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参数资料
| 型号： | AT90S4434-8JI |
| 厂商： | ATMEL CORP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | -bit AVR Microcontroller with 8K Bytes In- System Programmable Flash |
| 中文描述： | 8-BIT, FLASH, 8 MHz, RISC MICROCONTROLLER, PQCC44 |
| 封装： | PLASTIC, LCC-44 |
| 文件页数： | 5/10页 |
| 文件大小： | 482K |
| 代理商： | AT90S4434-8JI |
AT90S/LS4434 and AT90S/LS8535
5
The ALU supports arithmetic and logic functions between
registers or between a constant and a register. Single reg-
ister operations are also executed in the ALU. Figure 3
shows the AT90S4434/8535 AVR Enhanced RISC micro-
controller architecture.
In addition to the register operation, the conventional mem-
ory addressing modes can be used on the register file as
well. This is enabled by the fact that the register file is
assigned the 32 lowermost Data Space addresses ($00 -
$1F), allowing them to be accessed as though they were
ordinary memory locations.
The I/O memory space contains 64 addresses for CPU
peripheral functions as Control Registers, Timer/Counters,
A/D-converters, and other I/O functions. The I/O Memory
can be accessed directly, or as the Data Space locations
following those of the register file, $20 - $5F.
The AVR uses a Harvard architecture concept - with sepa-
rate memories and buses for program and data. The pro-
gram memory is executed with a single level pipelining.
While one instruction is being executed, the next instruction
is pre-fetched from the program memory. This concept
enables instructions to be executed in every clock cycle.
The program memory is in-system downloadable Flash
memory.
With the relative jump and call instructions, the whole
2K/4K address space is directly accessed. Most AVR
instructions have a single 16-bit word format. Every pro-
gram memory address contains a 16- or 32-bit instruction.
During interrupts and subroutine calls, the return address
program counter (PC) is stored on the stack. The stack is
effectively allocated in the general data SRAM, and conse-
quently the stack size is only limited by the total SRAM size
and the usage of the SRAM. All user programs must initial-
ize the SP in the reset routine (before subroutines or inter-
rupts are executed). The 9-bit stack pointer SP is read/write
accessible in the I/O space.
The 256/512 bytes data SRAM can be easily accessed
through the five different addressing modes supported in
the AVR architecture.
The memory spaces in the AVR architecture are all linear
and regular memory maps.
Figure 4.
Memory Maps
32 Gen. Purpose
Working Registers
64 I/O Registers
Internal SRAM
(256/512 x 8)
$0000
$001F
$0020
$005F
$0060
$015F/$025F
$000
$7FF/$FFF
Data Memory
Program Memory
Program Flash
(2K/4K x 16)
EEPROM
(256/512 x 8)
$0000
$1F/$FF
Data Memory
相关PDF资料 |
PDF描述 |
|---|---|
| AT90S4434-8PI | -bit AVR Microcontroller with 8K Bytes In- System Programmable Flash |
| AT90S8535-8AC | -bit AVR Microcontroller with 8K Bytes In- System Programmable Flash |
| AT90S8535-8AI | -bit AVR Microcontroller with 8K Bytes In- System Programmable Flash |
| AT90S8535-8JC | -bit AVR Microcontroller with 8K Bytes In- System Programmable Flash |
| AT90S8535-8JI | -bit AVR Microcontroller with 8K Bytes In- System Programmable Flash |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AT90S4434-8PC | 制造商:Atmel Corporation 功能描述: 制造商:Atmel Corporation 功能描述:MicroController, 8-Bit, 40 Pin, Plastic, DIP |
| AT90S4434-8PI | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-Bit Microcontroller with 4K/8K Bytes In-System Programmable Flash |
| AT90S8515 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-Bit Microcontroller with 8K bytes In-System Programmable Flash |
| AT90S8515_01 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Microcontroller with 8K Bytes In-System Programmable Flash |
| AT90S8515-4AC | 功能描述:8位微控制器 -MCU 8K Flash 3V RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
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