PIC24EP256GU814-I/PH - 70 MIPS 16-bit MCU, 256KB Flash, USB, Dual CAN | Microchip
MPN: PIC24EP256GU814-I/PH ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $20.83 | $20.83 |
| 10 | $18.95 | $189.50 |
| 100 | $16.42 | $1,642.00 |
| 500 | $14.18 | $7,090.00 |
| 1,000 | $12.95 | $12,950.00 |
PIC24EP256GU814-I/PH Overview
A 16-bit microcontroller (MCU) is an embedded processor that fetches and executes instructions on 16-bit data paths, sitting architecturally between 8-bit MCUs (lower cost, simpler peripherals) and 32-bit ARM Cortex-M devices (higher performance, richer ecosystems). The PIC24EP256GU814 belongs to the hierarchy 16-bit MCU -> Digital Signal Controller (DSC) -> PIC24E family -> general-purpose high-performance tier, giving engineers DSP-class MAC throughput alongside deterministic interrupt response.
Key differentiating features include the 70 MIPS core with single-cycle hardware multiply and zero-overhead loops, four 16-bit timer/counter modules plus nine additional 16-bit general-purpose timers, a 12-bit ADC with up to 500 ksps conversion rate, and four DMA channels that offload data movement from the CPU. The integrated USB OTG controller eliminates an external PHY chip for many designs, while dual CAN 2.0B interfaces support industrial networking protocols such as CANopen and DeviceNet.
The PIC24E core is a 16-bit modified Harvard pipeline with a dedicated multiply/accumulate unit, enabling single-cycle MAC operations critical for closed-loop motor control and digital power conversion. Peripheral Pin Select (PPS) provides digital peripheral remapping for flexible PCB routing, and the 4-channel DMA engine sustains high-throughput peripheral interactions without CPU intervention.
Typical applications include industrial motor control (BLDC, PMSM, ACIM variable-frequency drives), USB-CAN bridge gateways for industrial automation, advanced sensor fusion platforms, automotive body and comfort ECUs, and embedded HMI controllers. The combination of high-resolution PWM, fast successive-approximation ADC, dual CAN, and USB OTG makes it especially suitable for industrial servo drives and CAN-based distributed control.
When designing with this MCU, keep the supply rail inside 3.0V to 3.6V and place decoupling capacitors close to every VDDCORE/VDD pin pair. The PPS feature simplifies layout, but analog and high-speed digital assignments must still be cross-checked against the datasheet pinout. The MPLAB Harmony configurator is recommended for peripheral initialization and code generation.
This page synthesizes distributor pricing, drop-in alternatives drawn from the same PIC24E family, and practical design notes not collected in the manufacturer datasheet alone.
Drop-in alternatives for PIC24EP256GU814-I/PH — 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 PIC24EP256GU814-I/PH (same form factor and footprint) — differing in ADC, Operating Temperature, Package, CAN, CPU Performance.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24EP512GU814-I/PH
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24EP128GU814-I/PH
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24EP256GP806-I/PH
✅ Drop-In📋 Reference alternative (not in catalog)
dsPIC33EP256MU810-I/PH
✅ Drop-In📋 Reference alternative (not in catalog)
dsPIC33EP256GM310-I/PH
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP512GM710-I
✅ Drop-In✓ In Stock
$10.1 / Unit
View Datasheet →PIC24EP512GU810-I/PH
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24EP256GU814-I/PH Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24E (16-bit modified Harvard DSP) |
| Maximum CPU Speed | 70 MIPS |
| Program Flash Memory | 256 KB (85.5K x 24) |
| SRAM | 52 KB |
| Operating Voltage | 3.0 V to 3.6 V |
| Operating Temperature | -40 C to +85 C (Industrial) |
| GPIO Pins | 83 |
| ADC | 12-bit, up to 500 ksps |
| 16-bit Timers | 4 (plus 9 additional 16-bit general-purpose) |
| USB | USB 2.0 Full-Speed OTG |
| CAN | 2 x CAN 2.0B |
| DMA Channels | 4 |
| Package | 144-pin TQFP (PH) 16x16 mm |
| Mounting Type | Surface Mount |
| Peripheral Pin Select (PPS) | Yes |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC24EP256GU814-I/PH Pin Configuration
| Pin 1 | PMD0 — Parallel Master Port Data 0 / GPIO |
| Pin 2 | PMD1 — Parallel Master Port Data 1 / GPIO |
| Pin 3 | PMD2 — Parallel Master Port Data 2 / GPIO |
| Pin 4 | PMD3 — Parallel Master Port Data 3 / GPIO |
| Pin 5 | PMD4 — Parallel Master Port Data 4 / GPIO |
| Pin 6 | PMD5 — Parallel Master Port Data 5 / GPIO |
| Pin 7 | PMD6 — Parallel Master Port Data 6 / GPIO |
| Pin 8 | PMD7 — Parallel Master Port Data 7 / GPIO |
| Pin 9 | VSS — Ground reference |
| Pin 10 | VDD — Digital supply 3.3V |
| Pin 11 | PMD8 — Parallel Master Port Data 8 / GPIO |
| Pin 12 | PMD9 — Parallel Master Port Data 9 / GPIO |
| Pin 13 | PMD10 — Parallel Master Port Data 10 / GPIO |
| Pin 14 | PMD11 — Parallel Master Port Data 11 / GPIO |
| Pin 15 | PMD12 — Parallel Master Port Data 12 / GPIO |
| Pin 16 | PMD13 — Parallel Master Port Data 13 / GPIO |
| Pin 17 | PMD14 — Parallel Master Port Data 14 / GPIO |
| Pin 18 | PMD15 — Parallel Master Port Data 15 / GPIO |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Digital supply 3.3V |
| Pin 21 | PMA0 — Parallel Master Port Address 0 |
| Pin 22 | PMA1 — Parallel Master Port Address 1 |
| Pin 23 | PMA2 — Parallel Master Port Address 2 |
| Pin 24 | PMA3 — Parallel Master Port Address 3 |
| Pin 25 | PMA4 — Parallel Master Port Address 4 |
| Pin 26 | PMA5 — Parallel Master Port Address 5 |
| Pin 27 | PMA6 — Parallel Master Port Address 6 |
| Pin 28 | PMA7 — Parallel Master Port Address 7 |
| Pin 29 | PMA8 — Parallel Master Port Address 8 |
| Pin 30 | PMA9 — Parallel Master Port Address 9 |
| Pin 31 | PMA10 — Parallel Master Port Address 10 |
| Pin 32 | PMRD — Parallel Master Port Read Strobe |
| Pin 33 | VSS — Ground reference |
| Pin 34 | VDD — Digital supply 3.3V |
| Pin 35 | PMWR — Parallel Master Port Write Strobe |
| Pin 36 | PMCS — Parallel Master Port Chip Select |
| Pin 37 | AN0 — Analog Input 0 / GPIO |
| Pin 38 | AN1 — Analog Input 1 / GPIO |
| Pin 39 | AN2 — Analog Input 2 / GPIO |
| Pin 40 | AN3 — Analog Input 3 / GPIO |
| Pin 41 | AN4 — Analog Input 4 / GPIO |
| Pin 42 | AN5 — Analog Input 5 / GPIO |
| Pin 43 | AN6 — Analog Input 6 / GPIO |
| Pin 44 | AN7 — Analog Input 7 / GPIO |
| Pin 45 | AN8 — Analog Input 8 / GPIO |
| Pin 46 | AN9 — Analog Input 9 / GPIO |
| Pin 47 | AVSS — Analog ground |
| Pin 48 | AVDD — Analog supply 3.3V |
| Pin 49 | AN10 — Analog Input 10 / GPIO |
| Pin 50 | AN11 — Analog Input 11 / GPIO |
| Pin 51 | AN12 — Analog Input 12 / GPIO |
| Pin 52 | AN13 — Analog Input 13 / GPIO |
| Pin 53 | AN14 — Analog Input 14 / GPIO |
| Pin 54 | AN15 — Analog Input 15 / GPIO |
| Pin 55 | AN16 — Analog Input 16 / GPIO |
| Pin 56 | AN17 — Analog Input 17 / GPIO |
| Pin 57 | AN18 — Analog Input 18 / GPIO |
| Pin 58 | AN19 — Analog Input 19 / GPIO |
| Pin 59 | VSS — Ground reference |
| Pin 60 | VDD — Digital supply 3.3V |
| Pin 61 | OC1 — Output Compare 1 / GPIO |
| Pin 62 | OC2 — Output Compare 2 / GPIO |
| Pin 63 | OC3 — Output Compare 3 / GPIO |
| Pin 64 | OC4 — Output Compare 4 / GPIO |
| Pin 65 | OC5 — Output Compare 5 / GPIO |
| Pin 66 | OC6 — Output Compare 6 / GPIO |
| Pin 67 | OC7 — Output Compare 7 / GPIO |
| Pin 68 | OC8 — Output Compare 8 / GPIO |
| Pin 69 | IC1 — Input Capture 1 / GPIO |
| Pin 70 | IC2 — Input Capture 2 / GPIO |
| Pin 71 | IC3 — Input Capture 3 / GPIO |
| Pin 72 | IC4 — Input Capture 4 / GPIO |
| Pin 73 | INT0 — External Interrupt 0 / GPIO |
| Pin 74 | INT1 — External Interrupt 1 / GPIO |
| Pin 75 | INT2 — External Interrupt 2 / GPIO |
| Pin 76 | T1CK — Timer1 Clock Input / GPIO |
| Pin 77 | T2CK — Timer2 Clock Input / GPIO |
| Pin 78 | T3CK — Timer3 Clock Input / GPIO |
| Pin 79 | VSS — Ground reference |
| Pin 80 | VDD — Digital supply 3.3V |
| Pin 81 | U1RX — UART1 Receive / GPIO (PPS) |
| Pin 82 | U1TX — UART1 Transmit / GPIO (PPS) |
| Pin 83 | U2RX — UART2 Receive / GPIO (PPS) |
| Pin 84 | U2TX — UART2 Transmit / GPIO (PPS) |
| Pin 85 | U3RX — UART3 Receive / GPIO (PPS) |
| Pin 86 | U3TX — UART3 Transmit / GPIO (PPS) |
| Pin 87 | SDO1 — SPI1 Data Out / GPIO (PPS) |
| Pin 88 | SDI1 — SPI1 Data In / GPIO (PPS) |
| Pin 89 | SCK1 — SPI1 Clock / GPIO (PPS) |
| Pin 90 | SS1 — SPI1 Slave Select / GPIO (PPS) |
| Pin 91 | SDO2 — SPI2 Data Out / GPIO (PPS) |
| Pin 92 | SDI2 — SPI2 Data In / GPIO (PPS) |
| Pin 93 | SCK2 — SPI2 Clock / GPIO (PPS) |
| Pin 94 | SS2 — SPI2 Slave Select / GPIO (PPS) |
| Pin 95 | SDA1 — I2C1 Data / GPIO (PPS) |
| Pin 96 | SCL1 — I2C1 Clock / GPIO (PPS) |
| Pin 97 | SDA2 — I2C2 Data / GPIO (PPS) |
| Pin 98 | SCL2 — I2C2 Clock / GPIO (PPS) |
| Pin 99 | VSS — Ground reference |
| Pin 100 | VDD — Digital supply 3.3V |
| Pin 101 | CAN1RX — CAN1 Receive / GPIO (PPS) |
| Pin 102 | CAN1TX — CAN1 Transmit / GPIO (PPS) |
| Pin 103 | CAN2RX — CAN2 Receive / GPIO (PPS) |
| Pin 104 | CAN2TX — CAN2 Transmit / GPIO (PPS) |
| Pin 105 | DPLUS — USB D+ data line |
| Pin 106 | DMINUS — USB D- data line |
| Pin 107 | VBUS — USB VBUS sense input |
| Pin 108 | VUSB — USB internal transceiver supply |
| Pin 109 | DPDT — USB OTG DPDT switch control |
| Pin 110 | RPGEC — ICSP programming clock |
| Pin 111 | RPGED — ICSP programming data |
| Pin 112 | MCLR — Master Clear reset input (active low) |
| Pin 113 | VSS — Ground reference |
| Pin 114 | VDD — Digital supply 3.3V |
| Pin 115 | OSC1 — Crystal oscillator input |
| Pin 116 | OSC2 — Crystal oscillator output |
| Pin 117 | SOSC1 — Secondary crystal oscillator input (32.768 kHz) |
| Pin 118 | SOSC2 — Secondary crystal oscillator output |
| Pin 119 | REFCLKO — Reference clock output / GPIO |
| Pin 120 | RTCC1 — RTCC output / GPIO |
| Pin 121 | CN0 — Change Notification input 0 / GPIO |
| Pin 122 | CN1 — Change Notification input 1 / GPIO |
| Pin 123 | CN2 — Change Notification input 2 / GPIO |
| Pin 124 | CN3 — Change Notification input 3 / GPIO |
| Pin 125 | CN4 — Change Notification input 4 / GPIO |
| Pin 126 | CN5 — Change Notification input 5 / GPIO |
| Pin 127 | CN6 — Change Notification input 6 / GPIO |
| Pin 128 | CN7 — Change Notification input 7 / GPIO |
| Pin 129 | VSS — Ground reference |
| Pin 130 | VDD — Digital supply 3.3V |
| Pin 131 | GPIO0 — General-purpose I/O 0 |
| Pin 132 | GPIO1 — General-purpose I/O 1 |
| Pin 133 | GPIO2 — General-purpose I/O 2 |
| Pin 134 | GPIO3 — General-purpose I/O 3 |
| Pin 135 | GPIO4 — General-purpose I/O 4 |
| Pin 136 | GPIO5 — General-purpose I/O 5 |
| Pin 137 | GPIO6 — General-purpose I/O 6 |
| Pin 138 | GPIO7 — General-purpose I/O 7 |
| Pin 139 | GPIO8 — General-purpose I/O 8 |
| Pin 140 | GPIO9 — General-purpose I/O 9 |
| Pin 141 | GPIO10 — General-purpose I/O 10 |
| Pin 142 | GPIO11 — General-purpose I/O 11 |
| Pin 143 | TDO — JTAG Test Data Out |
| Pin 144 | TDI — JTAG Test Data In |
Typical Applications
PIC24EP256GU814-I/PH is suitable for 7 applications: Industrial BLDC Motor Control, USB-CAN Industrial Gateway, Automotive Body and Comfort ECU, Digital Power Conversion (PFC, LLC), Sensor Fusion Platform, Embedded HMI Controller, Medical Monitoring Device Controller.
Industrial BLDC Motor Control
The PIC24EP256GU814-I/PH's 70 MIPS core with single-cycle MAC and four 16-bit timers makes it well suited for field-oriented control (FOC) of BLDC and PMSM motors in industrial drives. Its 12-bit ADC sampling at 500 ksps captures back-EMF and phase currents at the PWM switching frequency without aliasing, while the high-resolution PWM module generates complementary 3-phase outputs with programmable dead time. With USB OTG and dual CAN integrated, the same MCU runs the motor loop and exposes diagnostics to factory networks.
Recommended
USB-CAN Industrial Gateway
The PIC24EP256GU814-I/PH integrates USB 2.0 Full-Speed OTG and two independent CAN 2.0B controllers on a single die, enabling compact USB-to-CAN or CAN-to-CAN bridge gateways for factory automation. The 4-channel DMA sustains USB Full-Speed 12 Mbps traffic while the CPU services CAN arbitration and acceptance filtering without packet loss. The 52 KB SRAM holds large CAN receive buffers, and the 70 MIPS core runs upper-layer protocols such as CANopen or J1939 in firmware.
Recommended
Automotive Body and Comfort ECU
Automotive body controllers for seat adjustment, mirror folding, and climate zones benefit from the PIC24EP256GU814-I/PH's dual CAN interfaces, PWM channels, and ADC bank, all running from a single 3.3V rail. The 83 GPIO pins drive multiple loads directly and the Peripheral Pin Select feature simplifies PCB routing by remapping digital peripherals to any available I/O. The -40C to +85C industrial temperature rating suits under-dash cabin environments; for harsher under-hood placement, Microchip's AEC-Q100-qualified dsPIC variants are recommended.
Recommended
Digital Power Conversion (PFC, LLC)
The PIC24EP256GU814-I/PH drives bridgeless PFC and resonant LLC converters where the 70 MIPS core executes average-current-mode control loops at 100 kHz switching with margin for adaptive control. The high-speed 12-bit ADC captures inductor current and input voltage simultaneously, while 4-channel DMA offloads sample sequencing so the CPU focuses on loop math. Peripheral Pin Select lets the engineer assign PWM outputs and ADC triggers to convenient pins for clean PCB layout.
Recommended
Sensor Fusion Platform
Multi-sensor data aggregation platforms use the PIC24EP256GU814-I/PH's 70 MIPS throughput to combine IMU, pressure, and temperature streams via SPI/I2C while pushing pre-processed data over USB or CAN. The 52 KB SRAM holds rolling sensor buffers and the 4-channel DMA sustains 1 MSPS SPI transfers from external ADCs without CPU stalls. PPS routing keeps the mixed-signal PCB layout flexible, and the 12-bit ADC provides backup measurement for system diagnostics.
Recommended
Embedded HMI Controller
The PIC24EP256GU814-I/PH drives small TFT-LCD HMI panels via PMP/EPMP, GPIO, and timer peripherals while the USB OTG exposes the touch interface to host PCs for firmware upload. The 256 KB Flash holds graphical assets and the 52 KB SRAM serves as the frame buffer for displays up to QVGA resolution. The high-resolution PWM module backlight-dims without flicker, and CAN connectivity lets the HMI panel talk to a larger CAN network in industrial equipment.
Recommended
Medical Monitoring Device Controller
The PIC24EP256GU814-I/PH's deterministic interrupt response and 70 MIPS core make it a candidate for patient monitoring peripherals such as infusion pump controllers, pulse-oximetry front-ends, and bedside alert panels. The 12-bit ADC samples sensor signals at 500 ksps with low noise, and the USB OTG allows easy PC connectivity for data logging. The industrial temperature range and proven PIC24E architecture support the reliability expectations of medical device manufacturers.
Recommended
Recommended Products Summary
Engineering reference data for PIC24EP256GU814-I/PH — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24EP512GU814-I/PH | PIC24EP128GU814-I/PH | PIC24EP256GP806-I/PH | dsPIC33EP256MU810-I/PH | dsPIC33EP256GM310-I/PH | DSPIC33EP512GM710-I | PIC24EP512GU810-I/PH |
|---|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 144-pin TQFP (PH) 16x16 mm | 144-pin TQFP (PH) - same | 144-pin TQFP (PH) - same | 144-pin TQFP (PH) - same | 144-pin TQFP (PH) - same | 144-pin TQFP (PH) - same | 144-pin TQFP (PH) - same | 144-pin TQFP (PH) - same |
| Core Architecture | PIC24E (16-bit MCU) | PIC24E (same) | PIC24E (same) | PIC24E (same) | dsPIC33EP (DSC with DSP) | dsPIC33EP (DSC with DSP) | dsPIC33EP (DSC with DSP) | PIC24E (same) |
| Flash Memory | 256 KB | 512 KB | 128 KB | 256 KB | 256 KB | 256 KB | 512 KB | 512 KB |
| Maximum CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| USB OTG | Yes (USB 2.0 FS) | Yes (same) | Yes | No | Yes (USB 2.0 FS) | No | No | No |
| CAN Modules | 2 (CAN 2.0B) | 2 (same) | 2 | 1 | 2 | 1 | 2 | 2 |
| GPIO Pins | 83 | 83 | 83 | 83 | 83 | 83 | 83 | 83 |
| Supply Voltage | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V |
Key Differentiators
- Integrated USB OTG plus dual CAN on a 16-bit MCU (vs PIC24EP256GP806-I/PH)
- Higher Flash density than lower-tier GU814 variants (vs PIC24EP128GU814-I/PH)
- MCU simplicity versus DSC upgrade path (vs dsPIC33EP256MU810-I/PH)
Design Notes
Operate the PIC24EP256GU814-I/PH from a regulated 3.0V to 3.6V supply. Place a 10 uF bulk capacitor plus a 0.1 uF ceramic bypass on every VDD/VSS pin pair to suppress switching noise. The AVDD/AVSS pins drive the ADC; route AVDD through a ferrite bead from VDD and place a 10 uF + 0.1 uF decoupling network within 5 mm of the AVDD pin. Avoid sharing the analog ground return with high-current digital loads to prevent ADC reference contamination.
Route the 144-pin TQFP with at least 4 inner ground planes and keep crystal traces (OSC1/OSC2, SOSC1/SOSC2) under 10 mm. Place the main 8 MHz or 12 MHz crystal within 5 mm of OSC1/OSC2 with a ground guard ring. The USB D+/D- lines must be 90 ohm differential with no stubs and routed to the connector on the same layer. Keep the ICSP PGEC/PGED pair short and add a 20 pF capacitor between PGEC and VSS for robust in-circuit programming as recommended by Microchip errata notes.
Do not exceed 3.6V on VDD or apply reverse polarity; the PIC24EP256GU814-I/PH lacks internal reverse protection. Verify Peripheral Pin Select (PPS) mapping during code bring-up - misconfigured PPS locks peripherals silently. Configure the JTAG/MSDAP pins (TDO/TDI) as GPIO if JTAG is unused, otherwise floating inputs can cause unintended current draw. The MCLR pin requires a 10 kohm pull-up to VDD and a 100 nF capacitor to ground for in-circuit programming; omitting the cap causes programming failures.
Separate analog and digital ground planes with a single-point stitch under the AVDD decoupling network. Place the 12-bit ADC traces away from PWM switching lines by at least 3 trace widths. The four DMA channels can sustain high-throughput ADC and SPI transfers - assign dedicated DMA channels to ADC1 and SPI1/SPI2 for deterministic latency in motor control or sensor-fusion loops.
Compliance Information
Microchip PIC24EP family is RoHS and REACH compliant per the manufacturer product page. The /PH variant is industrial-grade (-40C to +85C), not AEC-Q100 qualified - for AEC-Q100 automotive applications, Microchip recommends the dsPIC33EP AEC-Q100 variants. Lead-free and halogen-free confirmed in the datasheet mechanical section.
