The PIC16F18325 carries 14 KB of flash and 1 KB of SRAM on a 14-pin body, with a 256-byte data EEPROM and a full peripheral set including two SPI or I2C masters, a CWG pair and four CLCs. That capacity makes it a capable small-footprint controller, and when it is locked our dump secured PIC16F18325 heximal service recovers the hex image from a unit you own.

Samsung Microprocessor S3F84H5 Code Duplication

How the lock presents

As on every PIC16F183 device, protection is held in the configuration words. With code protection enabled, external tools cannot read the flash, and Microchip states that clearing it is a bulk-erase event. A proper dump secured PIC16F18325 heximal recovery reads the array first and keeps the data intact, so the owner retains the confirmed-good firmware instead of losing it to an erase that cannot be reversed.

Controlled extraction

We confirm the 14-pin package, power within 1.8 to 5.5 V, and use ICSP to inspect the protect state before reading. A single pass pulls the 14 KB application, the 256-byte EEPROM and the configuration words, after which a checksum ties the image to the silicon. The same caution guards the unlock protected PIC16F18324 chip work below it and the replicate encrypted PIC16F18313 MCU task on the 8-pin part, and the restoring microcontroller PIC16F1619T flash memory code reference shows nearby behaviour on a comparable device.

Delivering the heximal

The result is a hex and binary pair plus a short report describing the protection we found. For related context, the reverse engineering MCU memory originality discussion frames the legitimate boundary, and the practical duplication is our MCU flash EEPROM data cloning service, which also supports our fully microcontroller cloning work for complete rebuilds when only the silicon remains.

Heximal handling and the EUSART path

The 14 KB part commonly carries an EUSART, and recovered firmware that talks on a serial bus needs the EEPROM and the configuration words intact or the clone will not converse with its host. Our read keeps those blocks together, so a replaced unit drops onto the existing wiring and speaks the same protocol without a re-learn. The heximal file we return is laid out exactly as the programmer expects, with the configuration region in its correct position, which removes a frequent source of error when someone tries to hand-edit a partial dump. For bridge products that translate between buses, a faithful image is usually the only practical route back to a working module.

Room to grow on the same 14-pin footprint

Microchip kept the PIC16F18323, PIC16F18325 and PIC16F18326 pin-compatible, so a design house can scale memory without touching the board. That compatibility also helps after a recovery: if an application has outgrown the original 3.5 KB part, the same recovered architecture can be re-targeted onto the larger member, and we can advise where the extra flash and SRAM are best spent. Conversely, when a 28 KB design must be shrunk for cost, the verified image shows exactly how much of the array the program truly occupies. Either way the capture acts as the reference point for the migration, which is why we archive it in a form that stays readable years after the original silicon is gone.

Where the 14 KB part is used

Consumer firmware, small PLC-like nodes and protocol bridges use this footprint when the 3.5 KB parts are too small but a 28-pin body will not fit. They are locked for IP protection and later surface during a redesign, at which point a clean hex image is the most efficient way to resume work.

Principles we follow

We act only on devices you own or are authorised to service, and every job ends with a verification report that proves both the result and the right to perform it. The storage analysis we publish explains the underlying memory map so the recovery is transparent rather than mysterious, and our MCU flash EEPROM data cloning step is equally open about what was copied and why.

Next step

Send the locked PIC16F18325 and we will confirm the package, quote a fixed price, and return the heximal image with integrity proof. The image can then be replicated on demand through our standard cloning pipeline.