The PIC16F1719 is the 40/44-pin flagship of the 171x family: 28 KB of flash, 2048 bytes of SRAM, thirty-six I/O lines under peripheral pin selection and a 10-bit ADC spanning twenty-eight external channels – the widest analogue front end of its generation at this pin count. Add two op amps, two comparators, dual DACs, four configurable logic cells and a numeric-controlled oscillator, and the part becomes a complete measurement chain on one die. When its configuration-word protection is set, our readout secured PIC16F1719 flash service recovers the image from hardware you own.

Reading the widest ADC of the generation

Twenty-eight channels concentrate a design’s value in scan behaviour: which channels are sampled, in what order, and what the op amps contribute on the way in are all constants held in flash. A checksum-only clone preserves the bytes but loses the proof that the scan engine still walks them correctly, which is why our verification samples multiple channels on the clone and the donor in parallel and compares conversion values and interrupt timing side by side. Divergence almost always traces to an op-amp gain setting or a scan-table constant, and the comparison note tells your engineers exactly which. The 44-pin TQFP packages this generation ships in are gentle to work with – good lead pitch, stable rails – but the readout still follows the cautious sequence: confirm the security state from the configuration words, then read what answers, and keep the bulk erase that clearing protection would demand permanently out of the procedure. The general bench reasoning is in the how the MCU memory works guide and the microcontroller firmware instruction reference.

The 44-pin TQFP is physically easy to work with, but lead pitch is not the only handling consideration. These packages absorb board-level stress over years of thermal cycling, and a donor removed from a working unit can carry hairline lead damage that only shows as an intermittent open during the long capture. We inspect and re-flow suspect leads before the first read, and the capture sequence is broken into short sessions so a marginal contact costs minutes rather than the whole pass. Nothing in that handling writes to the array, so a protected part stays protected exactly as found.

The numeric-controlled oscillator and the four configurable logic cells are the quiet workhorses of the images we see on this part: NCO frequency words set up carrier or scan clocks that nothing else in the system documents, and CLC gate maps wire them into the PWM chain. Our recovery report lists the NCO frequency words and the CLC input mappings next to the ADC scan table, because together those three blocks describe what the product actually does – more honestly, in our experience, than the main application code does.

Verification and delivery

Every readout secured PIC16F1719 flash job closes with a verification pass on real hardware: the image is programmed into a blank 40/44-pin part, booted, and its peripheral behaviour compared against the donor before delivery. Images are then available for volume duplication through the MCU flash EEPROM data cloning pipeline, with read-back comparison on every unit. The lawful boundary of the work is framed in the reverse engineering integrated circuit legitimate foundation article.

Boot-mode straps deserve a line in every report on this package. The 44-pin build exposes the boot configuration through pins that production boards often tie with resistors, and a replacement part programmed correctly but dropped onto different strap wiring will boot into the wrong mode – usually ICSP rather than the application. We photograph and record the strap network of every donor board we receive, so the delivered notes describe not only the image but the electrical context it expects.

Family links

The 28-pin members are on the PIC16F1717 heximal and PIC16F1718 firmware pages, and the newer 180xx flagship with data EEPROM on the PIC16F18075 MCU recovery.

Scope

We accept only units you own or are authorised to service, with records kept per job and a verification report closing each recovery. Send the locked PIC16F1719 and we will confirm the package, quote a fixed fee, and return a verified image with its scan-table and op-amp notes.