ATMEGA163 View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

ATMEGA163

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

Atmel Corporation 

ATmega163(L)

In the different addressing modes these address registers have functions as fixed dis-

placement, automatic increment and decrement (see the descriptions for the different

instructions).

The ALU – Arithmetic

Logic Unit

The high-performance AVR ALU operates in direct connection with all the 32 general

purpose working registers. Within a single clock cycle, ALU operations between regis-

ters in the Register File are executed. The ALU operations are divided into three main

categories – arithmetic, logical, and bit-functions. ATmega163 also provides a powerful

multiplier supporting both signed/unsigned multiplication and fractional format. See the

Instruction Set section for a detailed description.

The In-System Self-

Programmable Flash

Program Memory

The ATmega163 contains 16K bytes On-chip In-System Self-Programmable Flash

memory for program storage. Since all instructions are 16- or 32-bit words, the Flash is

organized as 8K x 16. The Flash Program memory space is divided in two sections,

Boot Program section and Application Program section.

The Flash memory has an endurance of at least 1,000 write/erase cycles. The

ATmega163 Program Counter (PC) is 13 bits wide, thus addressing the 8,192 Program

Memory locations. The operation of Boot Program section and associated Boot Lock

bits for software protection are described in detail on page 134. See also page 154 for a

detailed description on Flash data serial downloading.

Constant tables can be allocated within the entire Program Memory address space (see

the LPM – Load Program Memory instruction description).

See also page 12 for the different Program Memory Addressing modes.

The SRAM Data Memory Figure 9 shows how the ATmega163 SRAM Memory is organized.

Figure 9. SRAM Organization

Register File

R0

R1

R2

...

Data Address Space

$0000

$0001

$0002

...

R29

R30

R31

I/O Registers

$00

$01

$02

...

$001D

$001E

$001F

$0020

$0021

$0022

...

$3D

$005D

$3E

$005E

$3F

$005F

Internal SRAM

$0060

$0061

...

$045E

$045F

11

1142E–AVR–02/03

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