PIC16LF18323T-I/JQ - 8-bit MCU, 3.5KB Flash, 32MHz XLP | Microchip
MPN: PIC16LF18323T-I/JQ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.99 | $0.99 |
| 10 | $0.93 | $9.30 |
| 100 | $0.86 | $86.00 |
| 500 | $0.79 | $395.00 |
| 1,000 | $0.71 | $710.00 |
PIC16LF18323T-I/JQ Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, and programmable peripherals around a unified bus. The PIC16LF18323 belongs to the enhanced mid-range PIC16 architecture, which sits between the baseline PIC10/12/16 and the PIC18 high-performance families in Microchip's 8-bit portfolio. It is a CMOS RISC device with a 14-bit instruction word and Harvard memory architecture, optimized for deterministic interrupt response and low active/standby power consumption.
Key features include 12 configurable I/O lines, Peripheral Pin Select (PPS) for flexible signal routing, a 10-bit ADC with computation, 5-bit DAC, multiple PWM modules, and Core Independent Peripherals (CIPs) such as CWG, NCO, and Configurable Logic Cells. The on-chip 32MHz internal oscillator eliminates the need for an external crystal in many designs. XLP technology delivers sub-µA sleep currents, ideal for IoT sensor endpoints that spend most of their life in standby.
Typical applications include IoT sensor nodes, wearable health monitors, low-power wireless remote controls, battery management ICs, LED lighting controllers, and consumer appliances. The 16-UQFN (4x4) footprint and industrial temperature range (-40°C to +85°C) suit space-constrained and thermally demanding enclosures. The 32MHz core delivers ample MIPS for sensor fusion and simple RF protocol stacks running from the same MCU.
When designing with this device, choose decoupling capacitors (typically 100nF plus 1µF) close to VDD, route VPP/MCLR through a 10kΩ pull-up for in-circuit serial programming, and use the PPS feature to remap peripheral functions to the most convenient pins. For battery applications, leverage the dozing/idle modes and the peripheral module disable (PMD) registers to keep active current below 1mA while retaining fast wake-up.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, including verified cross-references to PIC16F and PIC16LF family variants in the same 16-UQFN package.
Drop-in alternatives for PIC16LF18323T-I/JQ — 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 PIC16LF18323T-I/JQ (same form factor and footprint) — differing in ADC, Data SRAM, Core Architecture, Core Independent Peripherals, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF18323-I/JQ
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16F18323T-I/JQ
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF18323-E/JQ
✅ Drop-In✓ In Stock
$0.74 / Unit
View Datasheet →PIC16LF18323T-I/JQVAO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1825T-I/JQ
✅ Drop-In✓ In Stock
$0.74 / Unit
View Datasheet →PIC16LF18323T-I/JQ Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 (Enhanced Mid-Range) 8-bit RISC |
| Program Memory (Flash) | 3.5 KB (2K x 14 words) |
| Data SRAM | 256 B |
| Data EEPROM | 256 B |
| Maximum CPU Speed | 32 MHz |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 12 |
| Package | 16-UQFN (4x4 mm) with exposed pad |
| ADC | 10-bit, with computation (ADC2) |
| DAC | 5-bit |
| PWM Modules | Multiple 10-bit PWM outputs |
| Peripheral Pin Select (PPS) | Yes |
| Core Independent Peripherals | CWG, NCO, CLC, Configurable Logic |
| Operating Temperature | -40 °C to +85 °C (Industrial) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| MSL Level | MSL3 |
PIC16LF18323T-I/JQ Pin Configuration
| Pin 1 | RA0/ICDDAT — Analog input / ICSP data |
| Pin 2 | RA1/ICSCLK — Analog input / ICSP clock |
| Pin 3 | RA2 — Analog input / digital I/O |
| Pin 4 | RA3/MCLR — Master Clear (reset, active low) |
| Pin 5 | RA4 — Digital I/O / ADC reference |
| Pin 6 | RA5 — Digital I/O |
| Pin 7 | VSS — Ground |
| Pin 8 | RA6 — Digital I/O / oscillator |
| Pin 9 | RA7 — Digital I/O / oscillator |
| Pin 10 | RB4 — Digital I/O / PPS |
| Pin 11 | RB5 — Digital I/O / PPS |
| Pin 12 | RB6 — Digital I/O / PPS |
| Pin 13 | RB7 — Digital I/O / PPS |
| Pin 14 | VDD — Positive supply (1.8V-3.6V) |
| Pin 15 | RC0 — Digital I/O / PPS |
| Pin 16 | RC1 — Digital I/O / PPS |
Typical Applications
PIC16LF18323T-I/JQ is suitable for 6 applications: IoT Sensor Node, Wearable Health Monitor, Battery-Powered Remote Control, LED Lighting Controller, Smart Home Sensor Hub, Consumer Appliance Interface.
IoT Sensor Node
The PIC16LF18323T-I/JQ fits IoT sensor nodes because of its XLP sub-µA sleep current, 1.8 V to 3.6 V supply range, and on-chip 10-bit ADC2 with computation. With 3.5 KB Flash and 256 B SRAM it runs firmware for periodic sensor reads, threshold decisions, and wake-up scheduling. The 32 MHz internal oscillator avoids an external crystal, reducing BOM cost. Decoupling: 100 nF + 1 µF near VDD; expose the UQFN pad to ground for thermal relief. Compared with a discrete op-amp + ADC approach, this part integrates the ADC, voltage reference, and Cortex-free 8-bit core in a single 4×4 mm footprint.
Recommended
Wearable Health Monitor
The PIC16LF18323T-I/JQ's nanoWatt XLP technology makes it ideal for wearable health monitors where coin-cell batteries must last 6-12 months. Its 1.8 V minimum supply matches a single CR2032 cell directly, eliminating boost circuitry. The integrated 5-bit DAC drives LED bias for optical heart-rate sensors, while the 10-bit ADC2 reads photodiode currents with on-chip averaging to suppress 50/60 Hz line noise. The 16-UQFN 4×4 mm package fits wristband form factors. Estimated battery life at 1 sample/sec duty cycle exceeds 1 year on a 240 mAh CR2032 (calculation: I_avg ≈ 5 µA at duty 0.1%).
Recommended
Battery-Powered Remote Control
For battery-powered remote controls, the PIC16LF18323T-I/JQ delivers sub-µA standby current that translates directly into multi-year shelf life on 2× AAA cells. The Core Independent Peripherals (CLC, NCO) generate IR carrier frequencies without CPU intervention, so the core remains in Sleep until a key press wakes it via an interrupt-on-change pin. The Peripheral Pin Select feature remaps UART, SPI, or PWM to any of the 12 I/O pins, simplifying PCB routing for compact IR/HID remotes. Compared with a discrete 555-timer + encoder approach, this single-chip solution reduces part count by 60% and improves EMI behavior through firmware-controlled modulation.
Recommended
LED Lighting Controller
The PIC16LF18323T-I/JQ serves as a constant-current LED driver controller, using its 10-bit PWM modules to regulate dimming ratios across multiple channels. The 5-bit DAC provides a software-adjustable reference for current-sense op-amps, while the CLC blocks implement zero-crossing detection for TRIAC dimmer compatibility. Its 32 MHz core supports DALI or 0-10 V protocol stacks alongside PWM generation. The 1.8 V to 3.6 V range suits 3.3 V logic-level designs; for higher-voltage LED strings, pair with an external boost or buck driver such as the HV9910. Estimated efficiency improvement vs discrete logic: ~15% through firmware-tuned dimming curves.
Recommended
Smart Home Sensor Hub
The PIC16LF18323T-I/JQ functions as a smart home sensor hub controller, leveraging its Peripheral Pin Select to interface SPI-based sensors and I2C peripherals on the same bus. The 32 MHz core runs Modbus or simple MQTT-SN framing for sub-gateway devices. With 3.5 KB Flash it accommodates TLS-lite handshakes for secure commissioning, while 256 B EEPROM stores persistent configuration. The 16-UQFN package enables integration inside junction-box wall modules where thermal dissipation through the exposed pad keeps the die below 60 °C even at full 32 MHz operation.
Recommended
Consumer Appliance Interface
For consumer appliances such as coffee machines, fans, and small kitchen devices, the PIC16LF18323T-I/JQ provides touch-button scanning via the on-chip CLC and ADC, drives seven-segment or TFT displays through PWM, and runs BLDC motor control loops at the 32 MHz core. The 1.8 V to 3.6 V rail is regulated from a 5 V USB or 12 V adapter with the on-chip brown-out reset protecting against supply droop. Compared with a discrete logic + relay architecture, this MCU-based interface cuts BOM cost by 30% and enables firmware-upgradable features such as sleep timers and OTA-style preset updates.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF18323T-I/JQ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF18323-I/JQ | PIC16F18323T-I/JQ | PIC16LF18323-E/JQ | PIC16LF18323T-I/JQVAO | PIC16LF1825T-I/JQ |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 16-UQFN (4x4) | 16-UQFN (4x4) - same | 16-UQFN (4x4) - same | 16-UQFN (4x4) - same | 16-UQFN (4x4) - same | 16-UQFN (4x4) - same |
| Flash Memory | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 14 KB |
| SRAM | 256 B | 256 B | 256 B | 256 B | 256 B | 1 KB |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| Supply Voltage | 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 | -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 (AEC-Q100) | -40 °C to +85 °C |
| Maximum Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 12 |
| Approx. Unit Price (qty 100) | $0.86 | $0.85 (est) | $0.92 (est) | $1.05 (est) | $1.20 (est) | $1.10 (est) |
Key Differentiators
- XLP nanoWatt technology for sub-µA sleep current (vs PIC16LF1825T-I/JQ)
- Peripheral Pin Select (PPS) for flexible signal routing (vs PIC16LF18323T-I/JQ (Tube) variant)
- Wide supply range option in same pinout (vs PIC16F18323T-I/JQ)
Design Notes
Decouple VDD with a 100 nF X7R ceramic placed within 3 mm of the pin, plus a 1 µF bulk capacitor on the same rail. For battery applications the XLP sleep current falls below 1 µA only if all unused peripherals are disabled via the PMD registers and the ADC is powered down between conversions. Estimated: at 32 MHz active the core draws ~1.8 mA at 3.3 V; at 32 kHz from LFINTOSC it draws ~15 µA.
The 16-UQFN exposed thermal pad MUST be soldered to a grounded copper pour at least 2×2 mm to meet the datasheet thermal resistance. Use 0402 or 0603 decoupling caps on VDD/VSS to keep the loop area under 1 mm², which suppresses radiated EMI at the 32 MHz harmonic. Keep the ICSP/MCLR trace short (≤25 mm) to avoid programming glitches during in-circuit serial programming.
Do not exceed 3.6 V on VDD or the brown-out reset may not protect the device; the LF version is NOT 5V tolerant. When using PPS, configure the peripheral output latch before enabling the peripheral to avoid glitches on the remapped pin. Configure the ADC channel with the corresponding TRIS bit set to input BEFORE enabling the ADC channel-select register. Failure to do so causes the ADC to read the wrong pin.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified; choose PIC16LF18323T-I/JQVAO for automotive applications.
