參數(shù)資料
型號(hào): AT91M55800A-33CJ-999
廠商: Atmel
文件頁數(shù): 9/28頁
文件大?。?/td> 0K
描述: IC MCU 32BIT RISC 176LFBGA
標(biāo)準(zhǔn)包裝: 1
系列: AT91
核心處理器: ARM7
芯體尺寸: 16/32-位
速度: 33MHz
連通性: EBI/EMI,SPI,UART/USART
外圍設(shè)備: POR,WDT
輸入/輸出數(shù): 58
程序存儲(chǔ)器類型: ROMless
RAM 容量: 8K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b; D/A 2x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 176-LFBGA
包裝: 剪切帶 (CT)
其它名稱: AT91M55800A-33CJ-999CT
17
1745FS–ATARM–18-Apr-06
AT91M55800A Summary
configure up to eight 16-Mbyte banks. In all cases it supports byte, half-word and word aligned
accesses.
For each of these banks, the user can program:
Number of wait states
Number of data float times (wait time after the access is finished to prevent any bus
contention in case the device is too long in releasing the bus)
Data bus width (8-bit or 16-bit)
With a 16-bit wide data bus, the user can program the EBI to control one 16-bit device
(Byte Access Select Mode) or two 8-bit devices in parallel that emulate a 16-bit memory
(Byte-write Access mode).
The External Bus Interface features also the Early Read Protocol, configurable for all the
devices, that significantly reduces access time requirements on an external device.
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