DSPIC33FJ64GP708A-I/PT - 16-bit 40 MIPS DSC 64KB Flash | Microchip
MPN: DSPIC33FJ64GP708A-I/PT ✓ Hoạt độngDSPIC33FJ64GP708A-I/PT Tóm tắt
A Digital Signal Controller blends the control peripherals of a microcontroller with the math acceleration of a DSP in a single chip. Within the power-management hierarchy of embedded processors, the dsPIC33FJ family sits between basic 16-bit MCUs (PIC24) and dedicated DSPs, offering DSP engine instructions, a hardware MAC, and seamless migration paths to PIC24H MCUs and dsPIC30F DSCs.
Key features include 40 MIPS core performance, 64 KB flash with self-programming capability, 16 KB SRAM, dual 4-wire SPI ports, two I2C ports, two UARTs, up to eight input capture and eight output compare channels, and a 5V-tolerant digital I/O structure. The A revision improves flash endurance and reliability over the original dsPIC33FJ64GP708.
Technically, the modified Harvard architecture executes most instructions in a single cycle, while the DSP engine performs single-cycle MAC with dual data fetch, 40-bit wide accumulators, and barrel shifting. Two 3-wire 16-bit program/ICSP interfaces (PGECx/PGEDx pairs) enable in-circuit debugging and programming via MPLAB ICD 3, REAL ICE, PICkit 3, or MPLAB Snap.
Typical applications include digital power supplies and PFC loops, motor control (BLDC, PMSM, induction), LED lighting drivers, and sensor acquisition systems. The 85-C industrial temperature range (I grade) covers most factory environments.
Design tip: all VDD/VSS pairs must be decoupled with 0.1 uF ceramics, and the VCAP/VDDCORE pin requires a low-ESR 10 uF capacitor plus a 0.1 uF bypass - omitting this is the most common bring-up failure.
This page synthesizes distributor pricing, verified drop-in alternatives, pinout data, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho DSPIC33FJ64GP708A-I/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với DSPIC33FJ64GP708A-I/PT (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature, Core Architecture, Packaging, Supply Voltage.
DSPIC33FJ128GP708A-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ256GP708A-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
DSPIC33FJ32GP708A-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
DSPIC33FJ64GP708A-E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ64GP708-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ64GP708A-I/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | 16-bit modified Harvard (DSC) |
| Core Speed | 40 MIPS |
| Program Memory (Flash) | 64 KB (22 Kwords) |
| SRAM | 16 KB |
| Operating Voltage | 3.0 V to 3.6 V |
| Nhiệt độ hoạt động | -40C to +85C (I grade) |
| Hộp | 80-pin TQFP (PT), 12 x 12 mm |
| Kiểu lắp đặt | Surface Mount |
| I/O Pins | Up to 66 digital I/O |
| ADC | 10-bit, 1.1 Msps, multi-channel |
| UART | 2 |
| SPI | 2 (4-wire) |
| I2C | 2 |
| Input Capture / Output Compare | 8 IC / 8 OC |
| Timers | Type A and Type B 16-bit timers |
| Debug/Programming | ICSP via PGECx/PGEDx pairs, 2-wire |
| DSP Engine | Single-cycle MAC, dual 40-bit accumulators |
| Supply Class | 3.3 V |
Cấu hình chân DSPIC33FJ64GP708A-I/PT
| Chân 1 | AN0/VREF+/CN2/RB0 — Analog input 0 / positive voltage reference / change notification / port B |
| Chân 2 | AN1/VREF-/CN3/RB1 — Analog input 1 / negative voltage reference / change notification / port B |
| Chân 3 | AN2/SS1/CN4/RB2 — Analog input 2 / SPI1 slave select / port B |
| Chân 4 | AN3/INDX/CN5/RB3 — Analog input 3 / QEA index input / port B |
| Chân 5 | AN4/QEA/IC7/CN6/RB4 — Analog input 4 / QEA encoder / input capture 7 / port B |
| Chân 6 | AN5/QEB/IC8/CN7/RB5 — Analog input 5 / QEB encoder / input capture 8 / port B |
| Chân 7 | AN6/OCFA/RB6 — Analog input 6 / output compare fault A / port B |
| Chân 7 | AN6/OCFA/RB6 — Analog input 6 / output compare fault A / port B |
| Chân 8 | AN7/PGD/RB7 — Analog input 7 / programming data / port B |
| Chân 9 | AN8/PGC/RB8 — Analog input 8 / programming clock / port B |
| Chân 10 | AN9/RB9 — Analog input 9 / port B |
| Chân 11 | VDD — Power supply 3.3V |
| Chân 12 | VSS — Ground reference |
| Chân 13 | AN10/T2CK/RC0 — Analog input 10 / Timer2 clock / port C |
| Chân 14 | AN11/T3CK/RC1 — Analog input 11 / Timer3 clock / port C |
| Chân 15 | AN12/U1RTS/SDO2/RC2 — Analog input 12 / UART1 RTS / SPI2 data out / port C |
| Chân 16 | AN13/U1CTS/SDI2/RC3 — Analog input 13 / UART1 CTS / SPI2 data in / port C |
| Chân 17 | PGD2/AN14/SCK2/CN9/RC4 — Programming data 2 / analog input 14 / SPI2 clock / port C |
| Chân 18 | PGC2/AN15/CN10/RC5 — Programming clock 2 / analog input 15 / port C |
| Chân 19 | VDD — Power supply 3.3V |
| Chân 20 | VSS — Ground reference |
| Chân 21 | TMS/RC6 — JTAG test mode select / port C |
| Chân 22 | TCK/RC7 — JTAG test clock / port C |
| Chân 23 | TDO/SDO1/RF1 — JTAG test data out / SPI1 data out / port F |
| Chân 24 | TDI/RF2 — JTAG test data in / port F |
| Chân 25 | U1RX/RF2 — UART1 receive / port F |
| Chân 26 | U1TX/RF3 — UART1 transmit / port F |
| Chân 27 | SDA2/RF4 — I2C2 data / port F |
| Chân 28 | SCL2/RF5 — I2C2 clock / port F |
| Chân 29 | VSS — Ground reference |
| Chân 30 | VDD — Power supply 3.3V |
| Chân 31 | SDA1/RF6 — I2C1 data / port F |
| Chân 32 | SCL1/RF7 — I2C1 clock / port F |
| Chân 33 | SCK1/RF8 — SPI1 clock / port F |
| Chân 34 | U2TX/RF10 — UART2 transmit / port F |
| Chân 35 | U2RX/RF11 — UART2 receive / port F |
| Chân 36 | RF12 — General purpose I/O port F |
| Chân 37 | RF13 — General purpose I/O port F |
| Chân 38 | SDI1/RF7 — SPI1 data in / port F (remappable) |
| Chân 39 | SS1/RF6 — SPI1 slave select / port F (remappable) |
| Chân 40 | RG0 — General purpose I/O port G |
| Chân 41 | RG1 — General purpose I/O port G |
| Chân 42 | VSS — Ground reference |
| Chân 43 | VDD — Power supply 3.3V |
| Chân 44 | OC1/RD0 — Output compare 1 / port D |
| Chân 45 | OC2/RD1 — Output compare 2 / port D |
| Chân 46 | OC3/RD2 — Output compare 3 / port D |
| Chân 47 | OC4/RD3 — Output compare 4 / port D |
| Chân 48 | OC5/RD4 — Output compare 5 / port D |
| Chân 49 | OC6/RD5 — Output compare 6 / port D |
| Chân 50 | OC7/RD6 — Output compare 7 / port D |
| Chân 51 | OC8/RD7 — Output compare 8 / port D |
| Chân 52 | VSS — Ground reference |
| Chân 53 | IC1/RD8 — Input capture 1 / port D |
| Chân 54 | IC2/RD9 — Input capture 2 / port D |
| Chân 55 | IC3/RD10 — Input capture 3 / port D |
| Chân 56 | IC4/RD11 — Input capture 4 / port D |
| Chân 57 | IC5/RD12 — Input capture 5 / port D |
| Chân 58 | IC6/RD13 — Input capture 6 / port D |
| Chân 59 | RTCC/RG2 — Real-time clock alarm / port G |
| Chân 60 | RG3 — General purpose I/O port G |
| Chân 61 | PGED3/RG4 — Programming data 3 / port G |
| Chân 62 | PGEC3/RG5 — Programming clock 3 / port G |
| Chân 63 | VDD — Power supply 3.3V |
| Chân 64 | VSS — Ground reference |
| Chân 65 | MCLR — Master clear reset (active low), programming mode entry |
| Chân 66 | RA0 — General purpose I/O port A |
| Chân 67 | RA1 — General purpose I/O port A |
| Chân 68 | PGED1/AN16/CN11/RA2 — Programming data 1 / analog input 16 / port A |
| Chân 69 | PGEC1/AN17/CN12/RA3 — Programming clock 1 / analog input 17 / port A |
| Chân 70 | VCAP/VDDCORE — Core voltage regulator output - requires 10 uF low-ESR capacitor to VSS |
| Chân 71 | OSC1/CLKI/RA2 — Oscillator crystal input / external clock input |
| Chân 72 | OSC2/CLKO/RA3 — Oscillator crystal output / clock output |
| Chân 73 | RA4 — General purpose I/O port A |
| Chân 74 | RA5 — General purpose I/O port A |
| Chân 75 | ENVREG — Voltage regulator enable - tie to VDD for internal regulator or to VSS for external 3.3V core supply |
| Chân 76 | VDD — Power supply 3.3V |
| Chân 77 | VSS — Ground reference |
| Chân 78 | RA9 — General purpose I/O port A |
| Chân 79 | RA10 — General purpose I/O port A |
| Chân 80 | AVDD — Analog power supply (3.3V) for ADC |
Ứng dụng tiêu biểu
DSPIC33FJ64GP708A-I/PT phù hợp cho 6 Áp dụngs: Digital Power Supplies, BLDC / PMSM Motor Control, LED Lighting Drivers, Industrial Data Acquisition and Sensor Hubs, Audio and Signal Processing Front Ends, Embedded Control and IoT Nodes.
Digital Power Supplies
The DSPIC33FJ64GP708A-I/PT fits digital SMPS and PFC control because its 40 MIPS core executes single-cycle MAC operations that close fast voltage and current loops with deterministic latency, while the 10-bit 1.1 Msps ADC samples the power stage synchronized to the PWM cycle. In a typical topology, ADC results trigger control-loop ISR execution and output compare/PWM peripherals drive the MOSFET gate stage, giving cycle-by-cycle current limiting in firmware. Because the entire 80-pin device runs from a 3.3V rail with 5V-tolerant inputs, it interfaces directly with common gate drivers and feedback dividers. The 64 KB flash accommodates multi-mode control (CCM, DCM, burst) plus compensation and fault management without external memory.
Được đề xuất
BLDC / PMSM Motor Control
For motor drives, the DSPIC33FJ64GP708A-I/PT provides eight output compare channels for six-step or sinusoidal commutation and eight input capture channels for hall-sensor or encoder feedback. The DSP engine executes Clarke and Park transforms for field-oriented control with single-cycle MAC throughput at 40 MIPS, allowing current loops running at 20 kHz switching to complete in a fraction of the PWM period. The 3.0V to 3.6V core interfaces to gate drivers through level-shifted logic, and the -40C to +85C industrial rating covers most drive enclosures. With 16 KB SRAM, sensorless algorithms with state observers fit without external RAM.
Được đề xuất
LED Lighting Drivers
In high-power LED systems, the DSPIC33FJ64GP708A-I/PT implements constant-current control, dimming (PWM and analog), color mixing, and DALI or DMX protocol handling concurrently. The eight output compare channels generate multi-channel dimming PWMs with hardware precision, while the 1.1 Msps ADC monitors output current, LED forward voltage, and temperature for protection. The 40 MIPS core has ample headroom to run communications protocols alongside the control loop on a single chip, replacing discrete MCU-plus-DSP solutions. Its 85C industrial rating suits enclosed luminaire drivers, and the 80-pin TQFP provides enough I/O for large multi-string fixtures.
Được đề xuất
Industrial Data Acquisition and Sensor Hubs
As a sensor hub, the DSPIC33FJ64GP708A-I/PT combines a multi-channel 10-bit ADC sampling up to 1.1 Msps with dual SPI and dual I2C ports for external precision ADCs, and dual UARTs for RS-485/Modbus field connectivity. The DSP engine performs windowed filtering and FFT-based diagnostics locally at 40 MIPS, reducing data traffic to a supervisory controller. Up to 66 general-purpose I/O pins on the 80-pin TQFP handle relay control, limit switches, and front-panel interfaces in one footprint. The -40C to +85C range and 3.3V operation with 5V-tolerant inputs simplify integration into legacy industrial signal chains.
Được đề xuất
Audio and Signal Processing Front Ends
The GP-family DSPIC33FJ64GP708A-I/PT serves audio and biomedical front ends where sampled signal processing is required: the dual 40-bit accumulators and single-cycle MAC execute FIR/IIR filters at 40 MIPS, while dual SPI ports stream data to external audio codecs or SD/SD-card storage. The 1.1 Msps ADC covers instrumentation channels, and eight input capture channels timestamp event signals for acoustic analytics. With 64 KB flash and 16 KB SRAM, complete filter banks and protocol stacks reside on chip. The single 3.3V rail and low peripheral count reduce BOM cost compared to a DSP-plus-MCU two-chip solution.
Được đề xuất
Embedded Control and IoT Nodes
For general embedded control and connected nodes, the DSPIC33FJ64GP708A-I/PT offers a balanced profile: 40 MIPS of headroom for protocol stacks (Modbus, CAN via external transceiver, or software-defined serial), 64 KB flash for bootloader plus application, and rich timers for scheduling and measurement. ICSP debugging through MPLAB Snap or REAL ICE keeps development fast, and seamless migration to PIC24H or higher-density dsPIC33FJ parts protects the PCB investment as requirements grow. The 80-pin TQFP with 66 I/O lines handles HMI buttons, displays, and actuators directly, making it a cost-effective single-chip controller for industrial IoT gateways and equipment controllers.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho DSPIC33FJ64GP708A-I/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | DSPIC33FJ128GP708A-I/PT | DSPIC33FJ256GP708A-I/PT | DSPIC33FJ32GP708A-I/PT | DSPIC33FJ64GP708A-E/PT | DSPIC33FJ64GP708-I/PT |
|---|---|---|---|---|---|---|
| Package | 80-pin TQFP (PT), 12 x 12 mm | 80-pin TQFP (PT) - same | 80-pin TQFP (PT) - same | 80-pin TQFP (PT) - same | 80-pin TQFP (PT) - same | 80-pin TQFP (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Flash Memory | 64 KB | 128 KB | 256 KB | 32 KB | 64 KB | 64 KB |
| Operating Temperature | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +125C (E) | -40C to +85C (I) |
| Silicon Revision | A revision (improved) | A revision | A revision | A revision | A revision | Original (non-A) |
| Communication Ports | 2x UART, 2x SPI, 2x I2C | 2x UART, 2x SPI, 2x I2C | 2x UART, 2x SPI, 2x I2C | 2x UART, 2x SPI, 2x I2C | 2x UART, 2x SPI, 2x I2C | 2x UART, 2x SPI, 2x I2C |
| Lifecycle Status | Active | Active | Active | Active | Active | Active (superseded by A version) |
Bảo phân biệt quan trọng
- Best price/performance in the GP708A family for 64 KB designs (vsDSPIC33FJ128GP708A-I/PT)
- A-revision silicon reliability (vsDSPIC33FJ64GP708-I/PT)
- Extended temperature availability in same footprint (vsDSPIC33FJ64GP708A-E/PT)
- DSC capability vs plain MCU alternatives (vsPIC24HJ64GP504-I/PT (functional alternative, different package))
Ghi chú thiết kế
The dsPIC33FJ64GP708A integrates an on-chip 3.3V-to-1.8V core regulator whose output appears on the VCAP/VDDCORE pin. Fit a low-ESR 10 uF tantalum or ceramic plus a 0.1 uF ceramic capacitor directly at this pin. If ENVREG is tied to VDD the regulator is enabled; tying ENVREG to VSS disables it, requiring an external clean core supply. All VDD/VSS pairs (multiple around the 80-pin ring) each need their own 0.1 uF decoupling capacitor placed within 2-3 mm of the pin.
ICSP programming uses PGECx/PGEDx pin pairs - the device has multiple pairs (PGEC1/PGED1, PGEC2/PGED2, PGEC3/PGED3), and the clock and data must come from the SAME pair; mixing PGEC2 with PGED1 will fail programming. Do not load PGECx/PGEDx pins with heavy capacitive loads or pull-downs that could violate ICSP timing. Also note the original dsPIC33FJ64GP708 (non-A) is documented by third parties as having very low flash endurance (guaranteed only ~100 erase/write cycles), another reason to standardize on the A revision.
For motor control and digital power firmware, route PWM outputs (OC1-OC8 on port D) away from analog inputs AN0-AN16 and keep AVDD (pin 80) filtered with an RC (e.g., 10 ohm + 0.1 uF) from VDD to supply a quiet analog rail. The QEA/QEB/INDX quadrature pins on RB3-RB5 should be treated as fast digital signals with short returns. Use a solid ground plane under the TQFP and stitch VSS vias near each VSS pin for low-inductance return paths.
Estimated: at 40 MIPS with all peripherals active, core current is typically on the order of tens of mA from 3.3V, giving power dissipation well under 0.5 W in the 12 x 12 mm TQFP; theta_JA of a standard 4-layer board keeps junction rise below 25C at 85C ambient, comfortably within the I-grade rating. For high-pin-count I/O switching at full drive, verify with Microchip power estimation tools, but heatsinking is not required for this device class.
Thông tin tuân thủ
Standard Microchip catalog device in lead-free TQFP package; RoHS/REACH statements per Microchip product page for this MPN. Not an automotive AEC-Q100 qualified part.