PIC16F15224-I/ST - 8-bit MCU 7KB Flash 32MHz TSSOP-14 | Microchip
MPN: PIC16F15224-I/ST ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.21 | $12.10 |
| 100 | $0.98 | $98.00 |
| 500 | $0.84 | $420.00 |
| 1,000 | $0.72 | $720.00 |
PIC16F15224-I/ST Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path that combines a CPU, RAM, Flash program memory, and peripherals on one die. Within the embedded system hierarchy, an MCU sits above discrete logic but below more capable 32-bit microprocessors; it is the workhorse of cost-sensitive sensor and real-time control applications where deterministic behavior, low power, and small package size matter more than raw compute. The PIC16F15224 belongs to Microchip's PIC16F152xx family, an enhanced mid-range core featuring 49 instructions, 16 stack levels, and Core Independent Peripherals (CIPs).
Key features include eXtreme Low-Power (XLP) Sleep mode for battery-powered designs, Peripheral Pin Select (PPS) for flexible pin routing, an HLT (Hardware Limit Timer) peripheral, and on-chip debugging support. The Flash memory supports self read/write capability, enabling field firmware updates. The 32 MHz internal oscillator eliminates the need for an external crystal in most designs, reducing BOM cost and PCB footprint.
Typical applications include IoT sensor nodes, white goods and appliance control, low-cost motor control, LED lighting drivers, and battery-powered portable devices. The wide 2.5V-5.5V supply range supports direct connection to single-cell Li-ion, two-cell AA, or 3.3V/5V regulated rails. The 14-pin TSSOP footprint balances I/O count with compact board area.
When designing with this MCU, allocate sufficient decoupling (100 nF + 1 uF) near VDD pins and verify unused I/O pins are configured as outputs or inputs with internal pull-ups to minimize current leakage. The MCLR pin should be tied to VDD through a 10 kohm resistor unless in-circuit debugging is required.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC16F15224-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 PIC16F15224-I/ST (same form factor and footprint) — differing in ADC, Package, Operating Temperature, Program Memory (Flash), Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F15223-I/SL
✅ Drop-In✓ In Stock
$0.53 / Unit
View Datasheet →PIC16F15224-I/P
✅ Drop-In✓ In Stock
$0.78 / Unit
View Datasheet →PIC16F15213T-I/MF
✅ Drop-In✓ In Stock
$0.58 / Unit
View Datasheet →PIC16F1503-I/ST
✅ Drop-In✓ In Stock
$0.94 / Unit
View Datasheet →PIC16F1455-I/SL
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC16F15224-E/SL
✅ Drop-In✓ In Stock
$0.52 / Unit
View Datasheet →PIC16F15224-I/ST Maximum Ratings & Electrical Characteristics
| Core | PIC16 8-bit enhanced mid-range |
| Instruction Set | 49 instructions, 16 stack levels |
| Program Memory (Flash) | 7 KB (4K x 14) |
| RAM | 512 B |
| CPU Speed | 32 MHz maximum |
| Supply Voltage (VDD) | 2.5 V to 5.5 V |
| I/O Pins | 12 |
| ADC | 10-bit |
| PWM Channels | 2 |
| CCP Modules | 2 |
| Communication Peripherals | EUSART, MSSP (SPI/I2C) |
| Special Features | XLP Sleep, PPS, HLT, WDT |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | TSSOP-14 (ST), 14-terminal PDSO |
| Mounting Type | Surface Mount |
| MSL Level | 1 |
| RoHS Status | Compliant |
PIC16F15224-I/ST Pin Configuration
| Pin 1 | VDD — Positive supply voltage (2.5V to 5.5V) |
| Pin 2 | RA5 — I/O port A bit 5 / analog input |
| Pin 3 | RA4 — I/O port A bit 4 |
| Pin 4 | MCLR — Master Clear reset (active low, tie to VDD via 10 kohm) |
| Pin 5 | RC5 — I/O port C bit 5 |
| Pin 6 | RC4 — I/O port C bit 4 |
| Pin 7 | RC3 — I/O port C bit 3 / SCL |
| Pin 8 | RC2 — I/O port C bit 2 / SDA |
| Pin 9 | RC1 — I/O port C bit 1 / CCP2 |
| Pin 10 | RC0 — I/O port C bit 0 |
| Pin 11 | RA0 — I/O port A bit 0 / ICSPDAT |
| Pin 12 | RA1 — I/O port A bit 1 / ICSPCLK |
| Pin 13 | RA2 — I/O port A bit 2 |
| Pin 14 | VSS — Ground reference |
Typical Applications
PIC16F15224-I/ST is suitable for 6 applications: IoT Sensor Nodes, White Goods and Appliance Control, LED Lighting Drivers, Battery-Powered Portable Devices, Low-Cost Motor Control, HMI Touch Button Interfaces.
IoT Sensor Nodes
The PIC16F15224-I/ST fits IoT sensor nodes because of its sub-50 nA XLP Sleep current, 32 MHz operation that wakes the core in microseconds, and 12 I/O pins that map directly to sensor, LED, and button interfaces. Its 7 KB Flash is sufficient for BLE beacon or LoRaWAN driver stacks; its 10-bit ADC reads thermistor, photodiode, or battery voltage signals without an external amplifier. The TSSOP-14 footprint integrates into coin-cell powered designs where every square millimeter counts. XLP Sleep enables multi-year battery life when the node wakes only every few minutes to sample and transmit.
Recommended
White Goods and Appliance Control
The PIC16F15224-I/ST serves white-goods main control boards because its 2.5V-5.5V supply directly accepts 3.3V or 5V rails common in washing machines, refrigerators, and dishwashers. Two PWM channels drive motor speed or heating element control, while two CCP modules handle input capture for tacho feedback and compare for timed events. The 10-bit ADC reads temperature, water level, or current sensors with adequate resolution for closed-loop control. Industrial temperature grade -40C to +85C supports under-counter and garage environments.
Recommended
LED Lighting Drivers
The PIC16F15224-I/ST drives LED lighting fixtures using its dual PWM channels for warm-white / cool-white color mixing or RGB dimming control. The 32 MHz CPU executes 8-bit-per-channel PWM at frequencies above 1 kHz, eliminating visible flicker. EUSART and I2C peripherals interface to wireless modules for app-based dimming, while the 10-bit ADC reads ambient light sensors for daylight harvesting. XLP Sleep current below 50 nA enables standby power below 0.1W to meet energy-saving regulations like Energy Star.
Recommended
Battery-Powered Portable Devices
The PIC16F15224-I/ST suits battery-powered portable devices like remote controls, fitness bands, and wireless sensors thanks to XLP Sleep mode drawing sub-50 nA. The 2.5V minimum supply operates from a single AA or coin-cell battery down to end-of-life voltage, maximizing usable capacity. PPS (Peripheral Pin Select) routes UART, SPI, or I2C to any I/O pin, simplifying PCB layout when radio modules change between board revisions. The 14-pin TSSOP weighs under 50 mg and fits inside ultra-thin enclosures.
Recommended
Low-Cost Motor Control
The PIC16F15224-I/ST performs low-cost brushed DC or stepper motor control using its 2 PWM channels for H-bridge drive signals and 2 CCP modules for back-EMF sensing or stall detection. The 32 MIPS throughput executes field-oriented control loops for small BLDC motors under 50W. The 10-bit ADC reads phase current via a low-side shunt resistor for current limiting and torque control. Hardware limit timer (HLT) provides deterministic shutdown on over-current without CPU intervention, meeting functional safety basics for appliance drives.
Recommended
HMI Touch Button Interfaces
The PIC16F15224-I/ST implements touch-button human-machine interfaces using its ADC channels with mTouch capacitive sensing firmware, replacing mechanical buttons on glass-front panels. The 12 I/O pins drive up to 12 touch electrodes plus RGB LEDs for visual feedback. EUSART interfaces to a host controller for back-channel communication, while XLP Sleep reduces standby consumption below 10 uA when the panel is idle. The TSSOP-14 footprint fits behind 1.6 mm glass with no bezel, enabling modern sealed appliance front panels.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F15224-I/ST — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F15223-I/SL | PIC16F15224-I/P | PIC16F15224-E/SL | PIC16F1503-I/ST | PIC16F1455-I/SL |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TSSOP-14 (ST) | SOIC-14 (same 14-pin logic) | PDIP-14 (same 14-pin logic) | SOIC-14 (same 14-pin logic) | TSSOP-14 (ST) - same | SOIC-14 (same 14-pin logic) |
| Flash Memory | 7 KB | 3.5 KB | 7 KB | 7 KB | 3.5 KB | 14 KB |
| RAM | 512 B | 256 B | 512 B | 512 B | 256 B | 1024 B |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 20 MHz | 48 MHz |
| Operating Voltage | 2.5V to 5.5V | 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 |
| Peripheral Pin Select (PPS) | Yes | Yes | Yes | Yes | No (legacy) | Yes |
| XLP Sleep Current | < 50 nA | < 50 nA | < 50 nA | < 50 nA | < 100 nA | < 50 nA |
| Unit Price (1 pc) | $1.42 | $1.10 | $1.55 | $1.65 | $0.95 | $1.85 |
Key Differentiators
- 7 KB Flash with PPS at lowest cost point (vs PIC16F1503-I/ST)
- Sub-50 nA XLP Sleep current (vs PIC16F15223-I/SL)
- Industrial temperature grade standard (vs PIC16F15224-E/SL)
Design Notes
Place a 100 nF ceramic decoupling capacitor as close as possible to the VDD pin (pin 1) with a 1 uF to 10 uF bulk capacitor at the board supply input. For battery-powered designs using XLP Sleep mode, the bulk capacitor must be sized to supply the inrush when the MCU wakes from Sleep; estimate using I_wake * t_wake and select a value that holds VDD above 2.5V. Add a 10 kohm pull-up on MCLR (pin 4) to VDD unless in-circuit debugging is required. Estimated: at 8 mA wake current for 100 us, a 1 uF cap drops ~0.8V which is too much - use 10 uF minimum for VDD hold-up.
Keep the TSSOP-14 traces to the ICSP programming pins (RA0/RA1) accessible for in-circuit programming and debugging. Route analog ADC inputs away from PWM outputs and digital switching signals to minimize coupled noise. Use a ground pour under the IC and stitch vias around the PCB perimeter to reduce EMI. The exposed thermal pad is not present on this package, but maintaining a continuous ground plane aids thermal dissipation and signal integrity.
Do not leave unused I/O pins floating - configure them as outputs low or inputs with internal weak pull-ups enabled. Floating inputs draw excessive current and can cause unexpected wake events from Sleep. Ensure the configuration words are set correctly: enable the watchdog timer for unattended applications, disable low-voltage programming for production firmware, and verify the oscillator selection matches the hardware. Programming the wrong oscillator bits can lock the device and require high-voltage recovery.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified; for automotive applications consult Microchip automotive-grade portfolio.
