PIC32MK0256MCJ064T-E/R4X - 80MHz, 256KB Flash MCU | Microchip
MPN: PIC32MK0256MCJ064T-E/R4X ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.42 | $6.42 |
| 10 | $5.78 | $57.80 |
| 100 | $5.15 | $515.00 |
| 500 | $4.63 | $2,315.00 |
| 1,000 | $4.12 | $4,120.00 |
| 3,000 | $3.74 | $11,220.00 |
PIC32MK0256MCJ064T-E/R4X Overview
A 32-bit microcontroller (MCU) is a single-chip computer built around a 32-bit data-path processor core, in-system programmable Flash, on-chip RAM, and a configurable peripheral set. Within the broader taxonomy, the PIC32MK sits at the hierarchy: microcontroller -> 32-bit MCU -> MIPS-based MCU -> motor-control MCU -> industrial MCU -> embedded computing -> semiconductor. The microAptiv core delivers 1.57 DMIPS/MHz and supports DSP extensions and a single-precision FPU, making it suitable for closed-loop motor control and IIoT edge nodes.
Key features include 256KB Flash with ECC, 64KB SRAM, dedicated motor-control PWM with 7.5ns resolution, four on-chip op-amps (configurable as PGAs), CAN-FD, USB-FS, and multiple UART/SPI/I2C instances. The 64-VQFN package includes an exposed thermal pad giving a typical theta-JA around 24 C/W on a standard JEDEC 4-layer board, enabling reliable operation at industrial temperatures.
Typical applications include BLDC/PMSM motor drives, field-oriented control (FOC) of pumps and fans, industrial PLCs, and CAN-FD-connected IIoT edge nodes. The integrated op-amps reduce external component count for current sensing.
When designing with this part, ensure the PCB has a solid copper thermal pad with thermal vias beneath the exposed pad. The CAN-FD peripheral requires a CAN transceiver such as the MCP2562FD for off-board networking.
Drop-in alternatives for PIC32MK0256MCJ064T-E/R4X — 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 PIC32MK0256MCJ064T-E/R4X (same form factor and footprint) — differing in ADC, Package, Operating Temperature, Core Architecture, FPU.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MK0256MCJ064T-I/R4X
✅ Drop-In✓ In Stock
$3.99 / Unit
View Datasheet →PIC32MK0256MCJ064-E/R4X
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MK0256GPG064-I/R4X
✅ Drop-In✓ In Stock
$3.71 / Unit
View Datasheet →PIC32MK0256GPG064T-E/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.95 / Unit
View Datasheet →PIC32MK0256MCJ064T-E/R4X Maximum Ratings & Electrical Characteristics
| Core | MIPS32 microAptiv (32-bit) |
| Family | PIC32MK |
| Maximum CPU Frequency | 80 MHz (E variant; family headroom 120 MHz) |
| Flash Memory | 256 KB (256K x 8) with ECC |
| SRAM | 64 KB |
| Operating Voltage (VDD) | 2.3 V to 3.6 V |
| Package | 64-pin VQFN (9x9 mm) with exposed thermal pad |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +125C (E = Extended) |
| CAN-FD | Yes |
| USB | USB Full-Speed |
| Motor Control PWM | High-resolution, 7.5 ns step |
| On-chip Op-amps | 4 (configurable as PGAs) |
| MSL Level | 3 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
PIC32MK0256MCJ064T-E/R4X 64-pin vqfn (9x9 mm) with exposed thermal pad Pin Configuration Guide
Pin configuration for PIC32MK0256MCJ064T-E/R4X (64-pin vqfn (9x9 mm) with exposed thermal pad 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 PIC32MK0256MCJ064T-E/R4X.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC32MK0256MCJ064T-E/R4X is suitable for 6 applications: BLDC / PMSM Motor Drive, Industrial PLC and Field I/O, Industrial IoT Edge Node, Pump and Fan Variable-Frequency Drive, Robotics and Drone BLDC ESC, Solar Inverter Auxiliary Controller.
BLDC / PMSM Motor Drive
The PIC32MK0256MCJ064T-E/R4X is purpose-built for BLDC and PMSM motor drives thanks to its four on-chip op-amps (used as PGAs for current sensing) and 7.5 ns-resolution PWM. The integrated analog front-end removes the external current-sense amplifier, reducing BOM cost by ~$0.30 and PCB area by roughly 25%. The 80 MHz MIPS32 microAptiv core executes sensorless FOC loops within 8 us, leaving headroom for CAN-FD comms and housekeeping tasks. Operate from 2.3 V to 3.6 V; the extended -40C to +125C temperature grade supports under-hood automotive and outdoor industrial cabinets.
Recommended
Industrial PLC and Field I/O
In industrial PLC and field I/O modules, the PIC32MK0256MCJ064T-E/R4X delivers deterministic 80 MHz performance plus CAN-FD, USB-FS, and multiple UART/SPI/I2C interfaces required for distributed I/O racks. The 256 KB ECC Flash and 64 KB SRAM accommodate IEC 61131-3 runtimes plus protocol stacks (Modbus, CANopen, MQTT). The 64-VQFN (9x9 mm) package fits compact 36 mm DIN-module footprints. Industrial temperature grade (-40C to +125C E variant) supports cabinet-free deployments near motors.
Recommended
Industrial IoT Edge Node
For IIoT edge nodes, the PIC32MK0256MCJ064T-E/R4X combines Cortex-class DSP performance with CAN-FD for sensor aggregation and USB-FS for local diagnostics. ECC Flash is critical for unattended deployments where bit-flips from cosmic radiation or EMI can corrupt firmware. Operating from 2.3 V to 3.6 V, the device sips ~22 mA active and drops to <10 uA in deep sleep. Pair with an external Wi-Fi or LoRa module via SPI for cloud connectivity.
Recommended
Pump and Fan Variable-Frequency Drive
Pump and fan variable-frequency drives benefit from the PIC32MK0256MCJ064T-E/R4X's sensorless FOC capability and on-chip op-amps for current sensing. Sensorless FOC on this MCU achieves >85% efficiency on a 24V 5A BLDC fan, with switching losses dominated by the MOSFET bridge rather than the controller. The 80 MHz core executes the entire torque loop within 12 us at 20 kHz PWM, with bandwidth to spare for PFC and housekeeping.
Recommended
Robotics and Drone BLDC ESC
For drone electronic-speed controllers (ESC) and small robotics, the PIC32MK0256MCJ064T-E/R4X provides high-resolution PWM (7.5 ns step) and on-chip op-amps in a 9x9 mm VQFN footprint, ideal for compact ESC boards. The 80 MHz MIPS32 microAptiv core supports fast (sub-10 us) FOC loops necessary for high-RPM multirotor stabilization. E-temp grade ensures operation in -40C to +125C conditions encountered at altitude.
Recommended
Solar Inverter Auxiliary Controller
Auxiliary controllers inside solar inverters and power optimizers can use the PIC32MK0256MCJ064T-E/R4X for panel-level MPPT, panel monitoring, and CAN-FD uplink to the string inverter. The ECC Flash provides immunity to soft errors that could otherwise cause MPPT misbehavior. The 64-VQFN package's exposed thermal pad keeps the junction temperature manageable under direct sunlight when paired with adequate PCB copper pour.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MK0256MCJ064T-E/R4X — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MK0256MCJ064T-I/R4X | PIC32MK0256MCJ064-E/R4X | PIC32MK0256GPG064-I/R4X | PIC32MK0256GPG064T-E/PT |
|---|---|---|---|---|---|
| Package | VQFN-64 (9x9) | VQFN-64 (9x9) | VQFN-64 (9x9) | VQFN-64 (9x9) | TQFP-64 (different package) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum CPU Frequency | 80 MHz | 120 MHz | 80 MHz | 120 MHz | 120 MHz |
| Flash Memory | 256 KB ECC | 256 KB ECC | 256 KB ECC | 256 KB ECC | 256 KB ECC |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| On-chip Op-amps | 4 (PGA-capable) | 4 (PGA-capable) | 4 (PGA-capable) | 0 | 0 |
| CAN-FD | Yes | Yes | Yes | Yes | Yes |
| Temperature Grade | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) |
Key Differentiators
- Integrated op-amps eliminate external current-sense amplifiers (vs PIC32MK0256GPG064-I/R4X)
- 7.5 ns PWM resolution enables ultra-smooth torque control (vs PIC32MK0256GPG064-I/R4X)
- ECC Flash protects against soft errors in industrial environments (vs PIC32MK0256MCJ064T-I/R4X (industrial grade))
Design Notes
Estimated: at 80 MHz, VDDCORE = 1.2V typical, the PIC32MK0256MCJ064T-E/R4X draws approximately 22 mA active, dissipating roughly 26 mW. The 64-VQFN with exposed thermal pad has a typical theta-JA of ~24 C/W on a JEDEC 4-layer board. The junction temperature rise is approximately 24 * 0.026 = 0.6 C - negligible. Use a continuous copper pour with at least 8 thermal vias under the exposed pad for best heat spreading.
Place the 0.1 uF VDD decoupling capacitor within 3 mm of each VDD pin with a wide trace and via to the ground plane. Place a single 4.7 uF bulk capacitor near the package. Keep the crystal traces short (less than 5 mm) and guard them with a ground pour. The analog AVDD pin should be filtered through a ferrite bead from VDD and bypassed with 0.1 uF + 10 uF capacitors per the Microchip PIC32MK hardware design checklist.
Do not exceed 3.6V on any VDD pin; the device is not 5V tolerant. Configure unused pins as digital outputs low to minimize current draw. When migrating from PIC32MX, note that the PPS (Peripheral Pin Select) mapping is different and the CAN-FD peripheral requires initialization of both the CAN module and the I/O pins before bus traffic. The MSSP module needs configuration of SDA/SCL direction bits for I2C mode.
Compliance Information
RoHS and REACH compliant per Microchip product page. E-grade denotes extended temperature but is not AEC-Q100 qualified; choose automotive-graded PIC32 variants for AEC-Q100.
