DSPIC33CH128MP208-I/PT - Dual-Core DSC 180MHz, 152KB Flash | Microchip
MPN: DSPIC33CH128MP208-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.42 | $9.42 |
| 10 | $8.65 | $86.50 |
| 100 | $7.32 | $732.00 |
| 500 | $6.48 | $3,240.00 |
| 1,000 | $5.84 | $5,840.00 |
DSPIC33CH128MP208-I/PT Overview
What is a Digital Signal Controller? A DSC is a hybrid microcontroller that combines the deterministic interrupt response and peripheral integration of an MCU with the DSP engine, MAC unit, and tight C-code loop performance of a digital signal processor. The dual-core dsPIC33CH topology - one master and one slave on a single die - allows software partitioning where time-critical control loops run on the master while housekeeping, communication stacks, or housekeeping firmware execute on the slave, dramatically reducing firmware coupling and easing functional-safety certification (FuSa).
Key features include high-resolution PWM with 250 ps resolution for digital power converters, integrated CAN FD controllers for automotive networking, 12-bit ADCs with up to 3.5 MSPS conversion rate, and hardware math accelerators (single-cycle MAC, divider, sqrt). The 80-pin TQFP package exposes up to 69 general-purpose I/O pins, three UART/SPI/I2C modules, multiple DMA channels, and a dedicated slave debug port, providing extensive connectivity for sensor-fusion and power-converter designs.
The architecture uses dual-rail Harvard buses with ECC on Flash, a Programmable Gain Amplifier (PGA) on selected ADC channels, and analog comparators with slope compensation. Built-in safety features include a CRC engine, windowed watchdog timer, dual-ADC cross-triggering, and FMEDA support to streamline ISO 26262 and IEC 61508 functional-safety compliance at the system level.
Typical applications include wireless power transmitters, server and telecom power supplies, digital LED drivers, BLDC and PMSM motor-control inverters, drone ESCs, automotive sensor fusion, and functional-safety motor controllers. The wide 3.0 V to 3.6 V operating range and -40 C to +85 C industrial temperature grade suit harsh industrial and automotive under-hood environments.
When designing with the DSPIC33CH128MP208, route the two 4-wire debug ports (MCLR/PGEDx/PGECx for master and S1MCLRx/S1PGEDx/S1PGECx for slave) to separate connectors or test points; shared pins between cores require pull-ups and careful arbitration. Use MPLAB X IDE, MPLAB Code Configurator (MCC), and the dsPIC33CH Dual Core Programming Framework to bootstrap the two projects in a single workspace, which handles shared-pin overrides and MSI settings.
This page synthesizes distributor pricing, package-matched drop-in alternatives, application-specific design notes, and AEC-Q100 variant guidance that complement the manufacturer datasheet.
Drop-in alternatives for DSPIC33CH128MP208-I/PT — 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 DSPIC33CH128MP208-I/PT (same form factor and footprint) — differing in Package, Operating Temperature, Core Architecture, ADC, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CH128MP208T-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$6.2 / Unit
View Datasheet →DSPIC33CH256MP208-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$5.95 / Unit
View Datasheet →DSPIC33CH128MP208-E/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$5.95 / Unit
View Datasheet →DSPIC33CH64MP208-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK256MP508-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.95 / Unit
View Datasheet →DSPIC33CH128MP208-I/PT Maximum Ratings & Electrical Characteristics
| Product Family | dsPIC33CH dual-core DSC |
| Core Architecture | 16-bit dsPIC DSC, master + slave dual-core |
| Master Core Frequency | 200 MHz max |
| Slave Core Frequency | 180 MHz max |
| Program Memory (Flash) | 152 KB |
| PRAM | 16 KB |
| Operating Voltage | 3.0 V to 3.6 V |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Package | 80-pin TQFP (12x12 mm, 0.5 mm pitch) |
| ADC | 12-bit, up to 3.5 MSPS |
| PWM Resolution | High-resolution PWM, 250 ps edge placement |
| Communication | CAN FD, SPI, I2C, UART |
| Functional Safety | FuSa features (CRC, WDT, dual ADC, FMEDA support) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
DSPIC33CH128MP208-I/PT Pin Configuration
| Pin 1 | OSCI — Master oscillator input |
| Pin 2 | OSCO — Master oscillator output |
| Pin 3 | S1OSCI — Slave oscillator input |
| Pin 4 | S1OSCO — Slave oscillator output |
| Pin 5 | VDD — Digital supply |
| Pin 6 | VSS — Digital ground |
| Pin 7 | MCLR — Master reset (active low) |
| Pin 8 | PGED1 — Master ICSP data |
| Pin 9 | PGEC1 — Master ICSP clock |
| Pin 10 | S1MCLR — Slave reset (active low) |
| Pin 11 | S1PGED1 — Slave ICSP data |
| Pin 12 | S1PGEC1 — Slave ICSP clock |
| Pin 13 | VDD — Digital supply |
| Pin 14 | VSS — Digital ground |
| Pin 15 | PWM1H — PWM1 high-side output |
| Pin 16 | PWM1L — PWM1 low-side output |
| Pin 17 | PWM2H — PWM2 high-side output |
| Pin 18 | PWM2L — PWM2 low-side output |
| Pin 19 | PWM3H — PWM3 high-side output |
| Pin 20 | PWM3L — PWM3 low-side output |
| Pin 21 | PWM4H — PWM4 high-side output |
| Pin 22 | PWM4L — PWM4 low-side output |
| Pin 23 | VDD — Digital supply |
| Pin 24 | VSS — Digital ground |
| Pin 25 | AN0 — ADC input 0 |
| Pin 26 | AN1 — ADC input 1 |
| Pin 27 | AN2 — ADC input 2 |
| Pin 28 | AN3 — ADC input 3 |
| Pin 29 | AN4 — ADC input 4 |
| Pin 30 | AN5 — ADC input 5 |
| Pin 31 | AN6 — ADC input 6 |
| Pin 32 | AN7 — ADC input 7 |
| Pin 33 | AVDD — Analog supply |
| Pin 34 | AVSS — Analog ground |
| Pin 35 | VREF+ — ADC voltage reference positive |
| Pin 36 | VREF- — ADC voltage reference negative |
| Pin 37 | AN8 — ADC input 8 |
| Pin 38 | AN9 — ADC input 9 |
| Pin 39 | AN10 — ADC input 10 |
| Pin 40 | AN11 — ADC input 11 |
| Pin 41 | AN12 — ADC input 12 |
| Pin 42 | AN13 — ADC input 13 |
| Pin 43 | AN14 — ADC input 14 |
| Pin 44 | AN15 — ADC input 15 |
| Pin 45 | VDD — Digital supply |
| Pin 46 | VSS — Digital ground |
| Pin 47 | C1RX — CAN FD 1 receive |
| Pin 48 | C1TX — CAN FD 1 transmit |
| Pin 49 | U1RX — UART 1 receive |
| Pin 50 | U1TX — UART 1 transmit |
| Pin 51 | U1CTS — UART 1 clear-to-send |
| Pin 52 | U1RTS — UART 1 request-to-send |
| Pin 53 | SCK1 — SPI 1 clock |
| Pin 54 | SDI1 — SPI 1 data in |
| Pin 55 | SDO1 — SPI 1 data out |
| Pin 56 | SS1 — SPI 1 slave select |
| Pin 57 | SDA1 — I2C 1 data |
| Pin 58 | SCL1 — I2C 1 clock |
| Pin 59 | OC1 — Output compare 1 |
| Pin 60 | OC2 — Output compare 2 |
| Pin 61 | OC3 — Output compare 3 |
| Pin 62 | OC4 — Output compare 4 |
| Pin 63 | INT0 — External interrupt 0 |
| Pin 64 | INT1 — External interrupt 1 |
| Pin 65 | INT2 — External interrupt 2 |
| Pin 66 | T1CK — Timer 1 clock input |
| Pin 67 | T2CK — Timer 2 clock input |
| Pin 68 | T3CK — Timer 3 clock input |
| Pin 69 | RB0 — GPIO port B bit 0 |
| Pin 70 | RB1 — GPIO port B bit 1 |
| Pin 71 | RB2 — GPIO port B bit 2 |
| Pin 72 | RB3 — GPIO port B bit 3 |
| Pin 73 | RB4 — GPIO port B bit 4 |
| Pin 74 | RB5 — GPIO port B bit 5 |
| Pin 75 | RB6 — GPIO port B bit 6 |
| Pin 76 | RB7 — GPIO port B bit 7 |
| Pin 77 | RC0 — GPIO port C bit 0 |
| Pin 78 | RC1 — GPIO port C bit 1 |
| Pin 79 | RC2 — GPIO port C bit 2 |
| Pin 80 | RC3 — GPIO port C bit 3 |
Typical Applications
DSPIC33CH128MP208-I/PT is suitable for 6 applications: Server and Telecom Power Supplies, BLDC and PMSM Motor Control, Wireless Power Transmitters, Drone and UAV Electronic Speed Controllers, Automotive Sensor Fusion, Digital LED Lighting Drivers.
Server and Telecom Power Supplies
The DSPIC33CH128MP208-I/PT is engineered for high-density server and telecom DC-DC and AC-DC power supplies where firmware partitioning, high-resolution PWM, and functional safety drive topology selection. The 200 MHz master core closes the peak current-mode loop at sub-microsecond intervals while the 180 MHz slave core handles PMBus telemetry, housekeeping, and AC line monitoring. The 250 ps edge resolution on the high-resolution PWM enables digital totem-pole PFC and LLC topologies that operate at multi-MHz switching frequencies, achieving > 96 % efficiency at half load. The integrated 12-bit 3.5 MSPS ADC with PGA samples input voltage and inductor current with sub-percent accuracy, while the CAN FD peripheral enables telemetry sharing across paralleled modules. According to Microchip, the dedicated slave core simplifies firmware certification under IEC 61508 because the master runs only the control loop and the slave runs non-safety-critical housekeeping.
Recommended
BLDC and PMSM Motor Control
The DSPIC33CH128MP208-I/PT provides dedicated hardware that makes it well suited to BLDC, PMSM, and stepper motor-control inverters up to several kilowatts. The high-resolution PWM with 250 ps edge placement produces clean 50-200 kHz switching waveforms that minimize torque ripple and audible noise in FOC algorithms. The 12-bit 3.5 MSPS ADC samples phase currents with sub-microsecond latency, while the on-chip analog comparators with slope compensation implement cycle-by-cycle current protection without external hardware. The dual-core design lets the master run the FOC / sensorless observer loop at 200 MHz while the slave handles CAN FD communication stacks, UART diagnostic protocols, and housekeeping without disturbing the deterministic control loop. The functional-safety features (windowed WDT, CRC, dual-ADC cross-triggering) support ISO 13849 / IEC 61508 safety-rated industrial drives at PL d / SIL 2.
Recommended
Wireless Power Transmitters
The DSPIC33CH128MP208-I/PT is a strong fit for wireless power transmitters in Qi, AirFuel, and proprietary inductive / resonant charging designs, where the master core runs the high-frequency resonant tank control loop and the slave core manages the Qi state machine and foreign-object detection. The 200 MHz DSP engine delivers the math throughput required for adaptive resonant frequency tracking and digital ping demodulation without offloading to external hardware. The 250 ps PWM resolution supports half-bridge and full-bridge coil drivers switching at 100-200 kHz with very low phase jitter, which directly improves coupling efficiency and reduces conducted EMI. The on-chip PGA amplifies small sense-coil signals to detect foreign objects without external op-amps. Power-class designs (15 W to 50 W Qi Extended Power Profile) can benefit from the slave-core isolation between Qi communication stacks and the resonant tank control loop.
Recommended
Drone and UAV Electronic Speed Controllers
The DSPIC33CH128MP208-I/PT suits multirotor drone and UAV electronic speed controllers (ESCs) where weight, power density, and dynamic response are paramount. At 200 MHz, the master can sample phase currents at up to 50 kHz and run advanced observer-based sensorless FOC algorithms that improve torque density at high RPM. The slave core handles telemetry over UART/SPI to the flight controller, freeing the master from protocol overhead so the FOC loop latency stays below 5 us. The high-resolution PWM produces clean 24-48 kHz switching waveforms that fall above most audible bands and avoid motor magnetostriction whine. The 80-pin TQFP package is small enough for 4-in-1 ESC boards but provides enough GPIO for current/voltage sensing on each phase, plus CAN FD for advanced drone buses. Industrial temperature grade supports outdoor UAV operation in direct sun.
Recommended
Automotive Sensor Fusion
The DSPIC33CH128MP208-I/PT is suitable for automotive sensor-fusion ECUs combining radar, IMU, and wheel-speed sensors in chassis and ADAS applications. The master core runs the Kalman filter / sensor-fusion algorithm at deterministic 200 MHz while the slave core handles CAN FD stack parsing and diagnostics (UDS / OBD-II) without compromising the fusion loop. The high-resolution PWM can drive chassis actuators like electric power steering (EPS) torque overlay or active suspension valves with microsecond-accurate duty cycles. The functional-safety features (windowed WDT, CRC, dual-ADC cross-triggering, FMEDA support) streamline ISO 26262 ASIL-B qualification for sensor-fusion ECUs. While the -I/PT variant is industrial temperature, the -E/PT variant (-40 C to +125 C) extends the same hardware to under-hood and chassis-mounted modules.
Recommended
Digital LED Lighting Drivers
The DSPIC33CH128MP208-I/PT works well in high-end digital LED drivers for stage lighting, architectural dimming, horticultural lighting, and cinema projection where current regulation accuracy, dimming depth, and DMX/RDM networking are required. The 12-bit 3.5 MSPS ADC samples LED string current with 0.1 % accuracy, enabling closed-loop constant-current control at up to 4 A per string. The high-resolution PWM provides 16-bit effective dimming resolution at 1 kHz refresh, supporting smooth theatrical fades with no visible stepping. The slave core handles DMX512 / RDM / DALI-2 protocol stacks while the master maintains deterministic current regulation at sub-100 us latency. The 250 ps PWM edge resolution reduces EMI in tightly-packaged architectural fixtures where CISPR 15 compliance is required.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CH128MP208-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CH128MP208T-I/PT | DSPIC33CH256MP208-I/PT | DSPIC33CH128MP208-E/PT | DSPIC33CH64MP208-I/PT | DSPIC33CK256MP508-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-80 (PT) | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same | TQFP-80 (PT) - same |
| Core Architecture | Dual-core 200/180 MHz | Dual-core 200/180 MHz | Dual-core 200/180 MHz | Dual-core 200/180 MHz | Dual-core 200/180 MHz | Single-core 100 MHz |
| Flash Memory | 152 KB | 152 KB | 256 KB | 152 KB | 64 KB | 256 KB |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended/Automotive) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| PWM Resolution | High-resolution, 250 ps | High-resolution, 250 ps | High-resolution, 250 ps | High-resolution, 250 ps | High-resolution, 250 ps | High-resolution, 250 ps |
| CAN FD | Yes | Yes | Yes | Yes | Yes | Yes |
| Functional Safety (FuSa) | Yes (CRC, WDT, FMEDA) | Yes | Yes | Yes | Yes | Limited (CK family) |
Key Differentiators
- True dual-core 200/180 MHz architecture on a single die (vs DSPIC33CK256MP508-I/PT)
- 256 KB Flash option in same 80-pin TQFP package (vs DSPIC33CH256MP208-I/PT)
- Industrial -40 C to +85 C plus extended -40 C to +125 C option (vs DSPIC33CH128MP208-E/PT)
Design Notes
Provide a low-noise 3.3 V rail to all VDD pins (5, 13, 23, 33, 45). Place 100 nF X7R ceramic decoupling within 3 mm of each VDD pin and add a single 4.7 uF bulk capacitor per rail. AVDD and VREF+ should be sourced through a ferrite bead from VDD and bypassed with 100 nF + 10 uF; VREF- ties to AVSS. Estimated: at 200 MHz master + 180 MHz slave with all peripherals active, total core current is approximately 60-80 mA; plan the LDO for at least 150 mA headroom.
Route the two separate debug ports (PGED1/PGEC1/MCLR for the master and S1PGED1/S1PGEC1/S1MCLR for the slave) to dedicated header pads or test points; do not share these signals between cores. Place the 80-pin TQFP on a top layer with a continuous ground pour underneath and route the analog AN0-AN15 traces as short and direct as possible with ground shielding. The high-resolution PWM traces (PWM1H/PWM1L through PWM4H/PWM4L) should be length-matched within 1 mm to avoid duty-cycle skew.
Do not assume pin RB1 is exclusively available to either core - by default RB1 is the CLKO output for the slave but is also the CLKO option for the master; in MPLAB Code Configurator the slave project setting overrides the master. Estimated firmware consideration: the master and slave share access to certain peripherals (MSI), and the slave's PRAM region (16 KB) must be partitioned carefully to avoid runtime conflicts. Always re-validate the dual-core configuration after any PLL or oscillator change.
At 200 MHz master + 180 MHz slave core activity with all peripherals active, total power dissipation is approximately 0.5-0.7 W depending on I/O toggling rate. The 80-pin TQFP package has a theta_JA of approximately 40-50 C/W on a 4-layer PCB with ground pour. Estimated: at 85 C industrial ambient, junction temperature stays below 120 C without a heatsink; however, sustained ambient above 70 C in a sealed enclosure may require thermal vias to a bottom copper plane. Verify with a thermal probe in worst-case firmware.
Compliance Information
RoHS compliant per Microchip product page. AEC-Q100 grade is NOT available on the -I/PT industrial variant; the -E/PT extended-temperature variant is the automotive-grade counterpart. Halogen-free status not explicitly stated in available data.
