PIC16LF1933-I/MV - 8-bit 32MHz XLP MCU 7KB Flash | Microchip
MPN: PIC16LF1933-I/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.4 | $2.40 |
| 10 | $2.16 | $21.60 |
| 100 | $1.85 | $185.00 |
| 500 | $1.62 | $810.00 |
| 1,000 | $1.45 | $1,450.00 |
PIC16LF1933-I/MV Overview
A PIC microcontroller is a microcontroller unit (MCU) based on Microchip's proprietary PIC (Peripheral Interface Controller) RISC architecture, widely used in embedded systems for sensor interfacing, control loops, and human-machine interfaces. The PIC16 family sits within the broader taxonomy of 8-bit microcontrollers, which represent the entry-level tier of MCU complexity versus 16-bit (MSP430, PIC24) and 32-bit (ARM Cortex-M) cores. The PIC16LF1933 specifically targets low-power applications needing integrated peripherals without external component count.
Key differentiating features include a 60-segment LCD driver, integrated capacitive mTouch sensing module, internal 32 MHz oscillator, integrated temperature indicator, and 12-bit ADC with computation. Communication peripherals include I2C, SPI, and EUSART with auto-baud, while motor-control support comes from 3 Enhanced CCP and 2 standard CCP modules. The 28-pin UQFN package provides 25 I/O pins with individual pull-ups, interrupt-on-change, and programmable weak pull-ups.
The device uses an enhanced mid-range 14-bit instruction set with 49 instructions and 16-level hardware stack, providing deterministic 200ns instruction execution. The XLP technology adds deep sleep, watchdog, and RTCC modes enabling years of battery life in IoT sensor nodes. Power-on reset, brown-out detect, and an extended watchdog timer with dedicated on-chip oscillator add to system robustness.
Typical applications include battery-powered IoT sensor nodes, LCD-based consumer appliances, capacitive touch human-machine interfaces, low-power remote controls, and industrial metering equipment. The combination of integrated LCD driver and nanoWatt XLP makes it particularly suitable for battery-powered thermostats, blood pressure monitors, and electronic shelf labels. Compared to discrete logic, this MCU reduces BOM count by integrating oscillator, voltage reference, ADC, and LCD bias generation.
Design consideration: the 28-UQFN package has an exposed thermal pad that must be soldered to the PCB ground pour for proper thermal and electrical performance. For lowest sleep current, disable all unused peripherals via the PMD registers and use the deep sleep mode with RTCC running from a 32 kHz external crystal.
Drop-in alternatives for PIC16LF1933-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 PIC16LF1933-I/MV (same form factor and footprint) — differing in Package, I/O Pins, Core Architecture, ADC, LCD Driver.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1933-I/MV
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1933T-I/MV
✅ Drop-In✓ In Stock
$1.52 / Unit
View Datasheet →PIC16LF1933-E/MV
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →PIC16LF1933-I/SS
✅ Drop-In✓ In Stock
$1.3 / Unit
View Datasheet →PIC16LF1933-I/MV Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 Enhanced Mid-Range 8-bit RISC |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data RAM | 256 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Instruction Execution Time | 200 ns at 8 MHz (single cycle) |
| Operating Voltage Range | 1.8 V to 3.6 V |
| I/O Pins | 25 |
| ADC | 11-channel 10-bit |
| LCD Driver | 60 segments (4 common mode) |
| Communication Peripherals | 1x I2C/SPI, 1x EUSART (auto-baud), 1x SPI |
| PWM Modules | 3x ECCP + 2x CCP |
| Comparators | 2x |
| Capacitive Touch Module | mTouch integrated |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 28-pin UQFN (4x4 mm) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16LF1933-I/MV Pin Configuration
| Pin 1 | RA0/AN0/CPS0/SEG12 — Bidirectional I/O with ADC, mTouch, and LCD segment |
| Pin 2 | RA1/AN1/CPS1/SEG7 — Bidirectional I/O with ADC, mTouch, and LCD segment |
| Pin 3 | RA2/AN2/CPS2/CVREF/COM2 — Bidirectional I/O with ADC, mTouch, CVREF, and LCD common |
| Pin 4 | RA3/AN3/CPS3/COM3 — Bidirectional I/O with ADC, mTouch, and LCD common |
| Pin 5 | RA4/T0CKI/CPS4/SEG4 — Bidirectional I/O with Timer0 clock and LCD segment |
| Pin 6 | RA5/AN4/CPS5/SEG5 — Bidirectional I/O with ADC, mTouch, and LCD segment |
| Pin 7 | RA6/OSC2/CLKOUT — I/O or oscillator output |
| Pin 8 | RA7/OSC1/CLKIN — I/O or oscillator input |
| Pin 9 | VDD — Positive power supply |
| Pin 10 | VSS — Ground reference |
| Pin 11 | RC0/T1OSO/T1CKI/SCL/SCK — I/O with Timer1 oscillator, I2C clock, SPI clock |
| Pin 12 | RC1/T1OSI/CCP2/SDA/SDI — I/O with Timer1 oscillator, CCP, I2C data, SPI data |
| Pin 13 | RC2/CCP1/SDO — I/O with CCP and SPI data out |
| Pin 14 | RC3/SEG15/SCK/SCL — I/O with LCD segment, SPI/I2C clock |
| Pin 15 | RC4/SEG14/SDI/SDA — I/O with LCD segment, SPI/I2C data |
| Pin 16 | RC5/SEG13/SDO — I/O with LCD segment and SPI data out |
| Pin 17 | RC6/TX/CK/SEG26/AN6 — I/O with EUSART, ADC, and LCD segment |
| Pin 18 | RC7/RX/DT/SEG27/AN7 — I/O with EUSART, ADC, and LCD segment |
| Pin 19 | RD0/CPS16/COM0 — I/O with mTouch and LCD common |
| Pin 20 | RD1/CPS17/COM1 — I/O with mTouch and LCD common |
| Pin 21 | RD2/CPS18/CCP3 — I/O with mTouch and CCP3 |
| Pin 22 | RD3/CPS19/CCP4 — I/O with mTouch and CCP4 |
| Pin 23 | RD4/CPS20/CCP5 — I/O with mTouch and CCP5 |
| Pin 24 | RD5/CPS21/P1B/ECCPS — I/O with mTouch, PWM, and ECCP |
| Pin 25 | RD6/CPS22/P1C — I/O with mTouch and PWM |
| Pin 26 | RD7/CPS23/P1D — I/O with mTouch and PWM |
| Pin 27 | RE3/MCLR/VPP — Master Clear reset or programming voltage input |
| Pin 28 | EP — Exposed thermal pad - connect to VSS |
Typical Applications
PIC16LF1933-I/MV is suitable for 7 applications: Battery-Powered IoT Sensor Nodes, LCD-Based Consumer Appliances, Capacitive Touch HMI Panels, Industrial Metering Equipment, Low-Power Remote Controls, Electronic Shelf Labels and Signage, Medical Portable Monitoring Devices.
Battery-Powered IoT Sensor Nodes
The PIC16LF1933-I/MV is an ideal fit for battery-powered IoT sensor nodes due to its nanoWatt XLP sleep current below 100 nA with RTCC running, 1.8V-3.6V operation matching single Li-coin cells, and 32 MHz core that wakes rapidly to process sensor readings. The 11-channel 10-bit ADC interfaces directly with temperature, humidity, and light sensors, while the integrated mTouch module eliminates the need for external capacitive sensing ICs. Compared to discrete 8-bit MCUs without XLP, this part achieves years of battery life on a single CR2032 in typical duty-cycled applications like wireless HVAC sensors or environmental monitors.
Recommended
LCD-Based Consumer Appliances
The PIC16LF1933-I/MV's integrated 60-segment LCD driver eliminates the need for an external LCD controller chip, reducing BOM cost and PCB area in microwave ovens, washing machines, coffee makers, and similar white goods. The 4-common multiplex mode supports up to 15-segment by 4-digit or 60-segment displays typical in appliance UIs. With 7KB Flash accommodating complex state machines and 256B EEPROM storing user settings through power cycles, this MCU handles the full appliance controller role. The 32 MHz core drives responsive button scanning via the mTouch capacitive module.
Recommended
Capacitive Touch HMI Panels
For human-machine interface panels with capacitive touch buttons and sliders, the PIC16LF1933-I/MV integrates Microchip's mTouch sensing module directly, removing the need for an external touch IC. The 25 I/O pins support up to 12 touch channels plus LED drivers, while the 32 MHz core executes touch scanning algorithms at high update rates for responsive feel. Low-power deep sleep between touch events draws under 100 nA, suitable for battery-powered remote controls and portable instruments. Combined with the LCD driver, a complete touch-and-display UI fits in one chip.
Recommended
Industrial Metering Equipment
The PIC16LF1933-I/MV serves well in electricity, water, and gas meters requiring accurate analog measurement and LCD readout. The 10-bit ADC with internal voltage reference handles sensor signal conditioning, while the integrated temperature indicator enables temperature compensation for accuracy across -40C to +85C industrial range. EEPROM stores calibration constants and consumption history across power cycles. The wide 1.8V-3.6V supply range accommodates single-cell Li battery backup, and XLP sleep modes enable 10+ year battery life in unattended metering deployments.
Recommended
Low-Power Remote Controls
Universal remote controls, key fobs, and wireless sensor transmitters benefit from the PIC16LF1933-I/MV's combination of mTouch capacitive buttons, low sleep current, and small 28-UQFN (4x4 mm) package. The 32 MHz core executes IR or RF protocol encoding rapidly before returning to deep sleep, conserving battery life across years of standby. Seven KB Flash stores multiple device codes and learning-mode firmware. The 60-segment LCD can drive a small status display in advanced remotes, and 25 I/O support matrix-scanned button arrays plus LED feedback.
Recommended
Electronic Shelf Labels and Signage
Wireless electronic shelf labels (ESL) in retail environments leverage the PIC16LF1933-I/MV's integrated LCD driver, low-power XLP sleep modes, and small footprint. The 60-segment LCD capability drives price/label displays, while sub-microamp deep sleep current enables 5+ year battery life on coin cells in typical retail update scenarios. The 32 MHz core wakes periodically to receive RF updates via EUSART-connected transceivers. With 256B EEPROM storing display templates, the system minimizes wireless data traffic, extending battery life across thousands of shelf-label nodes.
Recommended
Medical Portable Monitoring Devices
The PIC16LF1933-I/MV fits portable medical monitoring devices such as digital thermometers, blood pressure monitors, and pulse oximeter secondary displays where low power, integrated LCD, and reliable operation are critical. The industrial -40C to +85C temperature range supports various clinical and home-use environments. The 10-bit ADC interfaces with sensor front-ends, while the integrated temperature indicator provides on-chip calibration reference. The combination of XLP technology and integrated peripherals reduces bill-of-materials cost versus discrete component designs.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1933-I/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1933-I/MV | PIC16LF1933T-I/MV | PIC16LF1933-E/MV | PIC16LF1933-I/SS |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-UQFN (4x4 mm) | 28-UQFN (4x4 mm) - same | 28-UQFN (4x4 mm) - same | 28-UQFN (4x4 mm) - same | 28-SSOP - different |
| Operating Voltage | 1.8V to 3.6V | 2.3V to 5.5V | 1.8V to 3.6V - same | 1.8V to 3.6V - same | 1.8V to 3.6V - same |
| Flash Memory | 7 KB | 7 KB - same | 7 KB - same | 7 KB - same | 7 KB - same |
| RAM | 256 bytes | 256 bytes - same | 256 bytes - same | 256 bytes - same | 256 bytes - same |
| Maximum CPU Speed | 32 MHz | 32 MHz - same | 32 MHz - same | 32 MHz - same | 32 MHz - same |
| Operating Temperature | -40C to +85C | -40C to +85C - same | -40C to +85C - same | -40C to +125C (extended) | -40C to +85C - same |
| Sleep Current (XLP) | <100 nA typical | Higher than LF variant | <100 nA - same | <100 nA - same | <100 nA - same |
| LCD Driver | 60 segments | 60 segments - same | 60 segments - same | 60 segments - same | 60 segments - same |
Key Differentiators
- Integrated 60-segment LCD driver eliminates external LCD controller (vs PIC16F1825-I/SL)
- 3 ECCP + 2 CCP PWM modules support full-bridge motor control (vs PIC16LF1936)
- Wider 1.8V-3.6V supply range matches single Li-coin battery designs (vs PIC16F1933-I/MV)
- Integrated mTouch capacitive sensing module (vs PIC16LF1906-I/SP)
Design Notes
For lowest sleep current on the PIC16LF1933-I/MV, disable all unused peripherals via the PMD (Peripheral Module Disable) registers before entering Sleep. According to Microchip datasheet 41574G, XLP sleep current can drop below 100 nA with RTCC running from a 32 kHz external crystal and all peripherals disabled. Use the deep sleep mode (DPSLP) for maximum power savings, with wake-up via RTCC, watchdog timer, or external interrupt. Avoid leaving floating analog inputs - they can leak current; configure unused ADC channels as digital outputs.
The 28-UQFN package features an exposed thermal pad (pin 28 EP) that MUST be soldered to a PCB ground pour for proper thermal and electrical performance. Use an array of thermal vias (typically 9-16 vias at 0.3 mm drill) connecting the pad to the inner/outer ground plane. Per IPC-2221 design guidelines, the UQFN pad should occupy at least 50% of the package footprint area for adequate heat dissipation, especially when the LCD driver draws bias current at high segment counts.
When migrating between PIC16LF1933-I/MV and PIC16F1933-I/MV, verify that the supply voltage does not fall below 2.3V on the F variant during brown-out or battery droop. The LF variant tolerates down to 1.8V but the F variant will reset. Use the BOR (Brown-Out Reset) module configured for the appropriate voltage threshold. Also note the configuration word differences - the LF and F variants have separate configuration bits for the voltage regulator and ADC reference selection that must be set correctly during programming.
Keep the external 32.768 kHz watch crystal traces short and symmetric, surrounded by a ground guard ring to minimize noise coupling. For high-frequency clock operation, place the decoupling capacitors (100 nF ceramic + 10 uF bulk) as close as possible to the VDD/VSS pins. The PIC16LF1933-I/MV's analog and digital sections share the supply pins, so star-ground topology with separate analog/digital ground returns minimizes ADC noise. Place the 10 uF VDD bulk capacitor within 5 mm of the MCU.
Compliance Information
RoHS and REACH compliant per Microchip product page. Standard 8-bit MCU without AEC-Q100 automotive qualification - choose PIC16LF1933-E/MV for extended temperature automotive applications. Lead-free and halogen-free per Microchip environmental compliance documentation.
