PIC24F08KL302T-I/SS - 16-bit 8KB Flash MCU, 32MHz XLP | Microchip
MPN: PIC24F08KL302T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.86 | $2.86 |
| 10 | $2.55 | $25.50 |
| 100 | $2.17 | $217.00 |
| 500 | $1.86 | $930.00 |
| 1,000 | $1.62 | $1,620.00 |
PIC24F08KL302T-I/SS Overview
A PIC24F microcontroller is a 16-bit RISC MCU built on Microchip's enhanced Harvard architecture; the KL3 sub-family targets cost-sensitive applications by migrating familiar PIC18 peripherals (MSSP I2C/SPI, CCP/ECCP, 10-bit ADC) into the 16-bit core, allowing engineers to leverage existing PIC18 firmware libraries while gaining higher throughput and a wider instruction set. It sits within the broader hierarchy: microcontroller -> embedded MCU -> semiconductor.
Key features include 256 bytes of EEPROM data memory, 3x 16-bit timers, 2x analog comparators with selectable reference, 1x UART, 1x I2C, 1x SPI, and ultra-low-power sleep modes (deep sleep current typically below 100 nA). The nanoWatt XLP technology delivers active current around 8 uA/MHz, enabling years of battery life in always-on edge devices.
Architecture-wise, the device uses a modified Harvard bus with separate program and data paths, hardware multiply, and a deterministic interrupt controller. The 32MHz internal oscillator eliminates the need for an external crystal in many cost-optimized designs, while a 4x PLL is selectable for higher instruction throughput.
Typical applications include low-cost IoT sensor nodes, battery-powered consumer devices, white goods and small home appliances, HVAC accessories, metering peripherals, and PIC18 migration designs. Designers choose this part when 8-bit PIC18 performance is insufficient but full PIC24EP cost is not required.
A key design tip is to use the 32MHz internal Fast RC oscillator with the PLL to save BOM cost, and to leverage the deep-sleep watchdog and RTCC for sub-microamp sleep profiles. Carefully review the configuration bits in the IDE to enable the correct oscillator mode before code generation.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC24F08KL302T-I/SS — 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 PIC24F08KL302T-I/SS (same form factor and footprint) — differing in Package, ADC, Operating Temperature, I/O Pins, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24F08KL302-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24F08KL302T-E/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24F08KL301-E/SS
✅ Drop-In✓ In Stock
$1.84 / Unit
View Datasheet →PIC24F08KA102T-I/SS
✅ Drop-In✓ In Stock
$2.25 / Unit
View Datasheet →PIC24F08KA102-I/SS
✅ Drop-In✓ In Stock
$2.05 / Unit
View Datasheet →PIC24F08KL201T-I/SS
✅ Drop-In✓ In Stock
$0.65 / Unit
View Datasheet →PIC24F08KL200T-I/ST
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC24F08KL302T-I/SS Maximum Ratings & Electrical Characteristics
| Architecture | PIC24F 16-bit RISC (enhanced Harvard) |
| Core | PIC24F |
| Series | PIC24F08KL302 / KL3 family |
| Program Memory (Flash) | 8 KB (2.75K x 24 words) |
| Data SRAM | 1 KB |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz (8 MIPS) |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| Operating Temperature | -40 C to +85 C (Industrial, 'I') |
| ADC | 10-bit, up to 12 channels |
| Comparators | 2x analog comparators |
| Timers | 3x 16-bit timer/counters |
| Communication | 1x UART, 1x I2C/MSSP, 1x SPI |
| Capture/Compare/PWM | CCP + ECCP |
| I/O Pins | Up to 25 GPIO |
| Low-Power Tech | nanoWatt XLP (deep sleep < 100 nA typ.) |
| Package | 28-pin SSOP (5.30 mm width) |
| Mounting Type | Surface Mount |
| Packaging Format | Tape & Reel (suffix 'T') |
| RoHS Status | Compliant |
PIC24F08KL302T-I/SS Pin Configuration
| Pin 1 | SDA/RB9 — I2C data / PORTB bit 9 / analog input |
| Pin 2 | RA4 — PORTA bit 4 / analog input |
| Pin 3 | RA5/MCLR — PORTA bit 5 / Master Clear (reset) |
| Pin 4 | RA6/OSC2 — PORTA bit 6 / oscillator output |
| Pin 5 | RA7/OSC1 — PORTA bit 7 / oscillator input |
| Pin 6 | VDD — Positive supply |
| Pin 7 | VSS — Ground |
| Pin 8 | RB0 — PORTB bit 0 / analog input |
| Pin 9 | RB1 — PORTB bit 1 / analog input |
| Pin 10 | RB2 — PORTB bit 2 / analog input |
| Pin 11 | RB3 — PORTB bit 3 / analog input |
| Pin 12 | RB4 — PORTB bit 4 / analog input |
| Pin 13 | RB5 — PORTB bit 5 / analog input |
| Pin 14 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pin 15 | RB7/PGD — PORTB bit 7 / ICSP data |
| Pin 16 | SCL/RB8 — I2C clock / PORTB bit 8 |
| Pin 17 | RA0 — PORTA bit 0 / analog input |
| Pin 18 | RA1 — PORTA bit 1 / analog input |
| Pin 19 | RA2 — PORTA bit 2 / analog input |
| Pin 20 | RA3 — PORTA bit 3 / analog input |
| Pin 21 | VDD — Positive supply (second) |
| Pin 22 | VSS — Ground (second) |
| Pin 23 | RB10 — PORTB bit 10 |
| Pin 24 | RB11 — PORTB bit 11 |
| Pin 25 | RB12 — PORTB bit 12 |
| Pin 26 | RB13 — PORTB bit 13 |
| Pin 27 | RB14 — PORTB bit 14 |
| Pin 28 | RB15 — PORTB bit 15 |
Typical Applications
PIC24F08KL302T-I/SS is suitable for 6 applications: Battery-Powered IoT Sensor Node, White Goods / Home Appliance Control, HVAC Accessory Thermostat, Consumer Wearable Health Monitor, PIC18 Migration Path - Cost-Sensitive 16-bit Upgrade, Industrial Metering & Telemetry Peripheral.
Battery-Powered IoT Sensor Node
The PIC24F08KL302T-I/SS fits IoT sensor nodes through nanoWatt XLP technology delivering typical active current around 8 uA/MHz and deep-sleep current below 100 nA. Its 8KB Flash holds duty-cycled firmware for temperature, humidity, or motion sensors with periodic UART/I2C wakeups. The 32MHz internal Fast RC oscillator with 4x PLL eliminates an external crystal, reducing BOM cost and standby current. Unlike higher-end Cortex-M0+ parts, the KL302 integrates PIC18 peripherals (MSSP, CCP) for straightforward migration from legacy 8-bit firmware, and the 10-bit ADC with up to 12 channels handles multiple analog sensors without an external MUX.
Recommended
White Goods / Home Appliance Control
The PIC24F08KL302T-I/SS is well-suited to white goods controls (coffee machines, blenders, dishwashers, washing-machine front panels) because the ECCP module produces the precise PWM signals needed to drive triac optocouplers, MOSFET gate drivers, and brushed-DC loads. The 10-bit ADC reads thermistors for over-temperature protection, while the 1.8-3.6V supply range operates from a regulated 3.3V rail or directly from rectified 5V. The industrial -40C to +85C rating matches appliance under-cabinet environments, and the 28-SSOP footprint leaves room for a compact user-interface PCB alongside an LED or LCD panel.
Recommended
HVAC Accessory Thermostat
The PIC24F08KL302T-I/SS works well in HVAC accessories including room thermostats and damper actuators where the 10-bit ADC scans thermistor bridges, the UART handles RS-485 Modbus communication to a central controller, and the ECCP module drives proportional valve solenoids. Its nanoWatt XLP sleep modes enable battery-backed operation across power outages, while the 1.8-3.6V supply range tolerates brownout events on rectified 24VAC rails. The 28-SSOP footprint supports compact wall-mount enclosures, and the industrial temperature grade sustains operation in attic and basement installations.
Recommended
Consumer Wearable Health Monitor
The PIC24F08KL302T-I/SS targets low-cost consumer wearables such as heart-rate straps, fitness bands, and pulse-oximeter accessories where deep-sleep current below 100 nA extends CR2032 coin-cell life into multi-month timeframes. The 32MHz CPU cycles through I2C sensor reads in <1 ms, then returns to sleep until a timer or interrupt wakes it. The 1.8-3.6V supply matches single-cell Li-ion chemistries directly, the 28-SSOP footprint supports thin PCB layouts, and the built-in 10-bit ADC provides backup for simple analog sensor channels in cost-sensitive variants.
Recommended
PIC18 Migration Path - Cost-Sensitive 16-bit Upgrade
The PIC24F08KL302T-I/SS is the natural upgrade target for engineers moving a mature PIC18 design to a 16-bit core without losing existing peripheral drivers. The MSSP module behaves like PIC18 I2C/SPI and the ECCP matches PIC18 CCP modes, so ported firmware typically runs with minimal register-level changes. The 32MHz CPU doubles throughput versus comparable PIC18F devices while keeping the 28-SSOP footprint familiar to layout designers. The 1.8-3.6V supply range matches PIC18LF low-voltage rails, so battery-powered PIC18F designs migrate with no power-system redesign.
Recommended
Industrial Metering & Telemetry Peripheral
The PIC24F08KL302T-I/SS fits metering peripherals for water, gas, and electricity sub-metering applications where the 10-bit ADC samples current-shunt or pulse-output sensors while the UART forwards data to a parent concentrator. Its 256-byte EEPROM supports 100k+ erase cycles, ideal for non-volatile log retention of tamper events and usage counters. Deep-sleep current below 100 nA combined with RTCC wakeups enables 10+ year battery life on lithium-thionyl chloride cells. The 1.8-3.6V supply range survives brownout events typical of unattended metering installations, and the industrial temperature grade covers outdoor enclosures.
Recommended
Recommended Products Summary
Engineering reference data for PIC24F08KL302T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24F08KL302-I/SS | PIC24F08KL302T-E/SS | PIC24F08KL301-E/SS | PIC24F08KA102T-I/SS | PIC24F08KL201T-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Program Flash Memory | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 4 KB (-50%) |
| Maximum CPU Frequency | 32 MHz (8 MIPS) | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Supply Voltage Range | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Temperature Range | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +125 C (Extended) | -40 C to +125 C (Extended) | -40 C to +85 C | -40 C to +85 C |
| Low-Power Family | nanoWatt XLP (KL3) | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt (older generation) | nanoWatt XLP |
| ADC Resolution | 10-bit, up to 12 channels | 10-bit, 12 ch | 10-bit, 12 ch | 10-bit, 12 ch | 10-bit, 12 ch | 10-bit, 12 ch |
Key Differentiators
- PIC18-compatible peripherals in a 16-bit core (vs PIC24F08KA102T-I/SS)
- Industry-leading deep-sleep current under 100 nA (vs PIC24F08KL201T-I/SS)
- 32MHz CPU with on-chip 4x PLL eliminates external crystal (vs PIC24F08KL302T-E/SS (extended grade))
Design Notes
The PIC24F08KL302T-I/SS draws <100 nA in deep sleep and roughly 8 uA/MHz active. Use deep sleep aggressively between sensor reads: wake on RTCC, capture an ADC sample, transmit on UART, and return to sleep. If the design uses an external 32.768 kHz crystal for RTCC, budget 0.5-1 uA continuous draw; otherwise use the internal LFINTOSC at 31 kHz to eliminate that cost. Decouple VDD with a 100 nF ceramic within 5 mm of the pin pair; the second VDD/VSS pair must also be decoupled for clean ADC readings.
Always verify the CONFIG words in MPLAB X before generating code: the default configuration enables the internal Fast RC oscillator with the PLL but may disable the MSSP I2C pins you intend to use. The RA5/MCLR pin is multiplexed with PORTA; if you need PORTA bit 5 you must disable the MCLR function in CONFIG3. Failing to configure the ADC channel select bits properly is a common source of 'stuck-at-zero' analog readings - always assert the AD1CHS register before starting a conversion.
Estimated: at 32MHz CPU and 3.3V supply, active current around 8 uA/MHz produces roughly 8 mA total active current and 26 mW of dissipation in the SSOP-28 package. The thermal resistance theta_JA is approximately 90 C/W, yielding a 2.3 C junction temperature rise above ambient - well within industrial limits. No heatsink is required under normal conditions; however, if you run in extended temperature variants near +125 C, derate ambient by 3-5 C to maintain the 100% duty-cycle rating.
Compliance Information
Microchip KL3 family parts ship in Pb-free SSOP packaging. Industrial (-I) temperature grade; no AEC-Q100 automotive qualification - migrate to PIC24F KLx AEC-Q100 variants for automotive use.
