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Unlock Microcontroller PIC18F8390 and extract the software from the memory, the memory should be included not only the flash but also eeprom, the cloned MCU will provide the same functions;

Unlock Microcontroller PIC18F8390 Eeprom

· Memory Endurance: The Flash cells for program memory are rated to last for approximately a thousand erase/write cycles. Data retention without refresh is conservatively estimated to be greater than 100 years.

· Extended Instruction Set: The PIC18F8390 family introduces an optional extension to the PIC18 instruction set, which adds 8 new instructions and an Indexed Addressing mode. This extension, enabled as a device configuration option, has been specifically designed to optimize re-entrant application code originally developed in high-level languages such as C.

· 10-Bit A/D Converter: This module incorporates programmable acquisition time, allowing for a channel to be selected and a conversion to be initiated without waiting for a sampling period and thus, reduces code overhead.

· Extended Watchdog Timer (WDT): This enhanced version incorporates a 16-bit prescaler, allowing a time-out range from 4 ms to over 10 minutes that is stable across operating voltage and temperature.

Devices in the PIC18F6390/6490/8390/8490 family are available in 64-pin (PIC18F6X90) and 80-pin (PIC18F8X90) packages. Block diagrams for the two groups are shown in Figure 1-1 and Figure 1-2, respectively.

The devices are differentiated from each other in three ways:

1. I/O Ports: 7 bidirectional ports on 64-pin devices; 9 bidirectional ports on 80-pin devices.

2. LCD Pixels: 128 (32 SEGs x 4 COMs) pixels can be driven by 64-pin devices; 192 (48 SEGs x 4 COMs) pixels can be driven by 80-pin devices.

3. Flash Program Memory: 8 Kbytes for PIC18FX390 devices; 16 Kbytes for PIC18FX490. All other features for devices in this family are identical. These are summarized in Table 1-1. The pinouts for all devices are listed in Table 1-2 and Table 1-

3. Like all Microchip PIC18 devices, members of the PIC18F6390/6490/8390/8490 family are available as both standard and low-voltage devices. Standard devices with Flash memory, designated with an “F” in the part number (such as PIC18F6390), accommodate an operating VDD range of 4.2V to 5.5V. Low-voltage parts, designated by “LF” (such as PIC18LF6490), function over an extended VDD range of 2.0V to 5.5V.