ATTINY26L8SU SL383 Atmel, ATTINY26L8SU SL383 Datasheet - Page 18

• Manufacturer Part Number: ATTINY26L8SU SL383
• Description: MCU 8-Bit ATtiny AVR RISC 2KB Flash 3.3V/5V 20-Pin SOIC T/R
• Manufacturer: Atmel

In-System Programmable
Flash Program Memory
SRAM Data Memory
18
ATtiny26(L)
Figure 18. On-chip Data SRAM Access Cycles
The ATtiny26(L) contains 2K bytes On-chip In-System Programmable Flash memory for
program storage. Since all instructions are 16- or 32-bit words, the Flash is organized as
1K x 16. The Flash memory has an endurance of at least 10,000 write/erase cycles. The
ATtiny26(L) Program Counter – PC – is 10 bits wide, thus addressing the 1024 program
memory addresses, see “Memory Programming” on page 109 for a detailed description
on Flash data downloading. See “Program and Data Addressing Modes” on page 12 for
the different program memory addressing modes.
Figure 19. SRAM Organization
Figure 19 above shows how the ATtiny26(L) SRAM Memory is organized.
The lower 224 Data Memory locations address the Register File, the I/O Memory and
the internal data SRAM. The first 96 locations address the Register File and I/O Mem-
ory, and the next 128 locations address the internal data SRAM.
System Clock Ø
Address
I/O Registers
Register File
Data
Data
R29
R30
R31
$3D
$3E
$00
$01
$02
$3F
WR
R0
R1
R2
…
RD
...
Prev. Address
T1
Address
T2
T3
Data Address Space
Internal SRAM
$00DE
$00DF
$001D
$001E
$001F
$005D
$005E
$005F
$0000
$0001
$0002
$0020
$0021
$0022
$0060
$0061
…
...
...
1477J–AVR–06/07
T4