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參數(shù)資料
| 型號： | AT91FR4042-CI |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | AT91 ARM Thumb Microcontrollers |
| 中文描述： | 32-BIT, FLASH, 70 MHz, RISC MICROCONTROLLER, PBGA121 |
| 封裝： | 10 X 10 MM, 1.20 MM HEIGHT, BGA-121 |
| 文件頁數(shù)： | 14/22頁 |
| 文件大?。?/td> | 195K |
| 代理商： | AT91FR4042-CI |
14
AT91FR4042
2648D–ATARM–03/04
Programming System
Atmel provides a free Host Loader that runs on an IBM
compatible PC under Win-
dows
95 or Windows
98 operating system. It can be downloaded from the Atmel Web
site and requires only a serial cable to connect the Host to the Target.
Communications can be selected on either COM1 or COM2 and the serial link speed is
limited to 115200 bauds. Because the serial link is the bottleneck in this configuration,
the Flash programming lasts 110 seconds per Mbyte.
Reduced programming time can be achieved by using a faster programming system. An
AT91 Evaluation Board is capable of running a serial link at up to 500 Kbits/sec and can
match the fastest programming allowed by the Flash, for example, about 40 seconds
per Mbyte when the word programming becomes the bottleneck.
Peripherals
The AT91FR4042 peripherals are connected to the 32-bit wide Advanced Peripheral
Bus.
Peripheral registers are only word accessible. Byte and half-word accesses are not sup-
ported. If a byte or a half-word access is attempted, the memory controller automatically
masks the lowest address bits and generates a word access.
Each peripheral has a 16-Kbyte address space allocated (the AIC only has a 4-Kbyte
address space).
Peripheral Registers
The following registers are common to all peripherals:
Control Register – write only register that triggers a command when a one is written
to the corresponding position at the appropriate address. Writing a zero has no
effect.
Mode Register – read/write register that defines the configuration of the peripheral.
Usually has a value of 0x0 after a reset.
Data Registers – read and/or write register that enables the exchange of data
between the processor and the peripheral.
Status Register – read only register that returns the status of the peripheral.
Enable/Disable/Status Registers are shadow command registers. Writing a one in
the Enable Register sets the corresponding bit in the Status Register. Writing a one
in the Disable Register resets the corresponding bit and the result can be read in the
Status Register. Writing a bit to zero has no effect. This register access method
maximizes the efficiency of bit manipulation, and enables modification of a register
with a single non-interruptible instruction, replacing the costly read-modify-write
operation.
Unused bits in the peripheral registers must be written at 0 for upward compatibility.
These bits read 0.
Peripheral Interrupt Control
The Interrupt Control of each peripheral is controlled from the status register using the
interrupt mask. The status register bits are ANDed to their corresponding interrupt mask
bits and the result is then ORed to generate the Interrupt Source signal to the Advanced
Interrupt Controller.
The interrupt mask is read in the Interrupt Mask Register and is modified with the Inter-
rupt Enable Register and the Interrupt Disable Register. The enable/disable/status (or
mask) makes it possible to enable or disable peripheral interrupt sources with a non-
interruptible single instruction. This eliminates the need for interrupt masking at the AIC
or Core level in real-time and multi-tasking systems.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AT91FR4081 | AT91 ARM Thumb Microcontrollers |
| AT91FR4081-33CI | AT91 ARM Thumb Microcontrollers |
| AT91M40008 | Incorporates the ARM7TDMI⑩ ARM?? Thumb?? Processor Core |
| AT91M40100 | ARM THUMB - Based Microcontroller(基于ARM THUMB的微控制器) |
| AT91M40403 | ARM THUMB - Based Microcontroller(基于ARM THUMB的微控制器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT91FR4042-CI SL383 | 功能描述:IC ARM MCU 512FLASH 16BIT 121BGA RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:AT91 標準包裝:1,500 系列:AVR® ATtiny 核心處理器:AVR 芯體尺寸:8-位 速度:16MHz 連通性:I²C，LIN，SPI，UART/USART，USI 外圍設備:欠壓檢測/復位，POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):16 程序存儲器容量:8KB（4K x 16） 程序存儲器類型:閃存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 11x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:帶卷 (TR) |
| AT91FR4042-CI-T | 功能描述:IC MCU 32BIT 512KB FLASH 121BGA 制造商:microchip technology 系列:AT91 包裝:帶卷（TR） 零件狀態(tài):停產(chǎn) 核心處理器:ARM7? 核心尺寸:16/32-位 速度:75MHz 連接性:EBI/EMI，UART/USART 外設:WDT I/O 數(shù):32 程序存儲容量:512KB（256K x 16） 程序存儲器類型:閃存 EEPROM 容量:- RAM 容量:256K x 8 電壓 - 電源（Vcc/Vdd）:1.65 V ~ 1.95 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器類型:外部 工作溫度:-40°C ~ 85°C（TA） 封裝/外殼:121-TFBGA 供應商器件封裝:121-BGA（10x10） 基本零件編號:AT91FR4042 標準包裝:1,000 |
| AT91FR4081 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:AT91 ARM Thumb Microcontrollers |
| AT91FR4081-33CI | 功能描述:IC ARM7 MCU 1M FLASH 120 BGA RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:AT91 標準包裝:9 系列:87C 核心處理器:8051 芯體尺寸:8-位 速度:40/20MHz 連通性:UART/USART 外圍設備:POR，WDT 輸入/輸出數(shù):32 程序存儲器容量:32KB（32K x 8） 程序存儲器類型:OTP EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:0°C ~ 70°C 封裝/外殼:40-DIP（0.600"，15.24mm） 包裝:管件 |
| AT91FR4081-40CI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microcontroller |
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