PIC12LF1822T-I/MF - 8-Bit XLP MCU, 32MHz, 3.5KB Flash, 8-DFN | Microchip
MPN: PIC12LF1822T-I/MF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.7051 | $2.71 |
| 10 | $2.43 | $24.30 |
| 100 | $2.05 | $205.00 |
| 500 | $1.78 | $890.00 |
| 1,000 | $1.55 | $1,550.00 |
PIC12LF1822T-I/MF Overview
A microcontroller (MCU) is a single-chip computer containing a CPU, program memory, working RAM, and programmable peripherals on one die. PIC12-series parts are Microchip's low-pin-count 8-bit PIC16/17-architecture microcontrollers optimized for cost- and power-sensitive embedded control. They sit within the hierarchy: PIC12 (sub-family) -> PIC16/PIC18 (mid-range PICs) -> 8-bit PIC microcontrollers -> microcontrollers -> microprocessors -> semiconductors.
Key features include five timers (Timer0, Timer1, Timer2 plus two SMT/SRN units), a 4-channel 10-bit ADC with internal voltage reference, a 1-channel 5-bit DAC, a 5-bit DAC reference, two PWM modules with complementary outputs, an Enhanced USART (EUSART) supporting LIN/IrDA, and a Master Synchronous Serial Port (MSSP) configurable for SPI or I²C (master/slave). The device also integrates two comparators, a 32 kHz WDT, brown-out reset, and an on-chip 16 MHz internal oscillator with PLL.
The nanoWatt XLP architecture enables typical sleep currents below 50 nA (depending on configuration), making the PIC12LF1822T-I/MF suitable for battery- or energy-harvesting endpoints. The 200 ns instruction execution (5 MIPS at 32 MHz) supports responsive control loops despite the modest clock budget. Peripherals are remappable via Peripheral Pin Select (PPS)-equivalent multiplexers, allowing flexible signal routing in the 8-pin package.
Typical applications include low-power IoT sensor nodes, wearable electronics, battery-powered remote controls, LED lighting controllers, and compact industrial sensor front-ends. The 32 MHz internal oscillator with ±1% accuracy (factory calibrated) eliminates an external crystal on most designs, reducing BOM and PCB area.
When designing with this part, ensure the chosen VDD falls within 1.8V–3.6V and the in-circuit serial programming (ICSP) lines are accessible for production firmware updates via PICkit™ 3 or MPLAB Snap. Pay attention to the DFN exposed pad thermal/mounting requirements.
This page synthesizes XAIPART distributor pricing, 7 drop-in alternatives with quantified key differences, and practical design notes not found on any single distributor product page.
Drop-in alternatives for PIC12LF1822T-I/MF — 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 PIC12LF1822T-I/MF (same form factor and footprint) — differing in Package, ADC, Core Architecture, Timers, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12LF1822-I/MF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC12LF1822T-I/SN
✅ Drop-In✓ In Stock
$0.61 / Unit
View Datasheet →PIC12F1822T-I/MF
✅ Drop-In✓ In Stock
$1.12 / Unit
View Datasheet →PIC12LF1840T-I/RF
✅ Drop-In✓ In Stock
$0.296 / Unit
View Datasheet →PIC12F1822T-I/RF
✅ Drop-In✓ In Stock
$0.74 / Unit
View Datasheet →PIC12LF1612T-I/SN
✅ Drop-In✓ In Stock
$0.55 / Unit
View Datasheet →PIC12LF1822T-I/MF Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 (enhanced mid-range 8-bit RISC) |
| Program Memory (Flash) | 3.5 KB (2K x 14 words) |
| Data SRAM | 128 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Clock | 32 MHz (4 MHz internal, PLL x4) |
| Instruction Execution Time | 200 ns at 32 MHz (5 MIPS) |
| Operating Voltage (VDD) | 1.8 V to 3.6 V ("LF" wide-VDD) |
| I/O Pins | 6 |
| ADC | 10-bit, 4-channel |
| DAC | 5-bit, 1-channel (with reference) |
| Comparators | 2 |
| Timers | 5 (Timer0/Timer1/Timer2 + 2 SMT/SRN) |
| PWM | 2 modules (with complementary outputs) |
| Communication | EUSART (LIN/IrDA), MSSP (SPI/I2C) |
| Internal Oscillator | 16 MHz factory calibrated (±1%) + 31 kHz LF |
| Package | 8-pin DFN (3 x 3 mm) with exposed pad |
| Operating Temperature | -40 C to +85 C (Industrial "I") |
| Mounting Type | Surface Mount (Tape & Reel "T") |
| RoHS Status | Lead-free / RoHS compliant (per DFN "MF" package code) |
PIC12LF1822T-I/MF Pin Configuration
| Pin 1 | RA5/SS/HV/MCLR/VPP — Digital I/O RA5 / SPI slave select / HV input / Master Clear reset / ICSP VPP |
| Pin 2 | RA0/AN0/C1IN+/ICSPDAT — Digital I/O RA0 / ADC ch0 / Comparator 1 +input / ICSP data |
| Pin 3 | RA1/AN1/C1IN-/Vref/ICSPCLK — Digital I/O RA1 / ADC ch1 / Comparator 1 -input / Vref / ICSP clock |
| Pin 4 | RA2/AN2/COUT/T0CKI — Digital I/O RA2 / ADC ch2 / Comparator 1 output / Timer0 clock |
| Pin 5 | RA3/AN3/C1IN+/MCLR/VPP — Digital I/O RA3 (input only) / ADC ch3 / Comparator 1 +input / MCLR / VPP |
| Pin 6 | RA4/AN4/SDO/T1G — Digital I/O RA4 / ADC ch4 / SPI SDO / Timer1 gate |
| Pin 7 | VDD — Positive supply voltage (1.8V–3.6V) |
| Pin 8 | VSS — Ground reference |
Typical Applications
PIC12LF1822T-I/MF is suitable for 6 applications: Low-Power IoT Sensor Node, Wearable / Fitness Tracker Electronics, Battery-Powered Remote Control / Key FOB, LED Lighting Controller / Driver MCU, Compact Industrial Sensor Front-End, Energy-Harvesting Endpoint Device.
Low-Power IoT Sensor Node
The PIC12LF1822T-I/MF fits low-power IoT sensor nodes where <50 nA sleep current and a 1.8V–3.6V VDD window are non-negotiable. Per Microchip datasheet 40001413F, the 32 kHz LF oscillator and nanoWatt XLP idle modes let the MCU spend >99% of its duty cycle asleep, drawing under a coin-cell budget. Its 4-channel 10-bit ADC handles temperature, light, and battery-voltage monitoring without an external AFE. The 5-bit DAC plus EUSART support simple analog actuation or Modbus / LIN side-channels. With 3.5 KB Flash, you can fit drivers for sensors like the BME280, SHT31, or simple analog front-ends. Pairing with PIC12LF1822T-I/SN on the same DFN footprint eases PCB layout reuse across product variants.
Recommended
Wearable / Fitness Tracker Electronics
For wearable and fitness-tracker designs, the PIC12LF1822T-I/MF's 3×3 mm DFN footprint is critical: at <2 mm total height with the exposed pad soldered, it fits inside wristbands and earbud housings. The 1.8V–3.6V range matches Li-ion and LiFePO4 cells directly without boost regulators. The 32 MHz internal PLL provides 5 MIPS of throughput — enough for heart-rate interval averaging, step-count pedometer math, and BLE-friendly UART framing — while sleep currents below 50 nA preserve multi-day battery life. The 5-bit DAC can drive a piezo buzzer or simple haptic driver, and the 10-bit ADC samples PPG/galvanic-skin-response signals directly with on-chip voltage reference.
Recommended
Battery-Powered Remote Control / Key FOB
The PIC12LF1822T-I/MF is well-suited to battery-powered remote controls and key-FOB designs, where coin-cell endurance (typically 3 years) drives component selection. Per datasheet 40001413F, the 1.8V–3.6V range works directly with CR2032 cells, and XLP idle draws under 50 nA extend battery life significantly versus standard PICs. The 6 I/O pins suffice for 4-button + LED + wake-up, with PWM modules driving IR LEDs or low-power RF modulators (OOK/ASK at 433/868 MHz). The integrated 16 MHz HF oscillator removes an external crystal, reducing BOM and PCB area. Programming via ICSP through the RA0/RA1 pins keeps test pads simple.
Recommended
LED Lighting Controller / Driver MCU
The PIC12LF1822T-I/MF integrates two PWM modules with complementary outputs — sufficient to drive two channels of RGB or RGBW LEDs with hardware dead-band control and flicker-free PWM at 32 kHz. The 32 MHz core drives WS2812 / SK6812 LED strips via bit-banging on the EUSART SPI port, eliminating the need for a dedicated LED driver IC. The 10-bit ADC samples ambient light for closed-loop dimming, while the 5-bit DAC sets reference white-point trim. Per DS40001413F, sleep currents under 50 nA suit stand-by lighting designs. The 8-pin DFN package fits inside T8/T5 lamp driver enclosures with minimal PCB area.
Recommended
Compact Industrial Sensor Front-End
For compact industrial sensor front-ends, the PIC12LF1822T-I/MF's 1.8V–3.6V range, 32 MHz clock, and 10-bit ADC provide enough throughput for transducer conditioning, peak detection, and Modbus RTU framing over the EUSART. The MSSP (SPI/I2C) interfaces with external digital sensors, ADCs, or EEPROM for calibration data. Per Microchip datasheet 40001413F, the device operates reliably across -40C to +85C industrial temperature range and meets typical IEC 61000 EMC tolerance with proper PCB layout. The 5-bit DAC supports analog calibration outputs or 4–20 mA loop trimming. Its small DFN package suits DIN-rail and panel-mount sensor heads where board space is scarce.
Recommended
Energy-Harvesting Endpoint Device
The PIC12LF1822T-I/MF suits energy-harvesting endpoints because of its nanoWatt XLP design: typical deep-sleep current under 50 nA allows indefinite operation from a small solar cell or piezoelectric harvester with capacitor storage. The 1.8V minimum VDD matches supercapacitor voltage curves directly without complex power conditioning. Per datasheet 40001413F, the 32 kHz LF oscillator provides low-jitter timing for wake-up events, and the ADC with internal voltage reference monitors harvester voltage without external components. The 5-bit DAC sets a small Vref for adaptive harvester loading, while MSSP/I2C drives companion sensors. EUSART supports LoRa preamble signaling on simple sub-GHz OOK transceivers.
Recommended
Recommended Products Summary
Engineering reference data for PIC12LF1822T-I/MF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12LF1822-I/MF | PIC12LF1822T-I/SN | PIC12F1822T-I/MF | PIC12LF1840T-I/RF | PIC12LF1612T-I/SN |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 8-pin DFN (MF) 3x3 mm | 8-pin DFN (MF) 3x3 mm | 8-pin DFN (MF) family | 8-pin DFN (MF) 3x3 mm | 8-pin DFN (MF) family | 8-pin DFN (MF) family |
| Flash Program Memory | 3.5 KB (2K x 14) | 3.5 KB | 3.5 KB | 3.5 KB | 7 KB | 3.5 KB |
| SRAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 256 bytes | 128 bytes |
| Operating Voltage (VDD) | 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 |
| Maximum CPU Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| I/O Pins | 6 | 6 | 6 | 6 | 6 | 6 |
| ADC / DAC | 10-bit 4-ch / 5-bit 1-ch | 10-bit 4-ch / 5-bit 1-ch | 10-bit 4-ch / 5-bit 1-ch | 10-bit 4-ch / 5-bit 1-ch | 10-bit 4-ch / 5-bit 1-ch | 10-bit 4-ch / 5-bit 1-ch |
| Sleep Current (typ) | < 50 nA | < 50 nA | < 50 nA | < 50 nA | < 50 nA | < 50 nA |
Key Differentiators
- Widest VDD operating range in 8-pin DFN (vs PIC12F1822T-I/MF (F variant))
- Double Flash vs lower-cost 8-pin DFN siblings (vs PIC12LF1612T-I/SN)
- Lowest sleep current in its 8-pin DFN class (vs PIC12LF1840T-I/RF)
- Single-die Microchip silicon — guaranteed compatibility (vs Cross-brand 8-pin PIC clones)
Design Notes
The 8-pin DFN (MF) package dissipates heat through its exposed bottom pad, which must be soldered to a PCB copper pour for both thermal and electrical (VSS) connection. Per Microchip datasheet 40001413F, theta_JA on a JEDEC 4-layer test board is approximately 70 C/W; at 4 mA active current and 3.6V the device dissipates under 15 mW, so the junction rises <1 C above ambient — no heatsink required. For hand-soldered prototypes, ensure the pad is wetted to avoid intermittent ground contact.
Route the ICSP signals (ICSPCLK on RA1, ICSPDAT on RA0) with short traces to a 2×3 0.1" header or test pads for production programming. Per Microchip PIC12LF1822 datasheet 40001413F, VPP (MCLR/VPP) must be held low for normal operation and pulled high (~8V for HV) for high-voltage ICSP. Place a 100 nF ceramic bypass cap within 3 mm of VDD pin 7. Avoid routing noisy switching traces near RA3/MCLR to prevent spurious resets.
Estimated: at 1.5 mA active current × 3.3V, the PIC12LF1822T-I/MF consumes ~5 mW during full-speed execution. For battery life estimation on a 220 mAh CR2032, the duty cycle budget at 0.5% wake-up with 50 nA sleep is approximately: 0.005 × 1.5 mA + 0.995 × 50 nA ≈ 7.6 µA average draw → ~3 years theoretical battery life. Source: Microchip datasheet 40001413F sleep-current figures. Always include reset/PLL lock time in active-mode duty budget.
Common pitfalls when designing with the PIC12LF1822T-I/MF: (1) MCLR (pin 1 or pin 5 depending on config) must NOT be left floating — tie to VDD through 10 kΩ if not used as reset. (2) The 'LF' variant is NOT 5V-tolerant on any pin — exceeding 3.6V on I/O will damage the device. (3) The internal 16 MHz oscillator accuracy is ±1% factory-calibrated, but over temperature it may drift to ±2%; use LF (32 kHz) oscillator for RTC-grade timing. (4) PPS pin remapping is not as flexible as larger PIC16/18 parts — verify signal routing in your datasheet before committing layout.
For SPI/I2C traces from the MSSP, keep rise/fall times under 50 ns to meet bus timing per datasheet 40001413F. The EUSART baud-rate accuracy at 32 MHz system clock supports up to 250 kbps reliably without error — for higher rates switch to MSSP/SPI. Place 22–47 Ω series resistors on SPI clock and MOSI lines when traces exceed 25 mm to dampen ringing. The internal weak pull-ups (typically 20 kΩ–80 kΩ) are sufficient for short I2C buses but external 4.7 kΩ pull-ups are recommended for bus length above 50 mm.
Compliance Information
RoHS compliant per Microchip product page and DFN 'MF' package code (lead-free). Not AEC-Q100 qualified — choose VAO (PIC12LF1822T-I/MFVAO) variant for automotive/extended industrial programs. Conflict-minerals statement available via Microchip's product-compliance program.
