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型號(hào)：	MQ80C32-20
廠商：	ATMEL CORP
元件分類：	微控制器/微處理器
英文描述：	8-BIT, 20 MHz, MICROCONTROLLER, CQFP44
封裝：	CERAMIC, QFP-44
文件頁(yè)數(shù)：	325/1185頁(yè)
文件大?。?/td>	5451K
代理商：	MQ80C32-20

SAM9G45 [DATASHEET]

6438K–ATARM–12-Feb-13

Ready Mode: The NWAIT signal indicates the availability of the external device at the end of the pulse of the controlling

read or write signal, to complete the access. If high, the access normally completes. If low, the access is extended until

NWAIT returns high.

BAT: Byte Access Type

This field is used only if DBW defines a 16- or 32-bit data bus.

1: Byte write access type:

– Write operation is controlled using NCS, NWR0, NWR1, NWR2, NWR3.

– Read operation is controlled using NCS and NRD.

0: Byte select access type:

– Write operation is controlled using NCS, NWE, NBS0, NBS1, NBS2 and NBS3

– Read operation is controlled using NCS, NRD, NBS0, NBS1, NBS2 and NBS3

DBW: Data Bus Width

TDF_CYCLES: Data Float Time

This field gives the integer number of clock cycles required by the external device to release the data after the rising edge

of the read controlling signal. The SMC always provide one full cycle of bus turnaround after the TDF_CYCLES period. The

external bus cannot be used by another chip select during TDF_CYCLES + 1 cycles. From 0 up to 15 TDF_CYCLES can

TDF_MODE: TDF Optimization

1: TDF optimization is enabled.

– The number of TDF wait states is optimized using the setup period of the next read/write access.

0: TDF optimization is disabled.

– The number of TDF wait states is inserted before the next access begins.

PMEN: Page Mode Enabled

1: Asynchronous burst read in page mode is applied on the corresponding chip select.

0: Standard read is applied.

PS: Page Size

If page mode is enabled, this field indicates the size of the page in bytes.

Data Bus Width

Page Size

16-byte page

32-byte page

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相關(guān)代理商/技術(shù)參數(shù)	參數(shù)描述
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MQ82380-20	制造商:Rochester Electronics LLC 功能描述:- Bulk
MQ82380-20/R	制造商:Rochester Electronics LLC 功能描述:
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