Overview

The main memories are SRAM data memory, EEPROM data memory, and Flash program memory. In addition, the peripheral registers are located in the I/O memory space.

Table 1. Physical Properties of EEPROM
Property	ATtiny1606	ATtiny806
Size	256B	128B
Page size	32B	32B
Number of pages	8	4
Start address	0x1400	0x1400

Table 2. Physical Properties of SRAM
Property	ATtiny1606	ATtiny806
Size	1 KB	512B
Start address	0x3C00	0x3E00

Table 3. Physical Properties of Flash Memory
Property	ATtiny1606	ATtiny806
Size	16 KB	8 KB
Page size	64B	64B
Number of pages	256	128
Start address	0x8000	0x8000

The SRAM is mirrored within the address space 0x2000 - 0x3FFF

Self programming between sections in memory is only possible in the following combinations:

Boot
- to application code
- to application data

Application code
- to application data

It is not possible for the different sections to write to themselves. Application data cannot write to Flash or EEPROM.

CPU execution will be halted while doing self programming

EEPROM can be written from Boot and application code