PIC16LF1829T-I/GZ - 8-bit MCU, 14KB Flash, 32MHz, 20-UQFN | Microchip
MPN: PIC16LF1829T-I/GZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.18 | $2.18 |
| 10 | $1.96 | $19.60 |
| 100 | $1.72 | $172.00 |
| 500 | $1.51 | $755.00 |
| 1,000 | $1.28 | $1,280.00 |
PIC16LF1829T-I/GZ Overview
An 8-bit microcontroller (MCU) is a single-chip processor that integrates CPU, RAM, non-volatile program memory, and peripherals on one silicon die. Compared with 32-bit Cortex-M MCUs, 8-bit PIC MCUs prioritize predictable interrupt latency, low unit cost, and ultra-low standby power - making them a staple in consumer appliances, sensor nodes, and battery-powered devices where BOM cost dominates. Within Microchip's hierarchy, the PIC16F/LF1829 family sits at the upper end of the mid-range 8-bit lineup: more memory and peripherals than PIC12, simpler and cheaper than dsPIC or PIC32.
Key feature differentiators include 14 KB self-programmable Flash, an integrated mTouch™ capacitive-touch sensing peripheral, 12 channels of 10-bit ADC, enhanced PWM with up to 6 outputs, multiple serial interfaces (EUSART, I2C, SPI), and on-chip mTouch capacitive touch hardware that eliminates many external components. The "LF" prefix denotes the wide-voltage 1.8V-3.6V variant versus the "F" 1.8V-5.5V variant, an important selection lever for cell-powered designs.
Typical applications include capacitive touch buttons and sliders (mTouch), low-power sensor nodes, lithium-cell IoT endpoints, simple motor control (BLDC ceiling-fan commutation, small DC pumps), and consumer white-goods HMI panels. The 32 MHz core, 8 K x 14 Flash array, and robust peripherals also suit LED-driving strips and remote control units.
When designing with the PIC16LF1829T-I/GZ, verify your vector table against the specific device header file in MPLAB X and consider the larger-footprint 28/40-pin PIC16F1829 siblings if you need more I/O or ADC channels. A 0.1 uF decoupling capacitor within 5 mm of VDD is essential for ADC accuracy.
This page synthesizes distributor pricing from DigiKey and Mouser, drop-in Microchip-package alternatives, and practical design notes drawn from the manufacturer's datasheet and MPLAB development environment - a curated combination not available on any single distributor or manufacturer page.
Drop-in alternatives for PIC16LF1829T-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 PIC16LF1829T-I/GZ (same form factor and footprint) — differing in ADC, Operating Temperature, Package, Program Memory (Flash), Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1829-I/GZ
✅ Drop-In✓ In Stock
$0.69 / Unit
View Datasheet →PIC16LF1829-E/GZ
✅ Drop-In✓ In Stock
$1.14 / Unit
View Datasheet →PIC16F1829T-I/GZ
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16LF1828T-I/GZ
✅ Drop-In✓ In Stock
$1.79 / Unit
View Datasheet →PIC16LF15344T-I/GZ
✅ Drop-In✓ In Stock
$0.78 / Unit
View Datasheet →PIC16LF1829T-I/GZ Maximum Ratings & Electrical Characteristics
| Product Series | PIC16F/LF182X |
| Core Architecture | 8-bit PIC RISC |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 1 KB |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage Range | 1.8 V to 3.6 V (LF variant) |
| I/O Pins | 18 |
| Package | 20-UQFN (4x4 mm) |
| Package Designator | GZ |
| Mounting Type | Surface Mount |
| ADC | 10-bit, 12 channels |
| Capacitive Touch | mTouch (on-chip) |
| Operating Temperature | -40 C to +85 C (industrial) |
| RoHS Status | Compliant |
| MSL Level | 1 |
| Lead-Free | Yes |
| Programming/Debug | ICSP via MPLAB PICkit/ICD/Snap |
PIC16LF1829T-I/GZ Pin Configuration
| Pin 1 | Vss — Ground reference |
| Pin 2 | RA0/AN0/ICSPDAT — Port A bit 0 / analog input / ICSP data |
| Pin 3 | RA1/AN1 — Port A bit 1 / analog input |
| Pin 4 | RA2/AN2 — Port A bit 2 / analog input |
| Pin 5 | RA3/MCLR/VPP — Master Clear / programming voltage |
| Pin 6 | RA4/AN3 — Port A bit 4 / analog input |
| Pin 7 | RA5/AN4 — Port A bit 5 / analog input |
| Pin 8 | Vdd — Positive supply voltage |
| Pin 9 | RB4/AN11 — Port B bit 4 / analog input 11 |
| Pin 10 | RB5/AN10 — Port B bit 5 / analog input 10 |
| Pin 11 | RB6/ICSPCLK — Port B bit 6 / ICSP clock |
| Pin 12 | RB7/ICSPDAT — Port B bit 7 / ICSP data |
| Pin 13 | RC0 — Port C bit 0 |
| Pin 14 | RC1 — Port C bit 1 |
| Pin 15 | RC2 — Port C bit 2 |
| Pin 16 | RC3 — Port C bit 3 |
| Pin 17 | RC4 — Port C bit 4 |
| Pin 18 | RC5 — Port C bit 5 |
| Pin 19 | RC6 — Port C bit 6 |
| Pin 20 | RC7 — Port C bit 7 |
Typical Applications
PIC16LF1829T-I/GZ is suitable for 6 applications: Capacitive Touch HMI Panels, Battery-Powered IoT Sensor Nodes, BLDC Ceiling Fan Commutation, Consumer White Goods Control Boards, LED Lighting Drivers and Strip Controllers, Remote Control and Wireless Key Fob.
Capacitive Touch HMI Panels
The PIC16LF1829T-I/GZ is purpose-built for capacitive touch interfaces thanks to its on-chip mTouch peripheral. Its 12-channel mTouch engine, which supports both buttons and sliders, samples capacitances with microsecond acquisition windows and runs the noise-robust algorithms documented in Microchip application note TB1182. Engineers building 4-8 button kitchen-appliance panels, washing-machine HMI, and slider-based dimmer controls find the 14 KB Flash ample for state-machine UI logic and capacitive-induced-event debounce. Compared to designing touch with an external charge-time-measurement IC plus an op-amp, integrating touch on-chip reduces BOM, eliminates RC tuning, and frees the 32 MIPS CPU for UART/I2C housekeeping.
Recommended
Battery-Powered IoT Sensor Nodes
For wireless sensor endpoints running from CR2032 or 2x AA cells, the PIC16LF1829T-I/GZ's 1.8V-3.6V wide operating range and nanoWatt XLP sleep modes (sub-1 uA typical) make it a strong choice to pair with a sub-GHz or BLE radio module. The 32 MHz core offers MIPS headroom for sensor-fusion algorithms, while the 1 KB RAM and 14 KB Flash accommodate BLE stack snips or custom Modbus-over-UART. The 20-UQFN 4x4 mm footprint fits inside miniature sensor PCBs such as those required for wearables, leak detectors, and remote thermostats. For very long battery life, configure the LF1829 for Sleep with WDT or RTC wake, leaving radio and MCU dormant between transmissions.
Recommended
BLDC Ceiling Fan Commutation
The PIC16LF1829T-I/GZ's 32 MHz throughput, 6-channel PWM, and 12-channel 10-bit ADC for back-EMF sensing cover the essentials of 1-shunt or 3-shunt BLDC sensorless commutation. The PWM module supports complementary outputs with programmable dead-time insertion, key for safe half-bridge drive in fan topology. Its peripheral set also includes a Capture/Compare module, useful for closed-loop speed feedback from a Hall or tachogenerator. The compact 20-UQFN allows the entire motor controller to fit on a 25x25 mm PCB inside the fan hub enclosure. Compared with 32-bit alternatives, the LF1829 cuts BOM cost and keeps latency predictable at the high-PWM update rates typical of 20-30 kHz commutation loops.
Recommended
Consumer White Goods Control Boards
Washing machines, dishwashers, microwave ovens, and induction cookers all rely on a small MCU that can mix PWM, ADC, UART/MICROWIRE, and discrete I/O with rock-solid EMC behavior. The PIC16LF1829T-I/GZ provides 18 I/O pins - sufficient for sensor inputs (water-level, door, NTC thermistor), keypad, buzzer, and triac-fired heater drivers via opto-coupled outputs. Its 32 MHz MIPS budget supports PID loops for temperature control or fuzzy wash-cycle algorithms, with 14 KB Flash providing headroom for localized firmware variants. The wide 1.8V-3.6V supply supports direct 3V3 LDO operation from a 5V or 12V appliance rail after rectification.
Recommended
LED Lighting Drivers and Strip Controllers
RGB and tunable-white LED strips need 3-4 channel high-resolution PWM to control color-mixing and intensity. The PIC16LF1829T-I/GZ provides up to 6 enhanced PWM channels in a single die, enough for full RGBW control plus a separate status LED. With 32 MIPS the MCU can drive WS2812B-style LED protocols via software bit-banging or DMA-assisted SPI. Designers can implement DMX512, DALI Lite, or proprietary RF-remote-controlled LED strips using the embedded EUSART and CCP modules. The part's low shutdown current also benefits battery-powered ambiance LED bars.
Recommended
Remote Control and Wireless Key Fob
Battery-powered IR/RF remotes benefit hugely from sub-1 uA sleep and small package sizes. The PIC16LF1829T-I/GZ, with its 4x4 mm UQFN footprint and nanoWatt sleep, is a strong hub MCU to drive sub-GHz transmitters like the Microchip MRF89XA or MICRF112. Its EUSART integrates directly with these radios in SPI mode, freeing the application timers. The 14 KB Flash is enough for IR-protocol libraries (NEC, RC5, SIRC) plus a small BLE-or-LoRa pairing stack. The device's wide temperature range and ESD-robust I/O suit garage door openers and industrial key-fobs.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1829T-I/GZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1829-I/GZ | PIC16LF1829-E/GZ | PIC16F1829T-I/GZ | PIC16LF1828T-I/GZ | PIC16LF15344T-I/GZ |
|---|---|---|---|---|---|---|
| Package | 20-UQFN (4x4 mm GZ) | 20-UQFN (4x4) - same | 20-UQFN (4x4) - same | 20-UQFN (4x4) - same | 20-UQFN (4x4) - same | 20-UQFN (4x4) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Operating 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 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Flash Memory | 14 KB | 14 KB | 14 KB | 14 KB | 8 KB (-43%) | 7 KB (-50%) |
| RAM | 1 KB | 1 KB | 1 KB | 1 KB | 256 B (-75%) | 4 KB (+300%) |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Temperature | -40 C to +85 C (industrial) | -40 C to +85 C | -40 C to +125 C (extended) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Capacitive Touch (mTouch) | Yes (on-chip) | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Lowest-power LF variant of the PIC16F/LF1829 in same package (vs PIC16F1829T-I/GZ)
- Higher Flash density than the 1828 sibling in the same UQFN-20 footprint (vs PIC16LF1828T-I/GZ)
- mTouch capacitive touch built in - no companion IC required (vs External CTMU or charge-time cap-touch IC)
Design Notes
Place a 0.1 uF ceramic decoupling capacitor within 5 mm of the Vdd pin and a bulk 1-10 uF tantalum or ceramic cap at the supply rail. For picoPower apps, populate only the local 0.1 uF to achieve the datasheet's nanoWatt sleep numbers; large bulk caps can charge up the decoupling network during Sleep, increasing effective sleep current. Estimated: with 0.1 uF local only, expect < 1.5 uA Sleep current in nW RTCC mode at 3V, 25 C - per Microchip PIC16LF1829 datasheet section 31 (Electrical Characteristics).
Route the UQFN exposed pad (under the package body) to a Vss copper pour through 25-50 thermal vias. The UQFN-20 GZ datasheet states the lead frame and the central pad share the same ground potential; failing to solder that pad can raise theta_JA above 100 C/W. For high-vibration environments, the central pad also provides mechanical adhesion. Reference TB3147 for UQFN land-pattern details.
When designing with ICSP, do not add protective resistors or capacitors on RB6 (ICSP/ICSPCLK) and RB7 (ICSP/ICSPDAT) - they will load programmer signals and cause programming failures. Keep MCLR/VPP routed with a 1-10 kohm pull-up per datasheet recommendations but no more than 100 pF of capacitance. Also note the CR2032 voltage (typically 2.8-3.0 V max) falls well within the LF1829 range, so 3.3 V designs can directly connect the cell without an LDO.
For analog ADC accuracy in noisy motor-control or LED-driver boards, place a 100 nF NPO/C0G capacitor across the analog Vdd rail (separately filtered from digital Vdd) and reference the ADC to an internal FVR instead of Vdd. Estimated: this mitigates up to ~3 LSBs of noise on 10-bit conversions in a 30 kHz PWM environment, per Microchip AN2266 (Achieving High ADC Accuracy with PIC18 and PIC16 MCUs).
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified (no automotive grade); for automotive specify a Q-version. Lead-free and halogen-free per Microchip's substance-compliance records.
