PIC16LF1773-I/MX - 8-Bit XLP MCU, 7KB Flash, 32MHz, 28-UQFN | Microchip
MPN: PIC16LF1773-I/MX ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.95 | $1.95 |
| 10 | $1.76 | $17.60 |
| 100 | $1.45 | $145.00 |
| 500 | $1.21 | $605.00 |
| 1,000 | $0.99 | $990.00 |
PIC16LF1773-I/MX Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash), data memory (RAM), and peripherals such as timers, ADC/DAC, communication interfaces, and I/O onto one die. The PIC16LF1773 belongs to the PIC16 mid-range family (8-bit Harvard architecture) within the broader PIC® microcontroller hierarchy, which sits under the Microchip 8-bit portfolio alongside PIC10/12/14/18 series. It is most commonly used where deterministic interrupt response, low sleep current, and rich on-chip analog peripherals are required.
Key differentiating features include an integrated 10-bit DAC, high-speed comparators, operational amplifiers (op amps), zero-crossing detectors (ZCD), programmable ramp generator (PRG), 10/16-bit PWMs with independent time bases, and a 100 mA high-current I/O capability. It also includes an on-chip 32 MHz internal oscillator, peripheral pin select (PPS) for flexible signal routing, and the standard PIC16 communication set (SPI, I²C, and EUSART). Compared with earlier PIC16F generations, the 1773 family concentrates more analog and PWM intelligence on-chip, reducing external component count for LED lighting, power-conversion, and motor-control loops.
Typical applications include LED lighting and drivers, switched-mode power supplies, battery chargers, BLDC/PMSM motor control (sensorless via BEMF/ZCD), HVAC fan control, digital power conversion, and general-purpose sensor conditioning with on-chip op amps. The integrated op amps and DAC enable closed-loop control without external signal-chain ICs.
When designing with this part, ensure the UQFN-28 exposed pad is soldered to the PCB ground plane for thermal dissipation and electrical performance. Decouple VDD with a 0.1 µF ceramic capacitor placed within 3 mm of the supply pin, and configure unused I/O as outputs low to minimize current leakage. PPS routing requires careful review of the device datasheet to avoid pin-function conflicts.
Drop-in alternatives for PIC16LF1773-I/MX — 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 PIC16LF1773-I/MX (same form factor and footprint) — differing in Comparators, Package, Core Architecture, Operating Voltage Range, Peripheral Pin Select (PPS).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1773-I/MX
✅ Drop-In✓ In Stock
$1.49 / Unit
View Datasheet →PIC16LF1776-I/MX
✅ Drop-In✓ In Stock
$1.38 / Unit
View Datasheet →PIC16LF1779-I/MX
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1769-I/MX
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16LF1768-I/MX
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16LF1773-I/MX Maximum Ratings & Electrical Characteristics
| Core | PIC16 8-bit Harvard RISC |
| Family | PIC® XLP™ 16F |
| Sub-family | PIC16LF177x |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data Memory (RAM) | 512 B |
| CPU Speed (max) | 32 MHz |
| Operating Voltage Range | 1.8 V to 3.6 V (LF) |
| Package | 28-pin UQFN (6x6 mm) with exposed pad |
| Mounting Type | Surface Mount |
| Temperature Grade | Industrial -40 °C to +85 °C |
| DAC | 10-bit |
| Comparators | High-Speed (HS) comparators integrated |
| Op Amps | On-chip operational amplifiers |
| Zero-Cross Detector (ZCD) | Yes |
| Programmable Ramp Generator (PRG) | Yes |
| PWM | 10/16-bit with independent time bases |
| I/O Drive | 100 mA high-current capable |
| Peripheral Pin Select (PPS) | Yes |
| Communication | SPI, I²C, EUSART |
| Internal Oscillator | 32 MHz (on-chip) |
| RoHS Status | Compliant |
PIC16LF1773-I/MX Pin Configuration
| Pin 1 | RA5 — General-purpose I/O / analog input |
| Pin 2 | RA4 — General-purpose I/O / analog input |
| Pin 3 | RA3 — General-purpose I/O / analog input / MCLR |
| Pin 4 | RA2 — General-purpose I/O / analog input |
| Pin 5 | RA1 — General-purpose I/O / analog input / DAC output |
| Pin 6 | RA0 — General-purpose I/O / analog input / DAC output |
| Pin 7 | VSS — Ground |
| Pin 8 | RA7 — General-purpose I/O / oscillator |
| Pin 9 | RA6 — General-purpose I/O / oscillator |
| Pin 10 | RC0 — General-purpose I/O / analog input |
| Pin 11 | RC1 — General-purpose I/O / analog input |
| Pin 12 | RC2 — General-purpose I/O / analog input / op-amp output |
| Pin 13 | RC3 — General-purpose I/O / analog input / op-amp output |
| Pin 14 | RC4 — General-purpose I/O / analog input |
| Pin 15 | RC5 — General-purpose I/O / analog input |
| Pin 16 | RC6 — General-purpose I/O / TX/CK |
| Pin 17 | RC7 — General-purpose I/O / RX/DT |
| Pin 18 | RB7 — General-purpose I/O / analog input / ZCD |
| Pin 19 | RB6 — General-purpose I/O / analog input |
| Pin 20 | RB5 — General-purpose I/O / analog input / PWM |
| Pin 21 | RB4 — General-purpose I/O / analog input / PWM |
| Pin 22 | RB3 — General-purpose I/O / analog input / PWM |
| Pin 23 | RB2 — General-purpose I/O / analog input / PWM |
| Pin 24 | RB1 — General-purpose I/O / analog input / PWM |
| Pin 25 | RB0 — General-purpose I/O / analog input / PWM |
| Pin 26 | VDD — Positive supply voltage |
| Pin 27 | VDDIO2 — I/O supply voltage 2 (PPS-controlled I/O bank) |
| Pin 28 | EP — Exposed pad - thermal/electrical connection to ground (per datasheet) |
Typical Applications
PIC16LF1773-I/MX is suitable for 7 applications: LED Lighting Drivers, Switched-Mode Power Supplies (SMPS), BLDC / PMSM Motor Control, Battery Chargers & Battery Management, HVAC Fan Control, Sensor Signal Conditioning, General-Purpose 8-bit Embedded Control.
LED Lighting Drivers
The PIC16LF1773-I/MX fits LED lighting driver designs because its integrated 10-bit DAC, 10/16-bit PWMs, high-speed comparators, and programmable ramp generator (PRG) implement dimming and constant-current loops without external analog ICs. With 32 MHz CPU headroom and 7 KB Flash, the MCU handles DALI or DMX-style protocol stacks plus closed-loop current regulation. The 100 mA high-current I/O directly drives FET gates or LED strings, and PPS reassigns peripheral pins to match PCB layout. LF 1.8–3.6 V operation suits 2-cell battery or 3.3 V regulated rails common in architectural and portable luminaires.
Recommended
Switched-Mode Power Supplies (SMPS)
For switched-mode power supplies, the PIC16LF1773-I/MX offers on-chip op amps for current sensing, HS comparators for cycle-by-cycle current limiting, and ZCD for boundary-conduction-mode PFC. The 16-bit PWM with independent time bases supports multi-phase digital loop control at switching frequencies well above 100 kHz, while the 32 MHz core runs digital compensators. The 100 mA I/O directly drives low-side MOSFETs in sub-100 W applications, and PPS keeps PCB routing flexible. LF operation matches 3.3 V digital supply rails for IoT- and appliance-class adapters.
Recommended
BLDC / PMSM Motor Control
In BLDC or PMSM motor control, the PIC16LF1773-I/MX integrates the analog signal chain needed for sensorless BEMF detection: op amps condition phase voltages, ZCD detects zero-cross events, and the programmable ramp generator synthesizes commutation timing. Six 16-bit PWMs drive a 3-phase inverter directly with dead-band control, while the 32 MHz core runs a field-oriented-control or trapezoidal commutation algorithm. 7 KB Flash holds a small FOC library and 512 B RAM keeps a tight state machine. The 28-UQFN MX package fits small form-factor fans, pumps, and appliance drives.
Recommended
Battery Chargers & Battery Management
Battery charger designs benefit from the PIC16LF1773-I/MX's 10-bit DAC for programmable charge current/voltage references and op amps for current-shunt sensing. The 16-bit PWM provides accurate charge-phase control, and nanoWatt XLP keeps sleep current low between charging events, critical for always-on solar or USB-C backup applications. The 1.8–3.6 V LF operation matches single-cell Li-ion / LiFePO4 packs directly. PPS allows I²C or SMBus commutation for host monitoring without rigid pin allocation.
Recommended
HVAC Fan Control
HVAC fan control applications use the PIC16LF1773-I/MX to drive multi-speed brushless fans with closed-loop RPM regulation. ZCD and op amps handle BEMF sensing, 16-bit PWM provides smooth speed control, and the PRG assists soft-start ramp profiles to reduce acoustic noise. 7 KB Flash holds fan-curve lookup tables and fault-handling routines, while 100 mA I/O drives gate signals directly without external drivers. LF 1.8–3.6 V operation lets the MCU share the fan's 12 V-derived 3.3 V rail.
Recommended
Sensor Signal Conditioning
Sensor signal-conditioning nodes use the PIC16LF1773-I/MX to amplify, filter, and digitize analog sensor outputs in a single chip. On-chip op amps buffer strain-gauge, thermocouple, or thermistor bridges, HS comparators generate interrupts at threshold crossings, and the 10-bit DAC provides excitation or offset trimming. The 32 MHz core runs calibration and linearization routines. nanoWatt XLP and LF operation extend life on coin-cell or energy-harvested supplies, ideal for IoT edge nodes.
Recommended
General-Purpose 8-bit Embedded Control
For general-purpose 8-bit control, the PIC16LF1773-I/MX provides a balanced 32 MHz CPU, 7 KB Flash, 512 B RAM, PPS, and the full PIC16 peripheral set (SPI, I²C, EUSART) in the compact 28-UQFN MX package. Designers gain flexibility to drive user interfaces, manage peripherals, and run a real-time scheduler in appliances, consumer electronics, and small industrial controllers. The exposed-pad package keeps thermal performance adequate at 32 MHz with VDD up to 3.6 V.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1773-I/MX — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1773-I/MX | PIC16LF1776-I/MX | PIC16LF1779-I/MX | PIC16LF1769-I/MX | PIC16LF1768-I/MX |
|---|---|---|---|---|---|---|
| Package | 28-UQFN (6x6 mm) MX | 28-UQFN (6x6 mm) MX - same | 28-UQFN (6x6 mm) MX - same | 28-UQFN (6x6 mm) MX - same | 28-UQFN (6x6 mm) MX - same | 28-UQFN (6x6 mm) MX - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Operating Voltage | 1.8 V to 3.6 V (LF) | 4.0 V to 5.5 V (F) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) |
| Max CPU Speed | 32 MHz | 32 MHz - same | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Temperature Grade | Industrial -40 to +85 C | Industrial -40 to +85 C | Industrial -40 to +85 C | Industrial -40 to +85 C | Industrial -40 to +85 C | Industrial -40 to +85 C |
Key Differentiators
- Wider analog integration on-chip (vs PIC16LF1769-I/MX)
- Lower-voltage LF operating range (vs PIC16F1773-I/MX)
- 16-bit PWM with independent time bases (vs PIC16LF1768-I/MX)
Design Notes
Estimated: the 28-UQFN MX exposed thermal pad on the PIC16LF1773-I/MX must be soldered to a continuous ground copper plane for both electrical reference and heat dissipation. Use an array of thermal vias (4–8 vias, 0.3 mm drill, 0.6 mm pitch) under the EP to provide a low-impedance thermal path to inner PCB ground planes. Per Microchip UQFN PCB guidelines, this also reduces die stress during reflow.
Place a 0.1 µF ceramic decoupling capacitor within 3 mm of each VDD/VDDIO2 pin, and add a 1 µF bulk capacitor on the main VDD rail. For noise-sensitive analog blocks (op amps, comparators, DAC), place an additional 0.01 µF cap adjacent to the AVdd pin if your board splits analog and digital VDD. This minimizes digital switching noise coupling into the analog signal chain.
Configure all unused I/O pins as outputs driving low to minimize current leakage in Sleep mode. When using Peripheral Pin Select (PPS), always verify the chosen input/output mapping in the PPS configuration register against the datasheet pinout table to avoid silent pin-function conflicts. Also confirm the MCLR pin (RA3) is pulled high through a 10 kΩ resistor unless reset is intentionally disabled in configuration bits.
Keep analog traces (op-amp inputs, comparator inputs, DAC output) short and routed away from high-current traces (100 mA I/O and PWM outputs) by at least 3 mm or use a ground guard trace. For PWM-driven FET gates, use a 10–47 Ω series gate resistor to dampen ringing. The PPS feature should not be relied on to fix post-layout signal-integrity issues - plan pin functions early in the schematic phase.
Compliance Information
RoHS and lead-free per Microchip product page (Microchip LF PIC16 family ships Pb-free, RoHS compliant). Not AEC-Q100 qualified; for automotive applications, refer to Microchip's automotive-grade PIC16F1773 family variants.
