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ATmega162 Datasheet(PDF) 274 Page - ATMEL Corporation

Part # ATmega162
Description  8-bit Microcontroller with 16K Bytes In-System Programmable Flash
PDF  324 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega162 Datasheet(HTML) 274 Page - ATMEL Corporation

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274
2513K–AVR–07/09
ATmega162/V
Figure 120. External Memory Timing (SRWn1 = 1, SRWn0 = 0)
Figure 121. External Memory Timing (SRWn1 = 1, SRWn0 = 1)(1)
Note:
1. The ALE pulse in the last period (T4 - T7) is only present if the next instruction accesses the
RAM (internal or external).
ALE
T1
T2
T3
WR
T6
A15:8
Address
Prev. addr.
DA7:0
Address
Data
Prev. data
XX
RD
DA7:0 (XMBK = 0)
Data
Address
System Clock (CLKCPU)
1
4
2
7
6
3a
3b
5
8
12
16
13
10
11
14
15
9
T4
T5
ALE
T1
T2
T3
WR
T7
A15:8
Address
Prev. addr.
DA7:0
Address
Data
Prev. data
XX
RD
DA7:0 (XMBK = 0)
Data
Address
System Clock (CLKCPU)
1
4
2
7
6
3a
3b
5
8
12
16
13
10
11
14
15
9
T4
T5
T6



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