ATmega162 datasheet(29/324 Pages) ATMEL

Teilenummer	ATmega162

Bauteilbeschribung	8-bit Microcontroller with 16K Bytes In-System Programmable Flash

PDF	324 Pages

Scroll/Zoom	100%

Hersteller	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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29 / 324 page

2513K–AVR–07/09

ATmega162/V

Figure 14. External Data Memory Cycles with SRWn1 = 0 and SRWn0 = 1

(1)

Note:

1. SRWn1 = SRW11 (upper sector) or SRW01 (lower sector), SRWn0 = SRW10 (upper sector) or

SRW00 (lower sector)

The ALE pulse in period T5 is only present if the next instruction accesses the RAM (internal

or external).

Figure 15. External Data Memory Cycles with SRWn1 = 1 and SRWn0 = 0(1)

Note:

1. SRWn1 = SRW11 (upper sector) or SRW01 (lower sector), SRWn0 = SRW10 (upper sector) or

SRW00 (lower sector).

The ALE pulse in period T6 is only present if the next instruction accesses the RAM (internal

or external).

ALE

A15:8

Address

Prev. addr.

DA7:0

Address

Data

Prev. data

DA7:0 (XMBK = 0)

Data

Address

Data

Prev. data

Address

DA7:0 (XMBK = 1)

System Clock (CLKCPU)

ALE

A15:8

Address

Prev. addr.

DA7:0

Address

Data

Prev. data

DA7:0 (XMBK = 0)

Data

Address

Data

Prev. data

Address

DA7:0 (XMBK = 1)

System Clock (CLKCPU)

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