DSPIC33CK512MP305T-I/M7
DSPIC33CK512MP305T-I/M7 - 16-bit 100MIPS DSC, 512KB | Microchip
The Microchip Technology DSPIC33CK512MP305T-I/M7 is a 16-bit digital signal controller (DSC) delivering 100 MIPS performance from a single dsPIC33CK core, with 512KB of dual-panel Flash program memory, 64KB of RAM, integrated operational amplifiers, 12-bit ADCs, and high-resolution PWM, packaged in a 48-pin VQFN (6x6 mm, M7) surface-mount package.
A digital signal controller combines the computational throughput of a DSP with the peripheral integration and ease of use of a microcontroller. Within the power-management hierarchy, the dsPIC33CK family sits between general-purpose MCUs and dedicated digital power controllers, offering deterministic single-cycle MAC/DSP instructions, fast interrupt handling, and tightly coupled analog peripherals for closed-loop control at switching frequencies well above 100 kHz.
Key features include the 100 MHz dsPIC33C core with DSP engine, 512KB dual-panel Flash supporting live firmware updates, 64KB of on-chip RAM for control buffers and communication stacks, up to three on-chip operational amplifiers, 12-bit ADCs capable of simultaneous multi-channel sampling, and advanced high-resolution PWM peripherals purpose-built for digital power and motor control topologies. Eight DMA channels offload data movement from the CPU, preserving headroom for the control loop.
The architecture pairs a 16-bit modified Harvard core with an independent DSP multiply-accumulate unit and barrel shifter, while the dual-panel Flash allows code execution from one panel during erase/program of the other. Low-power modes, brown-out reset, watchdog timer, and a flexible clock system (internal FRC with PLL) round out the integration level typically needed for certified industrial designs.
Typical applications include sensorless field-oriented-control (FOC) motor drives for HVAC blowers and industrial pumps, digitally controlled PFC and LLC power supplies in server and telecom rectifiers, and high-current battery charging systems where precise PWM resolution and fast ADC sampling directly improve efficiency and transient response.
For design, note the supply must be a regulated 3.0-3.6 V rail; decouple AVDD with a low-ESR ceramic capacitor placed close to the pin to protect the on-chip op-amp and ADC accuracy, and route analog grounds per the datasheet layout guidance.
This page synthesizes distributor availability, drop-in alternatives, design notes, and FAQ content not found in the manufacturer datasheet, verified as of 2026-09-23.
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