參數(shù)資料
型號(hào): 7544
英文描述: 3.3V LDO POSITVE VOLTAGE REGULATOR 2% TOL.
中文描述: 7544Group數(shù)據(jù)表數(shù)據(jù)表503K/JUN.25.03
文件頁(yè)數(shù): 23/54頁(yè)
文件大?。?/td> 503K
代理商: 7544
Rev.1.02 2003.06.25 page 23 of 53
7544 Group
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
Fig. 22 Structure of timer X mode register
Fig. 23 Timer count source set register
Timer X mode register
(TXM : address 002B
16
, initial value: 00
16
)
Timer X operating mode bits
b1 b0
0 0 : Timer mode
0 1 : Pulse output mode
1 0 : Event counter mode
1 1 : Pulse width measurement mode
CNTR
0
active edge switch bit
0 : Interrupt at falling edge
Count at rising edge
(in event counter mode)
1 : Interrupt at rising edge
Count at falling edge
(in event counter mode)
Timer X count stop bit
0 : Count start
1 : Count stop
P0
3
/TX
OUT
output valid bit
0 : Output invalid (I/O port)
1 : Output valid (Inverted CNTR
0
output)
Disable (return
0
when read)
b7 b0
Timer count source set register 1
(TCSS : address 002E
16
, initial value: 00
16
)
Timer X count source selection bits
b1 b0
0 0 : f(X
IN
)/16
0 1 : f(X
IN
)/2
1 0 : f(X
IN
) (Note)
1 1 : Not available
b7 b0
Disable (return
0
when read)
Fix this bit to
0
.
Disable (return
0
when read)
Note :
f(X
IN
) can be used as timer X count source when using
a ceramic resonator or ring oscillator.
Do not use it at RC oscillation.
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