PIC16F1824T-I/ML - 8-bit MCU, 7KB Flash, 32MHz, 16-QFN | Microchip
MPN: PIC16F1824T-I/ML β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.35 | $2.35 |
| 10 | $2.1 | $21.00 |
| 100 | $1.78 | $178.00 |
| 500 | $1.52 | $760.00 |
| 1,000 | $1.28 | $1,280.00 |
PIC16F1824T-I/ML Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path. PIC (Peripheral Interface Controller) MCUs from Microchip use a RISC instruction set optimized for deterministic interrupt response, and they sit at the lowest-cost tier of the microcontroller hierarchy (8-bit -> microcontroller -> embedded IC -> semiconductor). XLP (eXtreme Low Power) is Microchip's branded low-power family; nanoWatt XLP further extends sleep-current performance into the tens-of-nA range, enabling coin-cell and energy-harvesting designs. mTouch is Microchip's on-chip capacitive-touch sensing peripheral, replacing mechanical buttons without external components.
The 7 KB (4K x 14) Flash uses a 14-bit instruction word and supports self-programming, allowing firmware updates in the field. On-chip peripherals include a 10-bit ADC with computation (ADC2), multiple PWM modules, Enhanced USART, MSSP (SPI/I2C), comparators, and a 32 kHz internal low-power oscillator that allows the 32 MHz HF oscillator to be switched off in sleep. The mTouch block enables up to 12 touch channels directly on the GPIO pads without an external touch IC.
Architecturally, the PIC16F1824T-I/ML uses a modified Harvard core with separate program and data buses, giving it deterministic 1-cycle instruction execution except for branches. The part supports configurable logic cells (CLC), numerically controlled oscillator (NCO), and zero-cross detection, allowing analog-style timing functions in pure digital logic. CLC-configurable peripherals reduce external component count in motor-control, lighting, and consumer appliance designs.
Typical applications include consumer remote controls, battery-powered sensor nodes, IoT edge devices, capacitive-touch user interfaces, white goods and small appliances, and low-cost motor-control fan or pump drives. The 16-QFN (4x4 mm) package suits space-constrained handheld products such as wearables, BLE beacons, and USB-C accessories.
When designing with this part, observe the recommended 4-layer PCB layout for the QFN thermal pad and provide a low-impedance ground pour beneath the exposed pad. Decouple VDD with a 100 nF ceramic capacitor placed within 3 mm of the pin, and bulk-decouple with 1 uF to 10 uF on the same rail. The ICD 3 / PICkit 3 debug interface uses the ICSPCLK/ICSPDAT pins, so leave test pads or header access during layout to avoid rework later.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16F1824T-I/ML β 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 PIC16F1824T-I/ML (same form factor and footprint) β differing in ADC, Internal Oscillator, Maximum CPU Speed, Package, Low-Power Technology.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16F1824T-I/JQ
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$0.81 / Unit
View Datasheet βPIC16F1824-I/ML
β Drop-Inπ Reference alternative (not in catalog)
PIC16F1823T-I/ML
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
PIC16F1825T-I/ML
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$1.12 / Unit
View Datasheet βPIC16F1824T-I/MLVAO
β Drop-Inπ Reference alternative (not in catalog)
PIC16F1824T-I/ML Maximum Ratings & Electrical Characteristics
| Core | 8-bit PIC16 RISC (modified Harvard) |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data RAM | 256 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz (32 MIPS) |
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
| Operating Temperature Range | -40 C to +85 C (Industrial, "I") |
| I/O Pins | 12 |
| Package | 16-QFN (4x4 mm) with exposed thermal pad |
| Internal Oscillator | 32 MHz HF + 31 kHz LF |
| ADC | 10-bit, up to 11 channels, with ADC2 computation |
| PWM Outputs | Up to 4 10-bit PWM |
| Communication | Enhanced USART, MSSP (SPI / I2C) |
| Capacitive Touch | mTouch (up to 12 channels) |
| Low-Power Technology | nanoWatt XLP (sleep current in tens of nA) |
| Other Peripherals | CLC, NCO, comparators, EUSART, zero-cross detect |
| Programming / Debug | ICSP via PICkit 3 / MPLAB ICD 3; optional trace header |
| Mounting Type | Surface Mount |
| MSL Level | MSL1 (per Microchip 16-QFN profile) |
| RoHS Status | Compliant |
PIC16F1824T-I/ML Pin Configuration
| Pin 1 | RA5 β GPIO / ICSPDAT / mTouch |
| Pin 2 | RA4 β GPIO / mTouch |
| Pin 3 | RA3 β GPIO / MCLR#/VPP |
| Pin 4 | RA2 β GPIO / mTouch |
| Pin 5 | RA1 β GPIO / ICSPCLK / mTouch |
| Pin 6 | RA0 β GPIO / mTouch |
| Pin 7 | VSS β Ground |
| Pin 8 | RA7 β GPIO / mTouch |
| Pin 9 | RA6 β GPIO / mTouch |
| Pin 10 | RC0 β GPIO / mTouch |
| Pin 11 | RC1 β GPIO / mTouch |
| Pin 12 | RC2 β GPIO / mTouch |
| Pin 13 | RC3 β GPIO / mTouch |
| Pin 14 | RC4 β GPIO / mTouch |
| Pin 15 | VDD β Positive supply (2.3 V to 5.5 V) |
| Pin 16 | VCAP β Core regulator bypass capacitor (connect 1uF to GND) |
Typical Applications
PIC16F1824T-I/ML is suitable for 6 applications: Consumer Remote Control, Battery-Powered IoT Sensor Node, Capacitive-Touch User Interface, Small Appliance and White Goods Control, USB-C Accessory and Wearable Device, Low-Cost BLDC Fan or Pump Drive.
Consumer Remote Control
The PIC16F1824T-I/ML fits IR/RF remote-control designs because its nanoWatt XLP sleep current of roughly 50 nA extends coin-cell life to multiple years while the integrated mTouch block lets designers replace mechanical keys with capacitive touch pads. The 32 MHz internal oscillator eliminates the external resonator that traditional remotes use, and the 16-QFN (4x4) package keeps the PCB small enough for a slim handset. Compared to a discrete 8-bit solution, this single-chip part reduces BOM by removing the reset supervisor, crystal and external touch IC. AES-ready EUSART and MSSP peripherals support RF transmitter ICs (CC1101, Si4010) without extra glue logic.
Recommended
Battery-Powered IoT Sensor Node
For wireless sensor nodes, the PIC16F1824T-I/ML's 2.3V to 5.5V supply range lets it run directly from a CR2032 or 2xAA cells without a boost converter. The 10-bit ADC with ADC2 computation handles averaged sensor readings in hardware, freeing the CPU for sleep, while 256 bytes of RAM are sufficient for periodic temperature/humidity/light samples buffered to a 256-byte EEPROM log. mTouch capability allows tamper detection on the enclosure without a separate button IC. The 32 MHz core can wake, sample, encrypt and return to sleep within milliseconds, achieving years of battery life on a 240 mAh coin cell.
Recommended
Capacitive-Touch User Interface
The PIC16F1824T-I/ML drives up to 12 mTouch capacitive-touch channels directly on its GPIO pins, so a coffee machine, microwave or smart-lighting panel needs no external touch controller. The 16-QFN (4x4 mm) footprint fits behind the front bezel, leaving the touch pads as exposed copper. Programmable CLC cells implement proximity wake-up logic in hardware without burning CPU cycles, and the EUSART can drive an LED-status serial link to a parent MCU. Designers can implement sliders, wheels and matrix buttons by routing I/O to PCB pads and tuning the mTouch configuration registers.
Recommended
Small Appliance and White Goods Control
In coffee makers, blenders and toaster ovens, the PIC16F1824T-I/ML's 32 MIPS throughput is enough for closed-loop temperature control with zero-cross triac dimming. The comparators and zero-cross detect peripheral synchronize the triac firing directly, while the NCO generates precise timing for brushless-DC fan speed control. With 7 KB Flash, full proportional-integral control code, lookup tables, and a UI fit in a single chip, eliminating the need for a separate DSP or coprocessor. The 4x4 mm QFN survives high-vibration kitchen environments when paired with underfilled or conformal-coated PCB assembly.
Recommended
USB-C Accessory and Wearable Device
Wearables such as fitness bands, BLE beacons and USB-C dongles benefit from the PIC16F1824T-I/ML's tiny 4x4 mm QFN-16 footprint, low 50 nA sleep current, and ability to run directly from a 3.7 V Li-ion cell. The MSSP peripheral drives I2C sensors (accelerometer, heart-rate, temperature) without extra logic, and the EUSART pairs with a BLE module (RN4870, nRF51) for wireless links. ADC2 hardware averaging reduces firmware overhead on low-rate biosignals, while the mTouch peripheral supports a single-button capacitive UI on the wearable housing. Brown-out detect and watchdog timer improve reliability under battery brownouts.
Recommended
Low-Cost BLDC Fan or Pump Drive
The PIC16F1824T-I/ML is a fit for small brushless-DC fan and pump controllers where its 4 PWM outputs, zero-cross detect and CLC peripherals implement trapezoidal commutation in hardware. 32 MIPS of CPU throughput handles back-EMF zero-cross detection with sub-microsecond resolution, while 7 KB of Flash accommodates sensorless startup and PI speed-loop code. Operating from 2.3V to 5.5V, the MCU can run directly from a 5 V or 12 V (with LDO) supply rail. The 16-QFN-EP thermal pad helps dissipate the small amount of self-heating in this always-on control role.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1824T-I/ML β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1824T-I/JQ | PIC16F1824-I/ML | PIC16F1823T-I/ML | PIC16F1825T-I/ML | PIC16F1824T-I/MLVAO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 16-QFN (4x4) | 16-QFN (4x4) - same | 16-QFN (4x4) - same | 16-QFN (4x4) - same | 16-QFN (4x4) - same | 16-QFN (4x4) - same |
| Flash Program Memory | 7 KB (4K x 14) | 7 KB | 7 KB | 4 KB | 14 KB | 7 KB |
| Maximum CPU Speed | 32 MHz (32 MIPS) | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 12 |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C (Automotive) |
| mTouch Channels | Up to 12 | 12 | 12 | 12 | 12 | 12 |
| AEC-Q100 Qualified | No | No | No | No | No | Yes (VAO suffix) |
| Delivery Form | Tape & Reel (3000) | Tape & Reel | Tube | Tape & Reel | Tape & Reel | Tape & Reel |
Key Differentiators
- Industry-leading 50 nA nanoWatt XLP sleep current (vs PIC16F1823T-I/ML)
- Pin-compatible Flash upgrade path within the same QFN-16 (vs PIC16F1825T-I/ML)
- AEC-Q100 grade variant available in identical footprint (vs PIC16F1824T-I/MLVAO)
Design Notes
Decouple VDD (pin 15) with a 100 nF X7R ceramic placed within 3 mm of the pad, and add a 1 uF to 10 uF bulk cap on the same rail. The VCAP pin (pin 16) requires a 1 uF X7R cap to VSS to stabilize the internal 3.6 V core regulator; omitting VCAP causes erratic behaviour or programming failures. For battery-powered designs, the regulated 3.6 V core remains active even in Sleep mode, drawing under 50 nA, so the VCAP cap does not need to support load transients above a few hundred nA.
The 16-QFN exposed thermal pad (EP) is the primary heat-dissipation path. Stencil-print and reflow-solder the EP directly to a copper ground pour with at least 10 thermal vias (0.3 mm drill, 1.0 mm pitch) to the inner GND plane. Without EP soldering, theta_JA rises above 150 C/W, which is acceptable for nanoWatt sleep duty but problematic at sustained 32 MIPS CPU loads in enclosed housings.
Route mTouch copper pads with a minimum 0.5 mm clearance to ground pour to prevent false touches, and surround the touch electrodes with a hatched (not solid) guard trace tied to a quiet analog ground. Place the ICSP test points (ICSPCLK on RA1, ICSPDAT on RA5) on the PCB edge so PICkit 3 / ICD 4 can attach without removing the device from the board. Per Microchip's mTouch design guide, route touch traces on the opposite side of any switching power-supply plane to avoid coupled noise.
MCLR#/VPP (RA3) must never be left floating - tie it to VDD through a 10 kohm pull-up, optionally with a 100 nF cap to ground for noise filtering, or the MCU will randomly reset. If MCLR is driven low for in-circuit programming, ensure the in-system programmer can overcome the pull-up. Another common pitfall is leaving the LVP (low-voltage programming) bit enabled in CONFIG words; this pins RA0/RA1 as I/O only when no LVP programmer is connected, but can cause contention if RA0/RA1 are also used as mTouch or analog inputs in production firmware.
Compliance Information
RoHS / REACH compliance per Microchip product page; the industrial ("I") variant is not AEC-Q100 - use /VAO suffix for automotive. Halogen-free per Microchip declaration.
