PIC16LF18344T-I/GZ - 32MHz 8-bit XLP MCU, 7KB Flash | Microchip
MPN: PIC16LF18344T-I/GZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.62 | $1.62 |
| 10 | $1.45 | $14.50 |
| 100 | $1.21 | $121.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.92 | $920.00 |
| 3,300 | $0.78 | $2,574.00 |
PIC16LF18344T-I/GZ Overview
An 8-bit microcontroller is a single-chip computer that integrates a CPU, program memory (Flash), data memory (RAM), and peripherals around an 8-bit data bus. Within the broader taxonomy, the PIC16LF18344 belongs to the PIC16 family of Microchip mid-range MCUs (8-bit RISC microcontroller -> microcontroller -> embedded processor -> semiconductor). The LF prefix denotes a wide-voltage, low-power variant optimized for battery-powered designs where nanoWatt XLP sleep currents and active-mode efficiency both matter.
Key features include 4K x 14-bit Flash (7 KB), 512 bytes of SRAM, 256 bytes of EEPROM, 18 dedicated I/O pins, integrated 10-bit ADC with up to 17 channels, a 5-bit DAC, four 16-bit timers, two USART, two SPI/I2C, and Peripheral Pin Select (PPS) for flexible signal routing. The device operates across a wide 1.8V to 3.6V supply range typical for the LF family and supports nanoWatt XLP sleep currents below 1 uA in deep sleep, making it suitable for energy-harvesting and battery-backed applications.
Architecturally, the PIC16LF18344 uses a 14-bit instruction word RISC engine with a hardware multiplier and 32-level stack, combined with Core Independent Peripherals (CIPs) such as Configurable Logic Cells (CLC), Complementary Waveform Generator (CWG), Numerically Controlled Oscillator (NCO), and Zero-Cross Detect (ZCD) that offload tasks from the CPU. PPS lets designers remap digital peripherals onto most I/O pins after PCB layout is finalized.
Typical applications include IoT sensor nodes, wearable health patches, remote controls, low-power wireless hubs, battery-powered instrumentation, and consumer white goods. The wide voltage range and XLP modes are particularly valuable in designs powered by coin-cell or Li-SOCl2 batteries. Engineers using MPLAB X IDE with XC8 compiler can develop on the PIC16LF18344 and the pin-compatible PIC16F18344 with a single code base; the F variant adds FuSa functional-safety support for IEC 60730 Class B appliances.
A practical design tip is to assign PPS functions late in the design cycle so layout changes do not require rework, and to keep decoupling within 5 mm of VDD with a bulk cap plus a 100 nF high-frequency cap. Per the manufacturer's catalog and the PIC16(L)F18324/18344 datasheet, this part complements the lower-pin PIC16LF18323/18324 family and offers an upgrade path within the 20-pin UQFN EP footprint. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone datasheet.
Drop-in alternatives for PIC16LF18344T-I/GZ — 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 PIC16LF18344T-I/GZ (same form factor and footprint) — differing in Package, ADC, Operating Temperature, Program Memory (Flash), Communication.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18344T-I/GZ
✅ Drop-In✓ In Stock
$1.32 / Unit
View Datasheet →PIC16LF18324T-I/GZ
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF18344-I/GZ
✅ Drop-In✓ In Stock
$1.3 / Unit
View Datasheet →PIC16LF18326-I/GZ
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1829-I/GZ
✅ Drop-In✓ In Stock
$0.69 / Unit
View Datasheet →PIC16LF18344T-I/GZ Maximum Ratings & Electrical Characteristics
| Family | PIC16(L)F183xx, PIC XLP 16F |
| Architecture | 8-bit Enhanced Mid-Range PIC RISC, 14-bit instruction word |
| Max CPU Speed | 32 MHz (32 MIPS, 4-cycle instruction) |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data RAM | 512 bytes |
| Data EEPROM | 256 bytes |
| I/O Pins | 18 |
| ADC | 10-bit, up to 17 channels |
| DAC | 5-bit, 1 channel |
| Timers | 4 x 16-bit (TMR0/1/2/3/4/5/6); WDT |
| Communication | 2x USART (EUSART), 2x SPI, 2x I2C |
| Peripherals (CIP) | CLC, CWG, NCO, ZCD, CCP/PWM, PPS |
| Supply Voltage (LF) | 1.8 V to 3.6 V |
| Operating Temperature | -40C to +85C (industrial, 'I') |
| Package | 20-UQFN EP 4x4 mm with exposed thermal pad |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16LF18344T-I/GZ Pin Configuration
| Pin 1 | RA5 — Digital I/O / analog / ICSPDAT |
| Pin 2 | RA4 — Digital I/O / analog / CLKOUT |
| Pin 3 | RA3 — Digital I/O / analog / MCLR (weak pull-up only) |
| Pin 4 | RA2 — Digital I/O / analog |
| Pin 5 | RA1 — Digital I/O / analog / ICSPCLK |
| Pin 6 | RA0 — Digital I/O / analog |
| Pin 7 | VSS — Ground reference |
| Pin 8 | VDD — Positive supply 1.8V-3.6V |
| Pin 9 | RB7 — Digital I/O / ICSPCLK |
| Pin 10 | RB6 — Digital I/O / ICSPDAT |
| Pin 11 | RB5 — Digital I/O / analog |
| Pin 12 | RB4 — Digital I/O / analog |
| Pin 13 | RC7 — Digital I/O / analog |
| Pin 14 | RC6 — Digital I/O / analog |
| Pin 15 | RC5 — Digital I/O / analog |
| Pin 16 | RC4 — Digital I/O / analog |
| Pin 17 | RC3 — Digital I/O / analog |
| Pin 18 | RC2 — Digital I/O / analog |
| Pin 19 | RC1 — Digital I/O / analog |
| Pin 20 | RC0 — Digital I/O / analog |
Typical Applications
PIC16LF18344T-I/GZ is suitable for 6 applications: Battery-Powered IoT Sensor Node, Wearable Health Patch, Consumer Remote Control (IR/RF), Smart Home White Goods Control, Industrial Sensor Transmitter (4-20 mA / IO-Link), Capacitive Touch User Interface.
Battery-Powered IoT Sensor Node
The PIC16LF18344T-I/GZ fits battery-powered IoT sensor nodes because its 1.8V-3.6V LF supply pairs directly with single-cell Li-ion or coin-cell batteries, while nanoWatt XLP sleep currents below 1 uA extend runtime to multi-year horizons. The 32MHz core, 17-channel 10-bit ADC, and 2x EUSART/SPI/I2C run concurrent sensor sampling and radio handshakes without CPU overload, and Peripheral Pin Select (PPS) lets designers place the SPI bus near the radio module after the PCB is laid out. Power dissipation estimated at 5 mA active / 0.7 uA sleep enables decade-life coin-cell duty-cycled designs. Recommended companions: MCP9808 temperature sensor and RN2483 LoRa transceiver.
Recommended
Wearable Health Patch
Wearables benefit from the PIC16LF18344T-I/GZ because the XLP sleep currents and 32 MIPS performance handle heart-rate, SpO2, and motion-sensor fusion at low average power. The mTouch-capable ADC channels can implement capacitive touch buttons on the patch enclosure without extra ICs, and the CWG peripheral drives haptic-feedback buzzers synchronously to the BLE radio bursts, avoiding CPU wakeups. With a 1.8V supply and active-mode draw in the single-digit mA, the chip extends a 100 mAh Li-Po cell to 7-10 days of continuous monitoring. Recommended companions: MAX30102 optical sensor and LIS2DH accelerometer.
Recommended
Consumer Remote Control (IR/RF)
In a universal remote, the PIC16LF18344T-I/GZ drives IR LEDs and 433 MHz / 2.4 GHz RF transmitters via its CWG and PWM peripherals, while its low-voltage LF supply runs directly from two AAA cells without a boost converter. The 7 KB Flash comfortably stores IR protocol libraries (RC5, NEC, Samsung, Sony), and the EEPROM holds user-learned codes across battery swaps. Sleep current below 1 uA ensures shelf life of 5+ years, and 32 MIPS execution keeps button latency to sub-10 ms - imperceptible to the user. Recommended companions: TSAL6100 IR LED and MICRF211 RF transmitter.
Recommended
Smart Home White Goods Control
The PIC16F18344T-I/GZ (the F variant of the same die) drives washing-machine, dishwasher, and induction-cooktop control boards using its 17-channel ADC reading temperature, current, and water-level sensors, and its CWG producing zero-cross-switched AC driver pulses. The functional-safety (FuSa) features simplify IEC 60730 Class B compliance for unattended appliances. PPS lets engineers reassign UART to the display module without spinning a new PCB revision. Per-cell 1.8 V to 5.5 V support accommodates both 3.3 V logic and 5 V relay drivers on the same board.
Recommended
Industrial Sensor Transmitter (4-20 mA / IO-Link)
Industrial loop-powered transmitters rely on the PIC16LF18344T-I/GZ because the 1.8 V minimum supply boots from a 4-20 mA current loop with a low-drop linear regulator, while 32 MIPS executes IO-Link stack and self-diagnostics on-chip. The hardware CLC combines sensor signals (e.g., level crossing) without CPU wakeups, slashing average current in line-powered loops. The 10-bit ADC with internal reference is sufficient for process variables; the 5-bit DAC generates loop-test tones during commissioning. Recommended companions: MAX31850 thermocouple digitizer and ADuM1411 quad isolator.
Recommended
Capacitive Touch User Interface
The PIC16LF18344T-I/GZ supports up to 17 capacitive-touch electrodes via mTouch with the on-chip ADC and CTMU charge-timing peripherals, eliminating dedicated touch ICs in white-good and appliance HMIs. CLC peripherals implement gesture state-machines in hardware so the CPU can stay in XLP sleep until a recognized tap is detected, dramatically lowering standby current. PPS routes touch and PWM to any GPIO for last-minute mechanical redesigns. With 7 KB Flash the part can store multi-language firmware and bootloader images for in-field updates.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF18344T-I/GZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18344T-I/GZ | PIC16LF18324T-I/GZ | PIC16LF18344-I/GZ | PIC16LF18326-I/GZ | PIC16LF1829-I/GZ |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-UQFN EP 4x4 mm | 20-UQFN EP 4x4 mm - same | 20-UQFN EP 4x4 mm - same | 20-UQFN EP 4x4 mm - same | 20-UQFN EP 4x4 mm - same | 20-UQFN EP 4x4 mm - same |
| Supply Voltage | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 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 |
| Flash Memory | 7 KB | 7 KB | 4 KB | 7 KB | 3.5 KB | 14 KB |
| RAM | 512 bytes | 512 B | 512 B | 512 B | 256 B | 1 KB |
| EEPROM | 256 bytes | 256 B | 256 B | 256 B | 256 B | 256 B |
| CPU Speed | 32 MHz / 32 MIPS | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Peripheral Pin Select (PPS) | Yes | Yes | Yes | Yes | Yes | No (older gen) |
| Automotive / FuSa | No FuSa | FuSa (IEC 60730 Class B) | No FuSa | No FuSa | No FuSa | No FuSa |
Key Differentiators
- PPS remap absent on PIC16LF1829 predecessor (vs PIC16LF1829-I/GZ)
- Wider 1.8V minimum vs PIC12/16 baseline (vs PIC16LF193x family)
- CIPs consolidate hardware state machines (vs PIC16F18344T-I/GZ identical peripherals)
Design Notes
Estimated: at 32 MHz active, the PIC16LF18344 draws roughly 5 mA at 3.3 V. With nanoWatt XLP sleep set to VREGPM=1 and all peripherals clock-gated, sleep current can fall below 1 uA. For battery-life estimates use (Tactive_mA x D) + (Tsleep_uA x (1-D)) / 1000 mAh, where D is duty cycle. Decoupling: place a 100 nF X7R within 5 mm of VDD and a 1 uF-10 uF bulk cap shared with the radio. Power dissipation estimated at 16.5 mW active / 3.3 uW sleep keeps thermal rise negligible in the 4x4 mm UQFN EP.
The 20-UQFN EP exposed thermal pad must be soldered to a continuous ground pour with at least 8 thermal vias (0.3 mm drill, 0.65 mm pitch) to keep theta_JA below 35 C/W. PPS allows digital peripherals to be remapped to any GPIO after layout, but routing congestion still benefits from placing the radio SPI pair near the antenna feed on the breakout. Keep ICSP lines RA0/RA1 on accessible test pads so MPLAB ICD 4 can re-flash prototypes without rework.
PIC16LF (1.8V to 3.6V) and PIC16F (2.3V to 5.5V) are not interchangeable at the supply rail - substituting one for the other on a 5V bus can damage the LF part. The 20-UQFN EP variant is not breadboard friendly; plan PCB rev 2 if you intend to swap packages. RA3 is MCLR-only weak pull-up; it cannot reliably wake the chip from deep sleep via external interrupt, use RB0/INT or IOC instead.
Compliance Information
RoHS and REACH compliant per Microchip material declarations. Industrial temperature grade (-40C to +85C). AEC-Q100 qualified variants exist under PIC16F18344-I/SSVAO automotive ordering codes; the LF tape-and-reel GZ variant is not AEC-Q100.
