DSPIC33EP256MC506-E/PT - 256KB Flash 16-bit DSC 64-TQFP | Microchip
MPN： DSPIC33EP256MC506-E/PT ✓ 啟用中DSPIC33EP256MC506-E/PT 概覽
A Digital Signal Controller is a hybrid device that places a single-cycle multiply-accumulate (MAC) DSP engine alongside a deterministic MCU core, optimized for closed-loop real-time control. Within Microchip's portfolio the dsPIC33E family sits between PIC24F microcontrollers and the higher-end dsPIC33F/C families, addressing motor control, power conversion, and advanced sensor-fusion applications where on-chip DSP throughput removes the need for a companion DSP.
Key features of the DSPIC33EP256MC506-E/PT include three on-chip operational amplifiers that can be configured with external passive networks as trans-impedance or difference amplifiers, one dedicated analog comparator, up to six PWM channels with edge-aligned or center-aligned modes, a Quadrature Encoder Interface (QEI) for rotary position sensing, a 12-bit ADC with up to 1.1 Msps conversion rate, and a CAN 2.0B module for industrial networking. The device also integrates a Peripheral Trigger Generator (PTG) for hardware-state-machine-driven sequencing, which offloads deterministic timing tasks from the CPU.
Architecturally, the DSPIC33EP256MC506 uses a modified Harvard bus with separate program and data paths, single-cycle MAC, and a 16x16-bit hardware fractional/integer multiplier. The integrated OpAmps save BOM cost and board area in current-sense paths that would otherwise require discrete amplifiers, while the high-speed PWM and 1 ns edge resolution allow direct driving of MOSFET/IGBT gate drivers in switched-mode power and motor control loops.
Typical applications include brushless DC (BLDC) and permanent-magnet synchronous motor (PMSM) field-oriented control, solar micro-inverters, digital power factor correction, LED lighting drivers, and automotive sensor-fusion ECUs. The combination of CAN bus and OpAmp-based current sensing makes it particularly well-suited to industrial servo drives and electric-vehicle traction sub-systems.
When designing with this device, ensure that the on-chip OpAmp feedback networks use the dedicated external resistor pads provided by the package, and verify that the switching frequency of the PWM is below the 1.1 Msps ADC throughput to avoid sampling aliasing in the current loop. Leave at least 10% Flash headroom for safety firmware updates.
This page synthesizes distributor pricing, drop-in alternatives from Microchip's same family, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 DSPIC33EP256MC506-E/PT — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： DSPIC33EP256MC506-E/PT （相同外形與佔位） — 差異在於 Package, Operating Temperature, Core Architecture, RAM, Maximum CPU Speed.
DSPIC33EP256MC506-I/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →DSPIC33EP512MC506-E/PT
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DSPIC33EP256MC506-H/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →DSPIC33EP256GP506-E/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →DSPIC33EP512GP506-E/PT
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DSPIC33EP256MC506-E/PT 最大額定值與電氣特性
| Core Architecture | dsPIC33E 16-bit DSC with DSP engine |
| Maximum CPU Speed | 60 MHz (70 MIPS) |
| Program Flash Memory | 256 KB |
| RAM | 32 KB |
| 封裝 | TQFP-64 (PT), 10x10 mm, 0.5 mm pitch |
| Temperature Grade | -40C to +125C (E = Extended Industrial) |
| Operating Voltage | 3.0 V to 3.6 V |
| On-chip OpAmps | 3 (configurable with external passives) |
| Analog Comparators | 1 dedicated + comparator outputs from OpAmps |
| ADC | 12-bit, up to 1.1 Msps |
| PWM Channels | Up to 6 high-speed PWM outputs |
| Quadrature Encoder Interface | Yes (QEI) |
| CAN Module | 1 x CAN 2.0B |
| Peripheral Trigger Generator (PTG) | Yes |
| Instruction Set | 16-bit dsPIC33E with DSP extensions (MAC, barrel shifter) |
| 安裝類型 | Surface Mount |
| MSL 等級 | 3 (168 hours) |
| RoHS 狀態 | Compliant |
DSPIC33EP256MC506-E/PT 腳位配置
| 腳位 1 | RP65/PMD7 — Remappable I/O or PWM output |
| 腳位 2 | RP66/PMD6 — Remappable I/O or PWM output |
| 腳位 3 | RP67/PMD5 — Remappable I/O or PWM output |
| 腳位 4 | RP68/PMD4 — Remappable I/O or PWM output |
| 腳位 5 | RP69/PMD3 — Remappable I/O or PWM output |
| 腳位 6 | RP70/PMD2 — Remappable I/O or PWM output |
| 腳位 7 | RP71/PMD1 — Remappable I/O or PWM output |
| 腳位 8 | RP72/PMD0 — Remappable I/O or PWM output |
| 腳位 9 | VSS — Ground |
| 腳位 10 | VDD — Digital supply voltage 3.3V |
| 腳位 11 | RP73/SDA1 — I2C1 data or remappable I/O |
| 腳位 12 | RP74/SCL1 — I2C1 clock or remappable I/O |
| 腳位 13 | RP75/SDA2 — I2C2 data or remappable I/O |
| 腳位 14 | RP76/SCL2 — I2C2 clock or remappable I/O |
| 腳位 15 | RP77/U1RTS — UART1 RTS or remappable I/O |
| 腳位 16 | RP78/U1CTS — UART1 CTS or remappable I/O |
| 腳位 17 | RP79/U1RX — UART1 RX or remappable I/O |
| 腳位 18 | RP80/U1TX — UART1 TX or remappable I/O |
| 腳位 19 | VCAP — Internal voltage regulator output, decouple to VSS |
| 腳位 20 | RP0/INT0 — External interrupt 0 or remappable I/O |
| 腳位 21 | RP1/INT1 — External interrupt 1 or remappable I/O |
| 腳位 22 | RP2/OC1 — Output compare 1 or remappable I/O |
| 腳位 23 | RP3/OC2 — Output compare 2 or remappable I/O |
| 腳位 24 | RP4/OC3 — Output compare 3 or remappable I/O |
| 腳位 25 | RP5/OC4 — Output compare 4 or remappable I/O |
| 腳位 26 | RP6/IC1 — Input capture 1 or remappable I/O |
| 腳位 27 | RP7/IC2 — Input capture 2 or remappable I/O |
| 腳位 28 | RP8/IC3 — Input capture 3 or remappable I/O |
| 腳位 29 | RP9/IC4 — Input capture 4 or remappable I/O |
| 腳位 30 | VSS — Ground |
| 腳位 31 | VDD — Digital supply voltage 3.3V |
| 腳位 32 | OSC1 — Crystal oscillator input |
| 腳位 33 | OSC2 — Crystal oscillator output |
| 腳位 34 | RP10/TMS — JTAG TMS or remappable I/O |
| 腳位 35 | RP11/TCK — JTAG TCK or remappable I/O |
| 腳位 36 | RP12/TDI — JTAG TDI or remappable I/O |
| 腳位 37 | RP13/TDO — JTAG TDO or remappable I/O |
| 腳位 38 | MCLR — Master clear reset (active low) |
| 腳位 39 | RP14/CN0 — Change notification or remappable I/O |
| 腳位 40 | RP15/CN1 — Change notification or remappable I/O |
| 腳位 41 | AN0 — Analog input 0 / OpAmp input |
| 腳位 42 | AN1 — Analog input 1 / OpAmp input |
| 腳位 43 | AN2 — Analog input 2 / OpAmp input |
| 腳位 44 | AN3 — Analog input 3 |
| 腳位 45 | AN4 — Analog input 4 |
| 腳位 46 | AN5 — Analog input 5 |
| 腳位 47 | VREF- — ADC reference voltage low |
| 腳位 48 | VREF+ — ADC reference voltage high |
| 腳位 49 | AVDD — Analog supply voltage 3.3V |
| 腳位 50 | AVSS — Analog ground |
| 腳位 51 | AN6 — Analog input 6 |
| 腳位 52 | AN7 — Analog input 7 |
| 腳位 53 | AN8 — Analog input 8 |
| 腳位 54 | AN9 — Analog input 9 |
| 腳位 55 | RP16/C1RX — CAN1 RX or remappable I/O |
| 腳位 56 | RP17/C1TX — CAN1 TX or remappable I/O |
| 腳位 57 | RP18 — Remappable I/O |
| 腳位 58 | RP19 — Remappable I/O |
| 腳位 59 | RP20 — Remappable I/O |
| 腳位 60 | RP21 — Remappable I/O |
| 腳位 61 | RP22/QEA — QEI Phase A or remappable I/O |
| 腳位 62 | RP23/QEB — QEI Phase B or remappable I/O |
| 腳位 63 | RP24/INDX — QEI Index or remappable I/O |
| 腳位 64 | RP25/HOME — QEI Home or remappable I/O |
典型應用
DSPIC33EP256MC506-E/PT 適用於 6 應用s: Brushless DC (BLDC) Motor Field-Oriented Control, PMSM Servo Drive for Industrial Robotics, Solar Micro-Inverter Power Conversion, Automotive Sensor-Fusion ECU, Digital Power Factor Correction (PFC), High-Brightness LED Lighting Driver.
Brushless DC (BLDC) Motor Field-Oriented Control
The DSPIC33EP256MC506-E/PT is purpose-built for sensorless and sensored BLDC field-oriented control. Its six high-speed PWM outputs drive the three-phase inverter at up to 1 ns edge resolution, while the three integrated OpAmps sample the phase currents directly through shunt resistors without external amplifiers. The QEI module accepts incremental encoder inputs for sensored rotor-position feedback, and the 12-bit 1.1 Msps ADC samples current and voltage within the same PWM cycle to keep the FOC loop deterministic at 20-40 kHz switching.
推薦
PMSM Servo Drive for Industrial Robotics
In industrial servo drives for permanent-magnet synchronous motors, the DSPIC33EP256MC506-E/PT executes the FOC algorithm at 70 MIPS with single-cycle MAC, leaving CPU headroom for cascaded position-velocity-current loops and the CANopen or EtherCAT communication stack. The integrated OpAmps implement differential current sensing on the DC bus, and the CAN 2.0B peripheral communicates with the robot controller. The extended -40C to +125C temperature grade supports cabinet-free installation near the motor.
推薦
Solar Micro-Inverter Power Conversion
The DSPIC33EP256MC506-E/PT drives the high-frequency MOSFETs in a solar micro-inverter stage that converts a 25-45 V panel input to a 230 V AC grid-tied output. The 70 MIPS DSP engine performs MPPT, current-mode control, and anti-islanding detection while the on-chip OpAmps sense inductor and grid currents. The 256 KB Flash holds grid-tie firmware with safety interlocks and the 32 KB RAM keeps the control loop state machine and ADC buffers on-chip, reducing latency below the 100 ms islanding detection window.
推薦
Automotive Sensor-Fusion ECU
In automotive body and chassis ECUs the DSPIC33EP256MC506-E/PT fuses wheel-speed, throttle-pedal, and steering-angle sensor inputs using its on-chip DSP engine. The CAN 2.0B peripheral interfaces with the vehicle bus, and the integrated OpAmps condition the analog sensor outputs directly. The extended temperature grade to +125C supports under-hood deployment, while the 256 KB Flash and 32 KB RAM accommodate AUTOSAR-compliant application code with calibration tables.
推薦
Digital Power Factor Correction (PFC)
For boost PFC stages in industrial SMPS and telecom rectifiers, the DSPIC33EP256MC506-E/PT implements average-current-mode control at 70 MIPS with single-cycle MAC for the multiplier and divider operations required for the PFC control law. The high-speed PWM drives the boost MOSFET at 65-100 kHz, the on-chip OpAmps sense input and inductor currents, and the 12-bit ADC samples within the switching period to maintain >0.99 power factor. The 256 KB Flash stores firmware upgrades for varying AC line conditions worldwide.
推薦
High-Brightness LED Lighting Driver
The DSPIC33EP256MC506-E/PT drives high-brightness LED arrays using its six PWM channels for dimming and color mixing. The 70 MIPS DSP engine runs advanced dimming algorithms including logarithmic perceptual dimming curves, while the integrated OpAmps sense LED string current via high-side or low-side shunts. The CAN peripheral enables networked lighting control, and the extended temperature grade supports outdoor luminaire installations. The 32 KB RAM holds the color-mixing LUTs and smooth-transition state buffers.
推薦
推薦產品摘要
工程參考資料，適用於 DSPIC33EP256MC506-E/PT — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | DSPIC33EP256MC506-I/PT | DSPIC33EP512MC506-E/PT | DSPIC33EP256MC506-H/PT | DSPIC33EP256GP506-E/PT |
|---|---|---|---|---|---|
| Package | TQFP-64 (PT) | TQFP-64 (PT) | TQFP-64 (PT) | TQFP-64 (PT) | TQFP-64 (PT) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 256 KB | 256 KB | 512 KB | 256 KB | 256 KB |
| RAM | 32 KB | 32 KB | 48 KB | 32 KB | 32 KB |
| CPU Speed | 70 MIPS / 60 MHz | 70 MIPS / 60 MHz | 70 MIPS / 60 MHz | 70 MIPS / 60 MHz | 70 MIPS / 60 MHz |
| Temperature Grade | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) | -40C to +150C (H, AEC-Q100 Grade 1) | -40C to +125C (E) |
| On-chip OpAmps | 3 | 3 | 3 | 3 | 3 |
| Motor-Control PWM (MCPWM) | Yes (6 channels) | Yes (6 channels) | Yes (6 channels) | Yes (6 channels) | No (general-purpose PWM) |
| QEI Module | Yes | Yes | Yes | Yes | No |
| CAN 2.0B | Yes (1 channel) | Yes | Yes | Yes | Yes |
主要差異化特點
- Three integrated OpAmps eliminate external current-sense amplifiers (對比DSPIC33EP256GP506-E/PT)
- Dedicated Motor-Control PWM with 1 ns edge resolution (對比DSPIC33EP256GP506-E/PT)
- Extended temperature to +125C versus +85C for industrial variant (對比DSPIC33EP256MC506-I/PT)
- Doubles the Flash to 512 KB for complex algorithms (對比DSPIC33EP512MC506-E/PT)
設計說明
The DSPIC33EP256MC506-E/PT operates from a single 3.0-3.6 V supply on both VDD and AVDD pins. Place a 10 uF bulk capacitor plus a 0.1 uF ceramic decoupling cap adjacent to each VDD/AVDD pin pair. The VCAP pin (pin 19) must be bypassed with a low-ESR 4.7 uF capacitor to VSS to stabilize the internal 1.8 V core regulator; omitting this cap causes erratic behavior and core-voltage brown-out resets.
Route the analog signal traces (AN0-AN9, VREF+, VREF-) away from the high-speed PWM output traces to avoid capacitive coupling of switching noise into the ADC samples. Keep the crystal oscillator traces (OSC1, OSC2) within 5 mm of the IC and surround them with a ground pour. Place the OpAmp feedback resistors and capacitors as close as possible to the dedicated analog pins to minimize parasitic inductance that destabilizes the current-sense loop.
At 70 MIPS continuous operation with all peripherals active, the DSPIC33EP256MC506-E/PT in TQFP-64 (PT) dissipates approximately 0.6 W worst-case. The package thermal resistance theta_JA of approximately 50 C/W on a 4-layer JEDEC test board yields a 30C junction temperature rise above ambient at 25C. For designs in enclosed housings or near heat sources, calculate derating using theta_JA = 50 C/W and ensure junction temperature stays below +125C for the E-grade variant.
Three common pitfalls: (1) Enabling the on-chip OpAmps without first configuring the corresponding I/O pins as analog inputs causes shoot-through and erratic ADC readings - always set the ANSEL register before enabling the OpAmp module. (2) Programming the PWM duty cycle to 0% or 100% without enabling the complementary mode and dead-time generators can cause shoot-through in the inverter. (3) Exceeding the 1.1 Msps ADC throughput relative to the PWM frequency causes current-loop aliasing - rule of thumb: keep ADC sample rate at least 5x the PWM switching frequency.
For motor-control applications where the DSPIC33EP256MC506-E/PT reads shunt-resistor current, the analog ground (AVSS) and digital ground (VSS) must be joined at a single point near the MCU. Place a ferrite bead between AVDD and VDD if the analog supply enters the board separately. Use Kelvin connections to the shunt resistor and route the OpAmp inputs as differential pairs to reject common-mode noise from the switching node.
合規資訊
RoHS and REACH compliant per Microchip product page. Standard -E grade is NOT AEC-Q100 qualified; for AEC-Q100 Grade 1 (-40C to +150C) automotive deployment use the DSPIC33EP256MC506-H/PT variant.
