Freescale Semiconductor MCZ33903C5EKR2

MCZ33903C5EKR2 belongs to NXP's second-generation MC33903 system basis chip family. The family combines voltage regulation for a host microcontroller, a protected CAN transceiver, supervision and SPI-based control in one automotive-oriented device. NXP's product documentation describes MC33903 functionality, while its product change records identify this exact C5 ordering code as a 5 V regulator plus CAN configuration. Verify the exact mask, ordering status and application conditions for legacy stock before committing a new design.

The LCDChip record identifies a 32-SSOP body, 0.295-inch (7.50 mm) width with exposed pad. NXP change documentation describes the exact code as HSO32 / SOT1746-3; review the controlled mechanical drawing and thermal-pad land pattern to reconcile these nomenclatures before PCB release. The package registry contains a 32-SSOP Exposed Pad entry.

Assembly checks

• Confirm body width, pitch and exposed-pad dimensions against the NXP drawing.
• Verify pin 1, solder mask and thermal-via design.
• Confirm handling and moisture classification for the selected lot.

The registered local JPG is currently missing; this draft cannot be published until the image is supplied and rechecked.

Use NXP's exact 32-pin table for physical connections. Functional groups include VSUP supply pins, VDD and auxiliary regulation, CANH/CANL bus pins, SPI signals (MOSI, MISO, SCLK, CS), reset and interrupt outputs, and wake-up/control pins. Do not infer physical pin numbers from this summary.

Compare MCU supply voltage and current, CAN diagnostics, wake-up behavior, SPI register map, reset thresholds, package drawing, exposed-pad connection and automotive qualification before considering any alternative. No unverified internal model is linked or presented as a drop-in replacement.

NXP's MC33903 product page and Rev. 15 family data sheet are the technical basis for the functional description. An NXP product-change list identifies MCZ33903C5EKR2 as a 5 V regulator plus CAN device in HSO32 / SOT1746-3. Confirm exact-code lifecycle, mask revision and mechanical drawing with NXP or an authorized channel before use.

Match the full MCZ33903C5EKR2 code, NXP/Freescale markings, date code, package drawing and traceability documents to the purchase record. For legacy material, request evidence of storage, handling and authenticity before assembly. Distributor stock is a listing, not a manufacturer qualification of a particular lot.

This is a review draft. Verify the current NXP controlled data sheet, exact orderable-part status, silicon mask, thermal and package drawings, and selected distributor lot before design qualification or purchasing. Supply the registered package JPG and complete human review before publication.