The suffix -I is not the only temperature story on this part. The PIC32MZ1024EFH100 belongs to the EF generation’s automotive-qualified corner: AEC-Q100 Grade 1 rated, -40 to +125 °C, with special ordering codes for automotive builds. That rating shapes recovery projects in unglamorous but real ways — where replacement stock comes from, how samples are handled before they reach a probe, and who signs off before anything destructive happens. The binary read itself is family-standard; the surrounding process is not.
The Die In Brief
Everything inside is EF-generation standard: microAptiv UC core to 252 MHz and about 415 DMIPS, 32 KB instruction and data caches, a seven-stage FPU for single and double precision, dual CAN controllers, the crypto engine with TRNG, and microMIPS encoding for tight sections. Program flash covers 0x1D000000 to 0x1D0FFFFF in 16 KB erase pages with 256 KB of SRAM behind it, plus the twin 80 KB boot panels and their configuration tails. The H in the part number marks a silicon revision, not a feature cut — every EF letter carries the same hardware. The family overview untangles the two families’ suffix rules.
What Grade 1 Changes In Practice
Automotive-qualified stock tends to sit in constrained channels: lot-controlled distribution, certificates of conformance, and a buyer who must demonstrate where each sample came from. A recovery project that needs three controllers — one to read, one to verify against, one spare — starts with sourcing evidence, not with lab work. Handling adds a second layer: parts rated to 125 °C are often pulled from modules that lived hot, and delidding or probing heat-stressed packages needs a gentler schedule than shelf-fresh stock. The invasive extraction service describes the handling ladder from non-invasive reads upward.
The Read And Its Verification
Capture follows the six-region family pattern — program flash, two boot panels, two configuration tails, boot-sequence word — with the EF-specific requirement that configuration words are validated in their ECC context, quad-word programmed, and cross-checked against the alternate mirror set. Binary verification closes with a boot test and a peripheral census: the reviewer lists every register the image touches and confirms each one exists on the die it will be re-hosted onto. Only then does the binary ship, with checksum evidence attached. The verification pipeline lists the acceptance criteria.
Protection And Authorization On Automotive Parts
The protection model stays the one active-low code-protection word: cleared, ICSP and the 4-wire JTAG port lock together, and the only release is a chip erase that takes both panels and both config copies. What tightens is the authorization bar. Automotive IP has owners with legal departments, and engagements on Grade 1 parts proceed only with documentation that would satisfy them — arranged through the contact desk before any sample ships to the lab.
Evidence Packaged For The Customer’s Auditor
Automotive clients answer to their own customers, and a recovery deliverable that cannot be cited is a deliverable half done. Reports on this part therefore ship with provenance: sample source and lot references, a chain-of-custody note for the time the part spent in the lab, checksum evidence, and the bench log from the boot test. None of it touches the binary; all of it helps when a quality department asks where the replacement firmware came from. The format has settled over many engagements and shortens the client’s own documentation work accordingly.
Who Requests This Part
Two profiles dominate. Tier-two suppliers recovering their own firmware after a toolchain or personnel loss; and system integrators who inherited a module designed elsewhere and now need the binary to keep production alive. Both need the same artifact — a verified image plus evidence — and both need it without the part’s field history being lost, which is why capture reports include panel selection state and any evidence of field updates.
The 64-pin sibling of this die is profiled on the 1024EFH064 page, which covers the revision-letter system this family shares.