DSPIC33CH64MP503-E/M5 - Dual-Core 16-bit DSC | Microchip
MPN: DSPIC33CH64MP503-E/M5 ✓ Active| Qty | Unit Price | Extended |
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DSPIC33CH64MP503-E/M5 Overview
A Digital Signal Controller combines the compute architecture of a microcontroller with the arithmetic throughput of a digital signal processor. Within the power-management IC hierarchy, the dsPIC33CH family sits above single-core dsPIC33C devices, pairing a master dsPIC DSC core with an independent slave DSC core in a single chip so that control loops and supervisory/user-interface tasks can be physically partitioned.
Key features include the asymmetric dual-core architecture (master core for general control, slave core tuned for single-cycle DSP math and tightly timed loops), a high-resolution PWM peripheral suited to power conversion, and a CAN FD module for modern automotive and industrial networking. Program memory uses a 24-bit instruction width, and the device integrates 20,480 words of on-chip data RAM.
The master/slave split lets developers isolate safety-critical or timing-critical code on the slave core while the master core handles communication, housekeeping and protocol stacks. Inter-core communication is supported through dedicated mailbox registers, and both cores can be programmed through the same ICSP connection.
Typical applications include digital power supplies, wireless power transmitters, server power supplies, motor control, drones and automotive sensors, all domains named by Microchip for the dsPIC33CH family.
Design consideration: verify slave-core debug pull-ups on the S1MCLRx pin; Microchip notes a pull-up may be required to access the slave core during development.
This page synthesizes distributor listings, drop-in family alternatives, and design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33CH64MP503-E/M5 — 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 DSPIC33CH64MP503-E/M5 (same form factor and footprint) — differing in Operating Temperature, Package, Core Architecture, RoHS Status, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CH64MP503-I/M5
✅ Drop-In✓ In Stock
$3.55 / Unit
View Datasheet →DSPIC33CH128MP203-E/M5
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.61 / Unit
View Datasheet →DSPIC33CH128MP203-I/M5
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.85 / Unit
View Datasheet →DSPIC33CH64MP503-E/M5 Maximum Ratings & Electrical Characteristics
| Core Architecture | Dual-core (master + slave) 16-bit DSC |
| Core Clock | 64 MHz |
| Program Memory (Flash) | 64 KB |
| Program Memory Width | 24 bit |
| Data RAM | 20 KB (20,480 words) |
| Data RAM Width | 8 bit |
| Connectivity | CAN Flexible Data (CAN FD) |
| PWM | High-Resolution PWM |
| Operating Temperature | -40C to +125C (E grade) |
| Qualification | AEC-Q100 qualified |
| Package | 36-pin UQFN with exposed pad (5x5 mm), PQCC-36 |
| Terminal Pitch | 0.40 mm |
| Mounting Type | Surface Mount |
| Process Technology | CMOS |
| Pin Count | 36 |
DSPIC33CH64MP503-E/M5 36-pin uqfn with exposed pad (5x5 mm), pqcc-36 Pin Configuration Guide
Pin configuration for DSPIC33CH64MP503-E/M5 (36-pin uqfn with exposed pad (5x5 mm), pqcc-36 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 DSPIC33CH64MP503-E/M5.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33CH64MP503-E/M5 is suitable for 6 applications: Digital Power Supplies, Server Power Supplies, Motor Control, Automotive Sensors, Wireless Power Transfer, Drones and UAV Power Systems.
Digital Power Supplies
The DSPIC33CH64MP503-E/M5 fits digital power supplies because its high-resolution PWM delivers fine duty-cycle resolution for tight output regulation, and its asymmetric dual-core architecture splits the fast voltage/current control loop (slave core) from supervisory, telemetry and housekeeping tasks (master core). In a typical AC-DC or DC-DC stage the slave core executes the compensator with deterministic timing while the master core drives CAN FD or UART communications for PMBus-style management. Unlike a single-core controller, this partitioning avoids interrupt jitter on the control loop. The trade-off is added firmware complexity from dual-core coordination via mailbox registers.
Recommended
Server Power Supplies
Server PSU designs demand digital control plus a robust communication interface; the DSPIC33CH64MP503-E/M5 provides the CAN FD module for digital telemetry and the high-resolution PWM needed for LLC and PFC stage control. The slave core can close the fast feedback loop on the power stage while the master core manages fault reporting, startup sequencing and communication with the shelf manager. Microchip explicitly names server power supplies as a target application for the dsPIC33CH family. Using the AEC-Q100 qualified E-grade part also gives margin for the +125C ambient conditions found in forced-air-cooled server chassis.
Recommended
Motor Control
Field-oriented control of PMSM and BLDC motors benefits directly from the DSPIC33CH64MP503-E/M5: the slave core runs the current-loop mathematics with DSP single-cycle MAC instructions and deterministic timing, while the master core handles the position/speed estimator supervisor, fault handling and communication. The high-resolution PWM peripheral produces the fine pulse widths required for low-torque-ripple sinusoidal drive at high switching frequencies. Microchip identifies motor control as a primary dsPIC33CH application domain. The CAN FD interface supports industrial drive networking in automation and robotics environments.
Recommended
Automotive Sensors
The DSPIC33CH64MP503-E/M5 is AEC-Q100 qualified and rated -40C to +125C, which are prerequisites for automotive sensor modules such as position, pressure and flow sensors mounted in harsh zones. CAN FD provides the in-vehicle network interface with the data bandwidth for higher-layer protocols, while the dual-core split allows safety-related signal conditioning on the slave core and diagnostics on the master core. Microchip names automotive sensors among the key dsPIC33CH applications. Designers should confirm the specific AEC-Q100 grade and functional-safety requirements of their end system against Microchip's qualification documentation.
Recommended
Wireless Power Transfer
Wireless power transmitters require precise, phase-adjusted PWM driving of the power stage plus fast fault detection for foreign-object and overload conditions. The DSPIC33CH64MP503-E/M5 addresses this with its high-resolution PWM for exact frequency and phase control of the resonant converter, and its dual-core architecture: the slave core executes the frequency-tracking control loop while the master core manages inter-core handshaking with the receiver protocol and communication. Microchip lists wireless power as a flagship dsPIC33CH use case. The -40C to +125C E-grade adds thermal margin in enclosed transmitter enclosures.
Recommended
Drones and UAV Power Systems
Drone electronic speed controllers and battery-management circuits need compact, lightweight digital control; the 5x5 mm 36-pin UQFN package of the DSPIC33CH64MP503-E/M5 minimizes board area while the dual-core design separates the fast motor current loop (slave core) from flight-controller communication and battery telemetry (master core). The high-resolution PWM supports the high switching frequencies used in small, efficient power stages, and 64KB Flash is sufficient for compact FOC firmware. Microchip includes drones among its named dsPIC33CH application areas, targeting weight- and space-constrained power electronics.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CH64MP503-E/M5 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CH64MP503-I/M5 | DSPIC33CH128MP203-E/M5 | DSPIC33CH128MP203-I/M5 |
|---|---|---|---|---|
| Package | 36-pin UQFN (5x5 mm) | 36-pin UQFN (5x5 mm) - same | 36-pin UQFN (5x5 mm) - same | 36-pin UQFN (5x5 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 64 KB | 64 KB | 128 KB | 128 KB |
| Operating Temperature | -40C to +125C (E grade) | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +85C (I grade) |
| Core Clock | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| CAN FD | Yes | Yes | Yes | Yes |
Key Differentiators
- Extended -40C to +125C AEC-Q100 temperature rating (vs DSPIC33CH64MP503-I/M5)
- Dual asymmetric master/slave cores in one chip (vs DSPIC33CH64MP503-I/M5)
- In-family 128KB Flash upgrade without footprint change (vs DSPIC33CH128MP203-E/M5)
Design Notes
Per Microchip's dsPIC33CH64MP503 development documentation, the slave core uses alternative S1MCLRx pins for debugging, and it may be necessary to add a pull-up on the S1MCLRx pin to successfully access the slave core with the programmer/debugger. Omitting this pull-up is a common first-bring-up failure: the master core programs fine but the slave core will not connect. Plan this resistor into the PCB from the first revision rather than bodging it on prototype boards.
Both cores and the on-chip regulators share the 36-pin UQFN supply pins; follow the Microchip datasheet decoupling recommendation with low-ESR ceramic capacitors placed directly at the VDD/VSS pin pairs and the exposed thermal pad soldered to a solid ground plane. The exposed pad is also the primary thermal path for the -40C to +125C E-grade operation, so an uninterrupted ground pour under the package is recommended for high ambient temperature designs.
Route high-resolution PWM outputs to the gate drivers with short, matched traces and keep them away from the CAN FD differential pair and analog sensing inputs to minimize switching-noise coupling. In digital power layouts, sense lines (current shunt and voltage divider feeds) should be routed as Kelvin connections back to the ADC pins. The 0.40 mm terminal pitch of the UQFN-36 requires attention to solder-mask definition and stencil design to avoid bridging during reflow.
Compliance Information
AEC-Q100 qualification confirmed via Microchip USA product listing. RoHS/REACH/lead-free status not stated in the provided verified data; confirm on the official Microchip product page.
