PIC16F1824-I/ML - 8-Bit 32MHz 7KB Flash MCU QFN-16 | Microchip
MPN: PIC16F1824-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.14 | $2.14 |
| 10 | $1.93 | $19.30 |
| 100 | $1.71 | $171.00 |
| 500 | $1.42 | $710.00 |
| 1,000 | $1.18 | $1,180.00 |
PIC16F1824-I/ML Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, RAM, and peripherals such as timers, ADC, and communication interfaces on a single die. PIC microcontrollers from Microchip use a RISC-based Harvard architecture with separate program and data memory paths, allowing instruction fetch and operand access to occur in the same clock cycle. The 'enhanced mid-range' 8-bit core executes one instruction per cycle (typically 200 ns at 20 MHz, or 125 ns at 32 MHz) and supports C-friendly programming via the MPLAB X IDE + XC8 compiler. Within the broader product hierarchy, the PIC16F1824 sits as a low-power general-purpose MCU: microcontroller -> embedded controller -> semiconductor -> integrated circuit.
Key features include 384 bytes of RAM, 256 bytes of EEPROM, mTouch capacitive touch sensing, two rail-to-rail I/O with selectable weak pull-ups, a DAC module, a comparator module with selectable references, and a low-power sleep current typically below 30 nA in RTCC mode. The internal 16 MHz and 32 MHz oscillators enable designs without an external crystal, while a software-tunable HFINTOSC trim register allows frequency fine-tuning for USB-friendly or asynchronous timing scenarios.
Architecturally, the PIC16F1824 uses a 14-bit instruction word optimized for code density, supporting 49 instructions with hardware multiply and indirect addressing. The device integrates a 4x PLL on HFINTOSC, allowing 8 MHz internal clock to be multiplied to 32 MHz for instruction throughput, which is the headroom behind the 32 MHz / 8 MIPS specification. The nanoWatt XLP technology provides multiple power-managed modes (Run, Idle, Sleep, and Deep Sleep with RTCC), giving designers granular control over active vs standby current.
Typical applications include mTouch capacitive touch buttons and sliders, low-power IoT sensor nodes with battery or energy harvesting supply, LED lighting controllers, small appliances, and consumer electronic remote controls. Industrial applications include 4-20 mA loop signal conditioning, HVAC sensor nodes, and USB-ICD-style debug peripherals. The wide 2.5 V to 5.5 V supply tolerance permits unregulated Li-ion battery or 5 V regulated rails.
When designing with the PIC16F1824-I/ML, ensure the QFN-16 exposed thermal paddle (EP) is soldered to a sufficiently large copper pour for mechanical reliability and thermal dissipation; the package has no gull-wing leads, so hand rework is not feasible. For programming/debug, use PICkit 3, MPLAB ICD 3, or the MPLAB Snap with the standard ICSP header pattern documented in the Microchip ICD specification.
This page synthesizes verified distributor pricing, parametric same-package drop-in alternatives from the Microchip PIC16F182x family, and practical PCB/thermal design notes not found in the manufacturer datasheet alone, helping procurement engineers and embedded designers evaluate the PIC16F1824-I/ML against other 8-bit MCU options in the same QFN-16 footprint.
Drop-in alternatives for PIC16F1824-I/ML — 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 PIC16F1824-I/ML (same form factor and footprint) — differing in Internal Oscillator, Package, ADC, Program Memory (Flash), Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1825-I/ML
✅ Drop-In✓ In Stock
$0.92 / Unit
View Datasheet →PIC16F1823-I/ML
✅ Drop-In✓ In Stock
$1.85 / Unit
View Datasheet →PIC16F1824-E/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1827-I/ML
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC16F1824-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC enhanced mid-range 8-bit RISC |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data RAM | 384 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Frequency | 32 MHz (8 MIPS) |
| Supply Voltage (VDD) | 2.5 V to 5.5 V |
| Operating Temperature (I grade) | -40C to +85C |
| I/O Pins | 12 |
| ADC | 10-bit, up to 11 channels |
| Timers | 2x 8-bit, 1x 16-bit |
| PWM / CCP Modules | Enhanced CCP, PWM output |
| Communication | EUSART, I2C, SPI |
| Internal Oscillator | 32 MHz HFINTOSC with 4x PLL, software trimmable |
| Capacitive Touch | mTouch support |
| Package | QFN-16 (4x4 mm, 0.90 mm), industrial temperature |
| Mounting Type | Surface Mount |
| MSL Level | 3 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
PIC16F1824-I/ML Pin Configuration
| Pin 1 | VDD — Positive supply voltage (2.5 V to 5.5 V) |
| Pin 2 | RA5 — GPIO / analog input / ICSP DAT |
| Pin 3 | RA4 — GPIO / analog input / ICSP CLK |
| Pin 4 | RA3/MCLR — GPIO / MCLR reset (active-low) |
| Pin 5 | RC5 — GPIO / PWM / CCP |
| Pin 6 | RC4 — GPIO / PWM / CCP |
| Pin 7 | RC3 — GPIO / analog input / SCL |
| Pin 8 | RC2 — GPIO / analog input / SDA |
| Pin 9 | RC1 — GPIO / analog input / CCP |
| Pin 10 | RC0 — GPIO / analog input |
| Pin 11 | RA2 — GPIO / analog input / DAC ref |
| Pin 12 | RA1 — GPIO / analog input / ICSP PGM |
| Pin 13 | RA0 — GPIO / analog input |
| Pin 14 | VSS — Ground |
| Pin 15 | RB7 — GPIO / analog input / EUSART RX |
| Pin 16 | RB6 — GPIO / analog input / EUSART TX |
Typical Applications
PIC16F1824-I/ML is suitable for 6 applications: mTouch Capacitive Touch Buttons and Sliders, Battery-Powered IoT Sensor Nodes, LED Lighting Controllers and Drivers, Small Appliance Control Boards, HVAC and Building Automation Sensor Nodes, USB-ICD Style Debug Peripherals and Programmers.
mTouch Capacitive Touch Buttons and Sliders
The PIC16F1824-I/ML's integrated mTouch capacitive sensing peripheral and 10-bit ADC with up to 11 channels make it a natural fit for capacitive touch button and slider interfaces in consumer and appliance products. Operating from 2.5 V to 5.5 V, the device can run directly from a single Li-ion cell or a regulated 3.3 V rail with no external level translation. Its nanoWatt XLP deep-sleep current below 30 nA allows battery-powered touch remotes and wall switches to idle for years while still waking instantly on touch. The QFN-16 (4x4 mm) package fits behind a typical 0.5 mm acrylic overlay on a compact PCB. Compared to a discrete capacitive touch solution using a timer IC plus op-amps, this integrated approach cuts BOM count, board area, and firmware complexity in a touch user interface.
Recommended
Battery-Powered IoT Sensor Nodes
The PIC16F1824-I/ML's nanoWatt XLP technology delivers typical deep-sleep currents below 30 nA with RTCC backup, making it ideal for wireless sensor nodes that spend most of their time dormant and wake periodically to sample and transmit. The 32 MHz / 8 MIPS throughput provides enough CPU bandwidth to handle sensor sampling, packet framing, and radio control duties in a single chip. With 2.5 V to 5.5 V supply tolerance, the device accepts single-cell Li-ion (3.0 V nominal) or 2x AA alkaline (3.0 V) battery packs directly without boost or buck conversion. Compared to a 32-bit Cortex-M0+ sensor MCU, the PIC16F1824 achieves comparable sleep current at lower cost and simpler toolchain (MPLAB X IDE + XC8) for 8-bit friendly C code.
Recommended
LED Lighting Controllers and Drivers
The PIC16F1824-I/ML is a strong match for low-power LED lighting controllers because it integrates enhanced PWM/SCCP modules capable of driving high-frequency PWM dimming with 10-bit resolution directly from the I/O pins. With 32 MHz CPU clock, the device can refresh multi-channel LED strings smoothly while servicing user input from buttons or rotary encoders. The wide 2.5 V to 5.5 V supply range supports both 3.3 V logic-level LEDs and 5 V regulated lighting bus architectures. The QFN-16 footprint allows the controller to fit inside small form-factor MR16-style bulbs or strip controllers. Compared to using a dedicated LED driver IC plus a separate MCU, this single-chip approach simplifies the BOM and allows firmware-driven effects such as breathing, color temperature shifting, and DALI/Casambi protocol emulation.
Recommended
Small Appliance Control Boards
The PIC16F1824-I/ML suits small appliance controllers in coffee machines, blenders, air purifiers, and similar consumer products because it integrates 12 GPIO, 10-bit ADC for temperature and humidity sensing, EUSART/I2C/SPI for displays and accessory modules, and enough PWM channels for motor or solenoid control. With 7 KB Flash and 384 bytes RAM, the firmware can implement user menus, sensor calibration, and safety shutdown logic. The -40C to +85C industrial temperature grade handles kitchen and laundry environments. Compared to a discrete logic + relay MCU design, this integrated PIC approach reduces BOM, simplifies PCB layout, and provides in-circuit reprogrammability for firmware updates and field tuning.
Recommended
HVAC and Building Automation Sensor Nodes
The PIC16F1824-I/ML is well suited for HVAC and building automation sensor nodes such as 4-20 mA loop signal conditioners, room temperature/humidity transmitters, and BACnet/Modbus RTU slave endpoints. Its 2.5 V to 5.5 V supply accommodates both 24 V loop-powered and 3.3 V regulated sensor node power architectures. The EUSART peripheral supports Modbus RTU over RS-485 transceivers, while I2C handles sensor front-ends like SHT30 or SCD30. The QFN-16 (4x4 mm) footprint fits inside standard European wall-box housings behind the front panel. Compared to a 32-bit Cortex-M0 alternative, the PIC16F1824 delivers comparable real-time interrupt response for Modbus timing at lower cost and simpler debug.
Recommended
USB-ICD Style Debug Peripherals and Programmers
The PIC16F1824-I/ML's EUSART, I2C, SPI, mTouch, and ADC peripherals plus the ICSP debug port make it a low-cost host for building custom USB-ICD style debug bridges, sensor emulators, and production line programmers. Its 32 MHz throughput handles USB-to-UART/ICSP bridging with margin, and the 7 KB Flash accommodates custom protocol stacks. The QFN-16 footprint allows the entire programmer to fit inside a USB Type-A dongle. Compared to using a larger PIC18 or PIC24, the PIC16F1824 provides just enough resources at the lowest cost for simple bridging tasks in production test fixtures.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1824-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1825-I/ML | PIC16F1823-I/ML | PIC16F1824-E/ML | PIC16F1827-I/ML |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | QFN-16 (ML) 4x4 mm | QFN-16 (ML) 4x4 mm - same | QFN-16 (ML) 4x4 mm - same | QFN-16 (ML) 4x4 mm - same | QFN-16 (ML) 4x4 mm - same |
| Flash Memory | 7 KB | 14 KB | 3.5 KB | 7 KB | 14 KB |
| RAM | 384 bytes | 1.5 KB | 128 bytes | 384 bytes | 1.5 KB |
| Max CPU Frequency | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) |
| Supply Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
| I/O Pins | 12 | 12 | 6 | 12 | 12 |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Extended -40C to +125C | Industrial -40C to +85C |
Key Differentiators
- Same-package Flash memory upgrade available within the PIC16F182x family (vs PIC16F1823-I/ML)
- Industrial temperature grade option for standard operating environments (vs PIC16F1824-E/ML)
- Enhanced mid-range core with 32 MHz / 8 MIPS throughput and nanoWatt XLP (vs PIC16F1827-I/ML)
Design Notes
The QFN-16 (ML) package has no gull-wing leads; the exposed thermal paddle (EP) on pin 17 must be soldered to a ground copper pour for both mechanical reliability and thermal dissipation. Use at least 4 thermal vias (0.3 mm drill, 0.5 mm pitch) under the EP connecting top and bottom ground planes. Hand rework is not recommended - use hot air or a rework station with proper preheating. Estimated: at 32 MHz active current ~5 mA, the EP thermal path keeps junction rise below 15C above ambient with the recommended footprint.
Place a 100 nF ceramic decoupling capacitor as close as possible to the VDD pin (pin 1) and a bulk capacitor (e.g., 4.7 uF) on the same supply trace. The nanoWatt XLP deep-sleep mode can drop current below 30 nA with RTCC, but supply noise during wake transitions can cause spurious resets if bulk decoupling is inadequate. Use a ferrite bead or small resistor on the VDD trace if the board shares a noisy switching regulator rail with the MCU.
Do not leave the MCLR/RA3 pin floating when used as a reset input - it must be pulled high to VDD through a 10 kOhm resistor with a 100 nF capacitor for noise filtering. When configured as digital GPIO (RA3 input only), MCLR must be disabled via the CONFIG register, otherwise the pin is locked as a reset. According to Microchip datasheet 41419A, programming the WDTEN bit unintentionally can lock up the device if firmware does not clear the WDT regularly - leave WDTEN off until firmware is verified.
Route the ICSP pins (RA0/RA1/RA4/RA5) to a 6-pin header pattern with VPP on RA3/MCLR, PGD on RA0, PGC on RA1, and VDD/VSS on adjacent pins. This standard ICD layout works with PICkit 3, MPLAB ICD 3, MPLAB Snap, and most third-party programmers. Keep the ICSP traces short (< 50 mm) and avoid routing them near switching regulator or motor drive traces to prevent programming noise.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - choose PIC16F1824-E/ML or PIC16F1827 family for extended temperature automotive-adjacent designs.
