Ricoh R5C841 Manual Do Utilizador

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R5C841 PCI-CardBus/IEEE 1394/SD Card/Memory Stick/xD/ExpressCard               Data Sheet           
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4.24   Internal Regulator 
The R5C841 has an internal regulator, which converts the single 3.3V power into the power for 
the internal core logic. REGEN# signal enables/disables an internal regulator. The following is the 
recommended circuit diagram.   
   
R5C841 
0.01uF  0.1uF 0.01uF  10uF 
0.01uF 0.01uF  0.47uF 0.47uF 
0 ohm 
open 
JP 
short 
from Regulator 
(1.8V) 
Regulator Disable Mode 
VCC_RIN
VCC_ROUT
REGEN#
 
 
 
   
R5C841 
0.01uF  0.1uF 0.01uF  10uF 
0.01uF 0.01uF  0.47uF 0.47uF 
open 
100k ohm 
JP 
open 
from Regulator 
(3.3V) 
Regulator Enable Mode 
VCC_RIN
VCC_ROUT
REGEN#