PIC16LF18345T-I/SS - 8-bit 32MHz XLP MCU 14KB Flash | Microchip
MPN: PIC16LF18345T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.27 | $12.70 |
| 100 | $1.09 | $109.00 |
| 500 | $0.96 | $480.00 |
| 1,000 | $0.87 | $870.00 |
| 3,000 | $0.79 | $2,370.00 |
PIC16LF18345T-I/SS Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, I/O ports and peripherals around an 8-bit data path. The PIC16 family uses a Harvard RISC architecture with a 14-bit instruction word and a single accumulator (WREG) plus up-to-32-level hardware stack, balancing deterministic interrupt response with ultra-low power consumption. Within the broader taxonomy, the PIC16LF18345 belongs to the PIC16F1xxx enhanced mid-range core family, which sits above baseline PIC10/12/16 parts and below the 16-bit dsPIC33 and 32-bit PIC32 families.
Key differentiating features of the PIC16LF18345 include its 32 MHz core with 125 ns instruction cycle, the Peripheral Pin Select (PPS) system that remaps digital peripherals to almost any I/O pin, four Configurable Logic Cells acting as on-chip glue logic, the Numerically Controlled Oscillator for high-resolution frequency generation without an external crystal, and a Complementary Waveform Generator for half-bridge and full-bridge drive. XLP technology delivers sub-µA sleep currents down to ~30 nA in Sleep mode with RTCC, making it one of the lowest-power 8-bit MCUs in its class.
Typical applications include low-power IoT sensor nodes, battery-powered remote controls, LED lighting controllers, consumer white goods user interfaces, simple BLDC or stepper motor drive, and home automation nodes. The combination of CLC, NCO and CWG allows many of these designs to operate without external logic or timing ICs.
When designing with this device, plan the ICSP/ICD pins (PGED/PGEC) into the PCB layout and provide adequate decoupling (100 nF plus 1 µF bulk) close to VDD/VSS. The 'LF' suffix indicates the 1.8V-3.6V low-voltage variant; for 2.0V-5.5V operation choose the PIC16F18345T-I/SS in the same 20-SSOP package.
This page synthesizes distributor pricing, drop-in alternatives in the same 20-SSOP footprint, and practical design notes - including PPS routing and XLP sleep-current optimization - not collected in any single manufacturer document.
Drop-in alternatives for PIC16LF18345T-I/SS — 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 PIC16LF18345T-I/SS (same form factor and footprint) — differing in Package, Operating Temperature, DAC, ADC, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF18345-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.18 / Unit
View Datasheet →PIC16F18345T-I/SS
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →PIC16LF18344T-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.12 / Unit
View Datasheet →PIC16LF15344T-I/SS
✅ Drop-In✓ In Stock
$0.86 / Unit
View Datasheet →PIC16LF18345T-I/SS Maximum Ratings & Electrical Characteristics
| Family | PIC16F1xxx enhanced mid-range |
| Core Architecture | 8-bit Harvard RISC |
| Instruction Set | 14-bit PIC16 (35 instructions) |
| Maximum CPU Clock | 32 MHz |
| Instruction Cycle Time | 125 ns @ 32 MHz |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data SRAM | 1 KB |
| Data EEPROM | 256 B |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| Operating Temperature | -40 C to +85 C (Industrial, I grade) |
| I/O Pins | 18 |
| Package | 20-pin SSOP (5.30 mm body, 0.65 mm pitch) |
| ADC | 10-bit, up to 17 channels |
| DAC | 5-bit, 1 channel |
| Comparators | 2 |
| PWM / CCP | 10-bit PWM with 4 CCP modules |
| Communication | EUSART, SPI, I2C (all with PPS) |
| Special Peripherals | CLC x4, NCO, CWG, PPS |
| Sleep Current (XLP) | ~30 nA typical with RTCC |
| Watchdog Timer | Yes (WWDT, software-selectable) |
| Mounting Type | Surface Mount |
| MSL Level | MSL1 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
PIC16LF18345T-I/SS Pin Configuration
| Pin 1 | RA2 — Bidirectional I/O / analog input ANA2 / CWG1IN |
| Pin 2 | RA3 — Bidirectional I/O / analog input ANA3 / Vref+ |
| Pin 3 | RA4 — Bidirectional I/O / analog input ANA4 / CWG1OUT |
| Pin 4 | RA5 — Bidirectional I/O / analog input ANA5 / MCLR |
| Pin 5 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
| Pin 6 | VSS — Ground reference |
| Pin 7 | RA1 — Bidirectional I/O / analog input ANA1 / ICSPCLK |
| Pin 8 | RA0 — Bidirectional I/O / analog input ANA0 / ICSPDAT |
| Pin 9 | RA7 — Bidirectional I/O / oscillator input |
| Pin 10 | RA6 — Bidirectional I/O / oscillator output |
| Pin 11 | RC0 — Bidirectional I/O / analog input ANL0 / SOSCO |
| Pin 12 | RC1 — Bidirectional I/O / analog input ANL1 / SOSCI |
| Pin 13 | RC2 — Bidirectional I/O / analog input ANL2 |
| Pin 14 | RC3 — Bidirectional I/O / analog input ANL3 / SCL (PPS) |
| Pin 15 | RC4 — Bidirectional I/O / SDA (PPS) |
| Pin 16 | RC5 — Bidirectional I/O / SDO (PPS) |
| Pin 17 | RC6 — Bidirectional I/O / TX/CK (PPS) |
| Pin 18 | RC7 — Bidirectional I/O / RX/DT (PPS) |
| Pin 19 | RB7 — Bidirectional I/O / ICDPGED |
| Pin 20 | RB6 — Bidirectional I/O / ICDPGEC |
Typical Applications
PIC16LF18345T-I/SS is suitable for 6 applications: Battery-Powered IoT Sensor Node, LED Lighting Controller with Color Mixing, Home Appliance User Interface Board, Handheld Remote Control / Wireless HMI, BLDC / Small Motor Controller, Industrial Sensor Transmitter (4-20 mA / 0-10 V).
Battery-Powered IoT Sensor Node
The PIC16LF18345T-I/SS is well-suited for coin-cell or 2xAAA battery-powered IoT sensor nodes because its eXtreme Low Power (XLP) technology achieves approximately 30 nA Sleep current with RTCC running, while its 32 MHz core provides ~8 MIPS to compress active processing time. The 10-bit ADC supports direct connection to temperature, humidity, and light sensors; PPS routes EUSART/SPI/I2C onto any digital pin so a single MCU footprint serves multiple RF module variants. Versus a 32-bit Cortex-M0+ alternative, the PIC16LF18345 keeps BOM cost around $0.85 at 1k pieces and offers simpler interrupt-driven firmware for sensor-fusion tasks.
Recommended
LED Lighting Controller with Color Mixing
The PIC16LF18345T-I/SS drives RGBW LED strips using its 10-bit PWM with 4 CCP channels and the Complementary Waveform Generator (CWG), which generates complementary outputs with programmable dead-band and auto-shutdown - exactly what is required for high-current MOSFET half-bridge or full-bridge LED drivers. The Configurable Logic Cell (CLC) blocks implement input debouncing and zero-crossing detection without external gates. The 5-bit DAC sets a global current reference, and PPS routes PWM to any pin, so the same PCB handles 4-channel and 6-channel variants. Sleep current stays in the tens of nanoamps between wireless commands.
Recommended
Home Appliance User Interface Board
In a washing machine or microwave user-interface board, the PIC16LF18345T-I/SS drives the LCD/LED display, scans the keypad matrix, and handles the buzzer/timer through its 18 I/O pins plus PPS remap. The on-chip CWG generates the piezo-buzzer tone without external timers, and the NCO provides a frequency reference for the appliance clock independent of the main oscillator. Wide industrial temperature range (-40C to +85C) suits unheated enclosures. Compared to a discrete logic + 555-timer approach, the PIC16LF18345 saves roughly 30-40% BOM cost and enables firmware-driven feature differentiation across product variants.
Recommended
Handheld Remote Control / Wireless HMI
The PIC16LF18345T-I/SS is a strong fit for handheld remote controls because its 32 MHz core delivers the throughput needed for AES-128 encryption of wireless packets while XLP Sleep keeps standby current around 30 nA - extending coin-cell life past two years. The Numerically Controlled Oscillator (NCO) generates accurate 32.768 kHz modulation sidebands without a PLL, and PPS allows the same firmware to drive either SPI-based 2.4 GHz (e.g. nRF24) or sub-GHz (CC1101) radios. Watchdog and BOR protect against low-battery brownouts.
Recommended
BLDC / Small Motor Controller
For small sensorless BLDC fans or stepper motor controllers, the PIC16LF18345T-I/SS uses its 10-bit ADC for back-EMF sensing, the CWG with programmable dead-band for complementary FET drive, and the NCO to synthesize the commutation frequency reference. Two on-chip comparators handle zero-crossing detection directly. The 32 MHz core runs the sensorless commutation algorithm with sub-microsecond loop time. The 20-SSOP package keeps the controller board under 10 mm x 10 mm, suitable for 5V USB-powered fans or 12V appliance motors.
Recommended
Industrial Sensor Transmitter (4-20 mA / 0-10 V)
The PIC16LF18345T-I/SS serves as the digital heart of an industrial 4-20 mA or 0-10 V analog sensor transmitter: its 10-bit ADC digitizes the bridge/strain/RTD sensor, the 5-bit DAC generates the loop current setpoint, and the EUSART drives the HART modem or RS-485 link. Industrial temperature range (-40C to +85C) and the 1.8V minimum VDD support loop-powered 2-wire designs. Compared to a discrete op-amp solution, the integrated MCU reduces BOM count and enables field-calibration via the EEPROM rather than trimpots.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF18345T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF18345-I/SS | PIC16F18345T-I/SS | PIC16LF18344T-I/SS | PIC16LF15344T-I/SS |
|---|---|---|---|---|---|
| Package | 20-SSOP | 20-SSOP (same) | 20-SSOP (same) | 20-SSOP (same) | 20-SSOP (same) |
| Brand | Microchip Technology | Microchip Technology (same) | Microchip Technology (same) | Microchip Technology (same) | Microchip Technology (same) |
| Flash Program Memory | 14 KB | 14 KB | 14 KB | 7 KB | 7 KB |
| Data SRAM | 1 KB | 1 KB | 1 KB | 512 B | 512 B |
| Data EEPROM | 256 B | 256 B | 256 B | 256 B | 224 B |
| Supply Voltage (VDD) | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.0 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Maximum Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Special Peripherals (CLC/NCO/CWG) | CLC x4, NCO, CWG | CLC x4, NCO, CWG | CLC x4, NCO, CWG | CLC x4, NCO, CWG | No CWG/NCO |
Key Differentiators
- Lower operating voltage floor (1.8 V vs 2.0 V) (vs PIC16F18345T-I/SS)
- Deeper peripheral integration (CLC, NCO, CWG) (vs PIC16LF15344T-I/SS)
- Larger Flash memory (14 KB vs 7 KB) (vs PIC16LF18344T-I/SS)
Design Notes
Decoupling is critical on the PIC16LF18345T-I/SS: place a 100 nF X7R ceramic capacitor within 3 mm of the VDD pin and a bulk 1 µF-10 µF tantalum or ceramic on the same node. For designs using the 32.768 kHz SOSC crystal on RC0/RC1, add 10-22 pF load caps matched to the crystal's CL. Estimated: with these caps and Sleep mode (RTCC running, WDT disabled) the part draws approximately 30 nA - enabling 2-year coin-cell life in typical sensor duty cycles.
The 'LF' suffix pins VDD to 1.8V-3.6V. Do NOT power the PIC16LF18345T-I/SS from a 5V rail - the part has no internal 5V tolerance and will latch up. If your design supplies 5V (e.g. from USB), choose the PIC16F18345T-I/SS in the same 20-SSOP footprint. Also note that the LF variant's BOR is set by configuration fuses and must be enabled; with BOR disabled, a slow-rising supply can cause undefined code execution.
Pin 1 (RA2) and pin 20 (RB6) are shared with MCLR and ICSP, so reserve a small test-pad pattern on the PCB for in-circuit programming. Keep the ICSP traces (PGED/PGEC) short (<50 mm) and route them away from switching nodes and PWM outputs to avoid programming glitches. Per the Microchip ICD/PICkit 4 design guide, add a 4.7 kΩ pull-up on MCLR if you want a clean reset during programming.
Compliance Information
RoHS and REACH compliant per Microchip product declaration; lead-free matte-tin finish. Not AEC-Q100 qualified (no -VAO suffix in this part number) - for automotive designs use the PIC16F18345T-I/SSVAO grade parts.
