ATMEGA8515-16AU datasheet(17/254 Pages) ATMEL

Part #	ATMEGA8515-16AU

Description	8-bit AVR Microcontroller with 8K Bytes In-System Programmable Flash

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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17

ATmega8515(L)

2512G–AVR–03/05

Figure 9. Data Memory Map

Data Memory Access Times

This section describes the general access timing concepts for internal memory access.

The internal data SRAM access is performed in two clk

CPU cycles as described in Figure

10.

Figure 10. On-chip Data SRAM Access Cycles

32 Registers

64 I/O Registers

Internal SRAM

(512 x 8)

$0000 - $001F

$0020 - $005F

$0260

$025F

$FFFF

$0060

Data Memory

External SRAM

(0 - 64K x 8)

clk

WR

RD

Data

Address

Address Valid

T1

T2

T3

Compute Address

CPU

Memory Access Instruction

Next Instruction

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