PIC24F04KA200-I/ST - 16-bit XLP MCU 4KB Flash | Microchip
MPN: PIC24F04KA200-I/ST ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.34 | $2.34 |
| 10 | $2.18 | $21.80 |
| 100 | $1.89 | $189.00 |
| 500 | $1.65 | $825.00 |
| 1,000 | $1.42 | $1,420.00 |
PIC24F04KA200-I/ST Overview
What is a 16-bit microcontroller? A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data memory, and integrated peripherals such as ADC, timers, and communication interfaces. PIC24F devices use Microchip's modified Harvard architecture with separate program and data buses to allow simultaneous instruction fetch and data access, achieving deterministic throughput while retaining C-compiler friendliness through a 24-bit instruction word. Within the broader semiconductor taxonomy, an MCU sits under microcontrollers -> microprocessors -> logic ICs -> integrated circuits, and the PIC24F specifically targets ultra-low-power embedded applications.
Key features of the PIC24F04KA200-I/ST include 4 KB (1.375K x 24) self-programmable Flash with program-memory erase, 512 B SRAM, 10-bit 1.1 Msps ADC with up to 9 channels, five 16-bit timers, two UART modules, one SPI and one I2C peripheral, four capture inputs, and four PWM outputs. The integrated RTCC operates down to 1.8 V with an external 32.768 kHz crystal for calendar-aware sleep wake-ups. Multiple power-saving modes - Sleep, Idle, Deep Sleep, and Deep Sleep with RTCC - enable quiescent currents as low as 20 nA with full RAM retention, making the device a strong fit for energy-harvesting and primary-cell battery designs.
From an architecture perspective, the PIC24F04KA200 family uses a wide instruction pipeline with hardware multiply and divide, supporting both C and assembly development under MPLAB X IDE with the XC16 compiler. The internal 8 MHz oscillator with 4x PLL reaches the 32 MHz FOSC limit, and an auxiliary 31 kHz internal oscillator keeps RTCC timing during deep sleep. CIPs (Core Independent Peripherals) such as the Configurable Logic Cell and Peripheral Pin Select reduce the need for external glue logic, accelerating BOM cost and PCB area on tightly constrained designs.
Typical applications include IoT sensor nodes (BLE/Zigbee co-processor hosts), battery-powered remote controls, medical wearables such as glucose meters and pulse oximeters, industrial smart meters, consumer thermometers, and low-cost HVAC thermostats. The XLP feature set is equally well suited to e-metering and asset-tracking tags. A primary design consideration is correctly budgeting the deep-sleep wake current versus active-mode throughput: at 32 MHz the device draws roughly 8 mA, so designers should size tasks to minimize active dwell time. The 14-TSSOP footprint is a real-world surface-mount package shared across the PIC24F04KA201 / PIC24FV04KA200 variants, enabling straightforward PCB layout reuse.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC24F04KA200-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 PIC24F04KA200-I/ST (same form factor and footprint) — differing in Package, Core Architecture, Timers, ADC, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24F04KA201-I/ST
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FV04KA200-I/ST
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24F04KA200T-I/ST
✅ Drop-In✓ In Stock
$1.99 / Unit
View Datasheet →PIC24F08KA101-I/ST
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24F16KA101-I/ST
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24F04KA200-I/ST Maximum Ratings & Electrical Characteristics
| Core | PIC24F 16-bit RISC |
| Family | PIC® XLP 24F |
| Program Memory (Flash) | 4 KB (1.375K x 24) |
| Data Memory (SRAM) | 512 B |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Operating Voltage Range | 1.8 V to 3.6 V |
| ADC | 10-bit, up to 500 ksps / 1.1 Msps |
| ADC Channels | Up to 9 |
| Timers | 5 x 16-bit |
| Communication | 2x UART, 1x SPI, 1x I2C |
| PWM Outputs | 4 |
| Capture Inputs | 4 |
| GPIO | Up to 12 |
| RTCC | Yes, with external 32.768 kHz crystal |
| Deep Sleep Current | Approximately 20 nA (typical, RAM retention) |
| Package | 14-TSSOP (ST) |
| Operating Temperature | -40C to +85C (Industrial) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC24F04KA200-I/ST Pin Configuration
| Pin 1 | MCLR/VPP/RA5 — Master Clear (Reset) input / Programming voltage / GPIO RA5 |
| Pin 2 | RA0/AN0/CVD — GPIO RA0 / Analog input AN0 / CVD |
| Pin 3 | RA1/AN1/CVD — GPIO RA1 / Analog input AN1 / CVD |
| Pin 4 | RB0/AN2/SDI/SDA — GPIO RB0 / Analog input AN2 / SPI SDI / I2C SDA |
| Pin 5 | GND — Ground reference |
| Pin 6 | RB1/AN3/SCK/SCL — GPIO RB1 / Analog input AN3 / SPI SCK / I2C SCL |
| Pin 7 | RB2/AN4/SDO — GPIO RB2 / Analog input AN4 / SPI SDO |
| Pin 8 | RB3/AN5/PGED — GPIO RB3 / Analog input AN5 / ICSP data |
| Pin 9 | RB4/AN6/PGEC — GPIO RB4 / Analog input AN6 / ICSP clock |
| Pin 10 | RB8/T1CK — GPIO RB8 / Timer1 clock input |
| Pin 11 | RB9/P1A — GPIO RB9 / PWM output P1A |
| Pin 12 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
| Pin 13 | RA2/AN7/REF+ — GPIO RA2 / Analog input AN7 / ADC reference plus |
| Pin 14 | RA3/AN8/CVREF — GPIO RA3 / Analog input AN8 / Comparator voltage reference |
Typical Applications
PIC24F04KA200-I/ST is suitable for 6 applications: Battery-Powered IoT Sensor Node, Wearable Health Monitor, Consumer Remote Control, Smart Meter and Energy Harvester, Low-Cost HVAC Thermostat, Portable Medical Diagnostic Accessory.
Battery-Powered IoT Sensor Node
The PIC24F04KA200-I/ST fits IoT sensor node applications because its XLP architecture delivers 20 nA typical deep-sleep current while retaining full SRAM and RTCC state for calendar-aware wake-ups. In a typical implementation the MCU sleeps at 20 nA, wakes every 60 seconds on RTCC alarm, samples a temperature/humidity sensor over I2C, logs the result, and transmits via a co-resident BLE/Zigbee module over UART, then returns to deep sleep. Active-mode current of roughly 8 mA at 32 MHz limits total energy budget when paired with a CR2032 coin cell, but the duty cycle typically stays under 0.1% so average consumption remains below 10 microamps. Compared with Cortex-M0+ alternatives, the KA200 advantage is hardware-configurable peripheral pin select (PPS) that reduces external MUX logic.
Recommended
Wearable Health Monitor
The PIC24F04KA200-I/ST suits wearable health monitors such as fitness bands, pulse oximeters, and continuous glucose meters thanks to its 1.8 V to 3.6 V operating range and 20 nA deep-sleep current with full SRAM retention. PT-DRIVEN sampling of a pulse oximeter LED/photodiode pair uses the 10-bit ADC at up to 500 ksps with 9 channels, while RTCC calendar wake-ups schedule periodic SpO2 measurements without CPU intervention. Versus higher-end Cortex-M4 alternatives, the KA200 advantage is lower quiescent current for multi-day battery life on a single CR2032 cell, at the trade-off of reduced computational headroom for advanced heart-rate algorithms. Designers should budget the 32 MHz active-mode current of roughly 8 mA and minimize active dwell time to extend runtime.
Recommended
Consumer Remote Control
The PIC24F04KA200-I/ST is well matched to IR/RF remote control designs where 4 KB Flash easily accommodates a small keypad matrix decoder plus an IR protocol stack (RC5, NEC, SIRC). The 14-TSSOP footprint keeps PCB area under 1 square centimeter and the 1.8 V operation allows direct drive from a single CR2032 or pair of AAA cells. Versus higher-pin-count PIC18 alternatives, the KA200 advantage is smaller package and lower BOM cost while retaining 16-bit throughput. The device wakes from a button interrupt in under 100 microseconds, transmits an IR frame via PWM, then re-enters deep sleep. Power sequencing uses the integrated POR and BOR for clean button-press start-up across the full 1.8 V to 3.6 V range.
Recommended
Smart Meter and Energy Harvester
The PIC24F04KA200-I/ST serves smart electricity, water, and gas meters that harvest ambient energy from photovoltaic cells or thermoelectric generators, because its 1.8 V minimum operating voltage allows direct connection to low-voltage harvesters. Per Microchip datasheet DS30009973F, the integrated RTCC supports time-of-use billing via external 32.768 kHz crystal, while 9 ADC channels digitize multiple sensor inputs in metrology applications. The 20 nA deep-sleep current with full SRAM retention means a small supercapacitor backup can ride out weeks of darkness without losing meter state. Compared with PIC18LF alternatives, the KA200 advantage is the 32 MHz / 16 MIPS performance headroom for running metrology math at sample rates above 4 ksps.
Recommended
Low-Cost HVAC Thermostat
The PIC24F04KA200-I/ST provides the compute, ADC, and PWM channels required for a basic HVAC thermostat controlling relay outputs or triac drivers from a 24 VAC transformer. The 10-bit ADC samples thermistor or RTD temperature inputs at 500 ksps while four PWM outputs drive proportional valves, fan speeds, or LED indicators. PT draws schedule thermostat cycles between active measurement (32 MHz at 8 mA) and deep sleep (20 nA) to maintain average consumption below 200 microamps, allowing 24 VAC to power the MCU through a simple half-wave rectifier. Versus Cortex-M0 alternatives, the KA200 advantage is integrated RTCC for time-stamped scheduling and lower BOM cost in commercial-grade building controls.
Recommended
Portable Medical Diagnostic Accessory
The PIC24F04KA200-I/ST supports handheld medical accessories such as Bluetooth-enabled spirometer attachments, single-use diagnostic cartridges, and point-of-care readers because its XLP architecture delivers days of shelf life on a small primary battery. The 4 KB Flash holds a simple flow-control algorithm, the 10-bit ADC digitizes sensor waveforms at up to 500 ksps, and UART or SPI bridges to a host phone or BLE module. PT draws sleep current of 20 nA with full SRAM retention, keeping shelf drain below 2 microamp-hours per year on a CR2032. The -40C to +85C industrial temperature range supports refrigerated cartridge storage. Compared with PIC16 alternatives, the KA200 advantage is C-compiler-friendly 16-bit throughput for portable diagnostic algorithm development.
Recommended
Recommended Products Summary
Engineering reference data for PIC24F04KA200-I/ST — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24F04KA201-I/ST | PIC24FV04KA200-I/ST | PIC24F08KA101-I/ST | PIC24F16KA101-I/ST |
|---|---|---|---|---|---|
| Package | 14-TSSOP (ST) | 14-TSSOP - same | 14-TSSOP - same | 14-TSSOP - same | 14-TSSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 4 KB | 4 KB + 1 KB auxiliary | 4 KB | 8 KB | 16 KB |
| RAM | 512 B | 512 B | 512 B | 1 KB | 1.5 KB |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.0 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Maximum CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| Deep Sleep Current | Approximately 20 nA | Approximately 20 nA | Approximately 20 nA | Approximately 20 nA | Approximately 20 nA |
| ADC | 10-bit, 9 channels, 500 ksps | 10-bit, 9 channels, 500 ksps | 10-bit, 9 channels, 500 ksps | 10-bit, 9 channels, 500 ksps | 10-bit, 9 channels, 500 ksps |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C |
Key Differentiators
- Lower quiescent current than PIC18F predecessors (vs PIC18F13K50-I/P)
- Integrated RTCC eliminates external RTC IC (vs PIC18F46K22-I/P)
- 16-bit core with 16 MIPS outperforms 8-bit PIC16 alternatives (vs PIC16F1825-I/ST)
- Industrial temperature range with extended XLP support (vs PIC24F04KA200-E/ST)
Design Notes
Estimated: average current consumption for a 1% active-duty cycle sensor node using the PIC24F04KA200-I/ST can be calculated as Iavg = 0.99 x 20 nA + 0.01 x 8 mA = approximately 80 microamps. On a 220 mAh CR2032 cell this yields roughly 115 days runtime. Designers should use the lowest practical CPU clock during active phases and prefer RTCC wake-ups over timer interrupts to keep deep-sleep duration maximized. The DSBOR and DSWDT peripherals remain active in deep sleep and reset the device on voltage brownout, eliminating the need for external supervisor ICs.
At 3.3 V VDD and 32 MHz, the PIC24F04KA200-I/ST active current is approximately 8 mA, dissipating around 26 mW - well within TSSOP thermal limits. However, designers should not exceed the absolute maximum VDD of 3.6 V because ESD clamping diodes begin conducting above this threshold. For battery-powered applications below 2.0 V, enable the internal voltage regulator configuration to maintain stable core operation. Always provision a 100 nF decoupling capacitor within 2 mm of the VDD pin and a 10 uF bulk capacitor on the supply rail.
Place the 100 nF VDD decoupling capacitor within 2 mm of pin 12 and a 10 uF bulk capacitor on the same supply trace. Keep the 32.768 kHz RTCC crystal traces short and symmetric, with a guard ground around both pads to minimize capacitive coupling from switching nodes. Route the ICSP signals (PGED at pin 8 and PGEC at pin 9) directly to a 6-pin header on the board edge for in-circuit programming. Avoid routing PWM outputs near the ADC analog inputs to reduce digital switching noise coupling into precision measurements.
Do not exceed the 3.6 V absolute maximum on VDD - the PIC24FV04KA200 variant is required for 5 V systems. Always configure unused GPIO pins as digital outputs driven low rather than floating inputs, to avoid current leakage through internal ESD structures. When using the ADC, perform a calibration sequence at power-up and use the internal bandgap reference rather than external VDD reference for better stability across temperature. The MCLR pin (pin 1) should never be left floating - tie it through a 10 kohm pull-up to VDD for reliable operation.
Compliance Information
RoHS and lead-free compliant per Microchip product page and LCSC listing. Not AEC-Q100 qualified - not intended for automotive safety-critical applications. Industrial temperature grade -40C to +85C.
