PIC16LF1823T-I/ST - 8-bit XLP MCU, 3.5KB Flash, 32MHz | Microchip
MPN: PIC16LF1823T-I/ST ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.47 | $1.47 |
| 10 | $1.32 | $13.20 |
| 100 | $1.1 | $110.00 |
| 500 | $0.92 | $460.00 |
| 1,000 | $0.78 | $780.00 |
PIC16LF1823T-I/ST Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), non-volatile EEPROM, and peripheral IP such as timers, ADC, comparators, and communication interfaces on one die. PIC® microcontrollers from Microchip use a RISC-style Harvard architecture with 14-bit wide instruction words optimized for compact code density and deterministic interrupt latency. The PIC16LF1823 belongs to the mid-range enhanced core family, positioned below the PIC18 and dsPIC families and aimed at cost-sensitive, low-power embedded control.
Key features include the eXtreme Low Power (XLP) technology with typical sleep current in the nanoamp range, 12 channels of 10-bit ADC, two PWM modules with complementary output capability, a hardware 8-bit/16-bit timer, an EUSART, an MSSP module for SPI/I2C, and up to 12 I/O pins. The internal 32 MHz oscillator is factory calibrated and supports system clock postscaling for power optimization. Brown-out Reset (BOR) and Power-on Reset (POR) protect against low-voltage code corruption.
The device operates from 1.8 V to 3.6 V, ideal for two AA-cell or single Li-primary chemistries, and the LF suffix confirms low-voltage operation. The 14-TSSOP package with 0.173 inch body width offers a small PCB footprint (~5.0 mm x 4.4 mm) suitable for dense designs. The 'T' suffix denotes Tape & Reel packaging for high-volume SMT assembly; the 'I' in -I/ST denotes industrial temperature grade (-40 °C to +85 °C).
Typical applications include consumer remote controls, wireless sensor nodes, wearable fitness bands, IoT end-node devices, battery-powered metering, LED driving, and small appliance control. The XLP nanoWatt sleep modes extend battery life in intermittently-operated systems such as door/window sensors and thermostats.
When designing, place a 0.1 µF decoupling capacitor as close as possible to VDD, ensure MCLR is either tied to VDD through a 10 kΩ resistor or driven by the ICSP programmer, and verify that the ICSP™/ICD pins (PGD/PGC) are accessible for in-circuit programming. The internal oscillator is factory calibrated to within ±1% over voltage and temperature, eliminating the need for an external crystal in most cost-sensitive designs.
This page synthesizes distributor pricing from DigiKey, Mouser, LCSC, Heisener and others, drop-in same-package alternatives from the PIC16 family, and practical design notes not consolidated in a single manufacturer datasheet PDF.
Drop-in alternatives for PIC16LF1823T-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 PIC16LF1823T-I/ST (same form factor and footprint) — differing in Package, Program Memory (Flash), ADC, Operating Temperature, Communication.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1823-I/ST
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →PIC16LF1823T-I/JQ
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16F1823T-I/ST
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →PIC16F1823-I/ST
✅ Drop-In✓ In Stock
$0.85 / Unit
View Datasheet →PIC16LF1823-E/ST
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16LF1554T-I/ST
✅ Drop-In✓ In Stock
$0.95 / Unit
View Datasheet →PIC16LF1823T-I/ST Maximum Ratings & Electrical Characteristics
| Architecture | PIC16 (Enhanced Mid-Range) 8-bit RISC |
| Program Memory (Flash) | 3.5 KB (2K x 14 words) |
| Data RAM | 128 bytes |
| EEPROM | 256 bytes |
| CPU Speed | 32 MHz (8 MIPS) |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 12 |
| ADC | 10-bit, up to 12 channels |
| Internal Oscillator | 32 MHz (factory calibrated) |
| Timers | Timer0, Timer1, Timer2 |
| PWM Modules | 2 (with complementary outputs) |
| Communication | EUSART, MSSP (SPI/I2C) |
| Package | 14-TSSOP (0.173 inch / 4.40 mm body) |
| Operating Temperature | -40 °C to +85 °C (Industrial grade) |
| Mounting Type | Surface Mount (Tape & Reel, 'T' suffix) |
| RoHS Status | Compliant |
| Programming Interface | ICSP™ (In-Circuit Serial Programming) / ICD |
PIC16LF1823T-I/ST Pin Configuration
| Pin 1 | RA0/ICSPDAT — Bidirectional I/O / ICSP data |
| Pin 2 | RA1/ICSPCLK — Bidirectional I/O / ICSP clock |
| Pin 3 | RA2 — Bidirectional I/O |
| Pin 4 | MCLR/RA3 — Reset input or bidirectional I/O |
| Pin 5 | RC0 — Bidirectional I/O |
| Pin 6 | RC1 — Bidirectional I/O |
| Pin 7 | VSS — Ground reference |
| Pin 8 | RC2 — Bidirectional I/O |
| Pin 9 | RC3 — Bidirectional I/O |
| Pin 10 | RC4 — Bidirectional I/O |
| Pin 11 | RC5 — Bidirectional I/O |
| Pin 12 | RC6 — Bidirectional I/O |
| Pin 13 | RC7 — Bidirectional I/O |
| Pin 14 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
Typical Applications
PIC16LF1823T-I/ST is suitable for 8 applications: Battery-Powered IoT Sensor Node, Consumer Remote Control / IR Transmitter, Wearable Fitness Band / Health Monitor, Small Appliance Control (Coffee Maker / Fan / Heater), LED Lighting Controller / Architectural Dimmer, Smart Home Thermostat / HVAC Endpoint, Automotive Accessory Controller (Body Electronics), Industrial Sensor Transmitter (4-20 mA Loop).
Battery-Powered IoT Sensor Node
The PIC16LF1823T-I/ST is well suited for battery-powered IoT sensor nodes thanks to its XLP nanoWatt sleep current in the sub-100 nA range, 1.8 V minimum VDD for direct 2xAA or single Li-primary operation, and integrated 10-bit ADC for analog sensor readout. The 3.5 KB Flash and 128 bytes RAM can host lightweight Modbus-style sensor-reporting firmware while the MSSP (SPI/I2C) interfaces digital sensors like temperature, humidity, or accelerometer ICs. At a 1% duty cycle (one wake event per minute), a 2xAA pack can power the node for over 5 years, outperforming many 32-bit MCUs that spend too much time awake on startup.
Recommended
Consumer Remote Control / IR Transmitter
The PIC16LF1823T-I/ST fits consumer IR remote controls due to its 32 MHz CPU (8 MIPS), low power consumption, and ability to drive an IR LED via PWM at 38 kHz carrier with precise timing control. The 12 I/O pins allow direct matrix keypad scanning up to 4x4 keys, while the 3.5 KB Flash accommodates RC5, NEC, or SIRC protocol encoders with room for custom OEM codes. Operating from 2xAA cells at 3.0 V nominal, the LF variant maximizes battery life in line-of-sight consumer remotes that sit idle 99% of the time.
Recommended
Wearable Fitness Band / Health Monitor
Wearable fitness bands benefit from the PIC16LF1823T-I/ST's XLP nanoWatt sleep modes (typically under 30 nA with RTC running), small 14-TSSOP package footprint (5.0 x 4.4 mm), and 10-bit ADC for heart-rate or step-count sensor signal conditioning. The device can wake on a periodic timer interrupt from the Watchdog Timer or an external sensor interrupt, sample an optical heart-rate sensor, log the value, and return to sleep within microseconds. The 1.8 V minimum VDD enables direct operation from a single CR2032 coin cell with the MCP1703 LDO regulator.
Recommended
Small Appliance Control (Coffee Maker / Fan / Heater)
Small home appliances such as coffee makers, fans, and space heaters use the PIC16LF1823T-I/ST for motor or heater PWM control, capacitive or resistive touch-button sensing via the on-chip comparators, and UART-driven status display updates. Two complementary PWM modules with dead-band control can drive a half-bridge directly with hardware shoot-through protection. The 32 MHz CPU enables closed-loop PID control at 1 kHz update rates, while the 1.8 V to 3.6 V range simplifies integration with 3.3 V sensors and displays. The 14-TSSOP package dissipates heat effectively across copper pours for moderate PWM loads.
Recommended
LED Lighting Controller / Architectural Dimmer
Architectural LED dimmers and color-mixing controllers can use the PIC16LF1823T-I/ST to generate multiple PWM channels for RGBW LED dimming, with smooth 16-bit fade resolution via the CCP/PWM modules. The 10-bit ADC reads wall-dimmer phase-cut signals for 0-10 V or trailing-edge dimming compatibility, while the EUSART interfaces to DMX-512 or DALI transceivers for professional lighting control. The PIC's 32 MHz CPU supports high-frequency PWM (>20 kHz) above the audible range, eliminating coil whine in dimmer applications.
Recommended
Smart Home Thermostat / HVAC Endpoint
The PIC16LF1823T-I/ST serves as the local-control MCU in smart-home thermostats, interfacing with NTC thermistor temperature sensors via the on-chip 10-bit ADC and driving triac-fired HVAC equipment through optoisolators. The PIC's low-power XLP modes allow battery-backed operation with peak-current interruptions up to 1 A, while its EUSART or MSSP interfaces Wi-Fi or Sub-GHz wireless modules for cloud connectivity. Operating from 2xAA cells at 3.0 V, the device draws microamps during idle intervals, dramatically extending service intervals in retrofit thermostat installations.
Recommended
Automotive Accessory Controller (Body Electronics)
The PIC16LF1823-E/ST variant (extended -40 °C to +125 °C range) of the same die as PIC16LF1823T-I/ST supports automotive accessory controllers such as ambient lighting drivers, seat-position memory modules, and mirror-fold actuators. The 32 MHz CPU executes CAN-bias LIN protocol stacks or PWM commands within tight automotive latency budgets, while the 14-TSSOP package handles the thermal stress of cabin-mounted environments. AEC-Q100 qualification is not on the standard PIC16LF1823T-I/ST (industrial grade), so automotive designs should migrate to the PIC16LF1823-E/ST or -EQFJ variants for production builds.
Recommended
Industrial Sensor Transmitter (4-20 mA Loop)
Industrial 4-20 mA current-loop sensor transmitters can use the PIC16LF1823T-I/ST for sensor signal conditioning via the on-chip 10-bit ADC and PWM-driven loop current regulation. The MCU operates from a loop-powered supply through a low-dropout linear regulator such as the MCP1703, providing the 3.3 V rail needed for the LF silicon. The MSSP supports I2C digital sensor interfaces while the EUSART drives a HART modem for bi-directional communication over the same current loop. The industrial -40 °C to +85 °C temperature range handles factory-floor environments without derating.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1823T-I/ST — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1823-I/ST | PIC16F1823T-I/ST | PIC16LF1823-E/ST | PIC16LF1554T-I/ST |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-TSSOP | 14-TSSOP - same | 14-TSSOP - same | 14-TSSOP - same | 14-TSSOP - same |
| CPU Core | PIC16 enhanced mid-range 8-bit | PIC16 enhanced mid-range 8-bit | PIC16 enhanced mid-range 8-bit | PIC16 enhanced mid-range 8-bit | PIC16 enhanced mid-range 8-bit |
| Flash Memory | 3.5 KB (2K x 14) | 3.5 KB | 3.5 KB | 3.5 KB | 7 KB |
| RAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 256 bytes |
| Operating Voltage (VDD) | 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 |
| CPU Speed | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +125 °C | -40 °C to +85 °C |
| I/O Pins | 12 | 12 | 12 | 12 | 12 |
| Packaging Format | Tape & Reel | Tube | Tape & Reel | Tube | Tape & Reel |
Key Differentiators
- Lowest-cost Microchip alternative with same die (vs PIC16LF1823-I/ST)
- Wide-voltage drop-in for 5 V designs (vs PIC16F1823T-I/ST)
- Extended temperature option for automotive use (vs PIC16LF1823-E/ST)
- Doubled Flash for future firmware growth (vs PIC16LF1554T-I/ST)
Design Notes
Place a 0.1 µF decoupling capacitor as close as possible to the VDD pin (pin 14) with the ground return to the VSS pin (pin 7) using a wide short trace. For noise-sensitive analog applications such as ADC measurements, add a bulk 10 µF tantalum or ceramic capacitor on VDD. The PIC16LF1823T-I/ST's LF variant requires VDD between 1.8 V and 3.6 V - if the upstream rail is 5 V, use the PIC16F1823T-I/ST variant instead or a 3.3 V LDO like MCP1700-3302E.
Keep the ICSP™/ICD pins (RA0/ICSPDAT and RA1/ICSPCLK) accessible on the PCB for in-circuit programming and debugging. MCLR (pin 4) must be tied to VDD through a 10 kΩ pull-up resistor for normal operation; do not leave MCLR floating. For low-voltage operation at 1.8 V, ensure the MCLR rise time is below the BOR threshold window to avoid unintended resets. Place test points on PGD, PGC, VDD, and VSS to simplify production programming.
Estimated: with the internal 32 MHz oscillator driving the system clock at 32 MHz, the PIC16LF1823T-I/ST produces up to 64 MHz harmonic content. Use a 4-layer PCB stackup with continuous ground plane beneath the device to minimize radiated emissions. For ADC measurements, place analog and digital grounds on the same star point and use the 10-bit ADC with at least 1 µs acquisition time for full conversion accuracy. Enable the ADC's A/D conversion clock divider if system clock exceeds 8 MHz for ADC operation.
Common pitfalls: (1) confusing the PIC16LF1823 (1.8-3.6 V) with the PIC16F1823 (1.8-5.5 V) - mixing them up at 5 V VDD destroys the LF die. (2) Forgetting to configure the BOR fuse for low-voltage applications, leading to POR corruption at startup. (3) Using the HFINTOSC at 32 MHz without enabling the PLL in older code revisions. (4) Not configuring the analog/digital mode for ANSEL register bits on ADC channels, resulting in always-zero ADC readings. (5) Exceeding the absolute maximum current rating of any I/O pin (typically 25 mA source/sink) when driving LEDs directly without a current-limiting resistor.
The 14-TSSOP package has a thermal resistance theta_JA of approximately 100 °C/W in still air, 60 °C/W with a small copper pour on the JEDEC EIA/JESD51 test board. At 32 MHz operation the PIC16LF1823T-I/ST draws typically 6 mA at 3.3 V (20 mW), causing negligible self-heating. The thermal limit is rarely a concern except in fanless enclosed industrial designs at high ambient; in those cases verify the operating temperature range via Microchip's thermal management application note AN1338.
Compliance Information
Standard PIC16LF1823T-I/ST is industrial grade -40C to +85C and NOT AEC-Q100 qualified. For AEC-Q100 automotive designs, choose the PIC16F1823-E/ST or PIC16LF1823-EQFN automotive qualified variants. RoHS/REACH declarations available from Microchip product compliance portal.
