Overview

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

Table 1. Physical Properties of Flash Memory
Property ATtiny202 ATtiny204 ATtiny402 ATtiny404 ATtiny406
Size 2 KB 2 KB 4 KB 4 KB 4 KB
Page size 64B 64B 64B 64B 64B
Number of pages 32 32 64 64 64
Start address 0x8000 0x8000 0x8000 0x8000 0x8000
Table 2. Physical Properties of SRAM
Property ATtiny202 ATtiny204 ATtiny402 ATtiny404 ATtiny406
Size 128B 128B 256B 256B 256B
Start address 0x3F80 0x3F80 0x3F00 0x3F00 0x3F00
Table 3. Physical Properties of EEPROM
Property ATtiny202 ATtiny204 ATtiny402 ATtiny404 ATtiny406
Size 64B 64B 128B 128B 128B
Page size 32B 32B 32B 32B 32B
Number of pages 2 2 4 4 4
Start address 0x1400 0x1400 0x1400 0x1400 0x1400
Parent topic: Memories