DSPIC33EP512MC806-E/PT: 512 KB Flash 16-bit DSC — Specs, Pinout, Alternatives and Sourcing (2026)

Quick Answers: What Is the DSPIC33EP512MC806-E/PT and Is It in Stock?

The DSPIC33EP512MC806-E/PT is a Microchip Technology 16-bit digital signal controller (DSC) built on the dsPIC33E core. It executes up to 70 MIPS, integrates 512 KB of Flash program memory (170K x 24) and 53,248 bytes of data RAM, and ships in a 64-pin TQFP measuring 10 x 10 mm. The device runs from a 3.0 V to 3.6 V supply, is AEC-Q100 qualified, and is rated from -40 °C to +125 °C (extended E grade). XAIPART stock stands at 99,999 units with an MOQ of 1, priced at $12.34 per unit at quantity 1 and $8.75 at 1,000 units as of 2026-10-06. The official datasheet is Microchip document DS70000652H.

A DSC differs from a general-purpose MCU. The DSPIC33EP512MC806-E/PT combines a microcontroller's deterministic interrupt structure with a DSP engine that executes single-cycle 16x16-bit multiply-accumulate (MAC) with saturation. That is why motor-control and digital-power engineers select it: Clarke/Park transforms and PI current loops run in dedicated arithmetic instead of software emulation.

Two database discrepancies need to be called out before you freeze a BOM. RAM labeling: the specification table lists 53,248 bytes as 52 KB while the description and FAQ round the same memory to 53 KB. These describe the same value — 53,248 bytes / 1,024 = 52 KiB — so treat 53,248 bytes as authoritative and confirm your toolchain's KiB/KB display convention when sizing buffers. Analog comparators: the product description states two analog comparators, while the specification table lists 3, annotated as coming from a datasheet snippet. The database does not resolve which count applies to the MC806 variant, so check DS70000652H before assigning comparator-based fault detection to pins.

Takeaway: budget 53,248 bytes of RAM and 512 KB of Flash, verify the comparator count on DS70000652H, and confirm ordering data on the DSPIC33EP512MC806-E/PT product page.

Technical Guide: How Do You Select and Design In the DSPIC33EP512MC806-E/PT?

Size the control loop from MIPS, not from marketing numbers

At 60 MIPS from a 3.3 V VDD, a 20 kHz current loop receives 60,000,000 / 20,000 = 3,000 instruction slots per iteration. At the 70 MIPS maximum the budget rises to 3,500 slots. That arithmetic is the real selection criterion. A 3-phase FOC loop that consumes 1,200 slots per iteration leaves room for CAN diagnostics and PWM fault handling; one that consumes 3,200 does not.

Match peripherals to topology before layout

Wire power, analog and clock domains from the verified pinout

The verified pinout places VSS on pin 5 and VDD on pin 11, with the analog domain isolated on AVDD (pin 63) and AVSS (pin 64). The oscillator lands on OSC1/RC12 (pin 6) and OSC2/RC15 (pin 7). Reset is MCLR on pin 58. The first motor-control PWM module exits on pins 12 through 17 as PWM1H1/PWM1L1 through PWM1H3/PWM1L3 — exactly the six gate-drive signals a three-phase inverter needs. ADC channels AN0 and AN1 sit on pins 33 and 34; CAN1 uses C1RX/C1TX on pins 54 and 55 and CAN2 uses C2RX/C2TX on pins 56 and 57. The remaining remappable pins carry the rest of the peripheral set. The full pin table is published on the DSPIC33EP512MC806-E/PT page.

Two layout rules follow from those numbers. Route AVSS and AVDD as a separate return to the ADC reference point rather than daisy-chaining them from digital VSS, and keep the MCLR pull-up short enough that in-circuit programming through the PGED/PGEC pins stays reliable.

Allocate memory early

512 KB of Flash organized as 170K x 24 words is generous for control firmware but finite for connectivity stacks: the applications data lists AUTOSAR MCAL drivers, OBD-II firmware, UDS/KWP2000 diagnostics, and ISO 15118 charger protocols as realistic loads on this device. On the RAM side, 53,248 bytes hold 13,312 single-precision 32-bit values (53,248 / 4). A dual-axis servo loop storing position, velocity and current PI state per axis consumes that budget faster than most teams expect. Dual-partition Flash is supported per the datasheet, which allows live firmware updates without an external bootloader.

Pick the temperature grade deliberately

The E suffix is the extended grade: -40 °C to +125 °C with AEC-Q100 qualification. The industrial sibling DSPIC33EP512MC806-I/PT stops at -40 °C to +85 °C. If any part of your enclosure, thermal path or under-hood location exceeds +85 °C ambient, the E grade is not optional.

Takeaway: verify loop timing against 60 MIPS at 3.3 V, reserve ARC-coded Flash for connectivity stacks, and confirm the comparator count on DS70000652H before assigning fault-detection pins.

Alternatives & Comparison: What Are the Drop-In Replacements for the DSPIC33EP512MC806-E/PT?

The dsPIC33EP family provides footprint-compatible second sources, but only some variants preserve the motor-control peripheral set. The table below lists every alternative documented in the XAIPART database for this part.

Three sourcing decisions follow from this table. First, if -40 °C to +85 °C is acceptable, the DSPIC33EP512MC806-I/PT shares the die and footprint and drops the +125 °C requirement. Second, high-volume SMT lines should plan for the tape-and-reel variant DSPIC33EP512MC806T-E/PT, which keeps AEC-Q100 qualification and the same die. Third, the DSPIC33EP512GP806-I/PT is not a functional drop-in: it carries the same 512 KB Flash and 53 KB RAM but lacks the dual motor-control PWM modules and dual QEI, so any FOC, servo or digital-power design loses its core peripherals.

Cross-vendor substitution is not available on this footprint. The database's comparison notes record that STMicroelectronics motor-control parts such as the STM32F302R8 target similar 3-phase PMSM/BLDC applications on a different core and package, and that Texas Instruments C2000 devices such as the TMS320F28035 ship in QFP-80 or LQFP-100 packages. Neither is pin-compatible, so both require PCB redesign rather than substitution.

Takeaway: second-source inside the dsPIC33EP family, confirm peripheral equivalence (MC vs GP) before approving an alternate, and treat Cortex-M4 and C2000 options as redesign paths, not drop-ins. Browsing the wider XAIPART component catalog confirms the available family variants.

Industry Insight: What Is the Lifecycle Status and Supply Situation?

The DSPIC33EP512MC806-E/PT carries an active lifecycle status in the XAIPART database. Verified stock is 99,999 units at an MOQ of 1, so prototype and low-volume builds can be filled from shelf inventory without a factory commitment as of 2026-10-06.

The published base price of $8.75 matches the 1,000-unit tier, and the full curve from $12.34 to $8.75 is a 29.1% step-down across the five tiers. The steepest single break sits between quantity 1 and quantity 10, where the unit price falls 7.2% to $11.45.

Supply is dual-channel. Factory-direct lead time runs 8 to 12 weeks from Microchip, while the database records same-day in-stock availability for low quantities at authorized distributors as of 2026-10-05. AEC-Q100 qualified lots are subject to longer PPAP and validation cycles, so automotive programs should book production quantities earlier than the headline lead time suggests. The database provides no market-share, competitor-volume or end-market consumption data for this part; treat competitive positioning as family-level only.

Market position follows from the peripherals rather than from price. With two CAN 2.0B controllers, two QEI channels and 53 GPIO in a 64-pin footprint, the competitive set is Microchip's own dsPIC33EP family rather than cross-vendor pin-compatible devices. The MC (motor-control) variants carry the peripheral set that general-purpose dsPIC33EP parts and Cortex-M4 devices do not match on the same footprint.

Takeaway: for low and mid volume, buy from stock now; for automotive production, start PPAP in parallel with the 8-to-12-week factory lead time and lock the E grade before the design freezes.

Trends & Outlook: What Should Buyers Watch in 2026?

1. Grade mixing is the top substitution risk. The only difference between the E and I grades is the temperature ceiling (-40 °C to +125 °C versus -40 °C to +85 °C) plus AEC-Q100 qualification, yet the same TQFP-64 footprint accepts both. A purchasing-driven swap to the I grade silently removes automotive qualification. Gate it with a part-number check in your AVL, not a footprint check.

2. Peripheral equivalence, not pin count, decides second sources. Both the DSPIC33EP256MC806-I/PT (256 KB Flash, half the program memory) and the DSPIC33EP512GP806-I/PT (512 KB Flash but no dual motor-control PWM or QEI) fit the same socket. For FOC or digital-power designs, only the MC variants qualify.

3. Connectivity stacks are the real Flash consumer. The applications data lists UDS/KWP2000 diagnostics, AUTOSAR MCAL drivers, OBD-II firmware and ISO 15118 charger protocols running on this device. 512 KB of Flash is comfortable for control code and tight for stacked connectivity — profile the stack before choosing the 256 KB variant as a cost-down.

4. Plan tape-and-reel and volume pricing together. The DSPIC33EP512MC806T-E/PT reel variant preserves the die and AEC-Q100 status. Because the unit price falls from $12.34 at quantity 1 to $9.50 at 250 and $8.75 at 1,000, qualifying a reel and a volume tier in the same cycle avoids a second qualification pass.

5. Analog front-end changes are the open engineering item. The unresolved comparator count (2 in the description versus 3 in the spec table) affects fault-detection architecture more than it affects pricing. Resolve it against DS70000652H before releasing a schematic that depends on comparator-based overcurrent trips. Related design methodology is covered on the XAIPART blog for motor-control and power-conversion builds.

Takeaway: lock the E grade in your AVL, treat MC versus GP as the only valid family second-source axis, and confirm the analog comparator count before your schematic release.