參數(shù)資料
型號: MX53L06402L-50
廠商: MACRONIX INTERNATIONAL CO LTD
元件分類: PROM
英文描述: FLASH 2.7V PROM CARD, XMA7
封裝: CRAD-7
文件頁數(shù): 26/55頁
文件大?。?/td> 262K
代理商: MX53L06402L-50
32
P/N: PM1043
REV. 1.0, NOV. 25, 2003
MX53L06402
Read Time-out Conditions
The time period after which a time-out condition for read operations occurs are (card independent) 10 times longer
than the typical access times for these operations given below. A card shall complete the command within this time
period, or give up and return an error message. If the host does not get a response within the defined time-out it should
assume the card is not going to respond any more and try to recover (e.g. reset the card, power cycle, reject, etc.).
The typical access times are defined as follows:
Read
The read access time is defined as the sum of the two times given by the CSD parameters TAAC and NSAC. These
card parameters define the typical delay between the end bit of the read command and the start bit of the data block.
This number is card dependent.
Read ahead in Multiple Block read operation
In Multiple Block read operations, in order to improve read performance, the card may fetch data from the memory
array, ahead of the host. In this case, when the host is reading the last addresses of the memory, the card attempts
to fetch data beyond the last physical memory address and generates an OUT_OF_RANGE error.
Therefore, even if the host times the stop transmission command to stop the card immediately after the last byte of
data was read, the card may already have generated the error, and it will show in the response to the stop transmission
command. The host should ignore this error.
7.5.8 Memory Array Partitioning
Same as for MultiMediaCard mode.
7.5.9 Application Specific commands
Identical to MultiMediaCard mode with the exception of the APP_CMD status bit, which is not available in SPI.
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