PIC18FXX2 Data Sheet High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D DS39564C-page ii © 2006 Microchip Technology Inc. Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates.
The PIC18F252 and PIC18F452 each have 32 Kbytes of FLASH memory, while the PIC18F242 and PIC18F442 have 16 Kbytes of FLASH. This means that PIC18FX52 devices can store up to 16K of single word instructions, and PIC18FX42 devices can store up to 8K of single word instructions.
Note1:The PSPIF, PSPIE and PSPIP bits are reserved on the PIC18F2X2 devices; always maintain these bits clear. © 2006 Microchip Technology Inc. DS39564C-page 177
PIC18FXX2 6.0 DATA EEPROM MEMORY The Data EEPROM is readable and writable during normal operation over the entire VDDrange. The data memory is not directly mapped in the register file space. Instead, it is indirectly addressed through the Special Function Registers (SFR).