PIC12LF1822-E/P - 8-Bit 32MHz XLP MCU 3.5KB Flash DIP-8
MPN: PIC12LF1822-E/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.28 | $12.80 |
| 100 | $1.1 | $110.00 |
| 500 | $0.95 | $475.00 |
| 1,000 | $0.84 | $840.00 |
PIC12LF1822-E/P Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (flash/ROM), data memory (RAM), and integrated peripherals such as timers, ADC, communication interfaces, and I/O pins. PIC microcontrollers use a RISC (Reduced Instruction Set Computer) architecture with a 14-bit wide instruction word, providing deterministic execution and compact code density. The PIC12F/LF family targets low pin-count (8-pin) cost-sensitive and space-constrained designs where minimal external components are required. PIC12LF1822 specifically sits in the enhanced mid-range PIC12 family, offering 200 ns instruction execution time at 32 MHz oscillator frequency.
Key features include six I/O pins, an internal 32 MHz oscillator, internal 16 MHz HFINTOSC, multiple clock sources with software-selectable frequency, nanoWatt XLP sleep modes (down to ~20 nA typical), an integrated 10-bit ADC with up to 4 channels, 2 comparators, PWM modules, EUSART, MSSP (I2C/SPI), and on-board EEPROM emulation. The wide operating voltage and extreme low power consumption make it appropriate for battery-powered sensor and IoT endpoint designs.
Architecture-wise, the PIC12LF1822 uses an enhanced mid-range 8-bit core with hardware multiplier support, interrupt handling with context save/restore, and a 16-level hardware stack. Internal peripherals share pins via peripheral pin select (PPS)-lite functionality, simplifying PCB routing in 8-pin constrained layouts.
Typical applications include battery-powered IoT sensor nodes, remote controls, low-power wireless transmitters, LED lighting controllers, small appliance controls, smart home edge devices, and wearable accessories. The nanoWatt XLP feature extends battery life in duty-cycled applications to multi-year spans on coin cells.
Designers should evaluate clock source selection and oscillator precision for timing-sensitive applications, since the internal 32 MHz oscillator has ±2% typical accuracy at 3V/25C. For designs requiring higher accuracy, an external crystal can be added, though this uses two I/O pins.
Drop-in alternatives for PIC12LF1822-E/P — 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 PIC12LF1822-E/P (same form factor and footprint) — differing in Package, Program Memory (Flash), Timers, Operating Temperature, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC12F1822-E/P
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View Datasheet →PIC12F1572-I/P
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View Datasheet →PIC12F1571-E/P
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View Datasheet →PIC12F1501-E/P
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View Datasheet →PIC12LF1822-E/P Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit enhanced mid-range |
| Program Memory (Flash) | 3.5 KB (2K x 14) |
| RAM | 128 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Frequency | 32 MHz |
| Instruction Execution Time | 200 ns (at 20 MHz), 125 ns (at 32 MHz) |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Operating Temperature Range | -40C to +125C (E grade) |
| I/O Pins | 6 |
| ADC | 10-bit, up to 4 channels |
| Comparators | 2 |
| PWM Modules | Yes (CCP/ECCP) |
| Communication Interfaces | EUSART, MSSP (I2C/SPI) |
| Timers | 4 (8-bit and 16-bit) |
| Internal Oscillator | 32 MHz, 16 MHz HFINTOSC, 31 kHz LFINTOSC |
| Package | 8-pin PDIP (through-hole) |
| Mounting Type | Through-Hole |
| Low-Power Technology | nanoWatt XLP |
| RoHS Status | Compliant |
PIC12LF1822-E/P Pin Configuration
| Pin 1 | VDD — Positive supply voltage (1.8V to 3.6V) |
| Pin 2 | RA5 — Bidirectional I/O / ICSP programming clock |
| Pin 3 | RA4 — Bidirectional I/O with interrupt-on-change |
| Pin 4 | RA3/MCLR — Bidirectional I/O or Master Clear Reset (input only) |
| Pin 5 | RA2 — Bidirectional I/O / analog input |
| Pin 6 | RA1 — Bidirectional I/O / analog input / ICSP data |
| Pin 7 | RA0 — Bidirectional I/O / analog input |
| Pin 8 | VSS — Ground reference |
Typical Applications
PIC12LF1822-E/P is suitable for 6 applications: Battery-Powered IoT Sensor Node, Wireless Remote Control Transmitter, Smart Home Edge Device, LED Lighting Controller, Wearable Fitness Tracker, Small Appliance Control Board.
Battery-Powered IoT Sensor Node
The PIC12LF1822-E/P fits battery-powered IoT sensor nodes because its 1.8V minimum supply lets a CR2032 coin cell run the MCU directly without boost circuitry, while nanoWatt XLP sleep currents extend battery life to multi-year spans. The 32 MHz core handles sensor sampling and protocol framing (e.g., LoRaWAN, BLE beacon transmission) in duty-cycled wake-sleep sequences. Placed between a sensor (e.g., temperature, humidity, accelerometer on ADC channels) and a low-power radio module; the 128 B RAM suffices for short packet buffers and the 3.5 KB flash holds small MAC/PHY stacks or proprietary sensor firmware.
Recommended
Wireless Remote Control Transmitter
The PIC12LF1822-E/P excels in handheld wireless remote controls (RF or IR) due to its low power consumption, integrated timers for key debouncing and carrier generation, and small 8-pin footprint that fits inside battery compartments. The 32 MHz internal oscillator supports precise carrier frequencies for sub-GHz ISM-band protocols like 315 MHz / 433 MHz OOK/FSK or 38 kHz IR carrier. Placed near a low-power transmitter IC (e.g., CC1101 or simple SAW-based TX) with keypad matrix scanning on 4-6 GPIO; sleep current of ~20 nA preserves coin cell charge for years of standby.
Recommended
Smart Home Edge Device
For smart home edge devices like smart locks, door sensors, motion detectors, and environmental monitors, the PIC12LF1822-E/P offers the right balance of low power, processing capability, and integrated peripherals. The internal 10-bit ADC supports direct sensor interfacing (PIR, temperature, light, humidity), while EUSART/MSSP enables communication with external radios or sensor hubs. Placed between a PIR sensor and an RF transmitter; the MCU handles motion detection, debouncing, low-battery alerts, and packet formation before transmitting to a home gateway.
Recommended
LED Lighting Controller
The PIC12LF1822-E/P can drive LED lighting controllers including dimmable lamps, RGB color controllers, and decorative lighting strips. Its integrated PWM modules, 32 MHz core, and 10-bit ADC enable smooth dimming curves and color temperature adjustments. The MCU accepts analog or digital input (potentiometer, button matrix, I2C/SPI command interface) and generates PWM outputs to MOSFET drivers or constant-current LED drivers. Placed on the LED driver PCB between the user input connector and the LED string; nanoWatt XLP modes are useful for standby current limits required by energy regulations.
Recommended
Wearable Fitness Tracker
The PIC12LF1822-E/P is well-suited to wearable fitness trackers, smart bands, and health-monitoring patches because of its tiny footprint, low voltage operation (compatible with single-cell lithium or coin cell), and nanoWatt XLP sleep modes that minimize battery drain during non-active periods. The integrated ADC reads heart rate sensors, motion sensors (via SPI/I2C), and battery voltage. Placed on a small flex PCB near the battery; the MCU coordinates sensor sampling, motion detection (using internal comparators or external accelerometer interrupts), Bluetooth Low Energy transmission coordination, and user button input.
Recommended
Small Appliance Control Board
The PIC12LF1822-E/P provides 8-pin control logic for small appliances like coffee makers, fans, kitchen timers, and personal care devices. Its integrated comparators enable direct sensor conditioning (e.g., NTC thermistor-based temperature sensing), while the EUSART supports display modules or communication with companion ICs. Placed between the user input (buttons, rotary encoder) and the appliance's power electronics (triac, MOSFET driver, relay); the MCU provides timing, mode control, safety interlocks, and user feedback (LEDs, beepers).
Recommended
Recommended Products Summary
Engineering reference data for PIC12LF1822-E/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC12F1822-E/P | PIC12F1840-E/P | PIC12F1572-I/P | PIC12F1571-E/P | PIC12F1501-E/P | PIC12F615-E/P |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | PDIP-8 | PDIP-8 - same | PDIP-8 - same | PDIP-8 - same | PDIP-8 - same | PDIP-8 - same | PDIP-8 - same |
| Program Flash | 3.5 KB | 3.5 KB | 7 KB | 1.75 KB | 1.75 KB | 1.75 KB | 1.75 KB |
| RAM | 128 B | 128 B | 256 B | 128 B | 128 B | 64 B | 64 B |
| Max CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 20 MHz | 20 MHz |
| Supply Voltage | 1.8V to 3.6V | 1.8V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V |
| I/O Pins | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| EUSART | Yes | Yes | Yes | Yes | No | No | No |
| Low-Power Technology | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | Standard |
Key Differentiators
- Low-voltage nanoWatt XLP variant (vs PIC12F1822-E/P)
- Balanced flash and RAM in 8-pin package (vs PIC12F1572-I/P)
- 32 MHz core with EUSART (vs PIC12F1571-E/P)
- Extended -E temperature grade (vs PIC12F1840-E/P)
Design Notes
The PIC12LF1822-E/P requires a supply voltage between 1.8V and 3.6V. For designs powered from 5V rails (USB, industrial 24V stepped down), use the PIC12F1822-E/P variant which is pin-compatible and tolerates up to 5.5V. Always place a 100 nF decoupling capacitor as close to VDD (pin 1) as possible to suppress digital switching noise, plus a 10 uF bulk capacitor if the supply rail has significant inductance or shared loads.
Pin 4 (RA3/MCLR) defaults to Master Clear Reset function and can prevent code execution if held low. To use RA3 as a digital input, configure the MCLRE configuration bit to disable the reset function (programmed via CONFIG register). Additionally, ICSP uses pins RA5 (clock) and RA1 (data); if your application requires both pins as GPIO during normal operation, ensure the programmer is disconnected to prevent contention.
Through-hole PDIP-8 packages benefit from generous pad spacing and copper pours for thermal dissipation, though this 8-pin MCU dissipates negligible power (typically <50 mW even at 32 MHz full load). For mixed-signal designs, separate analog (RA0-RA2) and digital (RA4-RA5) ground returns with a star ground topology to minimize ADC noise coupling. Keep clock trace lengths short if using an external crystal on RA4/RA5.
The internal 32 MHz oscillator has ±2% accuracy at 3V/25C typical; for protocols requiring tight timing accuracy (UART at high baud rates, I2C at 400 kHz+), calibrate the OSCTUNE register against a reference clock, or switch to an external crystal on RA4/RA5 (sacrificing 2 I/O). The 10-bit ADC requires acquisition time of at least 1.45 µs at 32 MHz Fosc for full-resolution conversions.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - automotive designs should select PIC12LF1822-E/P variants marked with automotive temperature grade or contact Microchip for AEC-Q100 options. Lead-free and halogen-free per Microchip material declarations.
