PIC18F65K22-I/MRRSL - 8-bit MCU 32KB Flash QFN-64 | Microchip
MPN: PIC18F65K22-I/MRRSL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.12 | $5.12 |
| 10 | $4.55 | $45.50 |
| 100 | $3.95 | $395.00 |
| 500 | $3.48 | $1,740.00 |
| 1,000 | $3.1 | $3,100.00 |
PIC18F65K22-I/MRRSL Overview
An 8-bit PIC microcontroller is a reduced instruction set computer (RISC) core with a Harvard architecture that separates program and data memory, enabling single-cycle instruction execution. Within the broader hierarchy of microcontrollers, the PIC18F family sits at the high-performance end of Microchip's 8-bit portfolio, offering enhanced peripherals, C-compiler-friendly instruction set, and rich connectivity (UART, SPI, I2C, USB) compared to baseline PIC10/12/16 devices. Microcontrollers in general belong to the larger category of embedded computing silicon and power management ICs, serving as the programmable brain in nearly every modern electronic product.
Key features of the PIC18F65K22 family include up to 12 MIPS throughput at 64 MHz, an integrated mTouch capacitive-touch peripheral via CTMU, multiple communication interfaces, and nanoWatt XLP sleep modes consuming down to sub-microamp currents. The 64-pin QFN footprint provides 53 digital I/O pins with multiple peripheral multiplexing options. Internal oscillator and PLLs reduce external component count for cost-sensitive designs.
The PIC18F65K22's architecture is built around a 16-bit instruction word with an 8-bit data path, a single accumulator-based ALU, and a hardware multiplier that accelerates arithmetic. The 12-bit A/D converter uses a successive-approximation register (SAR) topology with acquisition-and-conversion timing fully programmable. This combination of deterministic interrupt response, deterministic timing, and rich analog integration makes it ideal for both control loops and human-interface subsystems.
Typical applications include automotive body and HVAC controls, industrial sensor interfaces, capacitive touch HMIs, low-power battery-driven telemetry, and USB peripherals. The wide 1.8V-5.5V operating range (subject to full-speed derating) and robust peripheral set simplify integration into mixed-voltage systems. Choose this device when AEC-Q100 qualification, 32KB-class Flash, and a moderate pin count converge on a single cost-effective MCU. When designing, verify ADC acquisition time against source impedance and budget adequate decoupling (100 nF + bulk) near the supply pins.
Drop-in alternatives for PIC18F65K22-I/MRRSL — 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 PIC18F65K22-I/MRRSL (same form factor and footprint) — differing in Package, Operating Temperature Range, Communication Peripherals, Timers, Data RAM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F65K22-I/MR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18F65K22T-I/MRRSL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F66K22-I/MR
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View Datasheet →PIC18F67K22-I/MR
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
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View Datasheet →PIC18F65K22-E/MR
✅ Drop-In✓ In Stock
$3.5 / Unit
View Datasheet →PIC18F65K22-I/PT
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View Datasheet →PIC18F65K22-I/MRRSL Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18 (8-bit RISC, Harvard) |
| Program Memory (Flash) | 32 KB |
| Data RAM | 2 KB |
| Data EEPROM | 1 KB |
| Maximum Clock Speed | 64 MHz |
| Operating Voltage Range | 2.5V / 3.3V / 5V (1.8V-5.5V wide range) |
| Operating Temperature Range | -40C to +85C (industrial, -I suffix) |
| Package | 64-pin QFN with exposed pad (MR) |
| Mounting Type | Surface Mount |
| ADC | 12-bit, up to 16 channels |
| Communication Interfaces | UART, SPI, I2C, USB (device) |
| CTMU | Charge Time Measurement Unit for capacitive touch |
| Low-Power Technology | nanoWatt XLP |
| Automotive Qualification | AEC-Q100 |
| RoHS Status | Compliant |
| Packaging | Tape & Reel (RRSL suffix) |
PIC18F65K22-I/MRRSL 64-pin qfn with exposed pad (mr) Pin Configuration Guide
Pin configuration for PIC18F65K22-I/MRRSL (64-pin qfn with exposed pad (mr) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for PIC18F65K22-I/MRRSL.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC18F65K22-I/MRRSL is suitable for 6 applications: Automotive Body Control Modules, Capacitive Touch HMI, Industrial Sensor Interfaces, Low-Power Battery Telemetry, USB Peripherals and Consumer Devices, Medical Monitoring Accessories.
Automotive Body Control Modules
The PIC18F65K22-I/MRRSL is well suited for automotive body control modules thanks to its AEC-Q100 qualification, industrial temperature range of -40C to +85C, and integrated 12-bit ADC for analog sensor readout. Its 64-pin QFN package with exposed pad provides strong thermal performance for the higher ambient temperatures found in cabin and under-hood regions. The 32 KB Flash and 2 KB RAM are sufficient for typical BCM firmware handling CAN/LIN stacks, lighting control, and switch debounce logic. Designers value the nanoWatt XLP low-power sleep modes that reduce quiescent current during parking periods.
Recommended
Capacitive Touch HMI
The integrated Charge Time Measurement Unit (CTMU) makes the PIC18F65K22 ideal for capacitive-touch human-machine interface applications including buttons, sliders, and proximity sensors. Combined with the 12-bit ADC and Microchip's mTouch library, it can decode capacitance changes without an external touch controller, reducing BOM cost and PCB area. The 32 KB Flash holds the touch scanning algorithm and gesture state machine, while the 53 available I/O pins support multi-key matrices. nanoWatt XLP low-power modes enable battery-powered remote controls and wake-on-touch HMIs that idle below 1 uA.
Recommended
Industrial Sensor Interfaces
The PIC18F65K22-I/MRRSL is appropriate for industrial sensor interface designs that require multiple analog inputs, communication bridges, and AEC-Q100-grade reliability for harsh-environment deployments. Its 12-bit SAR ADC with up to 16 channels can digitize temperature, pressure, and position sensors, while UART/SPI/I2C peripherals handle bridge connectivity to PLCs or industrial gateways. The wide 1.8V-5.5V operating range simplifies mixed-voltage sensor integration. The 64-pin QFN package supports the high pin count required for multi-channel sensor hubs with redundant fault lines.
Recommended
Low-Power Battery Telemetry
Battery-driven telemetry endpoints benefit from the PIC18F65K22's nanoWatt XLP technology, which drops sleep current to sub-microamp levels while retaining RAM and RTCC state for instant wake-up. The wide 1.8V-5.5V operating range allows direct connection to lithium, alkaline, and rechargeable chemistries without a separate regulator. The 32 KB Flash accommodates small LoRa, BLE-host, or sub-GHz protocol stacks when paired with an external radio transceiver. AEC-Q100 qualification makes it a strong choice for battery sensors mounted in automotive or industrial environments.
Recommended
USB Peripherals and Consumer Devices
The PIC18F65K22 integrates a USB 2.0 full-speed device peripheral with on-chip transceiver, simplifying USB HID, CDC, and custom-class designs without an external PHY. Its 32 KB Flash holds USB stacks such as Microchip's MLA library while leaving room for application code. The 53 I/O pins and QFN-64 package accommodate key matrix scanning, LED drivers, and external memory interfaces for richer peripherals. The industrial temperature grade and nanoWatt XLP modes support USB-powered devices that idle between user interactions to meet energy standards.
Recommended
Medical Monitoring Accessories
Although not FDA-cleared as a medical device, the PIC18F65K22-I/MRRSL is a suitable MCU core for accessory hardware such as fitness sensors, wearable HRMs, and bedside patient-monitoring peripherals. Its 12-bit ADC provides adequate resolution for pulse-oximetry front-ends and ECG signal conditioning chains. The nanoWatt XLP modes extend battery life across days of continuous monitoring, while the AEC-Q100 screening adds reliability margin expected by medical device manufacturers. Designers should pair it with appropriate analog front-ends and obtain regulatory clearances for their finished system.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F65K22-I/MRRSL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F65K22-I/MR | PIC18F65K22T-I/MRRSL | PIC18F66K22-I/MR | PIC18F67K22-I/MR | PIC18F65K22-E/MR |
|---|---|---|---|---|---|---|
| Package | 64-pin QFN (MR) | 64-pin QFN (MR) - same | 64-pin QFN (MR) - same | 64-pin QFN (MR) - same | 64-pin QFN (MR) - same | 64-pin QFN (MR) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 32 KB | 32 KB | 32 KB | 64 KB | 128 KB | 32 KB |
| RAM | 2 KB | 2 KB | 2 KB | 4 KB | 4 KB | 2 KB |
| EEPROM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C (extended) |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes | Yes | Yes |
| ADC Resolution | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit |
Key Differentiators
- AEC-Q100 automotive qualification at 32 KB Flash (vs PIC18F24J10-I/ML)
- Integrated CTMU for capacitive touch (vs PIC18F45K22T-I/PT)
- nanoWatt XLP technology with sub-uA Sleep (vs PIC18F65K90T-I/MRRSL)
Design Notes
The PIC18F65K22-I/MRRSL supports nanoWatt XLP ultra-low-power sleep modes with sub-microamp retention current for RAM and RTCC. For best low-power results, disable unused peripherals via PMDx registers before entering Sleep, configure all I/O as analog (to prevent digital-input-buffer leakage) on pins not actively used, and select the lowest-frequency oscillator source during idle periods. Estimated: at 3.0V with all peripherals off and RTCC active, typical Sleep current is around 100 nA, with full-power 64 MHz run current around 6-9 mA depending on peripherals enabled.
For the 64-pin QFN package, the exposed thermal pad must be soldered to the PCB ground plane with multiple vias stitching thermal relief to inner layers. Recommended layout: a 0.2 mm via array on 1.0 mm pitch under the pad, flooded copper on inner layers, and direct stitching to the top-layer ground pour. This provides both electrical ground return and thermal dissipation for AEC-Q100 thermal-cycling profiles. Decoupling: place 100 nF X7R ceramic capacitors as close as possible to each VDD/VSS pair, plus a single 10 uF bulk near the supply pin.
Common pitfalls on the PIC18F65K22 include: (1) forgetting to clear the POR/BOR flags after reset and mistaking them for legitimate faults; (2) configuring ADC channels that share digital-only pins as analog inputs, causing input-leakage current; (3) using the internal oscillator at full 64 MHz below 3.0V, which violates the datasheet's voltage-frequency derating curve; (4) leaving the CTMU current source enabled during Sleep, which prevents nanoWatt-level standby. Always read the configuration bits with the correct MCU configuration match before programming, and verify oscillator start-up timer (OST) timeout in crystal modes.
Compliance Information
AEC-Q100 qualification confirmed via datasheet automotive category listing. RoHS/REACH compliance per Microchip product page. Halogen-free status not stated in provided data.
