參數(shù)資料
型號: ATMEGA103-6AI
廠商: Atmel
文件頁數(shù): 2/141頁
文件大小: 0K
描述: IC MCU 128K 6MHZ A/D IT 64TQFP
產(chǎn)品培訓(xùn)模塊: megaAVR Introduction
標準包裝: 90
系列: AVR® ATmega
核心處理器: AVR
芯體尺寸: 8-位
速度: 6MHz
連通性: SPI,UART/USART
外圍設(shè)備: POR,PWM,WDT
輸入/輸出數(shù): 32
程序存儲器容量: 128KB(64K x 16)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 4K x 8
RAM 容量: 4K x 8
電壓 - 電源 (Vcc/Vdd): 4 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 64-TQFP
包裝: 托盤
配用: ATSTK501-ND - ADAPTER KIT FOR 64PIN AVR MCU
10
ATmega103(L)
0945I–AVR–02/07
X-register, Y-register and Z-
register
The registers R26..R31 have some added functions to their general purpose usage.
These registers are address pointers for indirect addressing of the SRAM. The three
indirect address registers X, Y, and Z are defined as:
Figure 6. X-, Y-, and Z-registers
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).
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.
ISP Flash Program
Memory
The ATmega103(L) contains 128K bytes of On-chip In-System Programmable Flash
memory for program storage. Since all instructions are single or double 16-bit words, the
Flash is organized as 64K x 16. The Flash memory has an endurance of at least 1000
write/erase cycles.
Constant tables can be allocated in the entire Program memory space (see the LPM –
Load Program Memory and ELPM – Extended Load Program Memory instruction
descriptions).
SRAM Data Memory
The ATmega103(L) supports two different configurations for the SRAM Data memory as
listed in Table 1.
Note:
When using 64K of external SRAM, 60K will be available.
15
0
X-register
7
0
7
0
R27 ($1B)
R26 ($1A)
15
0
Y-register
7
0
7
0
R29 ($1D)
R28 ($1C)
15
0
Z-register
7
0
7
0
R31 ($1F)
R30 ($1E)
Table 1. Memory Configurations
Configuration
Internal SRAM Data Memory
External SRAM Data Memory
A
4000
None
B
4000
up to 64K
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