參數(shù)資料
型號(hào): AT91SAM7A3-AU
廠(chǎng)商: Atmel
文件頁(yè)數(shù): 5/39頁(yè)
文件大?。?/td> 0K
描述: IC ARM7 MCU FLASH 256K 100LQFP
產(chǎn)品培訓(xùn)模塊: SAM9 MPU Boot Solutions & Application Deployment
MCU Product Line Introduction
標(biāo)準(zhǔn)包裝: 90
系列: AT91SAM
核心處理器: ARM7
芯體尺寸: 16/32-位
速度: 60MHz
連通性: CAN,I²C,MMC,SPI,SSC,UART/USART
外圍設(shè)備: POR,PWM,WDT
輸入/輸出數(shù): 62
程序存儲(chǔ)器容量: 256KB(256K x 8)
程序存儲(chǔ)器類(lèi)型: 閃存
RAM 容量: 32K x 8
電壓 - 電源 (Vcc/Vdd): 1.65 V ~ 1.95 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 100-LQFP
包裝: 托盤(pán)
配用: AT91SAM-ICE-ND - EMULATOR FOR AT91 ARM7/ARM9
AT91SAM7A3-EK-ND - KIT EVAL FOR AT91SAM7A3
13
6042DS–ATARM–14-Dec-06
AT91SAM7A3
7.
Processor and Architecture
7.1
ARM7TDMI Processor
RISC Processor Based on ARMv4T Von Neumann Architecture
– Runs at up to 60 MHz, providing 0.9 MIPS/MHz
Two instruction sets
– ARM high-performance 32-bit Instruction Set
– Thumb high code density 16-bit Instruction Set
Three-stage pipeline architecture
– Instruction Fetch (F)
– Instruction Decode (D)
– Execute (E)
7.2
Debug and Test Features
Integrated EmbeddedICE
(embedded in-circuit emulator)
– Two watchpoint units
– Test access port accessible through a JTAG protocol
– Debug communication channel
Debug Unit
–Two-pin UART
– Debug communication channel interrupt handling
– Chip ID Register
IEEE1149.1 JTAG Boundary-scan on all digital pins
7.3
Memory Controller
Bus Arbiter
– Handles requests from the ARM7TDMI and the Peripheral Data Controller
Address Decoder Provides Selection Signals for
– Three internal 1Mbyte memory areas
– One 256 Mbyte embedded peripheral area
Abort Status Registers
– Source, Type and all parameters of the access leading to an abort are saved
– Facilitates debug by detection of bad pointers
Misalignment Detector
– Alignment checking of all data accesses
– Abort generation in case of misalignment
Remap Command
– Remaps the Internal SRAM in place of the embedded non-volatile memory
– Allows handling of dynamic exception vectors
16-area Memory Protection Unit
– Individually programmable size between 1K Bytes and 1M Bytes
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