BETAProgram memory
Instructions, the user ID and the configuration words.
Configuration words0x300000 – 0x30000910 B
User ID0x200000 – 0x20000F16 B
Flash0x0000 – 0x1FFFF128 KB
PIC18F27K42 memory map
Where everything sits, at its exact address. The PIC18F27K42 keeps program and data apart (Harvard): program memory holds 16-bit instruction words, addressed in bytes, while the special function registers and the general-purpose RAM share the banked data memory.
Data memory
Banked: special function registers and general-purpose RAM in each bank.
RAM, bank 310x1F00 – 0x1FFF256 B
RAM, bank 300x1E00 – 0x1EFF256 B
RAM, bank 290x1D00 – 0x1DFF256 B
RAM, bank 280x1C00 – 0x1CFF256 B
RAM, bank 270x1B00 – 0x1BFF256 B
RAM, bank 260x1A00 – 0x1AFF256 B
RAM, bank 250x1900 – 0x19FF256 B
RAM, bank 240x1800 – 0x18FF256 B
RAM, bank 230x1700 – 0x17FF256 B
RAM, bank 220x1600 – 0x16FF256 B
RAM, bank 210x1500 – 0x15FF256 B
RAM, bank 200x1400 – 0x14FF256 B
RAM, bank 190x1300 – 0x13FF256 B
RAM, bank 180x1200 – 0x12FF256 B
RAM, bank 170x1100 – 0x11FF256 B
RAM, bank 160x1000 – 0x10FF256 B
RAM, bank 150x0F00 – 0x0FFF256 B
RAM, bank 140x0E00 – 0x0EFF256 B
RAM, bank 130x0D00 – 0x0DFF256 B
RAM, bank 120x0C00 – 0x0CFF256 B
RAM, bank 110x0B00 – 0x0BFF256 B
RAM, bank 100x0A00 – 0x0AFF256 B
RAM, bank 90x0900 – 0x09FF256 B
RAM, bank 80x0800 – 0x08FF256 B
RAM, bank 70x0700 – 0x07FF256 B
RAM, bank 60x0600 – 0x06FF256 B
RAM, bank 50x0500 – 0x05FF256 B
RAM, bank 40x0400 – 0x04FF256 B
RAM, bank 30x0300 – 0x03FF256 B
RAM, bank 20x0200 – 0x02FF256 B
RAM, bank 10x0100 – 0x01FF256 B
RAM, bank 00x0060 – 0x00FF160 B
RAM, bank 00x0000 – 0x005F96 B
EEPROM
Non-volatile data, kept without power.
EEPROM0x0000 – 0x03FF1 KB
Every segment
| Segment | Space | Start | End | Size | Page |
|---|---|---|---|---|---|
| RAM, bank 0 | data | 0x0000 | 0x005F | 96 B | |
| General-purpose RAM, all banks | data | 0x0000 | 0x1FFF | 8 KB | |
| RAM, bank 0 | data | 0x0060 | 0x00FF | 160 B | |
| RAM, bank 1 | data | 0x0100 | 0x01FF | 256 B | |
| RAM, bank 2 | data | 0x0200 | 0x02FF | 256 B | |
| RAM, bank 3 | data | 0x0300 | 0x03FF | 256 B | |
| RAM, bank 4 | data | 0x0400 | 0x04FF | 256 B | |
| RAM, bank 5 | data | 0x0500 | 0x05FF | 256 B | |
| RAM, bank 6 | data | 0x0600 | 0x06FF | 256 B | |
| RAM, bank 7 | data | 0x0700 | 0x07FF | 256 B | |
| RAM, bank 8 | data | 0x0800 | 0x08FF | 256 B | |
| RAM, bank 9 | data | 0x0900 | 0x09FF | 256 B | |
| RAM, bank 10 | data | 0x0A00 | 0x0AFF | 256 B | |
| RAM, bank 11 | data | 0x0B00 | 0x0BFF | 256 B | |
| RAM, bank 12 | data | 0x0C00 | 0x0CFF | 256 B | |
| RAM, bank 13 | data | 0x0D00 | 0x0DFF | 256 B | |
| RAM, bank 14 | data | 0x0E00 | 0x0EFF | 256 B | |
| RAM, bank 15 | data | 0x0F00 | 0x0FFF | 256 B | |
| RAM, bank 16 | data | 0x1000 | 0x10FF | 256 B | |
| RAM, bank 17 | data | 0x1100 | 0x11FF | 256 B | |
| RAM, bank 18 | data | 0x1200 | 0x12FF | 256 B | |
| RAM, bank 19 | data | 0x1300 | 0x13FF | 256 B | |
| RAM, bank 20 | data | 0x1400 | 0x14FF | 256 B | |
| RAM, bank 21 | data | 0x1500 | 0x15FF | 256 B | |
| RAM, bank 22 | data | 0x1600 | 0x16FF | 256 B | |
| RAM, bank 23 | data | 0x1700 | 0x17FF | 256 B | |
| RAM, bank 24 | data | 0x1800 | 0x18FF | 256 B | |
| RAM, bank 25 | data | 0x1900 | 0x19FF | 256 B | |
| RAM, bank 26 | data | 0x1A00 | 0x1AFF | 256 B | |
| RAM, bank 27 | data | 0x1B00 | 0x1BFF | 256 B | |
| RAM, bank 28 | data | 0x1C00 | 0x1CFF | 256 B | |
| RAM, bank 29 | data | 0x1D00 | 0x1DFF | 256 B | |
| RAM, bank 30 | data | 0x1E00 | 0x1EFF | 256 B | |
| RAM, bank 31 | data | 0x1F00 | 0x1FFF | 256 B | |
| EEPROM | eeprom | 0x0000 | 0x03FF | 1 KB | |
| Flash | prog | 0x0000 | 0x1FFFF | 128 KB | |
| User ID | prog | 0x200000 | 0x20000F | 16 B | |
| Configuration words | prog | 0x300000 | 0x300009 | 10 B |