ATMEGA2561V ATMEL [ATMEL Corporation], ATMEGA2561V Datasheet - Page 21
ATMEGA2561V
Manufacturer Part Number
ATMEGA2561V
Description
8-bit Microcontroller with 64K/128K/256K Bytes In-System Programmable Flash
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.ATMEGA2561V.pdf
(449 pages)
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Data Memory Access Times
2549K–AVR–01/07
all these addressing modes. The Register File is described in “General Purpose Regis-
ter File” on page 13.
Table 4. Data Memory Map
This section describes the general access timing concepts for internal memory access.
The internal data SRAM access is performed in two clk
12.
Figure 12. On-chip Data SRAM Access Cycles
Address
clk
Data
Data
WR
CPU
RD
Address (HEX)
60 - 1FF
20 - 5F
0 - 1F
FFFF
21FF
2200
Compute Address
ATmega640/1280/1281/2560/2561
200
T1
Memory Access Instruction
416 External I/O Registers
64 I/O Registers
External SRAM
Internal SRAM
32 Registers
(0 - 64K x 8)
(8192 x 8)
Address valid
T2
CPU
cycles as described in Figure
Next Instruction
T3
21
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