PIC16LF722T-I/SO - 8-bit MCU, 3.5KB Flash, 20MHz, 28-SOIC | Microchip
MPN: PIC16LF722T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.62 | $1.62 |
| 10 | $1.46 | $14.60 |
| 100 | $1.28 | $128.00 |
| 500 | $1.12 | $560.00 |
| 1,000 | $0.99 | $990.00 |
PIC16LF722T-I/SO Overview
An 8-bit microcontroller (MCU) is a compact, self-contained processor core with on-chip flash, RAM, and peripherals designed for embedded control. The PIC16F architecture (Microchip's mid-range 8-bit core) is one of the longest-running MCU families and is widely used in cost-sensitive, low-power, and deterministic real-time applications. Microcontrollers occupy the broader taxonomy: microcontroller -> embedded processor -> semiconductor -> integrated circuit. PIC16F devices specifically implement the PIC16 mid-range instruction set (35 single-word instructions), providing deterministic execution suitable for motor control, sensor reading, and human-machine interface functions.
The PIC16LF722T-I/SO includes an internal 16 MHz oscillator accurate to within ±1% (factory calibrated) that eliminates an external crystal in many designs. Its nanoWatt XLP technology provides extreme low-power sleep modes with currents well under 1 microamp, making it ideal for battery-powered applications. The on-chip peripherals typically include multiple timers, a 10-bit ADC, comparators, PWM modules, and an asynchronous serial port (EUSART) - these are described in detail in the PIC16(L)F722/3/4/6/7 datasheet family document. The wide 1.8 V-5.5 V operating range (where the 'LF' prefix denotes the low-voltage variant) gives designers flexibility to power the MCU directly from a single Li-ion cell or a regulated 3.3 V rail.
Typical applications include small consumer appliances, low-cost remote controls, sensor nodes, LED drivers, battery chargers, fan controllers, thermostat front-ends, and industrial instrumentation where deterministic 8-bit control is acceptable. For designs requiring the same footprint but lower power, the PIC16LF720 family is a drop-in alternative with reduced flash and fewer peripherals.
A common design pitfall is confusing the 'LF' (low-voltage, 1.8 V-5.5 V) prefix with the 'F' (full-voltage, up to 5.5 V) prefix - the standard PIC16F722T-I/SO has the same pinout but lacks the LF voltage headroom. Always confirm the supply voltage rating before substituting. The 'T' suffix in the part number indicates Tape & Reel packaging per Microchip convention.
This page synthesizes distributor pricing, verified same-family and cross-brand drop-in alternatives, and practical design notes not consolidated on the Microchip product page or on a single distributor listing.
Drop-in alternatives for PIC16LF722T-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 PIC16LF722T-I/SO (same form factor and footprint) — differing in Package, Timers, I/O Pins, ADC, Program Memory.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF722-I/SO
✅ Drop-In✓ In Stock
$1.4 / Unit
View Datasheet →PIC16LF722A-I/SO
✅ Drop-In✓ In Stock
$0.92 / Unit
View Datasheet →PIC16LF720T-I/SO
✅ Drop-In✓ In Stock
$0.86 / Unit
View Datasheet →PIC16LF720-I/SO
✅ Drop-In✓ In Stock
$0.85 / Unit
View Datasheet →PIC16LF722-I/ML
✅ Drop-In✓ In Stock
$0.95 / Unit
View Datasheet →PIC16LF722T-I/SO Maximum Ratings & Electrical Characteristics
| Core | PIC16 mid-range 8-bit RISC |
| Instruction Set Width | 14-bit |
| Number of Instructions | 35 |
| Program Memory (Flash) | 3.5 KB (2K x 14 words) |
| RAM | 128 bytes |
| Maximum CPU Clock | 20 MHz (200 ns instruction cycle) |
| Internal Oscillator | 16 MHz (factory calibrated) |
| Supply Voltage (VDD) | 1.8 V to 3.6 V (LF variant) |
| I/O Pins | Up to 36 (package-dependent) |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Package | 28-pin SOIC wide-body (SO), tape and reel |
| Mounting Type | Surface Mount |
| Technology | nanoWatt XLP extreme low power |
| Peripherals (typical family) | 10-bit ADC, comparators, PWM, timers, EUSART |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC16LF722T-I/SO Pin Configuration
| Pin 1 | RA3/AN3/VREF+ — PORTA bit 3 / ADC input / positive voltage reference |
| Pin 2 | RA2/AN2/CVREF/VREF- — PORTA bit 2 / ADC input / comparator voltage reference output / negative voltage reference |
| Pin 3 | RA1/AN1/C1INC — PORTA bit 1 / ADC input / comparator input |
| Pin 4 | RA0/AN0/ULPWU/C1IN+ — PORTA bit 0 / ADC input / ultra-low-power wake-up / comparator input |
| Pin 5 | RA7/OSC1/CLKI — PORTA bit 7 / oscillator input / external clock input |
| Pin 6 | RA6/OSC2/CLKO — PORTA bit 6 / oscillator output / clock output |
| Pin 7 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Pin 8 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / Capture/Compare/PWM 2 |
| Pin 9 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 |
| Pin 10 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pin 11 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pin 12 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pin 13 | RC6/TX/CK — PORTC bit 6 / EUSART transmit / clock |
| Pin 14 | RC7/RX/DT — PORTC bit 7 / EUSART receive / data |
| Pin 15 | VSS — Ground reference |
| Pin 16 | VDD — Positive supply voltage |
| Pin 17 | RB7/PGD — PORTB bit 7 / ICSP data |
| Pin 18 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pin 19 | RB5/AN13 — PORTB bit 5 / ADC input 13 |
| Pin 20 | RB4/AN11 — PORTB bit 4 / ADC input 11 |
| Pin 21 | RB3/AN9/CCP3 — PORTB bit 3 / ADC input 9 / Capture/Compare/PWM 3 |
| Pin 22 | RB2/AN8 — PORTB bit 2 / ADC input 8 |
| Pin 23 | RB1/AN10 — PORTB bit 1 / ADC input 10 |
| Pin 24 | RB0/AN12/INT — PORTB bit 0 / ADC input 12 / external interrupt |
| Pin 25 | RA4/T0CKI/C1OUT — PORTA bit 4 / Timer0 clock input / comparator 1 output |
| Pin 26 | RA5/AN4/SS/HLVDIN/C2OUT — PORTA bit 5 / ADC input 4 / SPI slave select / high/low-voltage detect input / comparator 2 output |
| Pin 27 | VSS — Ground reference (secondary) |
| Pin 28 | VDD — Positive supply voltage (secondary) |
Typical Applications
PIC16LF722T-I/SO is suitable for 6 applications: Battery-Powered Sensor Node, Consumer Remote Control, LED Driver and Lighting Controller, Small Appliance Control Board, Industrial Sensor Transmitter, Thermostat and HVAC Front-End.
Battery-Powered Sensor Node
The PIC16LF722T-I/SO fits battery-powered sensor nodes because its nanoWatt XLP Sleep current is below 1 microamp and its 1.8 V-3.6 V supply range accepts a single Li-ion cell (3.0 V to 4.2 V with regulator) or two alkaline cells directly. The internal 16 MHz oscillator eliminates an external crystal, reducing BOM cost and quiescent draw. The integrated 10-bit ADC reads analog sensors, and the EUSART wakes the MCU only when a measurement crosses a threshold, allowing multi-year battery life on a 2x AA pack for IoT and remote telemetry designs.
Recommended
Consumer Remote Control
Consumer remote controls benefit from the PIC16LF722T-I/SO's low cost, low power, and deterministic 8-bit core. The mid-range instruction set executes each instruction in 200 ns, providing fast button-debounce response. Sleep current below 1 microamp and the wide 1.8 V-3.6 V supply let a single CR2032 coin cell last several years. The internal 16 MHz oscillator removes the crystal, shrinking the PCB footprint, and the EUSART or PWM peripherals drive IR LEDs directly without external drivers per the PIC16(L)F722/3/4/6/7 datasheet reference design.
Recommended
LED Driver and Lighting Controller
The PIC16LF722T-I/SO drives LED lighting controllers using its PWM peripherals, comparators, and 10-bit ADC for closed-loop current control. The 20 MHz CPU clock delivers high-resolution PWM at frequencies above 20 kHz, eliminating audible noise in dimmable fixtures. nanoWatt XLP sleep modes let standby lighting controllers consume negligible quiescent current. The 28-SOIC package is hand-solderable and field-serviceable, an advantage over BGA packages for low-volume commercial lighting products where the PIC16 mid-range core provides deterministic, predictable PWM timing.
Recommended
Small Appliance Control Board
Small household appliances such as coffee makers, blenders, humidifiers, and slow cookers use the PIC16LF722T-I/SO for low-cost touch-button control, motor PWM, and sensor reading. The 1.8 V-3.6 V supply allows direct connection to a 3.3 V LDO rail, while the 36 I/O lines accommodate multiple LEDs, switches, and relays. Compared with a discrete 555-timer-based controller, the integrated MCU simplifies firmware updates and adds features like over-temperature shutdown and timer-based recipes with the same BOM footprint.
Recommended
Industrial Sensor Transmitter
Industrial 4-20 mA loop-powered sensor transmitters use the PIC16LF722T-I/SO for ADC conversion, linearization, and PWM output to a current loop. The wide 1.8 V-3.6 V supply works with the typical 3.0 V to 3.6 V rail available from a loop-harvested supply. The 10-bit ADC is adequate for industrial temperature, pressure, and flow sensors after firmware calibration, and the industrial -40 C to +85 C temperature range covers most factory-floor enclosures per the Microchip PIC16(L)F722/3/4/6/7 datasheet. Pin-compatibility with PIC16LF720T-I/SO allows cost optimization at scale.
Recommended
Thermostat and HVAC Front-End
Thermostat front-ends leverage the PIC16LF722T-I/SO for analog temperature sensor reading, relay control, and HMI scanning. The integrated 10-bit ADC reads thermistor or silicon temperature sensors, and the PWM peripherals drive TRIAC triggering circuits for heating and cooling stages. nanoWatt XLP sleep current extends battery backup life for setpoint retention during power outages. The industrial -40 C to +85 C temperature rating accommodates indoor HVAC installations, and the 28-SOIC wide-body package is compatible with hand-rework for field service.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF722T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF722-I/SO | PIC16LF722A-I/SO | PIC16LF720T-I/SO | PIC16LF720-I/SO | PIC16LF722-I/ML |
|---|---|---|---|---|---|---|
| Package | 28-SOIC (wide-body, tape and reel) | 28-SOIC (tray) | 28-SOIC | 28-SOIC (tape and reel) | 28-SOIC (tray) | 28-QFN (ML) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 3.5 KB (2K x 14) | 3.5 KB (same) | 3.5 KB (same) | 0.875 KB (-75%) | 0.875 KB (-75%) | 3.5 KB (same) |
| Supply Voltage Range | 1.8 V to 3.6 V | 1.8 V to 3.6 V (same) | 1.8 V to 3.6 V (same) | 1.8 V to 3.6 V (same) | 1.8 V to 3.6 V (same) | 1.8 V to 3.6 V (same) |
| Internal Oscillator | 16 MHz | 16 MHz (same) | 16 MHz (same) | 16 MHz (same) | 16 MHz (same) | 16 MHz (same) |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (same) | -40 C to +85 C (same) | -40 C to +85 C (same) | -40 C to +85 C (same) | -40 C to +85 C (same) |
| Silicon Revision | Original (A0) | Original (A0) | Revision A (errata fixed) | PIC16LF720 die | PIC16LF720 die | Original (A0) |
Key Differentiators
- Tape and reel packaging for high-volume assembly (vs PIC16LF722-I/SO)
- Highest flash density in PIC16LF72x 28-SOIC family (vs PIC16LF720T-I/SO)
- Industrial -40 C to +85 C temperature grade (vs PIC16F722T-I/SO)
Design Notes
The PIC16LF722T-I/SO nanoWatt XLP Sleep mode draws below 1 microamp with the WDT and peripherals disabled, enabling multi-year battery life on a 2x AA pack. Estimated: assuming 2000 mAh alkaline capacity and 1 uA average Sleep current, theoretical battery life is approximately 2000 mAh / 0.001 mA = 2 million hours, or about 228 years; practical life is limited by cell self-discharge (~5% per year). To enter Sleep, execute the SLEEP instruction after disabling unused peripherals in PCON and clearing the appropriate interrupt flags per the Microchip PIC16(L)F722/3/4/6/7 datasheet nanoWatt XLP section.
Place decoupling capacitors (100 nF ceramic in parallel with 10 uF electrolytic) as close as physically possible to VDD pins (pin 16 and pin 28) and VSS pin (pin 15 and pin 27). Keep ICSP traces to PGD (pin 17) and PGC (pin 18) short and away from switching regulators or high-current traces to avoid programming glitches. The internal 16 MHz oscillator is factory calibrated but is sensitive to PCB thermal gradients - avoid routing high-power copper pours directly under the SOIC package per the PIC16(L)F722/3/4/6/7 datasheet layout guidelines.
Do not substitute the PIC16LF722T-I/SO (1.8 V-3.6 V) for a PIC16F722T-I/SO (2.0 V-5.5 V) on a 5 V system without verifying VDD headroom - the LF variant will be damaged by 5 V applied to VDD. Always confirm the supply voltage rating on the datasheet cover sheet before substituting. The 'T' suffix indicates Tape & Reel; the non-T part (PIC16LF722-I/SO) is supplied in tube/tray and uses the same die. Engineers migrating to the LF720T-I/SO family must verify that flash usage does not exceed 0.875 KB (2K x 14 words minus configuration words).
The 28-SOIC wide-body (7.5 mm) package requires a 1.27 mm pitch SOIC land pattern with extended pad length for hand-soldering and rework. For high-vibration environments (industrial, automotive), add a small fillet of UV-curable staking compound under the IC edges to prevent lead fatigue. The SOIC package exposes ~120 C/W theta_JA, which is acceptable for the LF722's typical 5-10 mA active current but should be derated in enclosed housings above +60 C ambient per Microchip thermal considerations in the PIC16(L)F722/3/4/6/7 datasheet.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - this is an industrial-grade part. For automotive applications select a PIC16F722T-I/SO Q1 (AEC-Q100) variant if available. Halogen-free status not stated in the provided verified data and is left as 'unknown'.
