PIC16LF722AT-I/MV - 8-bit MCU, 3.5KB Flash, 20MHz, UQFN-28 | Microchip
MPN: PIC16LF722AT-I/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.75 | $2.75 |
| 10 | $2.48 | $24.80 |
| 100 | $2.22 | $222.00 |
| 500 | $1.99 | $995.00 |
| 1,000 | $1.78 | $1,780.00 |
PIC16LF722AT-I/MV Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data memory, and configurable peripherals such as timers, communication interfaces, and ADCs. The 8-bit MCU category sits at the entry point of the embedded hierarchy (8-bit MCU -> microcontroller -> embedded processor -> semiconductor), and the PIC16 family is one of the longest-running architectures in production, favored for deterministic interrupt response, simple toolchains, and ultra-low sleep power. The PIC16LF722AT belongs to Microchip's nanoWatt XLP lineup, which is engineered for extended battery life through aggressive sleep modes and fast wake-up from internal oscillators.
Key features include the nanoWatt XLP technology for sub-microamp sleep currents, an integrated 8 MHz to 32 MHz internal oscillator with PLL option, and a 10-bit ADC with up to 14 channels, depending on package variant. The device also offers Enhanced Capture/Compare/PWM (ECCP) modules, two Comparators, an EUSART, MSSP for SPI/I2C, and up to 36 I/O pins multiplexed across digital and analog functions. The integrated ICD/debug support and 16-level hardware stack streamline firmware development.
Architecturally, the PIC16LF722AT uses a Harvard RISC core with a fixed 14-bit instruction word, dual-cycle branch, and a vectored interrupt structure. The internal oscillator trimming and PLL deliver accurate baud-rate generation for asynchronous serial links, while the nanoWatt XLP power-management unit tracks dynamic current vs. clock speed and wakes the CPU in a single oscillator cycle from deep sleep. Temperature range is -40 C to +85 C (Industrial grade).
Typical applications include low-power sensor nodes, battery-powered remote controls, consumer white goods, IoT edge devices, medical wearables, and industrial control panels where the small UQFN footprint enables dense board layouts. The combination of 3.5 KB Flash and 20 MHz performance is sufficient for state-machine control, simple protocol bridging, and user-interface tasks.
When designing with the PIC16LF722AT, ensure the exposed thermal pad is soldered to a continuous ground plane to meet thermal dissipation and provide a low-impedance return for the ADC. The internal oscillator calibration bits in CONFIG should be left at factory defaults unless the application specifically requires a non-standard Fosc.
This page synthesizes distributor stock and pricing, drop-in replacement parts from the PIC16 family, application circuits, and practical design notes that go beyond the manufacturer datasheet to help engineers select and qualify the PIC16LF722AT-I/MV.
Drop-in alternatives for PIC16LF722AT-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 PIC16LF722AT-I/MV (same form factor and footprint) — differing in Package, ADC, I/O Pins, Timers, Low-Power Technology.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF722A-I/MV
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.05 / Unit
View Datasheet →PIC16LF722A-E/MV
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.02 / 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 →PIC16LF727-I/MV
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.85 / Unit
View Datasheet →PIC16LF1903-E/MV
✅ Drop-In✓ In Stock
$0.85 / Unit
View Datasheet →PIC16LF722AT-I/MV Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC16 RISC, 14-bit instruction word |
| Program Memory (Flash) | 3.5 KB |
| Data EEPROM | 128 bytes |
| Data RAM | 128 bytes |
| Maximum CPU Speed | 20 MHz (5 MIPS) |
| Supply Voltage Range | 1.8 V to 3.6 V |
| I/O Pins | Up to 36 (package-dependent; 22 on this UQFN-28) |
| ADC | 10-bit, up to 14 channels |
| Timers | TMR0, TMR1 (16-bit), TMR2, plus ECCP |
| Communication Peripherals | EUSART, MSSP (SPI / I2C) |
| Comparators | 2 |
| Internal Oscillator | 8 MHz to 32 MHz, with PLL |
| Low-Power Technology | nanoWatt XLP |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Package | 28-pin UQFN (4x4 mm) with exposed pad |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant (lead-free) |
PIC16LF722AT-I/MV Pin Configuration
| Pin 1 | RA2/AN2 — Bidirectional I/O / analog input |
| Pin 2 | RA3/AN3/VREF+ — Bidirectional I/O / analog input / ADC reference |
| Pin 3 | RA4/AN4 — Bidirectional I/O / analog input |
| Pin 4 | RA5/AN5 — Bidirectional I/O / analog input |
| Pin 5 | VSS — Ground |
| Pin 6 | RA7/OSC1 — I/O / oscillator input |
| Pin 7 | RA6/OSC2 — I/O / oscillator output |
| Pin 8 | RC0 — Bidirectional I/O |
| Pin 9 | RC1 — Bidirectional I/O |
| Pin 10 | RC2 — Bidirectional I/O |
| Pin 11 | RC3 — Bidirectional I/O |
| Pin 12 | RC4 — Bidirectional I/O / EUSART TX (alt) |
| Pin 13 | RC5 — Bidirectional I/O |
| Pin 14 | RC6 — Bidirectional I/O |
| Pin 15 | RC7 — Bidirectional I/O |
| Pin 16 | VDD — Positive supply (1.8V-3.6V) |
| Pin 17 | RB0/INT — I/O / external interrupt |
| Pin 18 | RB1 — Bidirectional I/O |
| Pin 19 | RB2 — Bidirectional I/O |
| Pin 20 | RB3 — Bidirectional I/O |
| Pin 21 | RB4 — Bidirectional I/O / weak pull-up |
| Pin 22 | RB5 — Bidirectional I/O / weak pull-up |
| Pin 23 | RB6/ICSPCLK — I/O / ICSP clock |
| Pin 24 | RB7/ICSPDAT — I/O / ICSP data |
| Pin 25 | RA0/AN0 — Bidirectional I/O / analog input |
| Pin 26 | RA1/AN1 — Bidirectional I/O / analog input |
| Pin 27 | VDD — Positive supply |
| Pin 28 | VSS — Ground |
Typical Applications
PIC16LF722AT-I/MV is suitable for 6 applications: Battery-Powered Wireless Sensor Nodes, Consumer Remote Controls and User Input, Industrial Sensor Signal Conditioning, Medical Wearables and Personal Monitoring, Home Appliance and White Goods Control, Automotive Interior and Body Electronics.
Battery-Powered Wireless Sensor Nodes
The PIC16LF722AT-I/MV is well suited for wireless sensor endpoints in IoT and home-automation deployments. The 1.8 V to 3.6 V supply range allows direct operation from a single CR2032 coin cell or 2xAA alkaline pack, while the nanoWatt XLP sleep currents stay below 1 uA in deep sleep with the watchdog disabled, extending battery life to multiple years in duty-cycled applications. The 3.5 KB Flash and 128 bytes of RAM are sufficient for state-machine firmware driving sub-GHz radio modules or BLE companion ICs as the host MCU. The 10-bit ADC with internal reference supports direct connection of analog sensor elements such as thermistors and light sensors without external components.
Recommended
Consumer Remote Controls and User Input
Low-cost IR/RF remote controls, thermostat keypads, and appliance user-interface boards benefit from the PIC16LF722AT-I/MV's compact UQFN-28 footprint, EUSART, and CCP/ECCP peripherals. The 20 MHz core runs keypad scanning and IR protocol encoding with deterministic loop timing, while the internal 8-32 MHz oscillator with PLL eliminates external timing components. nanoWatt XLP allows the MCU to sleep at sub-uA between button presses, waking on interrupt-driven change detection for years of life from two AAA cells.
Recommended
Industrial Sensor Signal Conditioning
Industrial automation and process-control sub-boards use the PIC16LF722AT-I/MV for local A/D conversion, scaling, and isolated serial communication back to a host controller. The 10-bit ADC with up to 14 channels multiplexes thermocouple, RTD, 4-20 mA loop, and digital inputs through a single MCU, while the Enhanced Capture/Compare module drives PWM outputs for valve or heater control. The internal oscillator maintains accurate timing for EUSART-based RS-485 links without external crystals, lowering BOM cost for high-channel-count distributed I/O.
Recommended
Medical Wearables and Personal Monitoring
Wearable medical and fitness devices leverage the PIC16LF722AT-I/MV for bio-signal acquisition and power-efficient edge processing. The 1.8 V low-voltage operation permits direct Li-ion cell supply without boost converters, reducing PCB area on body-worn form factors. The Comparators provide hardware-level threshold detection for heart-rate or pulse-oximetry front-ends, while nanoWatt XLP keeps quiescent draw small between sample intervals. Small UQFN package height is suitable for slim wearable mechanical designs.
Recommended
Home Appliance and White Goods Control
Washing machines, dishwashers, ovens, and other white goods use the PIC16LF722AT-I/MV for front-panel control and motor/relay sequencing. The 36 I/O count (in larger package variants) drives multiplexed LED or LCD displays, while ECCP modules handle triac-trigger phase-angle control of AC loads. Internal oscillator precision is sufficient for kitchen timer and clock functions; the -40 C to +85 C industrial temperature range ensures operation in cabinet-mounted positions near hot zones.
Recommended
Automotive Interior and Body Electronics
Body and interior ECUs (lighting controllers, climate panel interfaces, accessory hubs) benefit from the PIC16LF722AT-I/MV's low-power performance and broad peripheral set. While the LF variant is industrial grade, the family pin-compatible PIC16F722A-E/MV (extended temperature) supports under-hood-adjacent environments. ECCP modules drive LED dimming through PWM, and the EUSART plus MSSP support LIN bus and SPI/I2C peripherals for sensor and actuator networking. Internal oscillator trimming supports CAN/LIN baud stability over temperature.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF722AT-I/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF722A-I/MV | PIC16LF722A-E/MV | PIC16LF727-I/MV |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-pin UQFN (4x4 mm) | 28-pin UQFN (4x4 mm) - same | 28-pin UQFN (4x4 mm) - same | 28-pin UQFN - same |
| Program Memory (Flash) | 3.5 KB | 3.5 KB | 3.5 KB | 7 KB |
| Maximum CPU Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Supply Voltage Range | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Data RAM | 128 bytes | 128 bytes | 128 bytes | 256 bytes |
| Temperature Grade | -40C to +85C Industrial | -40C to +85C Industrial | -40C to +125C Extended | -40C to +85C Industrial |
| ADC Channels | 14 channels, 10-bit | 14 channels, 10-bit | 14 channels, 10-bit | 14 channels, 10-bit |
Key Differentiators
- Lowest-voltage 8-bit MCU in the family at 1.8 V minimum (vs PIC16F722A)
- nanoWatt XLP deep-sleep current below 1 uA (vs PIC16LF727-I/MV)
- Industry-standard 14-bit instruction PIC16 mid-range core (vs PIC16LF1903-E/MV)
- Industrial -40C to +85C grade available in family (vs Commercial-grade siblings)
Design Notes
Estimated: When operating at VDD = 3.0 V and CPU idle at 32 kHz LFINTOSC, the PIC16LF722AT-I/MV draws approximately 1.4 uA typical in sleep (watchdog disabled). Adding the watchdog increases sleep current to roughly 5 uA. For coin-cell designs targeting multi-year life, disable the watchdog and use the external interrupt (INT pin) or a periodic timer1 to wake the device. Always decouple VDD with at least one 0.1 uF X7R ceramic placed within 5 mm of the VDD pin to suppress core-current transients during oscillator transitions.
The UQFN-28 exposed thermal pad (pin 29) MUST be soldered to a contiguous copper ground plane for both thermal dissipation and low-impedance analog reference return. Stitch vias through to a back-side ground pour for best ADC accuracy. Keep the analog (ANx) traces short, route them on a single layer, and avoid passing them parallel to digital switching lines. Place the ICSP test pad footprint even on production boards for in-circuit programming and field firmware updates.
Do not exceed the 3.6 V absolute maximum on VDD even in transient spikes; the LF variant does not have 5 V tolerant I/O. Incorrect Configuration Word settings (e.g., enabling the PLL at low FOSC) can cause the oscillator to fail to start, locking the device in reset. Always budget the Brown-out Reset (BOR) trip to the application's lowest stable supply; the PIC16LF722AT default BOR may release the device below the operating minimum and cause data corruption in EEPROM or RCON flags.
For EUSART RS-485 nodes, route the differential pair with 100-ohm controlled impedance and match lengths within 5 mm. Place the transceiver close to the MCU EUSART pins to minimize capacitive loading on the asynchronous clock. For I2C, populate 4.7 kohm pull-ups only if no other devices share the bus; for mixed-voltage applications use a level translator because the LF variant I/O is not 5 V tolerant.
Compliance Information
RoHS lead-free verified per Microchip product page. The PIC16LF722AT is industrial grade (not AEC-Q100 qualified); the pin-compatible PIC16F722AT-E/MV (extended temp) is the recommended option for under-hood-adjacent automotive applications.
