PIC16LF19185T-I/PT - 8-bit MCU 14KB Flash 32MHz 48-TQFP | Microchip
MPN: PIC16LF19185T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.1 | $3.10 |
| 10 | $2.79 | $27.90 |
| 100 | $2.45 | $245.00 |
| 500 | $2.18 | $1,090.00 |
| 1,000 | $1.95 | $1,950.00 |
PIC16LF19185T-I/PT Overview
A PIC microcontroller is an 8-bit RISC MCU based on a Harvard architecture with separate program and data buses, designed for deterministic real-time control with very low active and sleep currents. The PIC16 family sits between the smaller PIC10/PIC12 baseline parts and the 16-bit dsPIC®/PIC24 families, targeting low-power embedded control in consumer, industrial, and IoT applications. The LF prefix denotes the wide-voltage 1.8V-3.6V operating range typical of XLP battery-powered designs.
Key features of the PIC16LF19185T-I/PT include 14 KB self-programmable Flash, 1 KB RAM, a hardware 12-bit ADC with automated Capacitive Voltage Divider (CVD) for touch and proximity sensing, multiple PWM modules with complementary outputs, on-chip 5-bit and 8-bit DACs, and a peripheral pin select (PPS) engine that remaps digital peripherals to any I/O. The XLP variant adds deep sleep currents below 100 nA typical with retention, suiting battery-operated sensor nodes that spend most of their lifetime in sleep.
Architecture-wise, the device uses Microchip's enhanced mid-range 8-bit CPU core with a hardware multiplier, 16-level stack, and C-compiler friendly architecture (XC8). Internal oscillator accuracy is roughly ±2% over voltage and temperature, removing the need for an external crystal in many designs. The 48-TQFP package exposes up to 43 GPIO pins plus dedicated power, programming, and MCLR pins, giving engineers enough I/O for displays, keypads, motor PWM, and multiple analog channels.
Typical applications include consumer HMI with mTouch® capacitive buttons and sliders, low-power IoT sensor nodes, small home appliances, battery-powered medical wearables, LED lighting controllers, and industrial sensor interfaces. The combination of CVD touch hardware, 12-bit ADC, DAC, and PWM makes the PIC16LF19185T-I/PT well-suited to mixed-signal front-ends that previously required multiple discrete ICs.
When designing with this part, pay attention to the LF voltage range of 1.8V-3.6V (use the PIC16F19185 variant for 5V systems), route decoupling capacitors close to VDD/AVDD/VBAT pins, and program the unused I/O as outputs low to minimize sleep current. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical low-power design notes not consolidated on the manufacturer product page.
Drop-in alternatives for PIC16LF19185T-I/PT — 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 PIC16LF19185T-I/PT (same form factor and footprint) — differing in ADC, Communication, DAC, Operating Temperature, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF19185-I/PT
✅ Drop-In✓ In Stock
$1.82 / Unit
View Datasheet →PIC16LF19186T-I/PT
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View Datasheet →PIC16LF19176T-I/PT
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$1.74 / Unit
View Datasheet →PIC16LF19175T-I/PT
✅ Drop-In✓ In Stock
$0.9 / Unit
View Datasheet →PIC16LF18877-I/PT
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$1.62 / Unit
View Datasheet →PIC16LF18876-I/PT
✅ Drop-In✓ In Stock
$1.72 / Unit
View Datasheet →PIC16LF19185T-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC enhanced mid-range (Harvard, RISC) |
| Family | PIC® XLP™ 16F (PIC16LF191xx series) |
| Program Memory | 14 KB Flash (8K x 14 words) |
| Data RAM | 1 KB |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage | 1.8 V to 3.6 V (LF/XLP range) |
| I/O Pins | 43 (maximum) |
| ADC | 12-bit, with CVD for touch sensing |
| DAC | 5-bit and 8-bit on-chip DAC |
| PWM | Multiple PWM modules with complementary outputs |
| Communication | I2C, SPI, UART/USART, LIN |
| Package | 48-pin TQFP (PT), 7x7 mm |
| Operating Temperature | -40 C to +85 C (Industrial, I-temp) |
| Mounting Type | Surface Mount (SMD) |
| MSL Level | 3 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
| Peripheral Pin Select (PPS) | Yes |
| Hardware Multiplier | Yes (8x8) |
PIC16LF19185T-I/PT Pin Configuration
| Pin 1 | RA0 — Bidirectional I/O with analog AN0 input |
| Pin 2 | RA1 — Bidirectional I/O with analog AN1 input |
| Pin 3 | RA2 — Bidirectional I/O with analog AN2 input |
| Pin 4 | RA3 — Bidirectional I/O with analog AN3 input |
| Pin 5 | RA4 — Bidirectional I/O with analog AN4 input |
| Pin 6 | RA5 — Bidirectional I/O with analog AN5 input |
| Pin 7 | RA6 — Bidirectional I/O with analog AN6 input |
| Pin 8 | RA7 — Bidirectional I/O with analog AN7 input |
| Pin 9 | VSS — Ground reference |
| Pin 10 | RA8 — Bidirectional I/O |
| Pin 11 | RA9 — Bidirectional I/O |
| Pin 12 | RA10 — Bidirectional I/O |
| Pin 13 | RA11 — Bidirectional I/O |
| Pin 14 | RA12 — Bidirectional I/O |
| Pin 15 | RA13 — Bidirectional I/O |
| Pin 16 | RA14 — Bidirectional I/O |
| Pin 17 | RA15 — Bidirectional I/O |
| Pin 18 | VDD — Positive power supply (1.8V-3.6V) |
| Pin 19 | AVDD — Analog power supply |
| Pin 20 | AVSS — Analog ground |
| Pin 21 | RB0 — Bidirectional I/O with analog |
| Pin 22 | RB1 — Bidirectional I/O with analog |
| Pin 23 | RB2 — Bidirectional I/O with analog |
| Pin 24 | RB3 — Bidirectional I/O with analog |
| Pin 25 | RB4 — Bidirectional I/O with analog |
| Pin 26 | RB5 — Bidirectional I/O with analog |
| Pin 27 | RB6 — Bidirectional I/O / ICSP programming clock |
| Pin 28 | RB7 — Bidirectional I/O / ICSP programming data |
| Pin 29 | RC0 — Bidirectional I/O |
| Pin 30 | RC1 — Bidirectional I/O |
| Pin 31 | RC2 — Bidirectional I/O |
| Pin 32 | RC3 — Bidirectional I/O |
| Pin 33 | RC4 — Bidirectional I/O |
| Pin 34 | RC5 — Bidirectional I/O |
| Pin 35 | RC6 — Bidirectional I/O |
| Pin 36 | RC7 — Bidirectional I/O |
| Pin 37 | RC8 — Bidirectional I/O |
| Pin 38 | RC9 — Bidirectional I/O |
| Pin 39 | RC10 — Bidirectional I/O |
| Pin 40 | RC11 — Bidirectional I/O |
| Pin 41 | RC12 — Bidirectional I/O |
| Pin 42 | RC13 — Bidirectional I/O |
| Pin 43 | VSS — Ground reference |
| Pin 44 | RD0 — Bidirectional I/O |
| Pin 45 | RD1 — Bidirectional I/O |
| Pin 46 | RD2 — Bidirectional I/O |
| Pin 47 | MCLR — Master clear / reset input (active low) |
| Pin 48 | VDD — Positive power supply (1.8V-3.6V) |
Typical Applications
PIC16LF19185T-I/PT is suitable for 7 applications: mTouch Capacitive Touch HMI, Battery-Powered IoT Sensor Nodes, Small Home Appliance Control, LED Lighting Controllers, Industrial Sensor Interfaces, Wearable Health Devices, Automotive Body & Comfort Modules.
mTouch Capacitive Touch HMI
The PIC16LF19185T-I/PT is purpose-built for capacitive touch human-machine interfaces thanks to its integrated 12-bit ADC with hardware Capacitive Voltage Divider (CVD) and peripheral pin select. The CVD engine scans up to 43 I/O as touch channels with automatic baseline tracking, eliminating the host MCU's processing burden and supporting buttons, sliders, and proximity sensors. With 14 KB Flash you can implement complete touch firmware including debounce, gesture decoding, and LED feedback PWM in a single chip. The XLP architecture keeps deep-sleep current below 100 nA, so battery-powered remote controls and wall switches wake only on touch.
Recommended
Battery-Powered IoT Sensor Nodes
The PIC16LF19185T-I/PT operates from 1.8V to 3.6V directly from a single lithium cell or two AA batteries, making it ideal for wireless sensor endpoints using sub-GHz radios or BLE modules. Its XLP architecture delivers deep-sleep currents below 100 nA with full RAM retention, while active current stays in the microamp-per-MIPS range at 32 MHz, so duty-cycled sensors achieve multi-year battery life. The 12-bit ADC with internal voltage reference provides accurate readings of temperature, humidity, and gas-sensor analog outputs without external precision references. PPS lets the same chip drive SPI to a LoRa/BLE module and UART to a debug console without remapping pins.
Recommended
Small Home Appliance Control
Coffee makers, blenders, air purifiers, and induction-cooktop user interfaces benefit from the PIC16LF19185T-I/PT's mix of 12-bit ADC for temperature sensing, PWM with complementary outputs for motor/valve drive, and capacitive touch for glass-front panels. The 43 I/O easily accommodates multiple indicator LEDs, buzzer drivers, triac firing circuits, and rotary encoder inputs without external I/O expanders. Built-in 5-bit and 8-bit DACs generate offset voltages for sensor conditioning and reference levels for LCD bias. The XLP sleep profile keeps standby power below regulatory limits for energy-star appliances.
Recommended
LED Lighting Controllers
The PIC16LF19185T-I/PT's multiple PWM modules with complementary outputs drive RGB or warm-white LED channels at frequencies high enough to avoid flicker in video, while its 12-bit ADC reads ambient light sensors and potentiometers for closed-loop dimming. The 5/8-bit on-chip DACs generate analog references for constant-current LED driver ICs and provide smooth dimming curves below the PWM resolution floor. With peripheral pin select, PWM channels map to any GPIO, simplifying PCB routing of multi-channel RGBW fixtures. Deep-sleep below 100 nA makes the part ideal for always-listening smart-bulb controllers.
Recommended
Industrial Sensor Interfaces
Factory-floor 4-20 mA loop sensors, thermocouples, and bridge-type pressure transducers pair well with the PIC16LF19185T-I/PT's 12-bit ADC, on-chip DAC, and LIN/UART interfaces for legacy industrial networks. The industrial temperature range (-40 C to +85 C) and robust ESD performance support cabinet-mounted designs next to motor drives and solenoids. The 14 KB Flash fits LIN protocol stacks plus calibration tables for sensor linearization in a single MCU. PPS lets the engineer route I2C to an external EEPROM and SPI to a digital front-end without pin reassignment headaches.
Recommended
Wearable Health Devices
Fitness bands, smart watches, and disposable medical patches benefit from the PIC16LF19185T-I/PT's XLP architecture delivering multi-year coin-cell life with sub-100 nA sleep current and efficient active mode at 32 MHz. The 12-bit ADC with PGA reads PPG (photoplethysmography) photodiode outputs, while on-chip DACs bias the LED driver for SpO2 measurement. PPS remapping allows a compact PCB layout where SPI to a BLE SoC, I2C to an accelerometer, and AFE channels share the limited 43-pin budget. The 1.8V-3.6V range matches single lithium coin cells without boost converters.
Recommended
Automotive Body & Comfort Modules
The PIC16LF19185T-I/PT suits non-safety automotive body controllers such as interior lighting, mirror adjustment, and seat-position memory where LIN bus connectivity and PWM motor drive are needed. Its 43 I/O control multiple LED channels via PWM, read seat-position potentiometers with the 12-bit ADC, and communicate over LIN to the body controller. The I-temp rating (-40 C to +85 C) covers cabin-mounted modules; underhood designs require AEC-Q100 qualified parts. For safety-critical ECUs, designers should evaluate dsPIC33EP or PIC18 K-series parts with full automotive certification.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF19185T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF19185-I/PT | PIC16LF19186T-I/PT | PIC16LF19176T-I/PT | PIC16LF18877-I/PT | PIC16LF18876-I/PT |
|---|---|---|---|---|---|---|
| Package | 48-TQFP (PT) 7x7 mm | 48-TQFP (PT) 7x7 mm - same | 48-TQFP (PT) 7x7 mm - same | 48-TQFP (PT) 7x7 mm - same | 48-TQFP (PT) 7x7 mm - same | 48-TQFP (PT) 7x7 mm - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 14 KB | 14 KB | 28 KB | 28 KB | 56 KB | 56 KB |
| RAM | 1 KB | 1 KB | 2 KB | 2 KB | 8 KB | 8 KB |
| I/O Pins | 43 | 43 | 43 | 36 | 49 | 49 |
| ADC | 12-bit with CVD touch | 12-bit with CVD touch | 12-bit with CVD touch | 12-bit with CVD touch | 10-bit | 10-bit |
| CPU Speed | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) |
| Operating Voltage | 1.8 V to 3.6 V (XLP) | 1.8 V to 3.6 V (XLP) | 1.8 V to 3.6 V (XLP) | 1.8 V to 3.6 V (XLP) | 1.8 V to 3.6 V (XLP) | 1.8 V to 3.6 V (XLP) |
| Peripheral Pin Select (PPS) | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Highest I/O count in the PIC16LF191xx 48-TQFP family (vs PIC16LF19176T-I/PT)
- Twice the memory headroom via drop-in 28 KB Flash upgrade (vs PIC16LF19186T-I/PT)
- 12-bit ADC with CVD touch sensing vs 10-bit ADC in older families (vs PIC16LF18877-I/PT)
Design Notes
Place a 100 nF decoupling capacitor within 3 mm of each VDD pin (pin 18 and pin 48) and a 10 uF bulk capacitor on the main VDD rail. AVDD (pin 19) should have its own 100 nF + 10 uF decoupling network and must be tied to VDD for proper ADC reference operation per the Microchip datasheet. AVSS (pin 20) connects to the same ground plane as VSS (pin 9, pin 43) with a single-point star connection under the part. For lowest sleep current, configure all unused I/O as outputs low and disable unused peripherals via PMD registers before entering SLEEP mode.
The PIC16LF19185T-I/PT in 48-TQFP has a typical theta_JA of approximately 50 C/W on a standard JEDEC 2S2P test board, which is more than adequate for the device's low active currents (a few mA at 32 MHz). Estimated: at 32 MHz active with all peripherals on, total IDD rarely exceeds 10 mA, yielding well under 0.1 W dissipation - thermal management is generally not a concern at industrial temperatures. For sealed enclosures, ensure the board copper area on VDD/ground pours provides at least 100 mm^2 of thermal mass to limit self-heating during sustained ADC sampling.
Route the ICSP clock (RB6, pin 27) and data (RB7, pin 28) lines away from high-speed switching traces to avoid programming glitches in-circuit. Keep the MCLR line (pin 47) short and place the 10 kohm pull-up and any reset capacitor close to the pin; never leave MCLR floating. For PCB layout with capacitive touch, route the touch channels with adjacent ground shielding and avoid crossing noisy power traces, as the CVD hardware compares very small capacitance changes and is sensitive to coupled noise. Reserve a 4-layer stack-up if the design uses both analog and PWM signals on adjacent pins.
Do not confuse the LF (1.8V-3.6V) variant with the F (2.3V-5.5V) variant; the LF cannot operate from a regulated 5V rail and will be damaged by over-voltage on VDD. Avoid leaving the MCLR pin floating - it must have a pull-up to VDD or be driven by a supervisor to prevent spurious resets in noisy environments. The peripheral pin select (PPS) registers must be unlocked and re-locked after configuration; failing to follow the unlock sequence locks out the PPS module until the next reset per Microchip errata.
Compliance Information
Compliant with RoHS and REACH per Microchip product page. Not AEC-Q100 qualified - evaluate AEC-Q100 grade parts for automotive safety-critical applications. Lead-free and halogen-free packaging confirmed by Microchip Material Declaration.
