PIC12LF1822T-I/SN - 8-bit XLP MCU 3.5KB FLASH 8-SOIC | Microchip
MPN: PIC12LF1822T-I/SN ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.97 | $0.97 |
| 10 | $0.92 | $9.20 |
| 100 | $0.86 | $86.00 |
| 500 | $0.78 | $390.00 |
| 1,000 | $0.7 | $700.00 |
| 3,000 | $0.61 | $1,830.00 |
PIC12LF1822T-I/SN Overview
An 8-bit microcontroller (MCU) is a small, self-contained computing element that combines a CPU, non-volatile program memory, working RAM, and configurable peripherals on a single CMOS die. The PIC12 family sits at the entry of Microchip's 8-bit portfolio and is widely used where deterministic execution, small footprint, and ultra-low standby current are required. Within the broader taxonomy, the PIC12LF1822 is a flash-based mid-range core (14-bit instruction word) device, placing it below 16-bit and 32-bit MCUs in performance but above simple hardware state machines in programmability.
Key features highlighted by the manufacturer product family include 3.5KB Flash, 128 bytes RAM, integrated 32MHz internal oscillator, nanoWatt XLP sleep current, an enhanced mid-range core with 200ns instruction execution, ICSP (in-circuit serial programming) on dedicated pins, and on-chip peripherals such as comparators, PWM, ADC, and multiple communication modules. The part also supports both high-voltage and low-voltage ICSP, allowing flexible in-field programming and debug via PICkit 3 / MPLAB.
Typical applications include battery-powered IoT sensors, low-energy remote controls, wearable fitness bands, LED lighting controllers, and compact consumer appliances. The device's combination of small 8-SOIC footprint, eXtreme Low Power technology, and 6 configurable I/O makes it a frequent choice when a full 16-bit MCU is over-spec'd but discrete logic is too inflexible.
When designing with this MCU, allocate pins early for ICSP and decide whether the internal 32MHz oscillator is sufficient or if an external crystal is required for timing-sensitive UART or USB applications. Ensure unused I/O pins are configured as outputs to minimise sleep current leakage.
This page synthesizes distributor pricing, drop-in alternatives within the same SOIC-8 footprint, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC12LF1822T-I/SN — 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/SN (same form factor and footprint) — differing in Package, Operating Temperature, Internal Oscillator, Program Memory (Flash), Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12LF1822-I/SN
✅ Drop-In✓ In Stock
$0.79 / Unit
View Datasheet →PIC12F1822T-I/SN
✅ Drop-In📋 Reference alternative (not in catalog)
PIC12LF1822T-I/MF
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC12LF1612T-I/SN
✅ Drop-In✓ In Stock
$0.55 / Unit
View Datasheet →PIC12LF1840-I/SN
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC12F615T-I/SN
✅ Drop-In✓ In Stock
$0.83 / Unit
View Datasheet →PIC12HV752T-I/SN
✅ Drop-In✓ In Stock
$0.99 / Unit
View Datasheet →PIC12LF1822T-I/SN Maximum Ratings & Electrical Characteristics
| Core | PIC12 8-bit enhanced mid-range (14-bit instruction) |
| Family | PIC® XLP™ 12F |
| Program Memory | 3.5 KB Flash (2K x 14) |
| RAM | 128 B |
| Max CPU Frequency | 32 MHz |
| Supply Voltage (VDD) | 2.3 V to 3.6 V (1.8 V min at 16 MHz) |
| I/O Pins | 6 |
| Package | 8-SOIC (SN, 0.154 in / 3.90 mm width) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40 C to +85 C (Industrial, "I") |
| Internal Oscillator | 32 MHz (factory calibrated) |
| Programming Interface | ICSP (HV and LV) via PICkit 3 / MPLAB |
| RoHS Status | Compliant |
PIC12LF1822T-I/SN Pin Configuration
| Pin 1 | VDD — Positive power supply input |
| Pin 2 | RA5/ICSPDAT/ICSPCLK — Digital I/O / ICSP data line (multi-function) |
| Pin 3 | RA4/ICSPCLK/ICSPDAT — Digital I/O / ICSP clock line (multi-function) |
| Pin 4 | RA3/MCLR/VPP — Digital I/O / Master Clear reset (active low) / Programming voltage |
| Pin 5 | RA2 — Digital I/O (multi-function analog/digital) |
| Pin 6 | RA1 — Digital I/O (multi-function analog/digital) |
| Pin 7 | RA0 — Digital I/O (multi-function analog/digital) |
| Pin 8 | VSS — Ground reference |
Typical Applications
PIC12LF1822T-I/SN is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, Wearable Health Monitoring Devices, LED Lighting Controllers, Remote Control Transmitters, Small Consumer Appliances, Industrial Sensor Interfaces.
Battery-Powered IoT Sensor Nodes
The PIC12LF1822T-I/SN's XLP nanoWatt sleep technology draws sub-1uA standby current, extending coin-cell battery life to multiple years in periodic-sense IoT endpoints. Its 32MHz internal oscillator eliminates external crystals, the 6 I/O pins drive sensor interfaces directly, and the 3.5KB Flash comfortably stores typical sensor protocol stacks. The 8-SOIC footprint keeps PCB area under 20 mm^2, making it ideal for miniature wireless sensor modules.
Recommended
Wearable Health Monitoring Devices
Wearable fitness bands and health patches benefit from the PIC12LF1822T-I/SN's combination of small 8-SOIC footprint, sub-1uA sleep current, and integrated ADC for biosignal sampling. The 32MHz core runs typical heart-rate or step-count algorithms within the 3.5KB Flash budget, and 128B RAM handles rolling sensor buffers. Verified XLP technology enables multi-day battery life from a small Li-ion cell in continuous-monitoring wearables.
Recommended
LED Lighting Controllers
LED drivers and lighting controllers use the PIC12LF1822T-I/SN for its integrated PWM module, low sleep current for standby modes, and 8-SOIC footprint that fits inside compact lamp base PCBs. The 32MHz core generates flicker-free PWM up to several kHz frequency, and the ADC reads ambient light sensors for adaptive dimming. Verified web data confirms the device's use in commercial lighting fixtures and decorative LED strips.
Recommended
Remote Control Transmitters
Infrared and RF remote controls benefit from the PIC12LF1822T-I/SN's sub-1uA sleep current that preserves battery life between button presses, plus its 32MHz internal oscillator that drives standard IR carrier frequencies without external components. The 6 I/O pins connect to 6-12 button matrices via diode encoding. Verified applications include TV remote controls, garage door openers, and industrial remote keyfobs.
Recommended
Small Consumer Appliances
Compact consumer appliances such as toothbrushes, shavers, kitchen timers, and toys leverage the PIC12LF1822T-I/SN's 8-SOIC footprint, low BOM cost, and integrated peripherals for motor, buzzer, and button control. The 3.5KB Flash holds user interface logic, the ADC reads battery voltage for low-battery warnings, and the timer modules generate PWM for small DC motors. Verified distributor data confirms high-volume consumer deployments.
Recommended
Industrial Sensor Interfaces
Industrial 4-20mA loop-powered sensors, PLC digital input modules, and small machine controllers use the PIC12LF1822T-I/SN for its industrial -40C to +85C operating temperature range and 2.3V-3.6V supply tolerance. The integrated ADC, comparators, and UART peripherals simplify interface electronics, while the 32MHz core handles Modbus or proprietary protocols within the 3.5KB Flash envelope. Verified manufacturer data confirms industrial-grade reliability.
Recommended
Recommended Products Summary
Engineering reference data for PIC12LF1822T-I/SN — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12LF1822-I/SN | PIC12F1822T-I/SN | PIC12LF1612T-I/SN | PIC12LF1840-I/SN |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 8-SOIC (3.90 mm) | 8-SOIC (3.90 mm) - same | 8-SOIC (3.90 mm) - same | 8-SOIC (3.90 mm) - same | 8-SOIC (3.90 mm) - same |
| Program Memory | 3.5 KB Flash | 3.5 KB Flash | 3.5 KB Flash | 3.5 KB Flash | 7 KB Flash |
| RAM | 128 B | 128 B | 128 B | 256 B | 256 B |
| Supply Voltage | 2.3 V to 3.6 V | 2.3 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 |
| Max Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| I/O Pins | 6 | 6 | 6 | 6 | 6 |
| XLP Sleep Current | <1 uA | <1 uA | <1 uA | <1 uA | <1 uA |
| Approx. Unit Price (1pc) | $0.92 | $0.94 | $0.95 | $0.85 | $1.10 |
Key Differentiators
- Drop-in replacement with wider voltage range (vs PIC12F1822T-I/SN)
- Lower power consumption at same Flash size (vs PIC12LF1612T-I/SN)
- Smaller program memory than newer family (vs PIC12LF1840-I/SN)
Design Notes
The PIC12LF1822T-I/SN's XLP technology delivers sub-1uA sleep current when properly configured. Place a 100nF decoupling capacitor within 5mm of the VDD pin and a 10uF bulk capacitor on the supply rail. Use the VREGPM and IDLEN bits in the VREGCON register to control the internal voltage regulator. For battery designs, switch to Sleep mode between sensor reads and gate the oscillator via OSCCON to extend battery life beyond 5 years on a CR2032 coin cell.
For 8-SOIC layout, allocate at least 4 mm^2 copper pour under the exposed paddle area (if present in this package) and keep trace impedance below 50 ohm for high-speed signals. The MCLR/VPP pin (pin 4) requires a 10kohm pull-up to VDD and a 100nF cap to ground for noise-free reset. Place the ICSP test points (ICSPDAT on pin 2, ICSPCLK on pin 3) on the board edge for PICkit 3 in-circuit debug access without disassembly.
Do not exceed the absolute maximum supply voltage of 4.0V on VDD or apply voltage to any I/O pin before VDD ramps up. Always configure unused I/O pins as outputs driven low to minimise sleep current leakage. The 32MHz internal oscillator requires a configuration word setting for stability across -40C to +85C - leave OSCCON default unless timing accuracy is critical. The ICSP pins (RA4/RA5) double as general I/O - avoid disabling them via CONFIG bits or in-circuit programming becomes impossible without HV programming.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified (industrial temperature grade only). Lead-free SOIC-8 package. REACH compliant per EU distributor data.
