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PIC18F2X1X/4X1X Data Sheet
28/40/44-Pin Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
2004 Microchip Technology Inc.
Preliminary
DS39636A
Note the following details of the code protection feature on Microchip devices: Microchip products meet the specification contained in their particular Microchip Data Sheet. ...