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參數(shù)資料
| 型號(hào)： | AT91SAM9G20B-CFU |
| 廠商： | Atmel |
| 文件頁數(shù)： | 13/42頁 |
| 文件大小： | 0K |
| 描述： | IC MCU ARM9 247-LFBGA |
| 產(chǎn)品培訓(xùn)模塊： | MCU Product Line Introduction |
| 標(biāo)準(zhǔn)包裝： | 240 |
| 系列： | SAM9G |
| 核心處理器： | ARM9 |
| 芯體尺寸： | 16/32-位 |
| 速度： | 400MHz |
| 連通性： | EBI/EMI，以太網(wǎng)，I²C，IrDA，ISI，MMC，SPI，SSC，UART/USART，USB |
| 外圍設(shè)備： | DMA，POR，PWM，WDT |
| 輸入/輸出數(shù)： | 96 |
| 程序存儲(chǔ)器容量： | 64KB（64K x 8） |
| 程序存儲(chǔ)器類型： | ROM |
| RAM 容量： | 96K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 0.9 V ~ 1.1 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 4x10b |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 247-TFBGA |
| 包裝： | 托盤 |
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20
6384DS–ATARM–13-Jan-10
AT91SAM9G20 Summary
A first level of address decoding is performed by the Bus Matrix, i.e., the implementation of the
Advanced High Performance Bus (AHB) for its Master and Slave interfaces with additional
features.
Decoding breaks up the 4G bytes of address space into 16 banks of 256 Mbytes. The banks 1 to
7 are directed to the EBI that associates these banks to the external chip selects EBI_NCS0 to
EBI_NCS7. Bank 0 is reserved for the addressing of the internal memories, and a second level
of decoding provides 1 Mbyte of internal memory area. Bank 15 is reserved for the peripherals
and provides access to the Advanced Peripheral Bus (APB).
Other areas are unused and performing an access within them provides an abort to the master
requesting such an access.
Each Master has its own bus and its own decoder, thus allowing a different memory mapping
per Master. However, in order to simplify the mappings, all the masters have a similar address
decoding.
Regarding Master 0 and Master 1 (ARM926 Instruction and Data), three different Slaves are
assigned to the memory space decoded at address 0x0: one for internal boot, one for external
boot, one after remap. Refer to Table 8-1, “Internal Memory Mapping,” on page 20 for details.
A complete memory map is presented in Figure 8-1 on page 19.
8.1
Embedded Memories
64-KByte ROM
– Single Cycle Access at full matrix speed
Two 16-Kbyte Fast SRAM
– Single Cycle Access at full matrix speed
8.1.1
Boot Strategies
Table 8-1 summarizes the Internal Memory Mapping for each Master, depending on the Remap
status and the BMS state at reset.
The system always boots at address 0x0. To ensure a maximum number of possibilities for boot,
the memory layout can be configured with two parameters.
REMAP allows the user to lay out the first internal SRAM bank to 0x0 to ease development. This
is done by software once the system has booted. When REMAP = 1, BMS is ignored. Refer to
the Bus Matrix Section for more details.
Table 8-1.
Internal Memory Mapping
Address
REMAP = 0
REMAP = 1
BMS = 1
BMS = 0
0x0000 0000
ROM
EBI_NCS0
SRAM0 16K
0x0010 0000
ROM
0x0020 0000
SRAM0 16K
0x0030 0000
SRAM1 16K
0x0050 0000
USB Host User Interface
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| AT91SAM9G20B-CU | 功能描述:ARM微控制器 - MCU 2x16K SRAM Ethernet USB Host Bus Intrfc RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 處理器系列:STM32F373xx 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:72 MHz 程序存儲(chǔ)器大小:256 KB 數(shù)據(jù) RAM 大小:32 KB 片上 ADC:Yes 工作電源電壓:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:LQFP-48 安裝風(fēng)格:SMD/SMT |
| AT91SAM9G20B-CU-999 | 功能描述:ARM微控制器 - MCU 2x16K SRAM Ethernet USB Host Bus Intrfc RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 處理器系列:STM32F373xx 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:72 MHz 程序存儲(chǔ)器大小:256 KB 數(shù)據(jù) RAM 大小:32 KB 片上 ADC:Yes 工作電源電壓:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:LQFP-48 安裝風(fēng)格:SMD/SMT |
| AT91SAM9G20-CU | 功能描述:ARM微控制器 - MCU 32-bit RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 處理器系列:STM32F373xx 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:72 MHz 程序存儲(chǔ)器大小:256 KB 數(shù)據(jù) RAM 大小:32 KB 片上 ADC:Yes 工作電源電壓:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:LQFP-48 安裝風(fēng)格:SMD/SMT |
| AT91SAM9G20-EK | 功能描述:開發(fā)板和工具包 - ARM 32-bit MCU Eval Kit RoHS:否 制造商:Arduino 產(chǎn)品:Development Boards 工具用于評估:ATSAM3X8EA-AU 核心:ARM Cortex M3 接口類型:DAC, ICSP, JTAG, UART, USB 工作電源電壓:3.3 V |
| AT91SAM9G25-BFU | 制造商:Atmel Corporation 功能描述:VFBGA, GREEN, IND TEMP, MRLA - Trays 制造商:Atmel Corporation 功能描述:IC MCU ARM9 64KB ROM 247VFBGA |
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