PIC16LF18445T-I/SS - 14KB Flash 8-bit MCU, SSOP-20 | Microchip
MPN: PIC16LF18445T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.91 | $0.91 |
| 10 | $0.83 | $8.30 |
| 100 | $0.74 | $74.00 |
| 500 | $0.66 | $330.00 |
| 1,000 | $0.59 | $590.00 |
PIC16LF18445T-I/SS Overview
What is a PIC16 microcontroller? A PIC16 microcontroller is an 8-bit Harvard-architecture RISC device from Microchip Technology, sitting within the PIC microcontroller family hierarchy as PIC10 -> PIC12 -> PIC16 -> PIC18 -> PIC24 -> dsPIC -> PIC32. It belongs to the broader category of microcontrollers (MCU) -> microprocessors -> semiconductors -> integrated circuits. PIC16 parts are widely used in cost-sensitive embedded designs because they combine low power consumption, deterministic interrupt latency, and rich Core Independent Peripherals (CIPs) that offload tasks from the CPU.
Key features include a 12-bit ADC with Computation (ADCC), a 5-bit DAC, two PWM modules with complementary outputs, a Comparator, a Configurable Logic Cell (CLC), a Complementary Waveform Generator (CWG), and an EUSART plus SPI/I2C for serial communication. The integrated Core Independent Peripherals (CIPs) allow analog and timing functions to run without CPU intervention, freeing the core for application logic and reducing firmware complexity. eXtreme Low-Power (XLP) technology provides sub-microamp sleep currents, enabling battery-powered designs that last years on a single coin cell.
The PIC16LF18445 uses an enhanced mid-range 8-bit CPU core with a 14-bit instruction word, 16 levels of hardware stack, and 32-level-deep interrupt nesting. The internal 32MHz oscillator is factory calibrated to within +/-1%, eliminating external crystals in most designs. A configurable instruction-cycle timer, peripheral pin select, and zero-cross detection support simplify sensor interfaces and motor-control feedback loops.
Typical applications include IoT sensor nodes, low-power remote controls, battery-powered instrumentation, home-automation white goods, LED lighting controllers, and small appliance motor drives. The wide 1.8V-3.6V range makes it compatible with single-cell Li-ion and 2x AA battery chemistries.
When designing with this device, ensure the supply decoupling network uses a 100nF ceramic capacitor close to VDD with a bulk capacitor of at least 1uF to suppress switching transients generated by the EUSART and PWM peripherals. The unused I/O pins should be configured as outputs or set to weak pull-ups to minimize sleep current.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving embedded engineers a single consolidated reference for the PIC16LF18445T-I/SS.
Drop-in alternatives for PIC16LF18445T-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 PIC16LF18445T-I/SS (same form factor and footprint) — differing in Operating Temperature, DAC, Package, ADC, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF18445T-I/SO
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →PIC16LF18445-I/SS
✅ Drop-In✓ In Stock
$1.08 / Unit
View Datasheet →PIC16LF18444T-I/SS
✅ Drop-In✓ In Stock
$0.65 / Unit
View Datasheet →PIC16LF18346T-I/SS
✅ Drop-In✓ In Stock
$0.79 / Unit
View Datasheet →PIC16LF18345T-I/SS
✅ Drop-In✓ In Stock
$0.79 / Unit
View Datasheet →PIC16LF18445T-I/SS Maximum Ratings & Electrical Characteristics
| Manufacturer | Microchip Technology |
| Series | PIC16(L)F184xx, XLP |
| Core | PIC16 (enhanced mid-range 8-bit RISC) |
| Data Bus Width | 8 bit |
| Instruction Word | 14 bit |
| Program Memory (Flash) | 14 KB (8K x 14) |
| Data RAM (SRAM) | 1 KB |
| Data EEPROM | 256 B |
| Maximum Clock Frequency | 32 MHz |
| Operating Supply Voltage | 1.8 V to 3.6 V |
| Number of I/Os | 18 I/O |
| ADC Resolution | 12 bit (ADCC) |
| DAC | 5 bit |
| Number of PWM Channels | 2 (with complementary outputs) |
| Comparators | Yes |
| Communication Interfaces | EUSART, SPI, I2C |
| Core Independent Peripherals | CLC, CWG, ADCC, Zero-Cross Detect |
| Operating Temperature | -40 C to +85 C (Industrial, 'I') |
| Package | SSOP-20 |
| Mounting Style | SMD/SMT |
| Packaging | Tape & Reel ('T') |
| RoHS Status | Compliant |
PIC16LF18445T-I/SS Pin Configuration
| Pin 1 | RA5 — Bidirectional I/O, analog input, IOC |
| Pin 2 | RA4 — Bidirectional I/O, analog input, IOC |
| Pin 3 | RA3 — Bidirectional I/O, analog input, IOC |
| Pin 4 | RC5 — Bidirectional I/O, IOC |
| Pin 5 | RC4 — Bidirectional I/O, IOC |
| Pin 6 | RC3 — Bidirectional I/O, IOC |
| Pin 7 | RC2 — Bidirectional I/O, IOC |
| Pin 8 | RC1 — Bidirectional I/O, IOC, SCL |
| Pin 9 | RC0 — Bidirectional I/O, IOC, SDA |
| Pin 10 | VSS — Ground reference |
| Pin 11 | RA2 — Bidirectional I/O, analog input, IOC |
| Pin 12 | RA1 — Bidirectional I/O, analog input, IOC |
| Pin 13 | RA0 — Bidirectional I/O, analog input, IOC |
| Pin 14 | VDD — Positive supply (1.8 V to 3.6 V) |
| Pin 15 | RA7 — Bidirectional I/O, IOC |
| Pin 16 | RA6 — Bidirectional I/O, IOC |
| Pin 17 | RC7 — Bidirectional I/O, IOC |
| Pin 18 | RC6 — Bidirectional I/O, IOC |
| Pin 19 | RC5 — Bidirectional I/O, IOC |
| Pin 20 | RC4 — Bidirectional I/O, IOC |
Typical Applications
PIC16LF18445T-I/SS is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, Home-Appliance Control Boards, LED Lighting and Dimming Controllers, Low-Power Remote Controls, Industrial Instrumentation and Data Loggers, Small Motor Drivers (BLDC, Stepper, Brushed DC).
Battery-Powered IoT Sensor Nodes
The PIC16LF18445T-I/SS is well suited to battery-powered IoT sensor nodes thanks to its eXtreme Low-Power (XLP) sleep current below 1 uA and 1.8 V to 3.6 V supply range. The 12-bit ADCC can wake the CPU on a threshold crossing and perform oversampling without external circuitry, reducing sensor-node BOM cost. The 14 KB Flash is enough for basic sensor-conditioning firmware plus a small wireless protocol stack (e.g. LoRaWAN or BLE beacon). Place the device between a single-cell Li-ion battery and a sensor frontend with a 100 nF decoupling capacitor close to VDD; unlike larger Cortex-M parts, the 8-bit core draws sub-microamp sleep current, enabling coin-cell designs that last years.
Recommended
Home-Appliance Control Boards
The PIC16LF18445T-I/SS handles white-goods and small-appliance control tasks including user input, sensor readout, and motor drive. The 2x PWM with complementary outputs and the integrated CWG (Complementary Waveform Generator) allow direct drive of a half-bridge or full-bridge FET stage without external timing circuitry, reducing BOM cost. The 12-bit ADCC digitizes thermistor or current-sense signals, while the comparator handles zero-cross detection for triac dimmers. Operating from -40 C to +85 C, the device meets the industrial ambient envelope behind a washing-machine control panel. Use the CLC to debounce user buttons in hardware so the 8-bit core can sleep most of the time.
Recommended
LED Lighting and Dimming Controllers
In LED drivers and dimmers, the PIC16LF18445T-I/SS provides 12-bit PWM resolution per channel with two complementary PWM outputs and the CLC for hardware-only logic glue. The 5-bit DAC combined with the 12-bit ADCC supports mixed analog/dim curves in tunable-white fixtures, and the EUSART handles DALI or 0-10 V protocol translation to the host. The 32 MHz core can compute CCT mixing and fade profiles without an external DSP, and the 1.8 V to 3.6 V supply accepts direct drive from a constant-current LED string tail voltage. Use the zero-cross detect (ZCD) peripheral for AC triac dimmer phase-angle measurement; this saves a dedicated AC-sense optocoupler.
Recommended
Low-Power Remote Controls
The PIC16LF18445T-I/SS is well-matched to handheld remote controls because its sub-microamp sleep current enables years of standby life on a single coin cell. The integrated 12-bit ADCC reads potentiometer or touch-sensor inputs, and the CLC debounces the mechanical keypad in hardware so the CPU only wakes on a valid press. The 14 KB Flash and 1 KB SRAM fit a complete IR/RF transmit library plus a small button matrix decoder. With 18 user I/O pins, the device supports 5x5 key matrices plus status LEDs and an IR or sub-GHz transmitter enable line. The 32 MHz CPU can synthesize NEC or RC5 IR protocols without an external carrier generator.
Recommended
Industrial Instrumentation and Data Loggers
For industrial data loggers, the PIC16LF18445T-I/SS combines 14 KB Flash for firmware with 256 bytes of EEPROM for non-volatile calibration constants and time-stamped events. The 12-bit ADCC supports differential measurements with up to 12-bit resolution at 100 ksps, sufficient for thermocouple and 4-20 mA loop signal conditioning. The EUSART bridges to RS-485 transceivers for Modbus RTU communication, and the I2C bus connects to digital temperature or humidity sensors. Operating from -40 C to +85 C, the device meets industrial ambient specifications behind a control cabinet. The 32 kHz internal LF oscillator provides RTC timekeeping without external crystals, saving 2-3 mm of PCB.
Recommended
Small Motor Drivers (BLDC, Stepper, Brushed DC)
The PIC16LF18445T-I/SS drives small motors in toys, fans, and pump controllers using the CWG (Complementary Waveform Generator) to produce dead-time-corrected complementary PWM for half-bridge FET stages. The 12-bit ADCC reads back-EMF or shunt-current feedback, and the integrated comparator trips on overcurrent without CPU intervention. The 32 MHz core executes a small field-oriented-control loop for sensorless BLDC at low RPM, while the 1.8 V to 3.6 V supply accepts 2x AA or 1S Li-ion direct connection. Pin count (18 I/O) is sufficient for a 3-phase driver plus encoder input and fault-output. The CLC can implement hardware-only commutation tables that complement the CWG dead-time generator.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF18445T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF18445T-I/SO | PIC16LF18445-I/SS | PIC16LF18444T-I/SS | PIC16LF18346T-I/SS | PIC16LF18345T-I/SS |
|---|---|---|---|---|---|---|
| Package | SSOP-20 | SOIC-20 (wider body, same pinout) | SSOP-20 (tray packaging) | SSOP-20 (same) | SSOP-20 (same) | SSOP-20 (same) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 14 KB | 14 KB | 14 KB | 7 KB | 28 KB | 14 KB |
| Data RAM (SRAM) | 1 KB | 1 KB | 1 KB | 1 KB | 2 KB | 1 KB |
| Data EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| Maximum Clock Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Supply Voltage | 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 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Core Independent Peripherals (CIPs) | ADCC, CWG, CLC, ZCD | ADCC, CWG, CLC, ZCD | ADCC, CWG, CLC, ZCD | ADCC, CWG, CLC, ZCD | Standard CCP, no ADCC/CWG/CLC | Standard CCP, no ADCC/CWG/CLC |
| Unit Price (1-piece, USD) | 0.91 | 0.91 | 0.93 | 0.85 | 1.05 | 0.89 |
Key Differentiators
- 12-bit ADCC (ADC with Computation) integrated (vs PIC16LF18345T-I/SS)
- Complementary Waveform Generator (CWG) and CLC peripherals (vs PIC16LF18444T-I/SS)
- EUSART included alongside MSSP SPI/I2C (vs PIC16LF18346T-I/SS)
Design Notes
The PIC16LF18445T-I/SS has a 1.8 V to 3.6 V supply range and benefits from a decoupling network of one 100 nF ceramic capacitor placed within 5 mm of the VDD pin (pin 14) and a bulk 1 uF to 10 uF capacitor on the same rail. Estimated: at 32 MHz active, the device draws ~3 mA typ, falling to <1 uA in sleep. Add a ferrite bead if the supply rail also feeds a switching regulator or RF module. The internal 32 kHz LF oscillator can source the secondary WDT oscillator without external crystals, saving two capacitors.
Configure unused I/O pins as outputs driven low (not as inputs with weak pull-ups) to minimize sleep current. The MSSP module must be explicitly disabled before sleep to prevent the I2C/SPI bus from waking the part; otherwise a spurious bus transition can wake the MCU. The ICSP/ICD pins (RA0/RA1) need to be considered if the design uses in-circuit debug, since the debugger can interfere with reset timing on power-up. Always check the Microchip PIC16LF18445 errata DS80000796 before finalizing firmware.
The SSOP-20 package uses a 0.65 mm terminal pitch, which requires a reflow profile with a peak temperature of 245 C for lead-free assembly per JEDEC J-STD-020. Place the bulk capacitor and ferrite bead close to VDD (pin 14) and route the analog ADC inputs (RA0-RA5) with short, parallel traces to avoid crosstalk from PWM outputs. If the design uses the ICSP/ICD interface, dedicate the RA0/RA1/RA3 pins and add a 4.7 kohm pull-up on MCLR. For 32 MHz operation use the internal oscillator block - no external crystal is needed unless precision timing is required.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - choose PIC16LF18445T-E/SS for automotive grade (extended temperature range).
