The PIC16LF77 is a low-power variant of the popular 8-bit microcontroller, featuring 8KB of flash program memory, 256 bytes of EEPROM, and an integrated 8-channel 10-bit ADC. This chip is widely deployed in battery-operated medical devices (glucose monitors, infusion pumps), industrial sensors, automotive body controllers, and portable instrumentation due to its exceptional power efficiency (2.0V–5.5V operation). Its protected architecture includes locked read-out protection bits and encrypted configuration registers, designed to safeguard proprietary source code. However, when original binary files are lost due to obsolete development tools, supplier bankruptcy, or corrupted archives, engineers face a production dead end. The unique challenge with the PIC16LF77 lies in its secured EEPROM region, which often stores calibration constants and device serial numbers – losing these data means scrapping entire product lines. Our service specializes in ethical reverse engineering to extract every heximal byte from locked silicon, enabling legitimate restore operations without redesigning PCBs.

Low power, high speed CMOS FLASH technology

Fully static design

Wide operating voltage range: 2.0V to 5.5V

High Sink/Source Current: 25 mA

Industrial temperature range

Low power consumption:

– < 2 mA typical @ 5V, 4 MHz

– 20 µA typical @ 3V, 32 kHz

– < 1 µA typical standby current

PIC16F73/76 devices are available only in 28-pin packages, while PIC16F77 devices are available in 40-pin and 44-pin packages.

All devices in the PIC16F7X family share common architecture, with the following differences:

• The PIC16F73 and PIC16F76 have one-half of the total on-chip memory of the PIC16LF77
• The 28-pin devices have 3 I/O ports, while the 40/44-pin devices have 5
• The 28-pin devices have 11 interrupts, while the 40/44-pin devices have 12
• The 28-pin devices have 5 A/D input channels, while the 40/44-pin devices have 8
• The Parallel Slave Port is implemented only on the 40/44-pin devices

Additional information may be found in the PICmicro™ Mid-Range Reference Manual (DS33023), which may be obtained from your local Microchip Sales Representative or downloaded from the Microchip website. The Reference Manual should be considered a complementary document to this data sheet, and is highly recommended reading for a better understanding of the device architecture and operation of the peripheral modules.

Attempting to open a secured PIC16LF77 requires navigating multiple protective layers. Standard programmers return only gibberish when reading locked flash. We employ advanced fault injection and side-channel analysis to hack through read-out protection without triggering memory self-erasure. First, we use precision timing glitches to temporarily suspend secured logic, allowing us to dump the firmware region-by-region. Then we extract the EEPROM archive, which conventional methods often miss. The recovered binary is verified against checksums to ensure integrity. Unlike brute-force attacks that risk destroying the microprocessor, our non-invasive reverse engineering preserves both program and calibration data. For clients needing full source code approximation, we further restore assembly-level listings through disassembly. This entire recover process respects legal ownership – we only open protected chips with documented proof of legitimate access rights.

Consider a hospital’s fleet of patient-controlled analgesia pumps built around the PIC16LF77. The original source code was lost when the contract manufacturer closed suddenly. Without extracting the firmware from a working unit, hundreds of devices become unusable when flash degrades. Our service provides the archive needed to dump and clone fresh chips, extending equipment lifespan by years. Similarly, an automotive sensor supplier discovered that their locked microcontroller contained irreplaceable calibration tables stored in EEPROM – recreating them would cost $200,000 in dyno testing. By allowing us to recover the heximal file, they avoided bankruptcy. The meaning of this work is simple: restore access to your own intellectual property when backups fail.

End clients receive a complete dump of all flash and EEPROM memory sections in Intel HEX format, plus detailed documentation of configuration bits. This enables three immediate benefits: (1) recover production lines by programming clone chips, (2) restore legacy systems without redesign, and (3) open opportunities for security auditing or feature upgrades. Unlike generic reverse engineering services that deliver only partial binaries, we guarantee 100% data fidelity – including hidden calibration values that make your product unique. Turn a locked silicon puzzle into a usable firmware archive that keeps your business running.