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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)： | 13/22頁 |
| 文件大?。?/td> | 195K |
| 代理商： | AT91FR4042-CI |
13
AT91FR4042
2648D–ATARM–03/04
AT91 Flash Uploader
Software
All Flash-based AT91 devices are delivered with a pre-programmed software called the
AT91 Flash Uploader, which resides in the first sector of the embedded Flash. The
Flash Uploader allows programming to the embedded flash through a serial port. Either
of the on-chip USARTs can be used by the Flash Uploader.
Figure 3.
Flash Uploader
Flash Uploader Operations
The Flash Uploader requires the encapsulated Flash to be used as the AT91FR4042
boot memory and a valid clock to be applied to MCKI. After reset, the Flash Uploader
immediately recopies itself into the internal SRAM and jumps to it. The following opera-
tion requires this memory resource only. External accesses are performed only to
program the encapsulated Flash.
When starting, PIO input change interrupts are initialized on the RXD lines of both
USARTs. When an interrupt occurs, a Timer Counter channel is started. When the next
input change is detected on the RXD line, the Timer Counter channel is stopped. This is
how the first character length is measured and the USART can be initiated by taking into
account the ratio between the device master clock speed and the actual communication
baud rate speed.
The Programming System, then, can send commands and data following a proprietary
protocol for the Flash device to be programmed. It is up to the Programming System to
erase and program the first sector of the Flash as the last step of the operation, in order
to reduce, to a minimum, the risk that the Flash Uploader is erased and the power sup-
ply shuts down.
Note that in the event that the Flash Uploader is erased from the first sector while the
new final application is not yet programmed, and while the target system power supply
is switched off, it leads to a non-recoverable error and the AT91FR4042 cannot be re-
programmed by using the Flash Uploader.
AT91R40008
USART0
USART1
AT49BV4096A
Flash Memory
AT91FR4042
Target System
NCSF
NCS0
Programming System
Serial
Port
RS232
Driver
RXD0
RXD1
相關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) |
相關代理商/技術參數(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)轉換器:A/D 11x10b 振蕩器型:內部 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)轉換器:- 振蕩器型:內部 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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