple vias for thermal dissipation and ADC reference stability.
Reserve dedicated ICSP pins (ICSPCLK on RA1/ICSPDAT on RA0 on 40-pin PICs, or RB6/RB7 on 28-pin PICs) for in-circuit programming access. On the 44-pin TQFP, the ICSP/ICD pins are typically multiplexed with PORTA or PORTB and must be brought out to a programming header. If the design permanently reassigns these pins to other functions, plan for a 5-wire ICSP connector. The VPP/MCLR pin (RE3 on 44-pin TQFP) also requires careful layout to avoid accidental reset from capacitive coupling during programming.
When using the MSSP in I2C mode above 400 kHz, add 4.7 kohm pull-ups to both SDA and SCL and route them as short, parallel traces with a ground reference. For SPI communications above 8 MHz, route SDO/SDI/SCK traces with matched lengths (delta less than 5 mm) and place a series 33 ohm resistor near the driver pin to dampen reflections. The EUSART TX output on RC6 can drive RS-232 transceivers directly but should not exceed 5 MHz baud without RS-422/RS-485 driver protection for industrial environments with ESD exposure.
Compliance Information
RoHS compliant per Microchip product page and third-party distributor listings. Lead-free reflow profiles up to 260 C peak per JEDEC J-STD-020 supported. Not AEC-Q100 qualified - choose automotive-grade PIC16F parts from Microchip automotive portfolio for vehicle applications. REACH compliance certificates available from Microchip on request for production orders.
