PIC16F1934-E/ML - 8-bit PIC XLP MCU 7KB Flash 32MHz QFN-44 | Microchip
MPN: PIC16F1934-E/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.92 | $2.92 |
| 10 | $2.62 | $26.20 |
| 100 | $2.21 | $221.00 |
| 500 | $1.95 | $975.00 |
| 1,000 | $1.74 | $1,740.00 |
PIC16F1934-E/ML Overview
What is an 8-bit PIC microcontroller? A PIC (Peripheral Interface Controller) microcontroller is a Harvard-architecture RISC device that integrates a CPU, non-volatile program memory, RAM, peripherals and I/O into a single chip. Within that hierarchy, the PIC16F1934 belongs to the PIC16 family -> mid-range 8-bit MCUs -> nanoWatt XLP extreme-low-power family -> 28/40/44-pin LCD-driver sub-family. PIC MCUs are widely used for compact, low-power embedded control in consumer, industrial and automotive applications.
Key features include 32 MHz max CPU speed, 14-channel 10-bit ADC, on-chip LCD driver supporting up to 96 segments, multiple communication peripherals (EUSART, MSSP for SPI/I2C), up to 36 digital I/O pins, and nanoWatt XLP technology for sub-uA sleep currents. The integrated LCD driver eliminates the need for an external segment-driver IC, reducing both BOM cost and PCB area in segment-display designs.
The PIC16F1934-E variant is specified for the -40C to +125C extended industrial/automotive temperature range, making it suitable for harsh-environment deployments. The 44-QFN package with exposed thermal pad delivers low thermal resistance and a compact 8x8 mm footprint for space-constrained boards.
Typical applications include battery-powered sensor nodes with LCD readouts, consumer remote controls, industrial metering, home appliances with segmented displays, and small automotive body modules. The combination of low power, integrated LCD, and EEPROM makes it a strong fit for metering and handheld instruments.
Design consideration: route the exposed pad (EP) to a solid ground plane for thermal and electrical performance; do not use the LCD charge pump output to drive backplanes larger than the datasheet-recommended panel capacitance without buffering.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16F1934-E/ML — 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 PIC16F1934-E/ML (same form factor and footprint) — differing in LCD Driver, Package, Timers, Communication, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1934-I/ML
✅ Drop-In✓ In Stock
$1.74 / Unit
View Datasheet →PIC16F1934T-E/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1934T-I/ML
✅ Drop-In✓ In Stock
$1.78 / Unit
View Datasheet →PIC16F1936-I/ML
✅ Drop-In✓ In Stock
$2.15 / Unit
View Datasheet →PIC16F1937-I/ML
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →PIC16F1934-E/ML Maximum Ratings & Electrical Characteristics
| Product Family | PIC16F193x (mid-range 8-bit) |
| Core | Enhanced mid-range 8-bit PIC RISC |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data SRAM | 256 bytes |
| Data EEPROM | 256 bytes |
| Max CPU Clock | 32 MHz |
| Operating Voltage (Vdd) | 1.8 V to 5.5 V |
| Operating Temperature | -40C to +125C (E = extended) |
| Digital I/O Pins | 36 (max for this family) |
| ADC | 10-bit, up to 14 channels |
| Comparators | 2 |
| Timers | 4 (8-bit / 16-bit mix) |
| LCD Driver | Integrated, up to 96 segments |
| EUSART | 1 |
| MSSP (SPI / I2C) | 1 |
| PWM | Yes (CCP/ECCP) |
| Package | 44-pin QFN (8x8 mm) with EP |
| Mounting Type | Surface Mount |
| RoHS | Compliant |
PIC16F1934-E/ML Pin Configuration
| Pin 1 | RB5 — PORTB I/O bit 5 |
| Pin 2 | RB4 — PORTB I/O bit 4 |
| Pin 3 | RB3 — PORTB I/O bit 3 |
| Pin 4 | RB2 — PORTB I/O bit 2 |
| Pin 5 | RB1 — PORTB I/O bit 1 |
| Pin 6 | RB0 — PORTB I/O bit 0 / INT |
| Pin 7 | VDD — Positive supply |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RA7 — PORTA I/O bit 7 |
| Pin 10 | RA6 — PORTA I/O bit 6 |
| Pin 11 | RC7 — PORTC I/O bit 7 / RX/DT |
| Pin 12 | RC6 — PORTC I/O bit 6 / TX/CK |
| Pin 13 | RC5 — PORTC I/O bit 5 |
| Pin 14 | RC4 — PORTC I/O bit 4 |
| Pin 15 | RC3 — PORTC I/O bit 3 / SCL |
| Pin 16 | RC2 — PORTC I/O bit 2 |
| Pin 17 | RC1 — PORTC I/O bit 1 |
| Pin 18 | RC0 — PORTC I/O bit 0 |
| Pin 19 | RA0 — PORTA I/O bit 0 / AN0 |
| Pin 20 | RA1 — PORTA I/O bit 1 / AN1 |
| Pin 21 | RA2 — PORTA I/O bit 2 / AN2 |
| Pin 22 | RA3 — PORTA I/O bit 3 / AN3 / VREF+ |
| Pin 23 | RA4 — PORTA I/O bit 4 / AN4 |
| Pin 24 | RA5 — PORTA I/O bit 5 / AN5 |
| Pin 25 | RE3 — PORTE I/O bit 3 / MCLR |
| Pin 26 | RD0 — PORTD I/O bit 0 |
| Pin 27 | RD1 — PORTD I/O bit 1 |
| Pin 28 | RD2 — PORTD I/O bit 2 |
| Pin 29 | RD3 — PORTD I/O bit 3 |
| Pin 30 | RD4 — PORTD I/O bit 4 |
| Pin 31 | RD5 — PORTD I/O bit 5 |
| Pin 32 | RD6 — PORTD I/O bit 6 |
| Pin 33 | RD7 — PORTD I/O bit 7 |
| Pin 34 | VSS — Ground |
| Pin 35 | VDD — Positive supply |
| Pin 36 | RB7 — PORTB I/O bit 7 |
| Pin 37 | RB6 — PORTB I/O bit 6 / PGC |
| Pin 38 | RB5 — PORTB I/O bit 5 / PGD |
| Pin 39 | RB4 — PORTB I/O bit 4 |
| Pin 40 | RB3 — PORTB I/O bit 3 |
| Pin 41 | RB2 — PORTB I/O bit 2 |
| Pin 42 | RB1 — PORTB I/O bit 1 |
| Pin 43 | RB0 — PORTB I/O bit 0 |
| Pin 44 | VSS — Ground (also exposed pad) |
Typical Applications
PIC16F1934-E/ML is suitable for 6 applications: Battery-Powered Sensor Node with LCD, Industrial Metering (Water / Gas / Heat), Consumer Remote Control with Segmented Display, Home Appliance User Interface Board, Portable Medical Monitoring Accessory, Automotive Body / Comfort Module.
Battery-Powered Sensor Node with LCD
The PIC16F1934-E/ML is a strong fit for battery-powered sensor nodes that need a small segment LCD readout. Its on-chip LCD driver supports up to 96 segments without an external controller, eliminating one IC from the BOM. nanoWatt XLP sleep currents below 1 uA extend coin-cell life, while the 32 MHz core gives enough headroom for periodic sensor reads, smoothing, and UART housekeeping. Typical supply 1.8-3.3 V from a CR2032 or 2xAA source.
Recommended
Industrial Metering (Water / Gas / Heat)
The PIC16F1934-E/ML suits residential and light-industrial metering thanks to its integrated LCD, EEPROM for tariff and calibration data, and 256B SRAM for rolling consumption windows. The E-grade -40C to +125C rating survives outdoor deployment in unheated enclosures. Its 10-bit ADC can digitize pulse-train flow sensors directly, while the EUSART reports to a concentrator over a wired M-Bus or wireless M-Bus link.
Recommended
Consumer Remote Control with Segmented Display
Low-cost universal remotes and small appliances benefit from the PIC16F1934-E/ML's tiny QFN-44 footprint, on-chip LCD, and 14-channel ADC for cap-touch or resistive scanning. The MSSP drives SPI peripherals such as an IR LED driver or sub-GHz transceiver, while 7 KB of Flash comfortably holds multi-protocol IR code libraries. Sleep currents in the sub-uA range preserve battery life between button events.
Recommended
Home Appliance User Interface Board
Washing machines, microwave ovens, and induction cooktops use the PIC16F1934-E/ML to drive a segmented LCD or LED display, scan keypads, and bridge to the main control MCU. The EUSART / MSSP links to the appliance's main controller over a simple UART or SPI harness, while the 32 MHz core handles debouncing and indicator logic without burdening the main MCU.
Recommended
Portable Medical Monitoring Accessory
Handheld medical accessories such as pill dispensers, peak-flow meters, and glucometer readouts are well served by the PIC16F1934-E/ML's low-power XLP modes, integrated LCD, and reliable EEPROM for patient-log retention. The 256B EEPROM can store up to ~250 log entries, while the 14-channel ADC supports multiple sensor inputs. The -40C to +125C extended grade handles storage and transport extremes.
Recommended
Automotive Body / Comfort Module
Within automotive body-electronics such as climate controls, seat-position memories, or rear-seat entertainment keypads, the PIC16F1934-E/ML's extended -40C to +125C rating and QFN-44 footprint give a small, rugged front-end controller. It can scan key matrices, drive a small segmented LCD, and report events to a central BCM over LIN or UART. Verify AEC-Q100 status with Microchip for the specific dash-line ordering code before final design-in.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1934-E/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1934-I/ML | PIC16F1934T-E/ML | PIC16F1936-I/ML | PIC16F1937-I/ML |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-QFN (8x8 mm) | 44-QFN (8x8 mm) | 44-QFN (8x8 mm) | 44-QFN (8x8 mm) | 44-QFN (8x8 mm) |
| Flash Memory | 7 KB | 7 KB | 7 KB | 14 KB | 14 KB |
| SRAM | 256 B | 256 B | 256 B | 512 B | 512 B |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B |
| Max CPU Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Temperature Grade | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) |
| Packaging Format | Tube | Tube | Tape and Reel | Tube | Tube |
Key Differentiators
- Highest temperature grade in the same die/package (vs PIC16F1934-I/ML)
- Lowest-cost 7 KB Flash option in the 44-QFN family (vs PIC16F1936-I/ML)
- Integrated hardware LCD driver up to 96 segments (vs PIC16F18855-I/ML)
Design Notes
Solder the central exposed pad (EP) of the 44-QFN package to a ground-plane pad of at least equal size, with multiple thermal vias tying it to inner ground layers. This both reduces thermal resistance and improves electrical reference for the ADC and LCD driver. Without proper EP soldering the device can overheat at the high end of the -40C to +125C range when the CPU is active for extended periods.
Place the VDDCORE decoupling capacitor (typically 0.1 uF) within 2-3 mm of the dedicated core-supply pin, plus 10 uF bulk on VDD. Segregate the LCD segment pins to one side of the package so the LCD bias traces do not cross noisy digital traces; this preserves display contrast and avoids jitter on the charge-pump output.
Do not leave the MCLR/RE3 pin floating - tie it to VDD through a 10 kohm pull-up so unexpected resets do not occur on noisy industrial rails. When using the ADC, ensure the band-gap reference is allowed the datasheet-specified settling time after enabling, or measured values will be low by tens of counts. Finally, lock the configuration bits in code to prevent accidental overwrite by a runaway programmer session.
Compliance Information
RoHS and lead-free per Microchip product page and DigiKey listing. -E grade indicates extended industrial / automotive temperature range but is not equivalent to AEC-Q100 qualification - confirm with Microchip for automotive dash-line orders. Halogen-free status not explicitly stated in verified data.
