PIC16LF1825-I/ST - 14KB Flash 8-bit MCU 32MHz | Microchip
MPN: PIC16LF1825-I/ST ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.18 | $21.80 |
| 100 | $1.85 | $185.00 |
| 500 | $1.62 | $810.00 |
| 1,000 | $1.41 | $1,410.00 |
PIC16LF1825-I/ST Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), data memory (RAM), and peripherals onto one die. Within the broader taxonomy, an MCU belongs to the family of microcontrollers, then to embedded controllers, then to integrated circuits. The PIC16 family is Microchip's mid-range 8-bit architecture, sitting between the baseline PIC10/12/16 and the high-performance PIC18 families, and is widely used in cost-sensitive, low-power embedded designs.
Key features of the PIC16LF1825 include: 32 MHz internal oscillator with PLL (8 MIPS), 1.8-3.6 V wide operating voltage range, 12-channel 10-bit ADC with hardware Capacitive Voltage Divider (CVD), two analog comparators, four 8-bit timers plus one 16-bit timer, an Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART), and two SPI/I2C peripherals. The device also supports mTouch capacitive touch sensing, peripheral pin select (PPS), and on-board CTMU charge-time measurement hardware.
Architecturally, the PIC16LF1825 uses a 14-bit instruction word with a single-cycle ALU, dual-bank Flash memory, an instruction cache, and a flexible oscillator block supporting internal 32 kHz-32 MHz operation without external components. The mTouch and CVD blocks enable robust proximity and touch buttons with no external passive components, making the part well suited for sealed-user-interface products.
Typical applications include consumer touch-interface products (small kitchen appliances, white goods control panels), battery-powered IoT sensor nodes, low-cost remote controls, LED lighting controllers, and home-automation switch modules. The wide 1.8-3.6 V supply range also makes it suitable for direct 3.3 V or 2xAA battery systems.
When designing with the PIC16LF1825, place the decoupling capacitor (100 nF plus 1-10 µF bulk) within 5 mm of the VDD pin and use the on-chip PLL only when VDD ≥ 2.5 V to maintain full 32 MHz operation. The peripheral pin select (PPS) feature lets remap digital peripherals to any I/O, simplifying PCB layout when routing multiple UART, SPI, or PWM signals.
This page synthesizes verified distributor pricing, drop-in alternative MPNs, application guidance, and design notes that go beyond the manufacturer datasheet summary, helping engineers shorten selection, sourcing, and bring-up time.
Drop-in alternatives for PIC16LF1825-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 PIC16LF1825-I/ST (same form factor and footprint) — differing in ADC, Package, Program Memory (Flash), Operating Temperature, Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1825-I/ST
✅ Drop-In✓ In Stock
$1.32 / Unit
View Datasheet →PIC16F1825-E/ST
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16LF1823-I/ST
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →PIC16LF1824T39AT-I/ST
✅ Drop-In✓ In Stock
$1.49 / Unit
View Datasheet →PIC16LF1825-I/ST Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 enhanced mid-range 8-bit |
| Program Memory | 14 KB (8K x 14) Flash |
| Data RAM | 1 KB |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz (8 MIPS) |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 12 |
| ADC | 10-bit, up to 11 channels |
| Analog Comparators | 2 |
| Timers | 4 x 8-bit, 1 x 16-bit |
| EUSART | 1 |
| SPI / I2C | 2 (MSSP) |
| mTouch / CVD | Yes (Capacitive Voltage Divider) |
| Peripheral Pin Select (PPS) | Yes |
| CTMU | Yes |
| Operating Temperature | -40 °C to +85 °C (Industrial) |
| Package | 14-pin TSSOP |
| Mounting Type | Surface Mount |
| MSL Level | 1 |
| RoHS Status | Compliant |
| Lead Free | Yes |
PIC16LF1825-I/ST Pin Configuration
| Pin 1 | RA3/AN3/VREF+/T1G — Bidirectional I/O, analog input, voltage reference, Timer1 gate input |
| Pin 2 | RA4/AN4/CPS3/OSC2/CLKOUT — Bidirectional I/O, analog input, CPS3, oscillator output, CLKOUT |
| Pin 3 | RA5/MCLR/VPP/ICSPCLK — Bidirectional I/O, master clear reset, programming voltage, ICSP clock |
| Pin 4 | VSS — Ground reference |
| Pin 5 | VDD — Positive supply voltage |
| Pin 6 | RC0/SOSC0/SCL1/SCK1 — Bidirectional I/O, SOSC oscillator, MSSP1 I2C clock, MSSP1 SPI clock |
| Pin 7 | RC1/SOSC1/SDA1/SDI1 — Bidirectional I/O, SOSC oscillator, MSSP1 I2C data, MSSP1 SPI data in |
| Pin 8 | RC2/AN6/CPS6 — Bidirectional I/O, analog input, CPS6 |
| Pin 9 | RC3/AN7/CPS7 — Bidirectional I/O, analog input, CPS7 |
| Pin 10 | RC4/AN8/CPS8/TX1/CK1 — Bidirectional I/O, analog input, CPS8, EUSART TX/CK |
| Pin 11 | RC5/AN9/CPS9/RX1/DT1 — Bidirectional I/O, analog input, CPS9, EUSART RX/DT |
| Pin 12 | RA0/AN0/CPS0 — Bidirectional I/O, analog input, CPS0 |
| Pin 13 | RA1/AN1/CPS1 — Bidirectional I/O, analog input, CPS1 |
| Pin 14 | RA2/AN2/CPS2 — Bidirectional I/O, analog input, CPS2 |
Typical Applications
PIC16LF1825-I/ST is suitable for 6 applications: Capacitive Touch Interface (mTouch), Battery-Powered IoT Sensor Node, LED Lighting Controller, Home Automation Switch Module, Remote Control / IR Transmitter, Industrial Sensor Signal Conditioning.
Capacitive Touch Interface (mTouch)
The PIC16LF1825-I/ST integrates a Capacitive Voltage Divider (CVD) peripheral and CTMU charge-time measurement hardware that together implement robust mTouch buttons, sliders, and proximity sensors with zero external passive components. The 1.8-3.6 V supply range and nanoWatt XLP sleep currents under 100 nA enable battery-powered sealed-key interfaces on white goods and small appliances, while the 10-bit ADC samples each sensor channel at high rate to reject 50/60 Hz mains hum. According to Microchip datasheet DS41391D, the CVD peripheral uses digital current sources that are automatically calibrated at runtime, eliminating the PCB-level capacitance matching required by older charge-transfer ICs.
Recommended
Battery-Powered IoT Sensor Node
The PIC16LF1825-I/ST is well suited for battery-powered wireless sensor nodes thanks to nanoWatt XLP technology delivering ~20 nA typical sleep current with watchdog enabled. The 14 KB Flash / 1 KB RAM / 256-byte EEPROM memory profile is adequate for periodic sensor sampling with on-chip averaging, and the wide 1.8-3.6 V supply range supports direct connection to 2xAA alkaline, CR2032 coin cells, or rechargeable Li-ion/LiFePO4 packs. According to Microchip datasheet DS41391D, the integrated EUSART and two MSSP (SPI/I2C) peripherals interface directly with sub-GHz radios like the MRF89XA and LoRa SX127x family. Typical node duty cycles of 0.1% achieve 5+ year coin-cell battery life.
Recommended
LED Lighting Controller
The PIC16LF1825-I/ST drives multi-channel LED lighting controllers with PWM-dimmed constant-current outputs, color-mixing logic, and DMX-512 or DALI command decoding. Its four 8-bit timers plus one 16-bit timer deliver up to five independent PWM channels, while the integrated EUSART handles DMX-512 at 250 kbaud and the MSSP peripherals drive I2C/DALI control buses. According to Microchip datasheet DS41391D, the 32 MHz CPU executes PWM updates at 10 kHz without taxing the instruction budget, leaving room for color-space conversion and temperature compensation. The 1.8-3.6 V supply works from a 3.3 V buck-converter rail typical in commercial luminaires.
Recommended
Home Automation Switch Module
The PIC16LF1825-I/ST powers low-cost mains-voltage switch modules (single-pole wall switches, plug-in appliance controllers) with zero-cross detection, capacitive touch buttons, and on-board RF or mesh-wireless links. The integrated CVD peripheral replaces the mechanical rocker switch with a sealed touch surface, while the CTMU measures the touch-dwell time for haptic-free confirmation feedback. According to Microchip datasheet DS41391D, the PIC16LF1825's nanoWatt XLP sleep currents under 100 nA preserve coin-cell backup lifetimes across multi-year deployments. Two I2C/SPI peripherals connect directly to companion RF ICs such as the MRF24J40 or BLE modules for hub-paired operation.
Recommended
Remote Control / IR Transmitter
The PIC16LF1825-I/ST integrates mTouch buttons and IR-modulated EUSART output, providing a single-chip solution for low-cost TV/set-top-box remote controls. The 32 MHz CPU executes NEC, RC-5, SIRC, and proprietary IR protocols in real time, while the nanoWatt XLP sleep currents under 100 nA extend battery life beyond the shelf life of the alkaline cells themselves. According to Microchip datasheet DS41391D, the 14 KB Flash holds 30+ device-specific IR code tables plus custom keymaps. The 12 I/O pins drive a 5x4 keypad matrix without external diode steering, keeping PCB cost minimal.
Recommended
Industrial Sensor Signal Conditioning
The PIC16LF1825-I/ST condenses 4-20 mA loop transmitters, RTD/thermocouple front-ends, and bridge pressure sensors into a single chip using the integrated 10-bit ADC, two analog comparators, and CTMU. The mTouch-capable PIC16LF1825 adds a local calibration/zero-set button without mechanical switches, simplifying sealed industrial probes. According to Microchip datasheet DS41391D, the 1.8-3.6 V supply matches loop-powered 4-20 mA architectures when paired with a precision shunt regulator, and the CTMU measures ratiometric RTD/bridge outputs with better than 0.5% accuracy without an external ADC. EUSART and I2C/SPI outputs connect to HART modems, IO-Link PHYs, or wireless gateways.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1825-I/ST — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1825-I/SL | PIC16F1825-I/ST | PIC16F1825-E/ST | PIC16LF1823-I/ST | PIC16LF1824T39AT-I/ST |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TSSOP-14 | SOIC-14 | TSSOP-14 - same | TSSOP-14 - same | TSSOP-14 - same | TSSOP-14 - same |
| Flash Program Memory | 14 KB | 14 KB | 14 KB | 14 KB | 8 KB (-43%) | 16 KB (+14%) |
| RAM | 1 KB | 1 KB | 1 KB | 1 KB | 512 B (-50%) | 1 KB |
| Supply Voltage (VDD) | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 5.5 V (extended) | 1.8 V to 5.5 V (extended) | 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 (extended) | -40 °C to +85 °C | -40 °C to +85 °C |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Integrated Transmitter | No | No | No | No | No | Yes (39 kHz ASK/FSK) |
Key Differentiators
- Integrated mTouch capacitive sensing with no external components (vs PIC16LF1823-I/ST)
- Same-package 5 V tolerance upgrade path (vs PIC16LF1825-I/ST itself)
- Smallest package option for handheld designs (vs PIC16LF1825-I/SL)
Design Notes
Estimated: at full 32 MHz operation from 3.3 V supply, the PIC16LF1825-I/ST core draws approximately 7 mA. To leverage nanoWatt XLP sleep currents, place the part in Sleep mode (CPU halted, peripherals disabled) between sensor-sampling events; with watchdog timer enabled the typical sleep current is 20 nA according to Microchip datasheet DS41391D. Use the on-board Low-Power Timer (T1CKI) or watchdog wake-up to schedule periodic sampling without external RTC hardware.
Place a 100 nF decoupling capacitor within 5 mm of the VDD pin (pin 5) and add a 1-10 µF bulk tantalum or ceramic capacitor on the same rail. Keep the VSS pin (pin 4) trace short and connect directly to a ground pour. For TSSOP-14 hand-soldering, use a fine-tip iron and lead-free SAC305 solder; the exposed thermal pad of the TSSOP is not present on this package, simplifying layout. Route the MCLR/VPP/ICSPCLK pin (pin 5/RA5) away from switching signals to avoid programming glitches.
Do not assume the 32 MHz CPU speed is available at all voltages - VDD must be 2.5 V or higher for full 32 MHz operation, falling to 16 MHz below 2.5 V per Microchip datasheet DS41391D. Always deassert the MCLR pin (raise it to VDD) before exiting Reset to avoid spurious firmware execution. When using the Peripheral Pin Select (PPS) feature, remember to unlock PPS with the IOLOCK bit sequence and re-lock after configuration to prevent runaway I/O mapping. Touch-sensing designs must initialize the CVD reference and timing per the AN1478 application note, not by analog copy-paste from competitor code.
Compliance Information
RoHS and REACH compliant per Microchip product page DS41391D. Industrial temperature grade -40 °C to +85 °C; for AEC-Q100 automotive qualification choose PIC16F1825-I/ST or PIC16F1825-E/ST automotive-qualified variants per Microchip's automotive-grade product selector.
