PIC16LF1823-I/ST - 8-bit XLP MCU 3.5KB Flash 32MHz | Microchip
MPN: PIC16LF1823-I/ST ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.79 | $1.79 |
| 10 | $1.62 | $16.20 |
| 100 | $1.39 | $139.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $1.02 | $1,020.00 |
PIC16LF1823-I/ST Overview
An 8-bit PIC microcontroller is a compact, low-power CMOS processor built on Microchip's enhanced mid-range RISC architecture. The PIC16LF1823 sits in the broader microcontroller taxonomy as: PIC16LF1823 -> PIC16F/LF182x family -> PIC16 8-bit MCU family -> PIC microcontroller -> microcontroller (MCU) -> embedded processor. Within a system hierarchy it functions as the decision-making subsystem that reads sensors, drives actuators, and runs user firmware while consuming minimal quiescent current.
Key specifications include 32MHz maximum clock speed with a 200ns instruction cycle, 3.5KB self-programmable Flash program memory, 256 bytes EEPROM, 12 I/O pins, an integrated 32MHz internal oscillator, and NanoWatt XLP power-saving modes. The 14-pin TSSOP package reduces board area while maintaining a standard 0.65mm pitch footprint, and peripherals include Capture/Compare/PWM (CCP), 10-bit ADC with computation, comparators, and mTouch capacitive sensing support.
The architecture combines a 14-bit instruction word with a 16-level hardware stack and 25-instruction opcode set, balancing code density with deterministic real-time response. Active current is typically in the microampere range at low clock speeds, and sleep currents can drop below 30nA, making the device suited to duty-cycled battery applications. The on-chip 32MHz HFINTOSC eliminates the need for an external crystal in space-constrained designs.
Typical applications include battery-powered sensor nodes, wearable fitness/health monitors, low-power IoT endpoints, remote controls, consumer appliances, and small motor-control subsystems. The combination of internal oscillator, EEPROM data storage, and CCP/PWM peripherals enables single-chip implementation of many simple embedded products.
When designing with this device, prioritize unused peripheral shutdown, careful ADC acquisition timing, and proper decoupling. Keep VDD traces short, place a 0.1uF bypass capacitor within 5mm of the VDD pin, and use the IDD/datasheet graphs to estimate average current across duty cycles before committing to battery capacity.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16LF1823-I/ST — 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 PIC16LF1823-I/ST (same form factor and footprint) — differing in Package, ADC, Operating Temperature, Core Architecture, Communication.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1823-I/ST
✅ Drop-In✓ In Stock
$0.85 / Unit
View Datasheet →PIC16LF1823-I/ST Maximum Ratings & Electrical Characteristics
| Core | PIC16 enhanced mid-range 8-bit RISC |
| Family | PIC® XLP 16F |
| Maximum Clock Speed | 32 MHz |
| Instruction Cycle | 200 ns |
| Program Memory (Flash) | 3.5 KB (2K x 14) |
| Data RAM | 128 bytes |
| Data EEPROM | 256 bytes |
| I/O Pins | 12 |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial) |
| Internal Oscillator | 32 MHz HFINTOSC |
| Communication | I2C, SPI, EUSART |
| Package | 14-TSSOP |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant (lead-free) |
PIC16LF1823-I/ST Pin Configuration
| Pin 1 | RA3/AN3/C1IN+/VREF+ — Bidirectional I/O; analog input; comparator input; ADC voltage reference positive |
| Pin 2 | RA0/AN0/C1IN0/ICSPDAT — Bidirectional I/O; analog input; comparator input; ICSP data |
| Pin 3 | RA1/AN1/C1IN1-/ICSPCLK — Bidirectional I/O; analog input; comparator input; ICSP clock |
| Pin 4 | RA2/AN2 — Bidirectional I/O; analog input |
| Pin 5 | RA5/MCLR/VPP — Bidirectional I/O; Master Clear (reset) input; programming voltage |
| Pin 6 | RA4/AN4/T0CKI/C1OUT — Bidirectional I/O; analog input; Timer0 clock input; comparator output |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RC0/AN8/SCL/SCK — Bidirectional I/O; analog input; I2C clock; SPI clock |
| Pin 9 | RC1/AN9/SDA/SDI — Bidirectional I/O; analog input; I2C data; SPI data in |
| Pin 10 | RC2/AN10/SDO — Bidirectional I/O; analog input; SPI data out |
| Pin 11 | RC3/AN11/CCP1 — Bidirectional I/O; analog input; CCP1 PWM output |
| Pin 12 | RC4/TX/CK — Bidirectional I/O; EUSART async transmit or sync clock |
| Pin 13 | RC5/RX/DT — Bidirectional I/O; EUSART async receive or sync data |
| Pin 14 | VDD — Positive supply voltage (1.8V to 3.6V) |
Typical Applications
PIC16LF1823-I/ST is suitable for 6 applications: Battery-Powered Sensor Nodes, Wearable Fitness & Health Monitors, IoT Endpoints & Smart Sensors, Consumer Remote Controls, Small Motor Control (DC / Stepper), Industrial Automation Modules.
Battery-Powered Sensor Nodes
The PIC16LF1823-I/ST fits battery-powered sensor nodes because its NanoWatt XLP technology delivers sleep currents under 30nA and active currents in the microampere range, enabling multi-year battery life on a single coin cell. The integrated 32MHz HFINTOSC eliminates external crystal cost and board area, while the 14-pin TSSOP package keeps the BOM compact for miniature sensor form factors. The 10-bit ADC with computation and 12 I/O pins accommodate analog sensor interfaces, I2C/SPI sensor expansion, and GPIO for control. Unlike higher-end Cortex-M0 parts that require active mode management, the PIC16LF1823's sleep/wake architecture with WDT and timer interrupts simplifies duty-cycled firmware design.
Recommended
Wearable Fitness & Health Monitors
Wearable fitness and health monitors benefit from the PIC16LF1823-I/ST's ultra-low-power XLP modes and small TSSOP-14 footprint, enabling comfortable wrist-worn or patch-form-factor designs. The integrated mTouch capacitive sensing hardware supports touch buttons without external components, while the 12 I/O pins can drive LED indicators, a heart-rate sensor interface, and SPI/I2C peripherals. With 3.5KB Flash, the device accommodates simple fitness algorithms, BLE command handling, and sensor fusion while maintaining battery life measured in weeks. The 1.8V to 3.6V operation aligns directly with single-cell Li-ion or coin-cell chemistries.
Recommended
IoT Endpoints & Smart Sensors
The PIC16LF1823-I/ST serves low-power IoT endpoints because its 32MHz core, I2C/SPI/EUSART peripherals, and 256-byte EEPROM provide a complete connectivity and data-logging solution in a 14-pin TSSOP package. With sleep current under 30nA, duty-cycled sensor reading plus radio transmissions can run for years on a single battery. The 32MHz HFINTOSC provides accurate timing for sensor sampling without external components, and the 10-bit ADC handles analog sensor inputs directly. Designers appreciate the small code footprint and predictable interrupt response for deterministic IoT protocol timing.
Recommended
Consumer Remote Controls
The PIC16LF1823-I/ST is well suited for consumer remote controls thanks to its low cost, low power consumption, and integrated CCP/PWM peripherals for IR carrier generation. The 32MHz clock supports accurate IR timing protocols (RC5, NEC, Sony), while the 3.5KB Flash holds complete protocol stacks with custom button mappings. Battery life benefits from sub-microampere sleep current between button presses, and the 14-pin TSSOP package fits inside thin remote housings. The 12 I/O pins support key-scan matrices for 20+ buttons via diode multiplexing.
Recommended
Small Motor Control (DC / Stepper)
Small DC motor and stepper motor control applications leverage the PIC16LF1823-I/ST's integrated CCP/PWM peripherals and 32MHz clock for precise PWM generation up to 32kHz at 10-bit resolution. The 14-pin TSSOP package fits compact motor-driver PCBs, while the 12 I/O pins can drive direction, enable, fault, and tachometer signals alongside the PWM outputs. The 3.5KB Flash accommodates simple closed-loop PID control, and NanoWatt sleep modes minimize standby current when the motor is idle. The 1.8V-3.6V operation matches battery-powered fan and pump designs.
Recommended
Industrial Automation Modules
Industrial automation modules use the PIC16LF1823-I/ST for signal conditioning, sensor interfacing, and protocol bridging thanks to its industrial -40C to +85C temperature range and robust peripherals. The EUSART supports RS-232/RS-485 communication at industrial baud rates, while the I2C/SPI peripherals interface to industrial sensors and EEPROM data loggers. The 256-byte EEPROM stores calibration constants and configuration across power cycles, and the 14-pin TSSOP package fits dense PLC backplane designs. Designers value the deterministic instruction execution and long-term Microchip silicon availability for industrial lifecycle requirements.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1823-I/ST — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1823-I/SL | PIC16LF1823-I/P | PIC16F1823-I/ST | PIC16LF1823-E/SL | PIC16LF1823-E/P | PIC16LF1823-E/ML |
|---|---|---|---|---|---|---|---|
| Package | 14-TSSOP (ST) | 14-SOIC (SL) - different footprint | 14-PDIP (P) - through-hole | 14-TSSOP (ST) - same footprint | 14-SOIC (SL) - different footprint | 14-PDIP (P) - through-hole | 16-QFN (ML) - different footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB |
| Data RAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Data EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Maximum Clock Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Supply 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 | 1.8 V to 3.6 V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C | -40C to +125C | -40C to +125C |
| Unit Price @ Qty 1 (USD) | $1.79 | $1.83 | $1.94 | $1.79 | $2.05 | $2.16 | $2.21 |
Key Differentiators
- Ultra-low-power XLP architecture with sub-30nA sleep current (vs PIC16F1823-I/ST)
- Tightest TSSOP-14 footprint for compact designs (vs PIC16LF1823-I/SL)
- Extended temperature variant available in same TSSOP-14 family (vs PIC16LF1823-E/SL)
Design Notes
The PIC16LF1823-I/ST NanoWatt XLP modes support sub-30nA sleep currents with WDT or RTC wake. For battery-life estimation, use the datasheet IDD vs. frequency curves: at 32MHz the active current is ~5.5mA at 3.3V, while at 31kHz LFINTOSC it drops to ~20uA. Apply aggressive duty cycling - sample sensor at 1Hz, transmit for 10ms, then sleep. Estimated: a CR2032 battery (220mAh) with 0.1% duty cycle yields ~8 years of theoretical battery life assuming 5uA average current.
Place a 0.1uF decoupling capacitor within 5mm of the VDD pin (pin 14) and a 1uF bulk capacitor nearby for switching transients. For TSSOP packages, route VDD/VSS on wide traces to minimize inductance. Keep analog inputs (AN0-AN11) short and away from PWM/CCP outputs to reduce crosstalk. Use a ground pour on the top layer under the MCU for thermal dissipation and EMI reduction. Place the ICSP connector (RA0/RA1) on accessible board edge for programming access.
Do not omit the MCLR pull-up resistor (typically 10kOhm) on pin 5 - leaving it floating causes erratic resets. When using the internal 32MHz HFINTOSC, the OSCCON calibration register must be loaded from the factory-calibrated constant; failing to do so results in a default 4MHz start. The ADC requires a minimum acquisition time based on source impedance; for 10kOhm source, use at least 8us TACQ. Do not exceed VDD+0.3V on any pin to avoid latch-up. The PIC16LF1823-I/ST is 3.6V max - applying 5V will damage the device; use PIC16F1823-I/ST for 5V tolerance.
Compliance Information
Lead-free TSSOP-14 package per Microchip packaging specifications. RoHS and REACH compliant per distributor listings. AEC-Q100 not applicable - this part is not automotive-qualified (no -VAO or -Q1 suffix).
