参数资料
型号: AT90S8535-8PI
厂商: Atmel
文件页数: 2/127页
文件大小: 0K
描述: IC MCU 8K FLSH 8MHZ A/D IT 40DIP
标准包装: 18
系列: AVR® 90S
核心处理器: AVR
芯体尺寸: 8-位
速度: 8MHz
连通性: SPI,UART/USART
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 32
程序存储器容量: 8KB(4K x 16)
程序存储器类型: 闪存
EEPROM 大小: 512 x 8
RAM 容量: 512 x 8
电压 - 电源 (Vcc/Vdd): 4 V ~ 6 V
数据转换器: A/D 8x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 40-DIP(0.600",15.24mm)
包装: 管件
10
AT90S/LS8535
1041H–11/01
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 Data Space. The
three indirect address registers, X, Y, and Z, are defined in Figure 7.
Figure 7. X-, Y-, and Z-register
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.
In-System Programmable
Flash Program Memory
The AT90S8535 contains 8K bytes On-chip, In-System Programmable Flash memory
for program storage. Since all instructions are 16- or 32-bit words, the Flash is orga-
nized as 4K x 16. The Flash memory has an endurance of at least 1000 write/erase
cycles. The AT90S8535 Program Counter (PC) is 12 bits wide, thus addressing the
4096 program memory addresses.
See page 99 for a detailed description on Flash data downloading.
See page 12 for the different program memory addressing modes.
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)
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