The PIC16F1773 begins the 177x closed-loop generation in a 28-pin package: 7 KB of flash, 512 bytes of SRAM, three op amps, six high-speed comparators, a seventeen-channel 10-bit ADC, three 5-bit and three 10-bit DACs, and three programmable ramp generators – an analogue array designed to be wired internally so a control loop never leaves the die. When protection is engaged, our extract secured PIC16F1773 binary service recovers the image from hardware you own.

Internal connections are the hidden schematic

The 177x family’s defining feature is that its analogue blocks can be interconnected without using pins: an op amp feeds a DAC offset, a comparator trips a COG, a ramp generator shapes the feedback path – all configured at boot from constants in flash. That wiring map is the hidden schematic of a power product, and it exists nowhere except in the firmware. Our extract secured PIC16F1773 binary report therefore goes beyond the image itself: it marks which configuration regions drive the analogue interconnect, so an engineer rebuilding a supply after an end-of-life event can read the loop structure instead of reverse-engineering it from scope traces. Verification closes the loop literally – the clone and donor run side by side through load transients while comparator trips and COG outputs are compared on a mixed-signal fixture. Protection on this generation is the configuration-word scheme: engaged, it refuses external reads; the only documented clear is a bulk erase that destroys the array, so the erase stays permanently out of the procedure. Bench reasoning is in the how the MCU memory works guide, and the lawful boundary in the reverse engineering integrated circuit legitimate foundation article.

The three op amps on this die are typically assigned one per loop, and knowing which is which is worth a page of the report. In the supplies we most often recover, one amplifier conditions the current sense, one the voltage feedback, and one an auxiliary temperature or fan channel; their gain registers encode the shunt values and divider ratios the board was built with. Capturing those registers alongside the flash image means a replacement part reproduces not just the code but the measurement chain’s calibration assumptions – the difference between a clone that boots and one that regulates.

Configuration-word layout on the 177x generation also differs from the 176x parts that preceded it, which trips up teams migrating spares between generations. Our delivery includes the configuration words in both raw and annotated form, with each protection and oscillator field explained, so a replacement part programmed from our image starts with exactly the access policy and clock setup the manufacturer chose rather than whatever a generic programmer defaults to.

Duplication

Verified images are written into blank 28-pin parts with configuration words restored and read-back comparison on every unit, through the MCU flash EEPROM data cloning pipeline.

Dead-time constants are the sharpest edge in 177x images. The COG dead-band units are configured from flash words whose resolution is fine enough that even a one-count error shifts switching losses measurably, and in the supplies we recover the values are rarely round numbers – they were tuned on the bench against real magnetics. Our verification therefore captures switching edges at high time resolution and compares the measured dead time, not the register values, because a units mistake in the report costs an engineer far more than a few nanoseconds suggests.

Family links

The 14 KB sibling is on the PIC16F1776 MCU page, the 40-pin members on the PIC16F1777 chip and PIC16F1778 source code recoveries, and the 176x predecessors on the PIC16F1769 software page.

Internal interconnection also means fewer external clues: a loop that never leaves the die leaves no trace on the schematic, so a board-level engineer diagnosing a clone has no wiring diagram to fall back on. That is precisely why the interconnect map in our report is written for hardware readers, with each internal link described in the language of the external signal it replaces.

Scope and next step

We accept only units you own or are authorised to service. Send the locked PIC16F1773 and we will confirm the package, quote a fixed fee, and return a verified binary with its analogue-interconnect map.