ATMEGA2561V ATMEL [ATMEL Corporation], ATMEGA2561V Datasheet - Page 388

• Manufacturer Part Number: ATMEGA2561V
• Description: 8-bit Microcontroller with 64K/128K/256K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

388
ATmega640/1280/1281/2560/2561
Figure 163. External Memory Timing (SRWn1 = 0, SRWn0 = 0
Figure 164. External Memory Timing (SRWn1 = 0, SRWn0 = 1)
System Clock (CLK
System Clock (CLK
DA7:0 (XMBK = 0)
DA7:0 (XMBK = 0)
DA7:0
A15:8
CPU
ALE
WR
RD
DA7:0
A15:8
CPU
)
ALE
WR
RD
Prev. addr.
Prev. data
)
Prev. addr.
Prev. data
T1
T1
1
Address
Address
4
2
5
T2
6
1
3a
3b
Address
Address
XX
4
7
2
8
13
5
T2
6
3a
3b
10
XX
Address
7
8
T3
13
10
Address
Data
15
Data
16
12
9
T3
15
12
Data
16
Data
9
T4
11
11
T4
14
T5
14
2549K–AVR–01/07