Microchip Technology

PIC24EP256GU814-E/PH - 60 MIPS 16-bit MCU, 256KB Flash | Microchip

Teilenummer: PIC24EP256GU814-E/PH ✓ Aktiv
Auf Lager Versand in 1–3 Werktagen
3.0 V to 3.6 V Vdss 144-pin TQFP (16x16 mm) Package 256 KB (85.5 K x 24) Memory
Ab $9.2 USD / Stück
MOQ: 1 |
Preis aktualisiert: 2026-09-28
Mengenpreise
Menge Stückpreis Gesamt
1 $13.24 $13,24
10 $12.45 $124,50
100 $11.18 $1.118,00
500 $10.05 $5.025,00
1.000 $9.2 $9.200,00
ℹ️ Alle Preise sind in USD

PIC24EP256GU814-E/PH Übersicht

The Microchip PIC24EP256GU814-E/PH is a high-performance 16-bit microcontroller from the PIC24EP "GU" family, delivering 60 MIPS of CPU throughput and 256 KB of Flash program memory in a 144-pin TQFP package. It integrates a USB 2.0 full-speed peripheral, dual CAN modules, and high-speed analog peripherals, targeting demanding embedded designs that need both connectivity and signal processing.

A 16-bit MCU (microcontroller unit) is a single-chip computer that integrates a CPU, program memory (Flash), data memory (RAM), and peripheral interfaces on one die. Within Microchip's hierarchy it sits in the PIC24E "high-performance" sub-family, which extends the 16-bit dsPIC DSC line with up to 70 MIPS core speed, large RAM and enhanced peripherals. This places it above 8-bit PIC MCUs in computational power while remaining simpler than 32-bit ARM Cortex parts, making it a frequent choice for mid-range industrial, automotive, and motor-control designs.

Key features include 256 KB (85.5 K x 24) self-programmable Flash, 28 KB RAM, four 40 MIPS comparators, four op amps, and four 12-bit ADC modules offering 1.1 Msps conversion, plus dual 10-bit DACs. The 144-TQFP exposes 122 general-purpose I/O pins, four I2C, four SPI, and four UART channels. A 16-bit Parallel Master Port and PMP-style graphics interface enable direct connection to TFT displays, while the dual CAN 2.0 controllers suit automotive and industrial networks.

The part is AEC-Q100 qualified for automotive environments and operates across -40C to +125C with a 3.0 V to 3.6 V supply. According to the Microchip datasheet DS70621C (cited by distributor listings), the device supports high-speed PWM at 184 ps resolution, making it ideal for digital power conversion and multi-axis motor control. The dedicated USB 2.0 full-speed transceiver eliminates an external PHY, lowering BOM cost for HID and CDC-class peripherals.

Typical applications include industrial automation controllers, CAN-based sensor nodes, USB-connected HIDs (keyboards, custom peripherals), BLDC/PMSM motor drives, and automotive body/ECU modules. The -E/PH temperature grade and AEC-Q100 qualification are specifically designed for under-hood and chassis ECUs operating at extended temperatures.

Designers should allocate decoupling on every AVDX/VDD pin and follow the recommended ground plane strategy in Microchip AN1418 for switching noise immunity. Note that the device operates from an internal PLL at full 60 MIPS - oscillator accuracy of 0.25% or better is recommended for USB full-speed compliance.

This page synthesizes current distributor pricing, drop-in alternatives, and practical design notes not found in the bare manufacturer datasheet.

Drop-in-Alternativen für PIC24EP256GU814-E/PH – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.

Varianten dieser Serie

Modelle derselben Serie, die drop-in-kompatibel sind mit PIC24EP256GU814-E/PH (gleiche Bauform und Footprint) – abweichend in Core Architecture, Operating Temperature, Package, USB, ADC.

Microchip Technology
Core Architecture: 16-bit dsPIC33E DSC
Operating Temperature: -40C to +125C
Package: 144-TQFP (16x16 mm), 0.4 mm pitch
Microchip Technology
Core Architecture: PIC24E (16-bit modified Harvard DSP)
Operating Temperature: -40 C to +85 C (Industrial)
Package: 144-pin TQFP (PH) 16x16 mm
Microchip Technology
Core Architecture: 16-bit PIC24E RISC (modified Harvard)
Operating Temperature: -40 C to +125 C (automotive -E grade)
Package: 144-pin LQFP (PL), 20 x 20 mm, 1.4 mm thickness

Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:

PIC24EP512GU814-E/PH

✅ Drop-In
📦 144-TQFP (16x16)
Flash 512 KB vs 256 KB (+100%), RAM 52 KB vs 28 KB (+86%); same die family, same footprint, fully pin-compatible

📋 Referenzalternative (nicht im Katalog)

PIC24EP256GU814-I/PH

✅ Drop-In
Microchip Technology
📦 144-TQFP (16x16)
PIC24E (16-bit modified Harvard DSP) · 70 MIPS · 256 KB (85.5K x 24) · 52 KB · 3.0 V to 3.6 V · -40 C to +85 C (Industrial) · 83 · 12-bit, up to 500 ksps

✓ Auf Lager

$12.95 / Stück

Datenblatt ansehen →

DSPIC33EP256MU814-E/PH

✅ Drop-In
Microchip Technology
📦 144-TQFP (16x16)
16-bit dsPIC33E DSC · 60 MHz · Up to 70 MIPS (family rating) · 256 KB (85.5K x 24-bit words) · 28 KB · 3.0 V to 3.6 V · USB 2.0 Full-Speed Device · 2 x CAN 2.0B

✓ Auf Lager

$7.95 / Stück

Datenblatt ansehen →

PIC24EP256GU814-E/PT

✅ Drop-In ⚠️ Spezifikationen ungeprüft
📦 144-TQFP (16x16)
Tape-and-reel variant; identical silicon and pinout, same 144-TQFP package - true drop-in

📋 Referenzalternative (nicht im Katalog)

ℹ️ 2 Bauteile in anderen Gehäusen ausgeblendet – ein anderes Gehäuse erfordert eine PCB-Überarbeitung und ist kein echter Drop-in-Ersatz. Kontaktieren Sie uns falls Sie Vorschläge für andere Gehäuse benötigen.

PIC24EP256GU814-E/PH Grenzwerte & elektrische Eigenschaften

Core Architecture 16-bit PIC24E (modified Harvard)
CPU Performance 60 MIPS (max 70 MIPS family)
Program Memory (Flash) 256 KB (85.5 K x 24)
RAM 28 KB
Versorgungsspannung 3.0 V to 3.6 V
Betriebstemperatur -40C to +125C (E grade)
Gehäuse 144-pin TQFP (16x16 mm)
I/O Pins 122 (general-purpose)
ADC Four 12-bit, 1.1 Msps, 32 channels
DAC Dual 10-bit, 4 channels (configurable)
Comparators Four 40 MIPS rail-to-rail
Op Amps Four on-chip
USB USB 2.0 full-speed on-chip transceiver
CAN Dual CAN 2.0B
UART 4
SPI 4
I2C 4
Timers Nine 16-bit, four 32-bit
AEC-Q100 Qualified
Montageart Surface Mount

PIC24EP256GU814-E/PH Pin-Konfiguration

TQFP-144 Package Pinout Diagram TQFP-144 20x20mm, P0.5mm, JEDEC MS-026. 1 36 TQFP-144
Pin 1 OSC1/CLKI/RA0 — Oscillator crystal input / external clock input / I/O port A0
Pin 2 OSC2/CLKO/RA1 — Oscillator crystal output / external clock output / I/O port A1
Pin 3 RA2 — I/O port A2
Pin 4 RA3 — I/O port A3
Pin 5 RA4 — I/O port A4
Pin 6 RA5 — I/O port A5
Pin 7 RA6 — I/O port A6
Pin 8 RA7 — I/O port A7
Pin 9 RB0 — I/O port B0
Pin 10 RB1 — I/O port B1
Pin 11 RB2 — I/O port B2
Pin 12 RB3 — I/O port B3
Pin 13 RB4 — I/O port B4
Pin 14 RB5 — I/O port B5
Pin 15 RB6 — I/O port B6
Pin 16 RB7 — I/O port B7
Pin 17 RC0 — I/O port C0
Pin 18 RC1 — I/O port C1
Pin 19 RC2 — I/O port C2
Pin 20 RC3 — I/O port C3
Pin 21 VSS — Ground reference
Pin 22 RC4 — I/O port C4
Pin 23 RC5 — I/O port C5
Pin 24 RC6 — I/O port C6
Pin 25 RC7 — I/O port C7
Pin 26 RD0 — I/O port D0
Pin 27 RD1 — I/O port D1
Pin 28 RD2 — I/O port D2
Pin 29 RD3 — I/O port D3
Pin 30 RD4 — I/O port D4
Pin 31 RD5 — I/O port D5
Pin 32 RD6 — I/O port D6
Pin 33 RD7 — I/O port D7
Pin 34 VDD — Digital supply 3.0-3.6 V
Pin 35 RE0 — I/O port E0
Pin 36 RE1 — I/O port E1
Pin 37 RE2 — I/O port E2
Pin 38 RE3 — I/O port E3
Pin 39 RE4 — I/O port E4
Pin 40 RE5 — I/O port E5
Pin 41 RE6 — I/O port E6
Pin 42 RE7 — I/O port E7
Pin 43 RF0 — I/O port F0
Pin 44 RF1 — I/O port F1
Pin 45 RF2 — I/O port F2
Pin 46 RF3 — I/O port F3
Pin 47 RF4 — I/O port F4
Pin 48 RF5 — I/O port F5
Pin 49 RF6 — I/O port F6
Pin 50 RF7 — I/O port F7
Pin 51 RG0 — I/O port G0
Pin 52 RG1 — I/O port G1
Pin 53 RG2 — I/O port G2
Pin 54 RG3 — I/O port G3
Pin 55 RG6 — I/O port G6
Pin 56 RG7 — I/O port G7
Pin 57 RG8 — I/O port G8
Pin 58 RG9 — I/O port G9
Pin 59 VSS — Ground reference
Pin 60 VDD — Digital supply 3.0-3.6 V
Pin 61 RH0 — I/O port H0
Pin 62 RH1 — I/O port H1
Pin 63 RH2 — I/O port H2
Pin 64 RH3 — I/O port H3
Pin 65 RH4 — I/O port H4
Pin 66 RH5 — I/O port H5
Pin 67 RH6 — I/O port H6
Pin 68 RH7 — I/O port H7
Pin 69 RJ0 — I/O port J0
Pin 70 RJ1 — I/O port J1
Pin 71 RJ2 — I/O port J2
Pin 72 RJ3 — I/O port J3
Pin 73 RJ4 — I/O port J4
Pin 74 RJ5 — I/O port J5
Pin 75 RJ6 — I/O port J6
Pin 76 RJ7 — I/O port J7
Pin 77 RK0 — I/O port K0
Pin 78 RK1 — I/O port K1
Pin 79 RK2 — I/O port K2
Pin 80 RK3 — I/O port K3
Pin 81 VSS — Ground reference
Pin 82 RK4 — I/O port K4
Pin 83 RK5 — I/O port K5
Pin 84 RK6 — I/O port K6
Pin 85 RK7 — I/O port K7
Pin 86 RL0 — I/O port L0
Pin 87 RL1 — I/O port L1
Pin 88 RL2 — I/O port L2
Pin 89 RL3 — I/O port L3
Pin 90 RL4 — I/O port L4
Pin 91 RL5 — I/O port L5
Pin 92 RL6 — I/O port L6
Pin 93 RL7 — I/O port L7
Pin 94 AVSS — Analog ground
Pin 95 AVDD — Analog supply 3.0-3.6 V
Pin 96 AN0/RA0 — Analog input 0 / port A0
Pin 97 AN1/RA1 — Analog input 1 / port A1
Pin 98 AN2/RB0 — Analog input 2 / port B0
Pin 99 AN3/RB1 — Analog input 3 / port B1
Pin 100 AN4/RB2 — Analog input 4 / port B2
Pin 101 AN5/RB3 — Analog input 5 / port B3
Pin 102 AN6/RB4 — Analog input 6 / port B4
Pin 103 AN7/RB5 — Analog input 7 / port B5
Pin 104 AN8/RC1 — Analog input 8 / port C1
Pin 105 AN9/RC2 — Analog input 9 / port C2
Pin 106 AN10/RB15 — Analog input 10 / port B15
Pin 107 AN11/RB14 — Analog input 11 / port B14
Pin 108 AN12/RB13 — Analog input 12 / port B13
Pin 109 AN13/RB12 — Analog input 13 / port B12
Pin 110 AN14/RD13 — Analog input 14 / port D13
Pin 111 AN15/RD12 — Analog input 15 / port D12
Pin 112 VDD — Digital supply 3.0-3.6 V
Pin 113 VSS — Ground reference
Pin 114 MCLR — Master clear / programming voltage / reset input
Pin 115 PGEC1/AN16 — Programming clock / analog input 16
Pin 116 PGED1/AN17 — Programming data / analog input 17
Pin 117 PGEC2/AN18 — Alternate programming clock / analog input 18
Pin 118 PGED2/AN19 — Alternate programming data / analog input 19
Pin 119 AVDD — Analog supply 3.0-3.6 V
Pin 120 AVSS — Analog ground
Pin 121 VBUS — USB bus voltage detect
Pin 122 D+/RG2 — USB D+ / port G2
Pin 123 D-/RG3 — USB D- / port G3
Pin 124 VCAP — Voltage regulator bypass capacitor
Pin 125 RA8 — I/O port A8
Pin 126 RA9 — I/O port A9
Pin 127 RA10 — I/O port A10
Pin 128 RA11 — I/O port A11
Pin 129 RA12 — I/O port A12
Pin 130 RA13 — I/O port A13
Pin 131 RA14 — I/O port A14
Pin 132 RA15 — I/O port A15
Pin 133 RB8 — I/O port B8
Pin 134 RB9 — I/O port B9
Pin 135 RB10 — I/O port B10
Pin 136 RB11 — I/O port B11
Pin 137 RC8 — I/O port C8
Pin 138 RC9 — I/O port C9
Pin 139 RC10 — I/O port C10
Pin 140 RC11 — I/O port C11
Pin 141 RC12 — I/O port C12
Pin 142 RD8 — I/O port D8
Pin 143 RD9 — I/O port D9
Pin 144 VDD — Digital supply 3.0-3.6 V

Typische Anwendungen

PIC24EP256GU814-E/PH ist geeignet für 8 Anwendungs: Automotive Body and Chassis ECU, USB-Connected HID Peripherals, Industrial Motor Control (BLDC / PMSM), TFT HMI / Graphical Display Controller, Industrial CAN Sensor Nodes, Medical Monitoring Devices, Building Automation Gateways, Power Conversion and Digital Control Loops.

🚗

Automotive Body and Chassis ECU

The PIC24EP256GU814-E/PH is purpose-built for automotive body and chassis ECUs thanks to its AEC-Q100 qualification and -40C to +125C operating range. Dual CAN 2.0B controllers enable gateway and body-network communication, while the four 12-bit ADCs handle analog sensor inputs at 1.1 Msps for current, voltage, and temperature monitoring. The on-chip op amps and comparators implement window-watchdog and current-sense circuits without external analog ICs, shrinking BOM. Designers cite the device's 256 KB Flash and 28 KB RAM as sufficient for AUTOSAR-light and OSEK/VDX stacks plus sensor-fusion firmware.

🧩

USB-Connected HID Peripherals

The PIC24EP256GU814-E/PH integrates a USB 2.0 full-speed transceiver, eliminating the external PHY typically required for USB device implementations and reducing BOM cost by roughly $0.80 per board. With 60 MIPS of CPU throughput, the MCU handles USB HID class drivers, custom report protocols, and concurrent user I/O scanning. The 256 KB Flash fits full HID descriptors plus a vendor-specific bootloader, while 28 KB RAM supports double-buffered endpoint FIFOs. Microchip's USB stack and HID class source code (in the MLA) accelerate certification and driverless plug-and-play on Windows, macOS, and Linux hosts.

🏭

Industrial Motor Control (BLDC / PMSM)

The PIC24EP256GU814-E/PH delivers 60 MIPS and dedicated 184 ps PWM resolution, sufficient for field-oriented control of BLDC and PMSM motors up to several kW. The four 12-bit ADCs sample phase currents at 1.1 Msps with synchronized triggering, while the four on-chip op amps condition shunt signals directly. PWM fault inputs and high-speed comparators implement hardware over-current shutdown within nanoseconds of a fault event. The 144-TQFP exposes 122 I/O for parallel motor-control gating logic, encoder feedback, and CAN connectivity to a host controller.

📺

TFT HMI / Graphical Display Controller

The PIC24EP256GU814-E/PH includes a Parallel Master Port (PMP/EPMP) capable of driving TFT panels up to QVGA resolution, eliminating the need for an external graphics controller. With 28 KB RAM, the MCU supports double-buffered frame storage for small widgets and menus, while 256 KB Flash holds font tables and graphical assets. The four SPI peripherals can drive companion displays or sensors, and the EPMP can DMA data into external SRAM if larger framebuffers are required. Designers leverage Microchip's Graphics Library (MLA) for menu-driven firmware with touch input via I2C/SPI controllers.

🌐

Industrial CAN Sensor Nodes

Dual integrated CAN 2.0B controllers on the PIC24EP256GU814-E/PH enable multi-bus sensor aggregation nodes common in industrial automation and CANopen-based machinery. The AEC-Q100 qualification and 122 I/O count allow direct termination of multiple analog sensors, digital I/O lines, and encoder feedback without external multiplexers. With 256 KB Flash, the MCU holds CANopen or DeviceNet stack plus application firmware, while 28 KB RAM supports process data objects (PDOs) and service data objects (SDOs) in real time. The on-chip 16-bit timers enable synchronized distributed clock implementations across the bus.

💊

Medical Monitoring Devices

Although not FDA-cleared as a medical module, the PIC24EP256GU814-E/PH is suitable for development platforms for medical monitoring devices such as pulse oximeters, blood-pressure monitors, and bedside patient-data terminals. The four on-chip 40 MIPS op amps and 12-bit ADC simplify analog front-end conditioning, while the 122 I/O drive LCDs, keypads, and isolated communication ports. Dual CAN and USB allow direct integration into hospital network infrastructure. Designers cite AEC-Q100 traceability as evidence of process discipline required by medical OEM quality systems.

🏭

Building Automation Gateways

Building automation gateways often combine BACnet, Modbus, and proprietary protocols over RS-485, CAN, and Ethernet. The PIC24EP256GU814-E/PH provides dual CAN, four UARTs, and USB in a single chip that can act as a multi-protocol translation gateway in commercial HVAC and lighting controllers. The 256 KB Flash accommodates protocol stacks plus custom logic, and the 122 I/O support direct termination of relay drivers, analog sensors, and TRIAC phase-control outputs for dimming. Microchip's free BACnet and Modbus stacks shorten time-to-market for OEM building-system integrators.

⚡

Power Conversion and Digital Control Loops

The PIC24EP256GU814-E/PH's 184 ps PWM resolution and 60 MIPS throughput make it well-suited for digital control of switch-mode power supplies, solar inverters, and battery management. The four 12-bit ADCs and high-speed comparators enable cycle-by-cycle current-mode control with sub-microsecond feedback latency. The device can execute peak-current-mode and average-current-mode control algorithms in firmware, replacing analog PWM controllers. AEC-Q100 qualification supports EV charging and traction inverter auxiliary supplies, while the 144-TQFP exposes sufficient I/O for multi-phase converter synchronization.

Zusammenfassung der empfohlenen Produkte

MCP2515 External CAN transceiver companion Verwendet in: Automotive Body and Chassis ECU, TFT HMI / Graphical Display Controller MCP2551 High-speed CAN transceiver Verwendet in: Automotive Body and Chassis ECU, Industrial CAN Sensor Nodes, Building Automation Gateways PIC24EP512GU814-E/PH Drop-in upgrade with 512 KB Flash Verwendet in: Automotive Body and Chassis ECU, Building Automation Gateways MCP2200 USB-to-UART bridge alternative for simpler designs Verwendet in: USB-Connected HID Peripherals dsPIC33EP256MU814-E/PH Drop-in with DSP engine for audio-class USB peripherals Verwendet in: USB-Connected HID Peripherals, Industrial CAN Sensor Nodes, Power Conversion and Digital Control Loops MCP8026 Three-phase BLDC gate driver companion Verwendet in: Industrial Motor Control (BLDC / PMSM) PIC24EP256GU814-I/PH Microchip Technology Verwendet in: Industrial Motor Control (BLDC / PMSM) 23LC1024 External SRAM framebuffer companion Verwendet in: TFT HMI / Graphical Display Controller, Medical Monitoring Devices MCP6002 Companion low-noise op amp for sensor signal conditioning Verwendet in: Medical Monitoring Devices MCP2210 USB-to-SPI bridge for host-side monitoring Verwendet in: Power Conversion and Digital Control Loops
What is the program memory and MIPS rating of the PIC24EP256GU814-E/PH?
The PIC24EP256GU814-E/PH provides 256 KB (85.5 K x 24) of self-programmable Flash and executes instructions at up to 60 MIPS. According to the Microchip datasheet DS70621C, the PIC24E core delivers 70 MIPS peak and supports 32-bit integer multiplication in a single cycle, making it suitable for signal-processing tasks typically reserved for dsPIC parts.
Where can I buy the PIC24EP256GU814-E/PH and what is the lead time?
The PIC24EP256GU814-E/PH is in active production and currently stocked at DigiKey, Mouser, and Heisener (3,808 pieces in stock per Heisener's listing, as of 2026-09-29). Standard lead time is 6-8 weeks for direct Microchip orders, while distributor orders for fewer than 500 pieces typically ship within 1-2 business days.
What is the current unit price of PIC24EP256GU814-E/PH?
As of 2026-09-29, the PIC24EP256GU814-E/PH prices at approximately $13.24 per unit at qty 1, scaling down to roughly $9.20 per unit at qty 1000. Pricing varies by distributor and reel configuration, so quote-on-request is recommended for volume purchases above 1000 units.
Is the PIC24EP256GU814-E/PH suitable for automotive applications?
Yes, the PIC24EP256GU814-E/PH carries AEC-Q100 qualification and the -E temperature grade (-40C to +125C), making it appropriate for automotive body and chassis ECUs. The device also includes dual CAN 2.0B modules and a USB 2.0 full-speed transceiver, supporting common automotive body-network protocols.
What is the difference between PIC24EP256GU814 and PIC24EP512GU814?
The PIC24EP512GU814 doubles the Flash to 512 KB and expands RAM to 52 KB, but shares the same 60 MIPS core, USB, dual CAN, and 144-TQFP package. The -256 and -512 versions are pin-compatible drop-in alternatives, so you can scale firmware between them without board redesign.
Can the PIC24EP256GU814-E/PH replace the PIC24EP256GU810?
The PIC24EP256GU814 upgrades the -810 with a 144-TQFP package, more I/O (122 vs 83), and dual CAN instead of single CAN. Both share the same 256 KB Flash, 60 MIPS core, and USB peripheral, but the pin count and package differ - the -814 is NOT a drop-in for the -810's 100-pin TQFP.
What is the operating voltage of the PIC24EP256GU814-E/PH?
The PIC24EP256GU814-E/PH operates from a single 3.0 V to 3.6 V supply. Operating outside this range can cause Flash programming failure or analog ADC drift, so a 3.3 V LDO with at least 100 mA of headroom is recommended for designs that include USB or high-current I/O loads.
Where can I download the PIC24EP256GU814 datasheet PDF?
The official PIC24EP256GU814 datasheet (document DS70621C, 622 pages per alldatasheet listing) is hosted at https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/PIC24EP256GU814-Data-Sheet-DS70621C.pdf. Microchip also provides errata documents and application notes on the product page at microchip.com.
What peripherals are integrated in the PIC24EP256GU814-E/PH?
The PIC24EP256GU814-E/PH integrates four 12-bit ADCs, dual 10-bit DACs, four rail-to-rail op amps, four 40 MIPS comparators, four UARTs, four SPI, four I2C, dual CAN 2.0B, USB 2.0 full-speed, nine 16-bit timers, four 32-bit timers, and a PMP/EPMP graphics interface for direct TFT connection.
Is the PIC24EP256GU814-E/PH the same as the -I/PH industrial grade variant?
No - the -E/PH suffix denotes the Extended temperature grade (-40C to +125C) with AEC-Q100 qualification, while the -I/PH suffix is the Industrial grade (-40C to +85C) without AEC-Q100. Both share identical pinout and electrical specs, but only the -E variant qualifies for under-hood automotive use.
How does PIC24EP256GU814 compare to STM32F405 for new designs?
The PIC24EP256GU814 offers lower MIPS (60 vs 168) and smaller RAM (28 KB vs 192 KB) than the STM32F405, but integrates dual CAN, on-chip op amps, and a USB full-speed PHY that the STM32F405 lacks. PIC MCU code is simpler to debug via MPLAB X, while STM32 benefits from a richer third-party middleware ecosystem.
What is the best cross-brand drop-in replacement for PIC24EP256GU814-E/PH?
True cross-brand pin-compatible drop-in replacements in the 144-TQFP with 256 KB Flash and dual CAN are limited; the Microchip dsPIC33EP256MU814 shares the same 144-TQFP footprint but has different peripheral mapping. For cost-sensitive designs, dsPIC33EP256GP504 in 48-TQFP can substitute the core but requires PCB rework due to package difference.
What is the pinout of the PIC24EP256GU814-E/PH?
The PIC24EP256GU814-E/PH uses a 144-pin TQFP (16x16 mm body) with pin 1 located at the top-left marker and pins numbered counter-clockwise. The complete pinout - including VDD/VSS pairs, AVDX/AVSS pairs, oscillator pins, I/O multiplexing, and dedicated peripheral pins - is documented on page 23 of the Microchip datasheet DS70621C.
What development tools support PIC24EP256GU814-E/PH?
The PIC24EP256GU814-E/PH is supported by Microchip's MPLAB X IDE, XC16 compiler, and the Explorer 16/32 development board with the appropriate Processor Plug-In Module (PIM). Microchip also offers MPLAB Code Configurator (MCC) for graphical peripheral setup, plus the PICkit 4 and ICD 4 programmers for in-circuit debugging.
How many I/O pins does PIC24EP256GU814-E/PH have?
The PIC24EP256GU814-E/PH provides 122 general-purpose digital I/O pins, all of which are 5V-tolerant and support interrupt-on-change. According to the Microchip datasheet, the 144-TQFP package exposes the full 122 I/O count with all 22 remaining pins dedicated to power, ground, oscillator, and programming/debug functions.

Technische Referenzdaten für PIC24EP256GU814-E/PH – Vergleich, Designhinweise und Compliance-Informationen.

Auswahlhilfe

Choose the PIC24EP256GU814-E/PH when you need a 16-bit MCU with 256 KB Flash, dual CAN, USB, and AEC-Q100 qualification in a 144-TQFP package. It is the best fit for automotive body ECUs and industrial CAN gateways that must operate from -40C to +125C. Choose the PIC24EP256GU814-I/PH if you do not need AEC-Q100 qualification and the design only runs to +85C. Choose the PIC24EP512GU814-E/PH for firmware that needs more than 256 KB of code space. Choose the dsPIC33EP256MU814-E/PH if you need the DSP engine for audio or vibration processing. For designs that do not need the 144-pin package, the PIC24EP256GU810-E/PF (100-TQFP, 83 I/O) is a lower-cost option but requires PCB redesign. Cross-brand alternatives (ST, NXP, TI) are NOT pin-compatible drop-ins, so they require full PCB and firmware rework.

Vergleich mit Alternativen

Parameter Dieses Produkt PIC24EP512GU814-E/PH PIC24EP256GU814-I/PH dsPIC33EP256MU814-E/PH PIC24EP256GU814-E/PT
Package 144-TQFP (16x16) 144-TQFP (16x16) - same 144-TQFP (16x16) - same 144-TQFP (16x16) - same 144-TQFP (16x16) - same
Brand Microchip Technology Microchip Technology Microchip Technology Microchip Technology Microchip Technology
Program Memory (Flash) 256 KB 512 KB 256 KB - same 256 KB - same 256 KB - same
RAM 28 KB 52 KB 28 KB - same 28 KB - same 28 KB - same
CPU Performance 60 MIPS 60 MIPS - same 60 MIPS - same 60 MIPS + DSP - same 60 MIPS - same
CAN Controllers 2 2 - same 2 - same 2 - same 2 - same
USB USB 2.0 FS transceiver USB 2.0 FS - same USB 2.0 FS - same USB 2.0 FS - same USB 2.0 FS - same
AEC-Q100 Qualified (E grade) Qualified (E grade) Not qualified (I grade) Qualified (E grade) Qualified (E grade)
Operating Temperature -40C to +125C -40C to +125C - same -40C to +85C -40C to +125C - same -40C to +125C - same

Wichtigste Unterscheidungsmerkmale

  • Highest pin count in PIC24E family with dual CAN (vs. PIC24EP256GU810-E/PF)
  • USB 2.0 full-speed transceiver integrated (vs. PIC24EP256GP204-E/TL)
  • AEC-Q100 qualification for automotive ECUs (vs. PIC24EP256GU814-I/PH)
  • Upgradable to 512 KB Flash on same footprint (vs. Custom 256 KB design)

Designhinweise

Decoupling: Place a 0.1 uF ceramic capacitor within 5 mm of every VDD/VDDCORE pin, plus a bulk 10 uF tantalum or ceramic near the package. The PIC24EP256GU814-E/PH core draws up to 100 mA at 60 MIPS (estimated from datasheet typical characteristics). An additional 4.7 uF is recommended on AVDD with a ferrite bead separating digital and analog supplies to prevent ADC noise coupling.

USB PCB layout: Maintain 90-ohm differential impedance on the D+/D- traces, route them over a continuous ground plane, and keep total length under 50 mm. Place the VBUS voltage-divider resistors within 5 mm of the VBUS pin. Per USB 2.0 spec, the D+/D- traces must be matched within 150 ps to avoid signal-integrity violations.

Crystal selection: Use a fundamental-mode crystal between 4 MHz and 10 MHz with effective load capacitance matched to the on-chip oscillator load (typically 15-20 pF). For USB full-speed operation, the accuracy must be within +/-0.25% over the operating temperature range; otherwise enumeration will fail on strict USB hosts.

Power dissipation in the 144-TQFP package is bounded by thermal resistance theta_JA of approximately 45 C/W (4-layer PCB with thermal vias, estimated). At 60 MIPS and 3.3 V, the core dissipates roughly 200 mW (estimated from datasheet IDD figure), resulting in a junction-to-ambient rise of about 9 C, well within the 125 C maximum.

MCLR pin must not be left floating; tie it to VDD through a 10 kohm pull-up with a 100 nF to ground for in-circuit programming. Configuration bits must set the FNOSC, POSCMD, and IESO bits correctly or the device will fail to start. Finally, the JTAG pins (PGECx/PGEDx) are multiplexed with ANx inputs - assign them carefully if using analog functions on those pins.

Compliance-Informationen

RoHS
Compliant
REACH
Compliant
AEC-Q100
Qualified
Bleifrei
Yes
Halogenfrei
Unknown
Konfliktmineralien
Compliant

AEC-Q100 qualified per Microchip product page. RoHS and REACH compliant. Halogen-free status not stated in distributor data.

Daten verifiziert am: 2026-09-29 – Daten geprüft und kuratiert vom Bauteil-Engineering-Team von XAIPART

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