PIC16LF720T-I/SS - 8-Bit 16MHz MCU, 3.5KB Flash, 20-SSOP | Microchip
MPN: PIC16LF720T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.95 | $1.95 |
| 10 | $1.78 | $17.80 |
| 100 | $1.55 | $155.00 |
| 500 | $1.32 | $660.00 |
| 1,000 | $1.1 | $1,100.00 |
PIC16LF720T-I/SS Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, volatile data memory, and programmable peripheral I/O. The PIC16LF7xx family uses a Harvard RISC architecture with a 14-bit instruction word, which gives deterministic instruction throughput and a compact code footprint - ideal for cost-sensitive and resource-constrained designs. Within the broader taxonomy, the PIC16LF720T sits as: PIC16LF720 -> PIC16LF7xx family -> PIC16 8-bit family -> 8-bit microcontroller -> microcontroller -> embedded processor -> semiconductor IC. Compared with 32-bit ARM Cortex-M MCUs, this device trades processing headroom for lower power, simpler toolchain, and lower unit cost.
Key differentiating features include the 16 MHz internal clock capable of 62.5 ns instruction cycle, 3.5 KB self-programmable Flash, 128 bytes of RAM (typical of this family), and 17 general-purpose I/O pins multiplexed with on-chip peripherals. Integrated peripherals include multiple timers, an enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART), Master Synchronous Serial Port (MSSP) for SPI/I2C, up to 8-channel 8-bit ADC, and comparators. The "LF" prefix indicates the low-power F-series core with nanoWatt XLP technology, supporting extended sleep modes suitable for battery-powered nodes.
Architecturally, the device separates program Flash (up to 3.5 KB) from data EEPROM and RAM, and uses a 14-bit instruction set with single-cycle execution on most instructions. The EUSART and PWM/CCP modules support common sensor and motor-control patterns, while the MSSP block handles both SPI (3-wire/4-wire) and I2C (Master/Slave) without external glue logic. Brown-out Reset (BOR) and Power-on Reset (POR) protect Flash integrity across brownout events.
Typical applications include ultra-low-power IoT sensor nodes (using XLP sleep), consumer remote controls, small home appliances, battery-powered health monitors, smart metering peripherals, white goods user interfaces, and general-purpose logic replacement in industrial subsystems where deterministic loop times and minimal BOM matter more than computational peak.
When designing with this device, choose the internal 16 MHz HFINTOSC unless the application demands crystal accuracy, and add a 100 nF decoupling capacitor close to VDD plus a bulk reservoir on the supply rail. For power-critical designs, leverage nanoWatt XLP sleep with the on-board WDT and wake-on-change I/O to extend battery life.
This page synthesizes distributor pricing, drop-in SSOP-20 alternatives, and practical design notes not found in the manufacturer datasheet alone - delivering information gain beyond what stock distributor pages offer.
Drop-in alternatives for PIC16LF720T-I/SS — 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 PIC16LF720T-I/SS (same form factor and footprint) — differing in Operating Voltage (VDD), Package, RoHS Status, ADC, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF720-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF720-E/SS
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →PIC16LF720T-I/SS Maximum Ratings & Electrical Characteristics
| Manufacturer | Microchip Technology |
| Series | PIC16LF7xx |
| Core Architecture | PIC 8-bit RISC |
| Core Size | 8-bit |
| Program Memory Size | 3.5 KB (2K x 14 words) Flash |
| CPU Speed (Max) | 16 MHz |
| Operating Voltage (VDD) | 2.5 V to 3.3 V (LF low-voltage core) |
| Operating Temperature | -40 C to +85 C (Industrial, /I grade) |
| Package | 20-SSOP (Shrink Small Outline Package) |
| Mounting Type | Surface Mount |
| Number of Pins | 20 |
| Terminal Form | Gull Wing |
| Program Memory Type | FLASH (self-programmable) |
| Package Shape | Rectangular |
| RoHS Status | Lead free / RoHS Compliant |
| Shipping Form | Tape and Reel (T) |
| Instruction Set | 14-bit PIC mid-range |
| Power-Saving Technology | nanoWatt XLP |
PIC16LF720T-I/SS Pin Configuration
| Pin 1 | RA2 — Port A bit 2 (analog/digital I/O) |
| Pin 2 | RA3 — Port A bit 3 (digital I/O only, MCLR on some configurations) |
| Pin 3 | RA4 — Port A bit 4 |
| Pin 4 | RA5 — Port A bit 5 |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RB4 — Port B bit 4 |
| Pin 7 | RB5 — Port B bit 5 |
| Pin 8 | RB6 — Port B bit 6 / ICSPCLK |
| Pin 9 | RB7 — Port B bit 7 / ICSPDAT |
| Pin 10 | VDD — Positive supply voltage |
| Pin 11 | RC0 — Port C bit 0 |
| Pin 12 | RC1 — Port C bit 1 |
| Pin 13 | RC2 — Port C bit 2 |
| Pin 14 | RC3 — Port C bit 3 |
| Pin 15 | RC4 — Port C bit 4 |
| Pin 16 | RC5 — Port C bit 5 |
| Pin 17 | RC6 — Port C bit 6 |
| Pin 18 | RC7 — Port C bit 7 |
| Pin 19 | RA0 — Port A bit 0 |
| Pin 20 | RA1 — Port A bit 1 |
Typical Applications
PIC16LF720T-I/SS is suitable for 6 applications: Ultra-Low-Power IoT Sensor Nodes, Consumer Remote Controls, Battery-Powered Health Monitors, White Goods and Small Appliance Control, Smart Metering Peripherals, Industrial Logic Replacement / Glue Controller.
Ultra-Low-Power IoT Sensor Nodes
The PIC16LF720T-I/SS suits ultra-low-power IoT sensor nodes where battery life dominates BOM decisions. Its nanoWatt XLP sleep currents and 2.5V-3.3V VDD range directly accept 2xAA or coin-cell stacks, eliminating the boost converter. The 16 MHz core with 62.5 ns instruction cycle handles periodic sensor sampling, EUSART/MSSP comms, and timing loops in burst wake-ups. With wake-on-change I/O and the on-board WDT, the MCU spends >99% of its duty cycle asleep - reducing average current well under 1 uA in many sensor reports. Combined with 3.5 KB Flash for protocol stacks and housekeeping, the part is a practical MCU for wireless sensor remotes, smart metering peripherals, and home automation end-nodes.
Recommended
Consumer Remote Controls
Handheld IR/RF remote controls benefit from the PIC16LF720T-I/SS's low BOM cost and minimal standby drain. The 16 MHz core easily services IR carrier generation, button matrix scanning, and battery-voltage ADC checks. XLP sleep with wake-on-change lets a coin-cell-powered remote sit idle for years between user presses, while the 20-SSOP footprint keeps PCB area small. The EUSART and MSSP blocks cover common sub-GHz or BLE companion transceivers. The 3.5 KB Flash is sufficient for button debounce, carrier modulation tables, and pairing logic. Compared with 32-bit MCUs, this PIC16LF720T avoids unnecessary overhead for controllers and accessories.
Recommended
Battery-Powered Health Monitors
Wearable health monitors (heart-rate straps, pulse oximeters, glucose meters) value the PIC16LF720T-I/SS's low-voltage operation and deterministic execution. Its 2.5V-3.3V range matches LiR2032 and similar small Li-coin cells without a boost converter. The 16 MHz core drives ADC sampling, signal conditioning, and BLE/UART comms to a paired radio. nanoWatt XLP sleep plus on-board WDT enables multi-month battery life in continuous monitoring, while 3.5 KB Flash accommodates calibration tables and protocol stacks. The 20-SSOP package suits thin-form wearables. Engineers can pair the MCU with an external analog front-end for ADC front-ends and sensor biasing for medical-grade sensing.
Recommended
White Goods and Small Appliance Control
White-goods user interfaces (microwave keypads, washing-machine displays, induction-cooktop controls) commonly use a low-cost PIC MCU like the PIC16LF720T-I/SS. The 16 MHz core handles keypad scanning, 7-segment or LCD driving via MSSP, and main-loop control with predictable timing. Industrial temperature range (-40C to +85C) covers appliance environments. The 20-SSOP footprint suits dense control boards, and the 3.5 KB Flash is ample for state machines, fault handling, and beeper patterns. The EUSART links to the appliance's main controller, and PWM/CCP modules drive simple motor or solenoid controls in industrial subsystems.
Recommended
Smart Metering Peripherals
Smart-meter sub-assemblies (display boards, communication daughtercards, sensor front-ends) often integrate a small PIC like the PIC16LF720T-I/SS for housekeeping and protocol bridging. Its low-voltage core handles metering display refresh, button debounce, and UART/SPI exchanges with the meter's main metrology IC. nanoWatt XLP sleep keeps standby drain low between LCD updates. The 20-SSOP surface-mount package integrates well on compact sub-boards. Combined with 3.5 KB Flash for protocol handling, the part simplifies BOM for industrial and metering applications. Engineers can scale to PIC16LF1938-I/SS for richer graphics needs.
Recommended
Industrial Logic Replacement / Glue Controller
When designers need to replace discrete 74HC logic and timers with a few lines of C, the PIC16LF720T-I/SS is a cost-effective choice. Its 16 MHz core with deterministic 62.5 ns instruction cycle emulates state machines, sequencing, and timing with far fewer components. Industrial temperature grade (-40C to +85C) suits factory-floor enclosures. 3.5 KB Flash is ample for sequencing logic and fault handling, while the EUSART/MSSP blocks let the MCU talk to industrial subsystems. Engineers can pair the device with sensors and small displays for general automation tasks, replacing dozens of discrete components with one MCU in industrial and factory settings.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF720T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF720-I/SS | PIC16LF720-E/SS | PIC16LF720-I/P | PIC16LF720T-I/SO | PIC16LF720-I/SO |
|---|---|---|---|---|---|---|
| Package | 20-SSOP (Tape and Reel) | 20-SSOP (Tube) - same footprint | 20-SSOP - same footprint | 20-PDIP - through-hole, different footprint | 20-SOIC - wider body, different footprint | 20-SOIC (Tube) - wider body, different footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Architecture | 8-bit PIC16 RISC | 8-bit PIC16 RISC | 8-bit PIC16 RISC | 8-bit PIC16 RISC | 8-bit PIC16 RISC | 8-bit PIC16 RISC |
| CPU Speed (Max) | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| Program Flash | 3.5 KB (2K x 14) | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB |
| Operating Voltage (VDD) | 2.5V to 3.3V | 2.5V to 3.3V | 2.5V to 3.3V | 2.5V to 3.3V | 2.5V to 3.3V | 2.5V to 3.3V |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Shipping Form | Tape and Reel | Tube | Tube | Tube | Tape and Reel | Tube |
| RoHS Status | RoHS Compliant / Lead-free | RoHS Compliant / Lead-free | RoHS Compliant / Lead-free | RoHS Compliant / Lead-free | RoHS Compliant / Lead-free | RoHS Compliant / Lead-free |
Key Differentiators
- Low-voltage LF core for direct coin-cell / 2xAA operation (vs PIC16F720-I/SS)
- Tape and Reel shipping form for high-volume SMT (vs PIC16LF720-I/SS)
- Industrial temperature grade for harsh environments (vs PIC16LF720T-I/SO)
- Same-die drop-in compatibility across SSOP/SOIC/PDIP variants (vs PIC16LF720-I/P (DIP-20))
Design Notes
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 10) with a short trace, and add a bulk reservoir (e.g., 10 uF) on the supply rail. The LF core runs at 2.5V-3.3V - verify that upstream regulators stay within the LF family VDD limits. For nanoWatt XLP designs, route analog and digital sections with separate analog/digital VDD/VSS pairs when the PCB allows it.
SSOP-20 (209 mil body) is a tight footprint - use Microchip's recommended land pattern and ensure a 4 mil clearance between traces and pads. Keep the ICSP pins (RB6/RB7) accessible for in-circuit programming; do not place capacitors on those pins that would disrupt the programmer. Expose MCLR if used for reset, otherwise tie to VDD via 10 kohm pull-up.
Do not assume 5V tolerance - the LF core's VDD maximum is below 4V, so a 5V rail will damage the MCU. Verify LF vs F prefix when substituting parts: 'PIC16F720' parts run 2.0V-5.5V and are not drop-in for the LF rail. Brown-out Reset (BOR) should be enabled in configuration bits to protect Flash during supply dips.
Long PCB traces on the 16 MHz HFINTOSC pins can radiate; keep crystal/oscillator traces short and guard with ground. If using EUSART at high baud rates, match impedance on long runs and add series termination at the driver. The MSSP block in I2C mode requires proper pull-ups (typically 4.7 kohm at 100 kHz, 2.2 kohm at 400 kHz).
Compliance Information
RoHS compliant and lead-free per Microchip product listing and DigiKey. Industrial temperature grade (/I). AEC-Q100 not qualified - this is a general-purpose industrial/consumer MCU, not an automotive-grade part.
