PIC24F16KA101T-I/SO - 16KB Flash XLP 16-bit MCU | Microchip
MPN: PIC24F16KA101T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.45 | $3.45 |
| 10 | $3.05 | $30.50 |
| 100 | $2.62 | $262.00 |
| 500 | $2.31 | $1,155.00 |
| 1,000 | $2.04 | $2,040.00 |
PIC24F16KA101T-I/SO Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals. The PIC24F family belongs to the modified Harvard 16-bit RISC architecture from Microchip, sitting in the hierarchy between 8-bit PIC16/PIC18 MCUs and the 32-bit PIC32MX/dsPIC lines. The PIC® XLP™ (eXtreme Low Power) technology platform adds deep-sleep operating modes, Deep Sleep Brown-Out Reset (DSBOR), Deep Sleep Watchdog Timer (DSWDT), and a Real-Time Clock Calendar (RTCC) running from a 32kHz crystal — the cornerstone of nanoWatt-class power budgets. Within the broader taxonomy, the PIC24F16KA101 sits in the category "16-bit microcontroller -> MCU -> embedded computing -> semiconductor IC".
Key differentiating specifications include 16 MIPS CPU throughput at 32MHz, four 16-bit timers, a 10-bit 500 ksps ADC with up to 9 input channels, and four digital communication peripherals selectable from I²C, SPI, IrDA and UART/USART. Hardware touch sensing (mTouch™) is supported on capable pins. The part carries 16 GPIO pins, three programmable priority interrupt vectors, and on-chip debugging via two programming pins plus the standard ICSP interface.
Architecturally, the PIC24F16KA101 uses a 16-bit modified Harvard core with separate program and data buses, a 24-bit instruction word that compresses code density, and a wide peripheral set clocked from the system oscillator or an auxiliary 32kHz source. This combination lets a single 32MHz system oscillator drive the CPU while a separate low-power 32kHz crystal keeps the RTCC and DSWDT active during deep sleep, achieving quiescent currents in the nanoampere range.
Typical applications include portable medical and fitness sensors, low-power wireless sensor nodes, battery-powered industrial data loggers, smart remote controls, and IoT edge nodes where standby current is mission-critical. Designers should note that the XLP deep-sleep modes require careful configuration of DSBOR and RTCC alarm routing; failing to enable the auxiliary 32kHz crystal prevents the device from reaching its lowest sleep currents documented in the datasheet electrical characteristics table.
This page synthesizes distributor stock, cross-reference data, and design notes not found in the manufacturer datasheet — enabling faster PIC24F16KA101T-I/SO sourcing and qualification decisions.
Drop-in alternatives for PIC24F16KA101T-I/SO — 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 PIC24F16KA101T-I/SO (same form factor and footprint) — differing in Package, ADC, Core Architecture, Operating Temperature, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24F16KA101-I/SO
✅ Drop-In✓ In Stock
$1.92 / Unit
View Datasheet →PIC24F08KA101-I/SO
✅ Drop-In✓ In Stock
$1.49 / Unit
View Datasheet →PIC24F08KA101T-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24F16KA101-I/MQ
✅ Drop-In✓ In Stock
$1.65 / Unit
View Datasheet →PIC24F16KA101T-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24F 16-bit RISC modified Harvard |
| Program Memory (Flash) | 16 KB (5.5K x 24) |
| Data RAM | 2 KB |
| Data EEPROM | 512 B |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Operating Voltage Range | 1.8 V to 3.6 V |
| I/O Pins | 16 |
| ADC | 10-bit, 500 ksps, up to 9 channels |
| Timers | 4 x 16-bit |
| Communication Peripherals | I2C, SPI, IrDA, UART/USART (selectable 4 peripherals) |
| Package | 20-pin SOIC (0.295" / 7.50mm width) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40C to +85C (Industrial, "I") |
| Low-Power Technology | nanoWatt XLP with Deep Sleep (DSBOR / DSWDT / RTCC) |
| Programming / Debug | ICSP (In-Circuit Serial Programming), 2-wire programming |
| Touch Sensing | mTouch hardware support |
| RoHS Status | Compliant |
PIC24F16KA101T-I/SO Pin Configuration
| Pin 1 | MCLR — Master Clear (reset, active low) |
| Pin 2 | RA0/AN0 — GPIO RA0 / Analog input 0 / CVref |
| Pin 3 | RA1/AN1 — GPIO RA1 / Analog input 1 |
| Pin 4 | RB0/AN2 — GPIO RB0 / Analog input 2 |
| Pin 5 | RB1/AN3 — GPIO RB1 / Analog input 3 |
| Pin 6 | RB2/AN4 — GPIO RB2 / Analog input 4 |
| Pin 7 | RB3/AN5 — GPIO RB3 / Analog input 5 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI — Crystal oscillator input / external clock |
| Pin 10 | OSC2/CLKO — Crystal oscillator output / system clock out |
| Pin 11 | PGED1/SDA1 — ICSP data / I2C SDA1 |
| Pin 12 | PGEC1/SCL1 — ICSP clock / I2C SCL1 |
| Pin 13 | VDD — Positive supply voltage |
| Pin 14 | VSS — Ground reference (second pin) |
| Pin 15 | RA2 — GPIO RA2 |
| Pin 16 | RA3 — GPIO RA3 |
| Pin 17 | RB4/SDA2 — GPIO RB4 / I2C SDA2 |
| Pin 18 | RB5/SCL2 — GPIO RB5 / I2C SCL2 |
| Pin 19 | RA4 — GPIO RA4 |
| Pin 20 | RA5 — GPIO RA5 |
Typical Applications
PIC24F16KA101T-I/SO is suitable for 6 applications: Battery-Powered Wireless Sensor Node, Portable Medical / Fitness Wearable, Industrial Data Logger / Sensor Hub, Smart Remote Control / Home Automation HMI, IoT Edge Sensor Node (NanoWatt XLP), Low-Power Automotive Accessory Node (Non-Safety).
Battery-Powered Wireless Sensor Node
The PIC24F16KA101T-I/SO fits battery-powered wireless sensor nodes because its XLP nanoWatt deep-sleep current falls below 1 uA with RTCC running from a 32 kHz crystal, extending coin-cell life by months versus 8-bit MCUs. The 32MHz / 16 MIPS throughput at 3.3V lets the part execute a sensor-aggregation + radio-driver loop in under 4 ms, after which DSBOR + DSWDT shut down the core while the RTCC wakes the system every 30 s for a duty-cycled wake-up. With 16 KB Flash this comfortably fits an I2C sensor driver, a UART radio interface (e.g., to an RN2483 LoRa module), and a power-rail gating scheme. Designers should enable the auxiliary 32 kHz crystal to reach the nanoamp standby current quoted in the datasheet electrical characteristics; otherwise the part defaults to its internal LF-oscillator and consumes ~10x more quiescent current.
Recommended
Portable Medical / Fitness Wearable
Wearable fitness and portable medical devices benefit from the PIC24F16KA101T-I/SO's combination of 16-bit DSP-grade math (for accelerometer / heart-rate signal processing), XLP deep-sleep for overnight battery retention, and 1.8-3.6V operation that runs directly from a single-cell Li-poly. The 10-bit ADC with 500 ksps is adequate for pulse-oximetry and ECG envelope detection, and the four 16-bit timers support precise sensor-sampling windows without burning CPU cycles. Hardware mTouch sensing on capable pins allows capacitive buttons without extra ICs. In a typical fitness band the MCU stays in sleep 95% of the time, waking on RTCC alarm or motion-interrupt to take 1 ms of sensor data and re-enter sleep — yielding months of battery life on a 100 mAh cell.
Recommended
Industrial Data Logger / Sensor Hub
In industrial sensor hubs the PIC24F16KA101T-I/SO serves as a low-cost Modbus-RTU or UART-based concentrator that aggregates 4-8 analog inputs and forwards them upstream. Its 9-channel 10-bit ADC plus digital comparators handle 4-20 mA / 0-10V sensor conditioning when paired with external op-amps; 16 MIPS at 32MHz easily polls each channel at 100 Hz without FIFO overruns. The wide 1.8-3.6V supply lets it ride transient dips on 24V industrial rails (via LDO), and the industrial -40C to +85C rating supports outdoor / cabinet-less enclosures. Internal 512B EEPROM is convenient for storing node-ID, calibration constants, and run-hour counters — features that would otherwise require an external I2C EEPROM on this series.
Recommended
Smart Remote Control / Home Automation HMI
Smart remote controls and home-automation HMI panels use the PIC24F16KA101T-I/SO because its XLP sleep currents (sub-1 uA) allow multi-year battery life on AAA cells in standby, while the 32MHz burst speed handles IR-protocol encoding (RC5, NEC), Bluetooth-HID keymap dispatch, or Wi-Fi co-processor handshaking via UART. The 16 GPIO pins cover a typical 4x4 keypad matrix + LED indicator banks with hardware debouncing via the timers. mTouch capability replaces mechanical buttons on premium models. Deep-sleep DSWDT adds a safety-net watchdog in case the radio stack hangs during firmware development — without the watchdog drain penalty of an external supervisor.
Recommended
IoT Edge Sensor Node (NanoWatt XLP)
IoT edge sensor nodes benefit from the PIC24F16KA101T-I/SO's dedicated nanoWatt XLP deep-sleep block: DSBOR holds brown-out reset thresholds in sleep, DSWDT keeps a watchdog alive at < 1 uA, and the RTCC maintains wall-clock time on a 32 kHz crystal so the node can wake on scheduled intervals without running the main oscillator. The 16 KB Flash and 2 KB SRAM comfortably store an MQTT-SN or CoAP client over UART-attached LoRa / NB-IoT modules. Combined with a 3.3V LDO and a single 2000 mAh Li-SO2 primary cell, end-nodes can run 5-10 years unattended on a single battery. The 16 MIPS CPU lets the node run an L3 DTLS handshake during the brief wake window.
Recommended
Low-Power Automotive Accessory Node (Non-Safety)
Although the PIC24F16KA101T-I/SO is industrial-grade (-40C to +85C) and NOT AEC-Q100 qualified, it fits non-safety automotive accessories such as cabin USB chargers, ambient-lighting controllers, infotainment auxiliary keypads, and aftermarket alarm-system auxiliary sensors. Its 1.8-3.6V operation rides downstream of an automotive 5V or 12V LDO, and the 32MHz throughput handles LIN-bus polling via UART plus PWM for LED drivers. Designers should add an external CAN or LIN transceiver because the PIC24F16KA101 lacks on-chip CAN. For safety-relevant nodes, migrate to PIC24HJ128GP502 or dsPIC33EV family AEC-Q100 parts.
Recommended
Recommended Products Summary
Engineering reference data for PIC24F16KA101T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24F16KA101-I/SO | PIC24F08KA101-I/SO | PIC24F08KA101T-I/SO |
|---|---|---|---|---|
| Package | 20-SOIC (7.50mm) | 20-SOIC (same) | 20-SOIC (same) | 20-SOIC (same) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 16 KB Flash | 16 KB Flash | 8 KB Flash | 8 KB Flash |
| Data RAM | 2 KB | 2 KB | 1 KB | 1 KB |
| Maximum Frequency | 32 MHz (16 MIPS) | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V |
| XLP nanoWatt Features | DSBOR + DSWDT + RTCC | DSBOR + DSWDT + RTCC | DSBOR + DSWDT + RTCC | DSBOR + DSWDT + RTCC |
| Price (qty 1) | $3.45 | $3.20 - $3.45 | $2.95 - $3.10 | $2.95 - $3.10 |
Key Differentiators
- nanoWatt XLP with DSBOR + DSWDT + RTCC (vs PIC24F08KA101-I/SO (8KB Flash variant))
- Tape-and-reel packaging for SMT production (vs PIC24F16KA101-I/SO (tube packaging))
- 16-bit modified Harvard RISC architecture (vs PIC18F46K22 (8-bit))
Design Notes
Estimated — Enable the auxiliary 32 kHz crystal and configure RTCC for periodic wake to reach sub-1 uA deep-sleep current. The datasheet shows typical deep-sleep current of 20-50 nA with DSWDT + RTCC active and DSBOR disabled in DEEP_SLEEP configuration register. Without the 32 kHz crystal, the part falls back to internal LF-OSC and consumes roughly 10x more current. Place a 22 pF load cap matching the crystal's CL rating on both OSC1 and OSC2 traces, kept short to avoid stray capacitance.
Estimated — Place a 100 nF decoupling capacitor within 3 mm of each VDD pin, with a wide ground pour tying VSS pins together. The 20-SOIC package has two VDD/VSS pairs (pins 8/13 and 14/16); both must be decoupled. Add a 4.7 uF bulk capacitor near the IC for ADC reference settling. Keep the ICSP PGED1/PGEC1 traces accessible on the PCB edge or test points for in-circuit programming without removing the chip from the board.
Estimated — Do not exceed 3.6V on VDD; the absolute-maximum is 4.0V per datasheet, but reliability degrades rapidly above 3.6V. Avoid leaving MCLR floating — always tie it to VDD through a 10 kOhm pull-up and a 100 nF cap to ground for noise immunity. The PGEC1/PGED1 pins double as I2C1 (SCL1/SDA1) and the second set (RB4/RB5) as SCL2/SDA2; using both I2C buses simultaneously requires careful pin assignment to avoid contention. Note that the "T" suffix only indicates tape-and-reel — the silicon is identical to PIC24F16KA101-I/SO so code is interchangeable.
Compliance Information
PIC24F16KA101T-I/SO is RoHS and REACH compliant per Microchip product page. It is NOT AEC-Q100 qualified; choose AEC-Q100 variants (PIC24F16KA101-E or PIC24FV... variants) for safety-relevant automotive nodes. The "I" in the part number denotes Industrial temperature (-40C to +85C) only, NOT automotive grade.
