PIC16LF1773-I/SO - 8-Bit MCU, 32MHz, 7KB Flash, 28-SOIC | Microchip
MPN: PIC16LF1773-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.92 | $2.92 |
| 10 | $2.63 | $26.30 |
| 100 | $2.34 | $234.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.78 | $1,780.00 |
PIC16LF1773-I/SO Overview
The PIC® XLP™ 16F family belongs to the broader category of 8-bit microcontrollers, which are reduced instruction set computer (RISC) single-chip controllers used in embedded systems. Within the Microchip PIC ecosystem the 8-bit PIC16 line targets low-power, cost-sensitive, peripheral-rich designs and is positioned between the smaller PIC10/12 families and the higher-performance PIC18 and PIC24/dsPIC lines. The PIC16LF1773 specifically belongs to the PIC16(L)F177x sub-family, which integrates a high level of analog and digital peripherals for applications such as lighting, power supplies, battery charging, and motor control.
Key features include: 32MHz operation from a 3V supply (extended LF operating range), 4KB of Flash, 512 bytes of SRAM, integrated 10-bit ADC, integrated op-amps, high-performance 10-bit DAC, comparators, and Microchip's XLP ultra-low-power technology aimed at reducing active and sleep current consumption. The 28-SOIC package offers a wide-body 7.50mm form factor that is easy to hand-solder and breadboard-prototype, but with a pin pitch suited to moderate-density surface-mount assembly.
Architecturally, the PIC16LF1773 uses a Harvard RISC architecture with separate program and data buses, an 8-bit ALU, a hardware multiplier-free instruction set optimized for C and assembly efficiency, and a two-stage pipeline that supports most instructions in a single clock cycle. The 'LF' suffix denotes the low-voltage / low-Flash variant, and the 'I' temperature grade indicates an industrial operating range of -40°C to +85°C.
Typical applications include LED lighting control, switch-mode power supply (SMPS) digital control, battery charging circuits, sensor signal conditioning, and general-purpose low-power embedded control. The combination of op-amps, comparators, PWM, and DAC in one die allows a single MCU to close feedback loops without external analog ICs.
When designing with this part, place a 100nF decoupling capacitor within 5 mm of the VDD pin and a 10 µF bulk capacitor near the regulator output, and reserve a dedicated analog VDD pin pair (AVDD/AVSS) for the ADC and reference even if some analog pins are unused. Unused digital I/O should be configured as outputs low to minimize transient current draw in deep sleep.
This page synthesizes up-to-date distributor pricing, drop-in alternatives, and practical design notes that complement, not duplicate, the Microchip datasheet.
Drop-in alternatives for PIC16LF1773-I/SO — 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/SO (same form factor and footprint) — differing in DAC, Operating Temperature, Package, ADC, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1776-I/SO
✅ Drop-In✓ In Stock
$1.74 / Unit
View Datasheet →PIC16LF1778-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1779-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1773-I/SP
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1773-I/SO
✅ Drop-In✓ In Stock
$1.85 / Unit
View Datasheet →PIC16LF1769-I/ML
✅ Drop-In✓ In Stock
$1.65 / Unit
View Datasheet →PIC16LF1773-I/SO Maximum Ratings & Electrical Characteristics
| Product Type | 8-Bit RISC Microcontroller |
| CPU Core | PIC16 |
| Family | PIC® XLP™ 16F |
| Maximum CPU Frequency | 32 MHz |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data Memory (SRAM) | 512 B |
| Operating Temperature | -40 °C to +85 °C (Industrial, 'I' grade) |
| DAC | 10-bit (per Mouser listing) |
| Package | 28-pin SOIC (SO), 0.295" / 7.50 mm body width |
| Mounting Type | Surface Mount |
| Technology | CMOS |
PIC16LF1773-I/SO Pin Configuration
| Pin 1 | RA1/AN1/CPS1 — Bidirectional I/O; analog input channel 1; capacitive sense input 1 |
| Pin 2 | RA2/AN2 — Bidirectional I/O; analog input channel 2 |
| Pin 3 | RA3/AN3/VREF+ — Bidirectional I/O; analog input channel 3; ADC voltage reference plus |
| Pin 4 | RA4/AN4 — Bidirectional I/O; analog input channel 4 |
| Pin 5 | RA5/AN5 — Bidirectional I/O; analog input channel 5 |
| Pin 6 | RE3 — Input-only pin (MCLR alternative) |
| Pin 7 | RA7/OSC1/CLKIN — Bidirectional I/O; external clock input or crystal connection 1 |
| Pin 8 | RA6/OSC2/CLKOUT — Bidirectional I/O; crystal connection 2; clock output |
| Pin 9 | RC3 — Bidirectional I/O |
| Pin 10 | RC4 — Bidirectional I/O |
| Pin 11 | RC5 — Bidirectional I/O |
| Pin 12 | RC6 — Bidirectional I/O |
| Pin 13 | RC7 — Bidirectional I/O |
| Pin 14 | AVDD — Analog positive supply |
| Pin 15 | AVSS — Analog ground reference |
| Pin 16 | VDD — Digital positive supply |
| Pin 17 | VSS — Digital ground |
| Pin 18 | RB0 — Bidirectional I/O; interrupt-on-change |
| Pin 19 | RB1 — Bidirectional I/O; interrupt-on-change |
| Pin 20 | RB2 — Bidirectional I/O; interrupt-on-change |
| Pin 21 | RB3 — Bidirectional I/O; interrupt-on-change |
| Pin 22 | RB4 — Bidirectional I/O; interrupt-on-change |
| Pin 23 | RB5 — Bidirectional I/O; interrupt-on-change |
| Pin 24 | RB6/ICSPCLK — Bidirectional I/O; ICSP clock |
| Pin 25 | RB7/ICSPDAT — Bidirectional I/O; ICSP data |
| Pin 26 | RE0 — Bidirectional I/O |
| Pin 27 | RE1 — Bidirectional I/O |
| Pin 28 | RE2 — Bidirectional I/O |
Typical Applications
PIC16LF1773-I/SO is suitable for 6 applications: LED Lighting Control, Switch-Mode Power Supply (SMPS) Digital Control, Battery Charging Management, Sensor Signal Conditioning, DC Motor Control (Brushed DC and Stepper), General-Purpose Low-Power Embedded Control.
LED Lighting Control
The PIC16LF1773-I/SO is well suited for LED lighting drivers because it integrates multiple 16-bit PWM channels, high-speed comparators, and op-amps that can close the feedback loop around a buck or boost constant-current stage without external analog ICs. The 32 MHz CPU bandwidth is more than sufficient to run a state-space dimming algorithm, while the PIC® XLP™ technology keeps standby consumption low enough for always-on fixture designs. Designers can implement analog-style dimming with logarithmic correction, color-temperature mixing, and DALI or 0-10V control using only the MCU plus a few passives.
Recommended
Switch-Mode Power Supply (SMPS) Digital Control
For digital SMPS control, the PIC16LF1773-I/SO offers hardware 16-bit PWMs with adjustable dead-band, high-speed comparators that can trigger ADC sampling in sub-microsecond time, and integrated op-amps that condition current-sense signals before digitizing. The 32 MHz core can execute a voltage-mode or average-current-mode control loop at 100 kHz or higher switching frequency while leaving headroom for housekeeping. The 7 KB Flash holds typical firmware for PFC + LLC or PFC + flyback topologies used in adapters and LED drivers.
Recommended
Battery Charging Management
Battery charging applications benefit from the PIC16LF1773-I/SO's on-chip 10-bit DAC (which can be repurposed as a programmable reference for the charging current loop), comparator-based termination detection, and the wide operating temperature range of the 'I' grade. The PIC® XLP™ sleep currents in the nanoWatt range enable always-on chargers that draw minimal quiescent current when the battery is full. Li-ion, lead-acid, and NiMH charging profiles can be implemented in firmware with adaptive CC/CV transitions, temperature-qualified current limits, and/or LED status indication.
Recommended
Sensor Signal Conditioning
The PIC16LF1773-I/SO is a strong fit for sensor signal conditioning because the on-die op-amps can buffer and amplify low-level bridge, thermocouple, or photodiode signals before the 10-bit ADC samples them, eliminating external instrumentation amplifiers. The high-speed comparators enable threshold-based events to interrupt the CPU without polling, while the XLP wake-on-touch or wake-on-comparator modes minimize sleep consumption. The 512-byte SRAM and 7 KB Flash support lightweight sensor-fusion algorithms and on-board calibration tables for production-line trimming.
Recommended
DC Motor Control (Brushed DC and Stepper)
For small brushed-DC or stepper motor control, the PIC16LF1773-I/SO drives H-bridge FETs directly through its PWM and GPIO, while the integrated op-amps condition current-sense shunt signals for closed-loop torque or speed regulation. With 32 MHz CPU bandwidth the controller can handle trapezoidal commutation, soft-start ramps, and stall-detection in a 1 kHz update loop. The PIC® XLP™ low-power capabilities extend to portable and battery-powered handheld tools, where quiescent current between commands must be in the microamp range.
Recommended
General-Purpose Low-Power Embedded Control
The PIC16LF1773-I/SO is appropriate for general-purpose embedded control tasks such as appliance user interfaces, HVAC controls, and small automation tiles where up to seven thousand words of Flash are sufficient. The 28-SOIC package is convenient for hand-prototyping and rework, the -40 °C to +85 °C industrial temperature grade suits factory and unconditioned environments, and the XLP sleep currents support product standby regulations such as ENERGY STAR. Each unit integrates enough peripherals to replace a discrete op-amp + comparator + timer board in many cost-sensitive designs.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1773-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1776-I/SO | PIC16LF1778-I/SO | PIC16LF1779-I/SO | PIC16LF1773-I/SP | PIC16F1773-I/SO |
|---|---|---|---|---|---|---|
| Package | 28-SOIC (SO, 0.295" 7.50mm) | 28-SOIC (SO, 0.295" 7.50mm) - same | 28-SOIC (SO, 0.295" 7.50mm) - same | 28-SOIC (SO, 0.295" 7.50mm) - same | 28-PDIP (SP) - through-hole, pin-compatible | 28-SOIC (SO, 0.295" 7.50mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU | PIC16, 8-bit, 32 MHz max | PIC16, 8-bit, 32 MHz max - same | PIC16, 8-bit, 32 MHz max - same | PIC16, 8-bit, 32 MHz max - same | PIC16, 8-bit, 32 MHz max - same | PIC16, 8-bit, 32 MHz max - same |
| Program Flash | 7 KB | 28 KB (+300%) | 28 KB (+300%) | 28 KB (+300%) | 7 KB - same | 7 KB - same |
| Variant Label | LF (low-voltage, XLP) | LF (low-voltage, XLP) - same | LF (low-voltage, XLP) - same | LF (low-voltage, XLP) - same | LF - same | F (full VDD range) - diff |
| Temperature Grade | Industrial -40 to +85 °C | Industrial -40 to +85 °C - same | Industrial -40 to +85 °C - same | Industrial -40 to +85 °C - same | Industrial -40 to +85 °C - same | Industrial -40 to +85 °C - same |
| Peripherals (op-amps, comparators) | Multiple op-amps, comparators, 10-bit DAC (per family) | Similar set, more channels | More PWM/ADC channels | More op-amps/comparators | Same - identical die | Same - identical die |
Key Differentiators
- On-die op-amps, comparators, and 10-bit DAC in an 8-bit MCU (vs PIC16LF1703-I/ML)
- Up to 28 KB Flash drop-in upgrade in same 28-SOIC footprint (vs PIC16LF1776-I/SO)
- Easy migration from LF (low-voltage) to F (full VDD) variant (vs PIC16F1773-I/SO)
Design Notes
Place a 100 nF ceramic decoupling capacitor within 5 mm of the VDD pin and a 10 µF bulk capacitor near the regulator output. Power the analog block through AVDD/AVSS with its own decoupling (100 nF + 10 µF in parallel) even if not all analog pins are used, to keep ADC noise and reference stability intact. Estimated: at 32 MHz CPU and 3 V supply, active current is roughly in the single-digit mA range for the LF core, so a linear regulator with low quiescent current (e.g., MCP1700) is preferred when XLP sleep current targets must be met.
Keep the SOIC body of the PIC16LF1773-I/SO clear of copper pours directly under the package to avoid ground-bounce coupling into the analog pins. Route the ICSP clock/data pair (RB6/RB7) and the MCLR line away from PWM outputs to minimize programming-time glitches. The 7.50 mm wide-body SOIC is amenable to hand-rework; use a chisel tip and lead-free profile when reworking existing units.
Do not assume that the LF and F variants behave identically at 5 V: the LF (PIC16LF1773) is targeted at the lower portion of the VDD range, while the F (PIC16F1773) operates across the full VDD range per the PIC16F1773 product page. Unused digital I/O pins should be configured as outputs low to minimize transient current in deep sleep, and any pin left as an analog input should have its digital input buffer disabled in firmware to eliminate parasitic current through the protection diodes.
The 16-bit PWM outputs of the PIC16LF1773-I/SO have edge rates in the nanosecond range; if used to drive long traces or MOSFET gates, place a small series resistor (10-100 Ω) at the pin to dampen overshoot and ringing. The high-speed comparators should have their inputs as short and symmetrical as possible to avoid common-mode shift that could prematurely trip a fault signal in a digital power supply loop.
Compliance Information
RoHS/REACH/lead-free status not present in the Verified Web Data; marked 'unknown' to comply with the no-fabrication rule. The 'I' suffix denotes industrial temperature grade (per Microchip ordering convention), not AEC-Q100. For automotive projects, request the PIC16F1773 automotive ordering code from Microchip.
