DSPIC33FJ128GP310T-I/PF - 16-bit 40 MIPS DSC 128KB | Microchip
MPN: DSPIC33FJ128GP310T-I/PF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.95 | $8.95 |
| 10 | $8.15 | $81.50 |
| 100 | $7.3 | $730.00 |
| 500 | $6.6 | $3,300.00 |
| 1,000 | $5.95 | $5,950.00 |
DSPIC33FJ128GP310T-I/PF Overview
A Digital Signal Controller (DSC) combines the computational throughput of a Digital Signal Processor (DSP) with the peripheral integration and control-oriented architecture of a microcontroller. In the power-management hierarchy, a DSC sits between general-purpose MCUs and dedicated DSPs, making the dsPIC33F family a common choice for embedded control systems that also need multiply-accumulate (MAC) DSP instructions for filtering, transforms, and control-loop math.
Key features of this part include the 16-bit dsPIC33F core running at up to 40 MIPS, 128KB of self-programmable FLASH, and 16KB of SRAM. Connectivity is comprehensive: I2C, SPI, UART/USART, IrDA, and LINbus interfaces allow direct attachment of sensors, memory, and communication transceivers. The General Purpose (GP) variant carries advanced analog and high-speed PWM-capable peripherals suited to mixed-signal applications.
Architecturally, the dsPIC33F uses a modified Harvard pipeline with DSP engine support, deterministic interrupt handling, and a flexible clock system tolerant of the 3V to 3.6V supply range. Interrupt latency and cycle-count determinism make it suitable for closed-loop control where timing jitter directly affects system performance.
Typical applications include industrial automation, motor-control and inverter systems, digital power supplies, sensor signal conditioning, and embedded communication nodes using LINbus or UART links.
Design consideration: budget the 3.3V rail carefully - the absolute supply window is 3.0V to 3.6V, so a well-regulated LDO or buck output with adequate decoupling is required; also verify GPIO allocation because 51 I/O pins must cover all peripheral multiplexing needs.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single citeable reference for selection and second-sourcing.
Drop-in alternatives for DSPIC33FJ128GP310T-I/PF — 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 DSPIC33FJ128GP310T-I/PF (same form factor and footprint) — differing in Package, Packaging, RoHS Status, Series, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ128GP310A-I/PF
✅ Drop-In✓ In Stock
$5.7 / Unit
View Datasheet →DSPIC33FJ128GP310-I/PF
✅ Drop-In✓ In Stock
$4.48 / Unit
View Datasheet →DSPIC33FJ128GP310T-I/PT
✅ Drop-In✓ In Stock
$5.46 / Unit
View Datasheet →DSPIC33FJ128GP310ATE/PF
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ128GP310T-I/PF Maximum Ratings & Electrical Characteristics
| Core | 16-bit dsPIC33F |
| Max CPU Speed | 40 MIPS |
| Program Memory Size | 128KB (128K x 8) FLASH |
| RAM Size | 16KB |
| Supply Voltage Range | 3 V to 3.6 V |
| Number of I/O | 51 |
| Connectivity | I2C, SPI, UART/USART, IrDA, LINbus |
| Package | 100-TQFP (14 x 14 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (I grade) |
| Series | dsPIC33FJ128GP (GP - General Purpose) |
| Packaging | Tape & Reel (T suffix) |
| RoHS Status | unknown |
DSPIC33FJ128GP310T-I/PF 100-tqfp (14 x 14 mm) Pin Configuration Guide
Pin configuration for DSPIC33FJ128GP310T-I/PF (100-tqfp (14 x 14 mm) 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 DSPIC33FJ128GP310T-I/PF.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ128GP310T-I/PF is suitable for 6 applications: Industrial Automation and Control, Digital Power Supplies and Converters, Motor Control and Drives, Embedded Communication Nodes, Sensor Signal Acquisition and Conditioning, Portable and Battery-Powered Instruments.
Industrial Automation and Control
The DSPIC33FJ128GP310T-I/PF fits industrial automation nodes that need both deterministic control and rich connectivity. Its 16-bit core at 40 MIPS executes PLC-style scan loops, PID regulators, and DSP filtering concurrently, while the -40C to +85C industrial temperature grade survives panel and floor environments. The 51 I/O pins accommodate limit switches, relays, and encoder inputs across multiple ports, and the 100-pin TQFP gives room for parallel peripheral mapping. I2C and SPI buses attach HMI controllers, EEPROM, and ADCs; UART links supervisory SCADA gateways. Because the dsPIC33F architecture is cycle-deterministic, scan time remains predictable under worst-case interrupt load, a key advantage over interrupt-jitter-prone general-purpose MCUs in timing-critical factory equipment.
Recommended
Digital Power Supplies and Converters
Digital switch-mode power supplies, inverters, and PFC stages benefit directly from this DSC's 40 MIPS throughput and dsPIC33F DSP engine. Multiply-accumulate instructions compute compensation filters and control-loop math in fixed cycle counts, allowing switching frequencies in the tens of kilohertz with per-cycle current-mode control. The GP variant's high-speed PWM and advanced analog peripherals support complementary PWM outputs with dead-time control, while the 12-bit-class ADC feedback path samples voltage and current for the control loop. The 3V to 3.6V supply domain keeps the digital core isolated from power stages through optocouplers or digital isolators on the UART/SPI links. Family members such as the DSPIC33FJ06GS series are purpose-built GS variants for pure digital-power designs requiring fewer general-purpose peripherals.
Recommended
Motor Control and Drives
BLDC, PMSM, and ACIM drives require field-oriented control executed within a fixed PWM period, which the DSPIC33FJ128GP310T-I/PF handles comfortably at 40 MIPS. FOC involves Clarke/Park transforms, PI current loops, and SVPWM generation - all heavy in MAC operations that the dsPIC33F DSP engine performs in single-cycle instructions. The 51 I/O and multiple PWM-capable pins drive three-phase inverter gate stages, while quadrature-encoder or sensorless-observer feedback is processed through the ADC and comparator peripherals. LINbus and UART interfaces integrate the drive into higher-level machine networks for speed commands and fault reporting. The industrial -40C to +85C rating matches drive enclosure conditions, and the 100-pin TQFP supports full-featured drives with braking, fan, and protection I/O.
Recommended
Embedded Communication Nodes
With I2C, SPI, UART/USART, IrDA, and LINbus on board, this controller serves as a protocol-bridging communication node in vehicles, building systems, and industrial networks. A common topology uses LINbus toward the field bus while UART connects a cellular or radio modem, with SPI-attached flash storing buffering data. The 16KB SRAM holds dual protocol stacks and message queues, and 128KB FLASH retains firmware plus protocol tables. Hardware LINbus support offloads framing and error handling from software, improving worst-case latency. Because all interfaces are hardware-mapped onto the 51 available I/O pins, designers can run multiple independent channels concurrently - for example, a LIN master, a debug UART, and an I2C sensor cluster - without bit-banging overhead that would consume the 40 MIPS budget.
Recommended
Sensor Signal Acquisition and Conditioning
The dsPIC33FJ GP family combines advanced analog peripherals with DSP capability, making the DSPIC33FJ128GP310T-I/PF a strong single-chip front end for sensor systems. Analog inputs from pressure, temperature, or current sensors feed the on-chip ADC; DSP instructions then run IIR/FIR filters, RMS computations, and FFT-based diagnostics at 40 MIPS, replacing an external DSP or FPGA. Results transmit over I2C or SPI to a host, or trigger local alarms via GPIO. The 100-pin TQFP leaves ample I/O for multiplexed sensor arrays, and the 128KB FLASH stores calibration tables per channel. The -40C to +85C grade supports outdoor and industrial sensing installations, and deterministic ADC-to-computation timing preserves phase relationships in multi-channel vibration or power-quality monitoring systems.
Recommended
Portable and Battery-Powered Instruments
Handheld test tools, meters, and logging instruments benefit from this DSC's balance of compute and integration. At 3.3V operation with a 3V to 3.6V supply window, a single-cell lithium or three-cell alkaline rail feeds the controller through a compact LDO, and the 16-bit core at 40 MIPS handles display updates (SPI/I2C), keypad scanning, and measurement DSP such as true-RMS math without an external processor. The 51 I/O pins drive segment LCDs, indicators, and chargers, while IrDA provides cable-free data upload to PCs - a feature legacy instrument designs still require. The 128KB FLASH supports feature-rich menu firmware plus a bootloader for field updates over UART. Designers should duty-cycle clocks, since the TQFP-100 device is not specifically ultra-low-power, to maximize battery life in portable use.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ128GP310T-I/PF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ128GP310A-I/PF | DSPIC33FJ128GP310-I/PF | DSPIC33FJ128GP310T-I/PT | DSPIC33FJ128GP310ATE/PF |
|---|---|---|---|---|---|
| Package | 100-TQFP (14x14) | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP thin - same footprint | 100-TQFP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Performance | 16-bit dsPIC33F, 40 MIPS | 16-bit dsPIC33F, 40 MIPS | 16-bit dsPIC33F, 40 MIPS | 16-bit dsPIC33F, 40 MIPS | 16-bit dsPIC33F, 40 MIPS |
| FLASH Memory | 128KB (128K x 8) | 128KB | 128KB | 128KB | 128KB |
| RAM | 16KB | 16KB | 16KB | 16KB | 16KB |
| Supply Voltage | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V |
| Operating Temperature | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +125C (E) |
Key Differentiators
- Established 40 MIPS 16-bit DSC with DSP engine (vs PIC18F14K22-I/SS)
- A-revision silicon available as pin-compatible drop-in (vs DSPIC33FJ128GP310-I/PF)
- Five hardware connectivity interfaces on one chip (vs DSPIC33FJ128GP310T-I/PT)
Design Notes
Design a tightly regulated 3.3V rail: the DSPIC33FJ128GP310T-I/PF accepts only 3V to 3.6V. Estimated: a 500 mA load budget (core plus I/O plus peripheral current) through an LDO dropping 5V to 3.3V dissipates about 0.85 W, so prefer a buck converter above roughly 100 mA sustained load. Decouple every VDD/VSS pin pair with 0.1 uF ceramics placed within 2 mm of the pins, and add bulk 10 uF near the device. Consult the Microchip dsPIC33FJ family datasheet power-section guidelines and reference designs in the family reference manual for exact per-pin decoupling requirements.
Verify errata before committing the non-A silicon: the DSPIC33FJ128GP310 (non-A) has published errata documents listed on the Microchip product page, and the DSPIC33FJ128GP310A revision addresses known issues. If your board layout is already fixed, the A-version is pin-compatible and generally the safer choice for new builds. Also check Peripheral Pin Select constraints in the datasheet - not all 51 I/O pins can map to any peripheral, so confirm your pin budget early in schematic capture to avoid a costly respin.
For the 100-TQFP (0.5 mm pitch) footprint, use a solder-mask-defined pad per IPC-compatible footprint generators and inspect with X-ray or AOI due to fine-pitch leads. Keep the crystal/oscillator traces short and guard them with ground pour to minimize jitter on the 40 MIPS system clock. Route LINbus and UART lines away from switching nodes in motor-control layouts; if the board includes a power stage, separate analog ADC reference grounds from power grounds with a single-point star connection to protect ADC accuracy.
At 40 MIPS, the dsPIC33FJ toggling I/O can generate edges fast enough to cause ringing on long un-terminated lines. Estimated: keep un-terminated SPI/I2C traces under 10 cm at this device class, or add 22 to 33 ohm series termination on clock lines. For IrDA and LINbus transceivers, follow Microchip's family reference manual recommended external networks - LIN requires the specified bus pull-up and clamp diodes to meet network timing and ESD expectations.
Compliance Information
Compliance status was not stated in the retrieved distributor listings or Microchip snippets for this exact ordering code; verify on the Microchip product page environmental section or via distributor certificate of conformance.
