BETAProgram memory
Instructions, the user ID and the configuration words.
Configuration words0x0FFF – 0x0FFF1 word
User ID0x0400 – 0x04034 words
Flash0x0000 – 0x03FF1K words
PIC12C509A memory map
Where everything sits, at its exact address. The PIC12C509A keeps program and data apart (Harvard): program memory holds 12-bit instruction words, addressed in words, 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 10x0030 – 0x003F16 B
RAM, bank 00x0010 – 0x001F16 B
RAM, bank 00x0007 – 0x000F9 B
Every segment
| Segment | Space | Start | End | Size | Page |
|---|---|---|---|---|---|
| RAM, bank 0 | data | 0x0007 | 0x000F | 9 B | |
| General-purpose RAM, all banks | data | 0x0007 | 0x002F | 41 B | |
| RAM, bank 0 | data | 0x0010 | 0x001F | 16 B | |
| RAM, bank 1 | data | 0x0030 | 0x003F | 16 B | |
| Flash | prog | 0x0000 | 0x03FF | 1K words | |
| User ID | prog | 0x0400 | 0x0403 | 4 words | |
| Configuration words | prog | 0x0FFF | 0x0FFF | 1 word |