PIC12LF1822T-I/RF - 8-bit 32MHz MCU 3.5KB Flash | Microchip
MPN: PIC12LF1822T-I/RF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.45 | $1.45 |
| 10 | $1.3 | $13.00 |
| 100 | $1.12 | $112.00 |
| 500 | $0.98 | $490.00 |
| 1,000 | $0.86 | $860.00 |
| 3,300 | $0.74 | $2,442.00 |
PIC12LF1822T-I/RF Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM, EEPROM), and peripheral subsystems (ADC, timers, communication interfaces) into one package. The PIC12F/LF1822 occupies the hypernym hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. The 'LF' suffix denotes the wide-voltage 1.8V-3.6V variant optimized for battery-powered applications, while the non-LF 'F' variant targets 2.3V-5.5V rails.
Key features include a 10-bit ADC with up to 12 channels, two 8-bit timers plus one 16-bit timer, enhanced PWM, an MSSP module supporting SPI and I2C, an EUSART for UART, an on-board configurable reference, and an internal 32MHz oscillator. The nanoWatt XLP technology achieves sub-microamp sleep currents, making the part suitable for energy-harvesting and coin-cell designs. Five selectable oscillator modes cover crystals, resonators, and external clocks up to 32MHz.
The PIC12LF1822 uses an enhanced mid-range 8-bit RISC core with a 14-bit instruction word and a single-cycle hardware multiplier. Harvard architecture separates program and data buses for deterministic 8MIPS throughput at 32MHz. On-chip in-circuit debug support allows MPLAB X IDE debugging without an external debug header, though AC244044 is available as an LF-version external header.
Typical applications include IoT sensor nodes, wearable health patches, wireless remote controls, LED driver controllers, battery-powered instrumentation, and small-form-factor consumer devices. The wide 1.8V-3.6V range enables direct connection to single Li-ion, two-coin-cell, or alkaline battery stacks without additional regulation.
Designers should reserve pin 1 (VDD) and pin 8 (VSS) for the lowest-impedance supply decoupling - typically 100nF ceramic placed within 2mm of the pads. The ICSP/ICD pins (RA5/RA0) require isolation resistors in production designs to avoid contention with application circuitry.
This page synthesizes distributor pricing, parametric drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for PIC12LF1822T-I/RF — 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/RF (same form factor and footprint) — differing in ADC, Package, MSL Level, Operating Temperature, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12F1822T-I/RF
✅ Drop-In✓ In Stock
$0.74 / Unit
View Datasheet →PIC12LF1840T-I/RF
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.296 / Unit
View Datasheet →PIC12LF1572T-I/RF
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.79 / Unit
View Datasheet →PIC12F1840T-I/RF
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.84 / Unit
View Datasheet →PIC12LF1612T-I/SN
✅ Drop-In✓ In Stock
$0.55 / Unit
View Datasheet →PIC12LF1612-E/SN
✅ Drop-In✓ In Stock
$0.48 / Unit
View Datasheet →PIC12LF1822T-I/RF Maximum Ratings & Electrical Characteristics
| Core | PIC enhanced mid-range 8-bit RISC |
| Instruction Set Width | 14-bit |
| Maximum CPU Frequency | 32 MHz |
| Program Memory (Flash) | 3.5 KB (2K x 14) |
| Data SRAM | 128 B |
| Data EEPROM | 256 B |
| I/O Pins | 6 (of 8 pins total) |
| ADC | 10-bit, up to 12 channels |
| Timers | 2 x 8-bit, 1 x 16-bit |
| PWM Channels | Enhanced PWM, multiple outputs |
| Communication Interfaces | 1 x MSSP (SPI/I2C), 1 x EUSART (UART) |
| Operating Voltage Range | 1.8 V to 3.6 V (LF variant) |
| Operating Temperature Range | -40 C to +85 C (Industrial) |
| Package | 8-UDFN (3x3 mm) |
| Mounting Type | Surface Mount |
| MSL Level | 1 (unlimited) |
| RoHS Status | Compliant |
| Lead-Free / Halogen-Free | Yes / Yes |
| Debug Support | On-chip ICD + optional AC244044 header |
| Programming Method | ICSP (high-voltage and low-voltage) |
PIC12LF1822T-I/RF Pin Configuration
| Pin 1 | VDD — Positive power supply (1.8V-3.6V) |
| Pin 2 | RA5 — GPIO/ICSP DATA/ADC input |
| Pin 3 | RA4 — GPIO/CLKOUT/ADC input |
| Pin 4 | RA3 — GPIO/MCLR#/ADC reference |
| Pin 5 | RA2 — GPIO/ICSP CLK/ADC input |
| Pin 6 | RA1 — GPIO/ICSPCLK/ADC input |
| Pin 7 | RA0 — GPIO/ICSPDAT/ADC input |
| Pin 8 | VSS — Ground reference |
Typical Applications
PIC12LF1822T-I/RF is suitable for 6 applications: Battery-Powered IoT Sensor Node, Wearable Health Patch, Wireless Remote Control, LED Driver Controller, Battery-Powered Instrumentation, Small Consumer Appliance Control.
Battery-Powered IoT Sensor Node
The PIC12LF1822T-I/RF's 1.8-3.6V operating range and nanoWatt XLP sleep mode (sub-uA) make it ideal for coin-cell IoT sensors reporting temperature, humidity, or motion every few minutes. Its 32MHz CPU handles sensor reads, ADC conversions, and RF-baseband packets without a separate transceiver MCU. The 3.5KB Flash accommodates BLE/Zigbee driver stubs alongside the application state machine, and the 10-bit ADC reads analog sensors directly from a battery divider.
Recommended
Wearable Health Patch
The PIC12LF1822T-I/RF supports ultra-thin wearable patches thanks to its tiny 8-UDFN 3x3 mm package and sub-uA sleep current extending battery life beyond one year on a CR2032 cell. Its 32MHz MIPS throughput runs heart-rate or SpO2 algorithms while the 10-bit ADC digitizes PPG photodiode signals. The MSSP peripheral interfaces directly to I2C optical sensors, and the EUSART streams debug telemetry during development.
Recommended
Wireless Remote Control
Consumer remote controls benefit from the PIC12LF1822T-I/RF's low-power XLP modes that allow multi-year battery life from two AAA cells at 3V. Its enhanced PWM outputs drive IR LED modulation directly while the 32MHz core handles button scanning, RF pairing, and AES-style rolling-code encryption in firmware. The 1.8-3.6V range tolerates end-of-life battery droop without false resets.
Recommended
LED Driver Controller
The PIC12LF1822T-I/RF's enhanced PWM with multiple complementary outputs drives RGB LED strips or high-brightness white LEDs with smooth 16-bit color mixing. Its 32MHz instruction rate supports DMX-512 or APA-102 protocol bit-banging over the EUSART or MSSP. The 10-bit ADC reads ambient light sensors for closed-loop brightness control, and the LF voltage range suits USB-powered 3.3V LED fixtures directly.
Recommended
Battery-Powered Instrumentation
Portable test gear, multimeters, and process calibrators benefit from the PIC12LF1822T-I/RF's wide voltage tolerance and 10-bit ADC for direct transducer excitation. Its 256-byte EEPROM stores calibration constants without external memory, and the 128-byte SRAM buffers measurement results before serial dump. The 32MHz core executes RMS calculations and digital filtering in real time at sub-1mA active current.
Recommended
Small Consumer Appliance Control
The PIC12LF1822T-I/RF powers compact consumer devices such as electric toothbrushes, kitchen scales, and personal grooming tools where board space is critical. Its 8-UDFN 3x3 mm footprint plus 1.8-3.6V direct Li-ion connection eliminates external regulators. The PWM drives vibration motors or buzzer tones, while GPIO wakes on capacitive-touch sensor events to minimize quiescent current between user interactions.
Recommended
Recommended Products Summary
Engineering reference data for PIC12LF1822T-I/RF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12F1822T-I/RF | PIC12LF1840T-I/RF | PIC12LF1572T-I/RF | PIC12F1840T-I/RF | PIC12LF1612T-I/SN | PIC12LF1612-E/SN |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 8-UDFN (3x3 mm) | 8-UDFN (3x3 mm) - same | 8-UDFN (3x3 mm) - same | 8-UDFN (3x3 mm) - same | 8-UDFN (3x3 mm) - same | 8-SOIC | 8-SOIC |
| Operating Voltage | 1.8V to 3.6V | 2.3V to 5.5V | 1.8V to 3.6V | 1.8V to 3.6V | 2.3V to 5.5V | 1.8V to 3.6V | 1.8V to 3.6V |
| Flash Memory | 3.5 KB | 3.5 KB | 7 KB | 3.5 KB | 7 KB | 3.5 KB | 3.5 KB |
| Temperature Grade | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C |
Key Differentiators
- Widest low-voltage operating range in the PIC12 family (vs PIC12F1822T-I/RF)
- Drop-in compatible with PIC12F1840 footprint with doubled memory (vs PIC12F1840T-I/RF)
- Full peripheral set vs lower-cost PIC12LF1572 family (vs PIC12LF1572T-I/RF)
Design Notes
Decouple VDD (pin 1) with a 100nF X7R ceramic capacitor placed within 2 mm of the pad; for high-current switching loads (PWM-driven LEDs or motors) add a bulk 10 uF tantalum or polymer cap in parallel. The nanoWatt XLP sleep mode requires the VDD supply to remain above the 1.8V minimum even during peak transmit bursts - verify with an oscilloscope probe on the actual pad, not at the regulator output.
Route the ICSP/ICD lines (RA0/ICSPCLK, RA1/ICSPDAT) with a 100-ohm series-isolation resistor near the MCU and avoid routing them adjacent to switching PWM or motor traces. The UDFN-8 thermal pad (if present in the footprint) should be soldered to a small copper island connected to VSS for mechanical robustness, even though electrical connection is optional. Estimate: with a 4-layer 1-oz board the UDFN 3x3 mm land pattern fits inside a 5x5 mm copper keep-out for low-cost manufacturing.
Do not leave MCLR# (RA3) floating in production designs - either tie it to VDD through a 10 kohm pull-up or configure it as a digital input with the internal weak pull-up enabled. The ADC reference voltage defaults to VDD; for high-precision measurements configure the internal 1.024V or 2.048V reference via the FVRCON register and add a 100 nF cap on the external reference pin if available.
Compliance Information
RoHS and REACH compliant per Microchip product page. Industrial temperature grade -40C to +85C; not AEC-Q100 qualified (use PIC12F1822T-I/RF automotive equivalent for vehicle applications). Lead-free and halogen-free assembly per Microchip material declaration.
