參數(shù)資料
型號: DS80CH11
廠商: DALLAS SEMICONDUCTOR
元件分類: Microcontroller
英文描述: 8-BIT, MICROCONTROLLER, PQFP128
封裝: TQFP-128
文件頁數(shù): 68/88頁
文件大?。?/td> 598K
代理商: DS80CH11
DS80CH11
011200 70/88
Table 12–3 is a summary of the bits relating to Slow Clock Mode and its operation.
ENTERING / EXITING SLOW CLOCK MODE Figure 12–1
ALLOW
HARDWARE TO CAUSE
A SWITCHBACK
?
SET SWB=1
CHECK
STATUS=0
INVOKE SLOW CLOCK MODE
CLOCK SPEED = 64 OR 1024
CD1, CD0=10 FOR 64
CD1, CD0=11 FOR 1024
OPERATE
WITHOUT CRYSTAL
?
DISABLE CRYSTAL?
XTOFF = 1
(NO FAST SWITCH
TO XTAL)
LOWEST POWER OPERATING STATE
ENTER SLOW CLOCK MODE
EXITING SLOW CLOCK MODE
SOFTWARE DECIDES
TO EXIT
SWB=1 AND EXTERNAL
ACTIVITY OCCURS
CD1, CD0 = 01 FOR 4
HARDWARE AUTOMATICALLY
SWITCHES CD1, CD0
CHECK
STATUS=0
CHECK AND CLEAR
IMPENDING ACTIVITY
DONE
N
Y
DONE
N
Y
XTOFF = 1
?
Y
XTOFF = 0
XTUP = 1
?
N
DONE
XT/RG=0
XT/RG=1
?
N
Y
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