參數(shù)資料
型號: XE8801AMI027LF
廠商: Semtech
文件頁數(shù): 120/135頁
文件大?。?/td> 0K
描述: IC DAS 16BIT FLASH 8K MTP 44LQFP
標(biāo)準(zhǔn)包裝: 800
系列: XE880x
應(yīng)用: 感測機
核心處理器: Coolrisc816?
程序存儲器類型: 閃存(22 kB)
控制器系列: XE8000
RAM 容量: 512 x 8
接口: UART,USRT
輸入/輸出數(shù): 24
電源電壓: 2.4 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 44-VFQFN 裸露焊盤
包裝: 托盤
供應(yīng)商設(shè)備封裝: 44-MLPQ(7x7)
產(chǎn)品目錄頁面: 585 (CN2011-ZH PDF)
配用: XE8000MP-ND - PROG BOARD AND PROSTART2 CARD
Semtech 2005
www.semtech.com
15-6
XE8801A – SX8801R
When UsrtEnWaitCond1 is 1, the S0 signal will be stretched in its low state after its falling edge if the condition 1
has been detected before (UsrtCond1=1). UsrtWaitS0 is then set to 1, indicating that the S0 line is forced low.
One can release S0 by writing to the RegUsrtBufferS1 register.
Figure 15-5 shows the sampling function implemented by the UsrtBufferS1 bit. The bit UsrtBufferS1 in
RegUsrtBufferS1 is the value of S1 sampled on PB[4] at the last rising edge of S0. The bit UsrtEdgeS0 in
RegUsrtEdgeS0 is set to one on the same S0 rising edge and is cleared by a read operation of the
RegUsrtBufferS1 register. The bit therefor indicates that a new value is present in the RegUsrtBufferS1 which
was not yet read.
S0
UsrtBufferS1
read Reg UsrtBufferS1
S1
UsrtEdgeS0
Figure 15-5: S1 sampling
Not
Recommended
for
New
Designs
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