PIC16F1824-E/SL - 8-bit 32MHz 7KB Flash MCU 14-SOIC | Microchip
MPN: PIC16F1824-E/SL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.68 | $1.68 |
| 10 | $1.51 | $15.10 |
| 100 | $1.34 | $134.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $1.04 | $1,040.00 |
PIC16F1824-E/SL Overview
An 8-bit microcontroller (MCU) is a single-chip computer that combines a CPU, non-volatile program memory (Flash), volatile data memory (RAM), and a configurable peripheral set onto one silicon die. 8-bit MCUs sit within the broader hierarchy: microcontroller -> embedded processor -> semiconductor. The PIC16F1824 belongs to the nanoWatt XLP (eXtreme Low Power) family, which targets battery-powered and energy-harvesting applications with sleep currents in the sub-microamp range, making it a popular choice where cost, deterministic behavior, and ultra-low standby power matter more than raw throughput.
Key features of the PIC16F1824-E/SL include an enhanced mid-range 8-bit CPU core with 49 instructions, 16-level hardware stack with overflow/underflow reset, automatic interrupt context saving, on-chip 32MHz oscillator (8MHz internal RC with 4x PLL), 4x 10-bit ADC with computation, two comparators, PWM modules, an MSSP (I2C/SPI) interface, and an Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART). The integrated mTouch capacitive-touch peripheral supports buttons, sliders, and proximity sensors without external touch ICs. The Extended temperature grade makes this variant suitable for industrial and automotive under-hood environments.
Architecturally, the device uses a Harvard RISC core with separate program and data buses, allowing simultaneous instruction fetch and operand read. The 14-bit wide instruction word provides a compact 7KB code density. The integrated 32MHz oscillator eliminates an external crystal in many designs, reducing BOM cost. The XLP technology combines multiple low-power modes (Sleep, Doze, Idle, and Peripheral Module Disable) to achieve quiescent currents below 50 nA in real applications.
Typical applications include capacitive-touch user interfaces for appliances and consumer electronics, sensor nodes in IoT battery-powered systems, LED lighting controllers, low-end motor control for small DC fans and pumps, and general-purpose logic replacement where deterministic 8-bit control and long battery life outweigh the need for ARM-class performance. The 14-SOIC package and 5V tolerance make it easy to retrofit into 5V legacy designs or breadboard prototypes.
When designing with this MCU, ensure decoupling is placed within 5mm of the VDD pin (per datasheet recommendations), keep the MCLR pull-up to VDD through a 10k resistor if programming/debugging is required, and leverage the Peripheral Pin Select feature to route digital peripherals to any available I/O. For low-power operation, switch unused peripherals off via PMD registers and use Sleep mode between wake events.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical low-power design considerations not collected in the manufacturer datasheet alone.
Drop-in alternatives for PIC16F1824-E/SL — 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-E/SL (same form factor and footprint) — differing in ADC, Package, Operating Temperature, Communication, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1824-I/SL
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16F1824T-E/SL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1825-I/SL
✅ Drop-In✓ In Stock
$0.84 / Unit
View Datasheet →PIC16F1823-I/SL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1764-E/SL
✅ Drop-In✓ In Stock
$1.36 / Unit
View Datasheet →PIC16F1704-I/SL
✅ Drop-In✓ In Stock
$0.97 / Unit
View Datasheet →PIC16F1824-E/SL Maximum Ratings & Electrical Characteristics
| Core Architecture | Enhanced Mid-Range 8-bit PIC RISC |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data RAM | 256 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz (8 MHz internal + 4x PLL) |
| Instruction Set | 49 instructions (14-bit wide) |
| Supply Voltage (VDD) | 2.5 V to 5.5 V |
| I/O Pins | 12 |
| Operating Temperature | -40 C to +125 C (Extended) |
| ADC | 4-channel 10-bit with computation |
| Comparators | 2 |
| PWM Outputs | Up to 4 (10-bit) |
| Communication | 1x MSSP (I2C/SPI), 1x EUSART |
| Capacitive Touch | mTouch peripheral (CTMU + ADC) |
| Timers | Timer0, Timer1, Timer2 |
| Package | 14-SOIC (0.154 inch, 3.90mm body) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Debug Support | In-circuit via PICkit 3 / MPLAB ICD 3 |
PIC16F1824-E/SL Pin Configuration
| Pin 1 | VDD — Positive supply voltage (2.5V to 5.5V) |
| Pin 2 | RA5 — Digital I/O / analog input / DAC output |
| Pin 3 | RA4 — Digital I/O / analog input |
| Pin 4 | RA3/MCLR — Digital I/O / Master Clear (reset) input |
| Pin 5 | RC5 — Digital I/O / analog input |
| Pin 6 | RC4 — Digital I/O / analog input |
| Pin 7 | RC3 — Digital I/O / analog input / SCL (MSSP) |
| Pin 8 | RC2 — Digital I/O / analog input / SDA (MSSP) |
| Pin 9 | RC1 — Digital I/O / analog input / CCP2 |
| Pin 10 | RC0 — Digital I/O / analog input / CCP1 |
| Pin 11 | RA2 — Digital I/O / analog input / CTMU |
| Pin 12 | RA1 — Digital I/O / analog input / CTMU / ICSPCLK |
| Pin 13 | RA0 — Digital I/O / analog input / ICSPDAT |
| Pin 14 | VSS — Ground reference |
Typical Applications
PIC16F1824-E/SL is suitable for 7 applications: Capacitive Touch User Interface, Battery-Powered IoT Sensor Node, LED Lighting Controller, Small DC Motor and Fan Control, 5V Industrial Logic Replacement, Automotive Under-Hood Sensor Module, Consumer Appliance Control Board.
Capacitive Touch User Interface
The PIC16F1824-E/SL is purpose-built for capacitive touch interfaces thanks to its integrated mTouch (CTMU + ADC) peripheral and nanoWatt XLP low-power technology. Its 4-channel 10-bit ADC with computation can scan up to 12 touch electrodes via the Peripheral Pin Select (PPS) feature, enabling touch buttons, sliders, and proximity sensors without external touch ICs. The extended -40C to +125C temperature grade is critical for appliances and industrial panels operating in harsh environments where competitor touch MCUs would derate or fail. Typical BOM includes the MCU, a 100nF decoupling cap, optional 10k MCLR pull-up, and the touch sensor copper pattern on PCB; the 7KB Flash is sufficient for buttons-plus-gesture firmware. Compared to an external touch controller solution, the integrated approach saves $0.30-$0.80 BOM and 30-50mm² PCB area. Pair with the MCP1700 LDO for stable touch sensing across battery voltage drops.
Recommended
Battery-Powered IoT Sensor Node
The PIC16F1824-E/SL excels in battery-powered IoT sensor nodes where its nanoWatt XLP technology delivers typical sleep currents below 50 nA, enabling multi-year battery life on a single CR2032 coin cell. The 32MHz enhanced mid-range core provides enough MIPS for basic sensor sampling and BLE command handling via the EUSART when paired with an external RN4870 BLE module. The 256B EEPROM allows non-volatile storage of calibration data, sensor baselines, and network IDs without an external memory IC. The 12 I/O pins support I2C sensors (via MSSP), analog sensors (via 10-bit ADC), and interrupt-driven wake sources. Compared to 32-bit ARM Cortex-M0+ MCUs, the PIC16F1824-E/SL offers 30-40% lower sleep current at slightly higher active-mode consumption, but at half the unit cost. Estimated: with 1 sample per minute and 10ms active time, average current draw on a CR2032 (~220mAh) yields 3-5 years of operation. Recommended companion: MCP1640 boost regulator for 1.5V cell-to-3.3V conversion.
Recommended
LED Lighting Controller
The PIC16F1824-E/SL is a strong fit for LED lighting controllers where its 4 PWM channels with 10-bit resolution can dim multiple LED strings independently, while its 5V tolerance simplifies interface with legacy 5V analog dimmers and 0-10V control inputs. The 7KB Flash stores multiple lighting modes, dimming curves, and temperature compensation tables, while the 256B EEPROM retains last-state across power cycles. The integrated 32MHz oscillator eliminates the external crystal needed by many LED controllers, reducing BOM and assembly cost. The extended -40C to +125C temperature grade allows placement inside enclosed luminaires where ambient temperatures can exceed 85C. Compared to analog LED driver ICs, the PIC16F1824-E/SL adds programmability, remote control via EUSART, and color-mixing algorithms for RGBW fixtures at modest incremental cost. Typical 3-channel RGBW fixture requires only 3 PWM outputs, leaving 9 I/O for buttons, IR receivers, or ambient light sensing.
Recommended
Small DC Motor and Fan Control
The PIC16F1824-E/SL handles small DC motor and fan control loops by combining its 32MHz core for PID computation, 4 PWM outputs for H-bridge or single-FET drive, and the 10-bit ADC for tachometer/feedback sensing. The 7KB Flash fits a complete PID loop with soft-start, stall detection, and PWM frequency dithering for EMI reduction. The nanoWatt XLP modes let the MCU enter Sleep between control cycles, reducing average current draw in low-duty-cycle applications like HVAC dampers or vent fans. The extended temperature grade supports under-hood automotive fan applications. Compared to dedicated motor-controller ASICs, the PIC16F1824-E/SL allows custom control algorithms and adaptive features, while delivering 32MHz headroom for sensor-fusion BLDC commutation. Pair with an MCP1755 LDO for motor supply isolation from MCU logic supply.
Recommended
5V Industrial Logic Replacement
The PIC16F1824-E/SL is frequently deployed as a programmable replacement for legacy 5V CMOS/TTL glue logic, leveraging its 5V-tolerant I/O and 12 GPIO to consolidate multiple 74HC-series gates into a single MCU. With 7KB Flash, engineers can implement state machines, timing sequences, encoder decoding, and protocol translation in software rather than hardware, reducing PCB complexity and rework cost. The 32MHz instruction rate delivers deterministic 125ns cycle time, suitable for high-speed logic-level signal generation and debounce-free inputs. The extended temperature grade allows deployment in factory automation panels where ambient temperatures routinely exceed 85C. Compared to discrete 74HC logic, the PIC16F1824-E/SL replaces 3-8 logic ICs at $1.68 unit cost, yielding BOM savings of $1-3 per board while adding programmability. Use the EUSART for industrial RS-485 communication via external transceiver.
Recommended
Automotive Under-Hood Sensor Module
The PIC16F1824-E/SL is AEC-Q100-friendly and qualified for automotive under-hood sensor modules thanks to its -40C to +125C extended temperature grade, 5V tolerance for 12V battery transients (with external TVS), and integrated mTouch plus ADC peripherals for sensor conditioning. The 7KB Flash stores calibration curves for temperature/pressure sensors, and the 256B EEPROM retains trim data across battery disconnects. The MSSP port supports SPI communication with external sensors or display drivers, while EUSART enables LIN-bus protocol stacks via external LIN transceiver. Compared to bare ASIC sensor interfaces, the PIC16F1824-E/SL adds diagnostics, fault logging, and field-updatable firmware via bootloader, at incremental cost. Use automotive-grade MCP1755 LDO for supply regulation. Estimated: at 8MHz CPU and 1ms active duty, sleep current dominates and module quiescent draw is sub-100uA on 12V battery.
Recommended
Consumer Appliance Control Board
The PIC16F1824-E/SL is a cost-optimized solution for consumer appliance control boards (coffee machines, blenders, air purifiers, washing machine UI) thanks to its 7KB Flash, integrated mTouch buttons, 4 PWM outputs for pump/motor/valve control, and EUSART/MSSP for display or connectivity daughter-boards. The 14-SOIC package is easy to hand-solder and rework in low-volume production, important for appliance manufacturers with limited SMT lines. The nanoWatt XLP modes reduce standby power below 100uA, helping appliances meet ENERGY STAR and EU Ecodesign standby requirements. Compared to timer-based electromechanical controls, the PIC16F1824-E/SL adds programmability for IoT connectivity, smartphone app control, and energy metering. Pair with MCP1700 LDO for AC-DC-derived 5V supply.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1824-E/SL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1824-I/SL | PIC16F1825-I/SL | PIC16F1823-I/SL | PIC16F1764-E/SL | PIC16F1704-I/SL |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 14-SOIC | 14-SOIC - same | 14-SOIC - same | 14-SOIC - same | 14-SOIC - same | 14-SOIC - same |
| Flash Memory | 7 KB | 7 KB | 8 KB | 2 KB | 7 KB | 7 KB |
| RAM | 256 B | 256 B | 1 KB | 128 B | 512 B | 512 B |
| Maximum Clock Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Temperature | -40C to +125C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C | -40C to +85C |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 12 |
| Capacitive Touch (mTouch) | Yes | Yes | Yes | Yes | Yes (improved) | Yes |
| Supply Voltage Range | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V |
| Approx Unit Price (USD) | $1.68 (qty 1) | $1.50 | $1.80 | $1.30 | $1.85 | $1.60 |
Key Differentiators
- Wider Extended temperature range than Industrial variant (vs PIC16F1824-I/SL)
- More Flash and RAM than smaller-memory variant (vs PIC16F1823-I/SL)
- mTouch capacitive touch peripheral integrated (vs PIC16F1764-E/SL)
Design Notes
Place a 100nF decoupling capacitor within 5mm of the VDD pin (pin 1) with a short trace to the VSS pin (pin 14). For noise-sensitive applications add a 10uF tantalum or ceramic bulk cap on the same supply rail. The nanoWatt XLP Sleep mode can reduce quiescent current below 50 nA, but only if all peripherals are switched off via PMD registers before Sleep - leaving the ADC or comparators enabled can raise sleep current to 1-3 uA. Estimated: at 3.3V supply with Sleep mode and all peripherals off, total quiescent draw is approximately 30-50 nA per the datasheet DC characteristics.
The PIC16F1824-E/SL in 14-SOIC package has theta_JA of approximately 100 C/W (SOIC natural convection). At maximum 32MHz operation the device draws about 3.3 mA at 5V (16.5 mW), so self-heating is negligible and no thermal management is required. However, in enclosed luminaires or industrial enclosures where ambient reaches 85C, verify the SOIC package solder joint reliability - lead-free SAC305 reflow profiles should not exceed 260C peak per JEDEC J-STD-020. Always verify final junction temperature stays within the -40C to +125C operating range.
Do not forget the MCLR pull-up resistor (typically 10k to VDD) if in-circuit programming/debugging is required; leaving MCLR floating can cause intermittent resets. The 32MHz internal oscillator needs the PLL enabled and the system clock postscaler set correctly in OSCCON - a common mistake is leaving the default 500kHz MFINTOSC active. When using mTouch, place a guard ring (ground trace) around touch sensors to prevent false triggering from adjacent signals. Finally, the 256B EEPROM has 100k write cycle endurance - use wear-leveling for frequently updated variables like real-time clocks.
Route the ICSP programming pins (RA0/ICSPDAT and RA1/ICSPCLK) to a programming header that is accessible without removing the MCU from the board. Keep analog signal traces short and away from PWM or digital switching lines to minimize ADC noise coupling; use a ground pour around analog sections. Place the 32.768 kHz crystal (if used for Timer1) close to the RA4/RA5 pins with short traces and a guard ground to reduce noise pickup. For mTouch designs, use a hatched ground plane with sensor keep-out zones per Microchip AN1478 application note guidelines.
Compliance Information
RoHS compliant per Microchip product page. The -E temperature grade supports automotive under-hood environments but is not AEC-Q100 qualified as standard - contact Microchip for automotive-qualified VAO variants. Halogen-free per JEDEC JS709 definitions.
