HT49R30A-1 View Datasheet(PDF) - Holtek Semiconductor
Part Name
Description
MFG CO.
'HT49R30A-1' PDF : 41 Pages View PDF
Application Circuits
RC oscillator application
V DD
470p.
24kW
~1M W
O SC1
V DD
S E G 0~17
C O M 0~3
fS Y S /4
V DD
100kW
10kW
0 .1 m .
V LC D
O SC2
C1
C2
RES
H T 4 9 R 3 0 A -1 / V 1
H T 4 9 C 3 0 -1
V2
O SC3
O SC4
IN T 0
IN T 1
TM R
P A 0~P A 7
P B 0~P B 5
LC D
PANEL
LC D P ow er
S u p p ly
0 .1 m .
0 .1 m .
0 .1 m .
HT49R30A-1/HT49C30-1/HT49C30L
Crystal oscillator application
C1
C2
V DD
100kW
10kW
0 .1 m .
O SC1
O SC2
S E G 0~17
C O M 0~3
V LC D
C1
C2
RES
H T 4 9 R 3 0 A -1 / V 1
H T 4 9 C 3 0 -1
V2
O SC3
O SC4
IN T 0
IN T 1
TM R
P A 0~P A 7
P B 0~P B 5
LC D
PANEL
LC D P ow er
S u p p ly
0 .1 m .
0 .1 m .
0 .1 m .
32768Hz crystal oscillator application
O SC1
O SC2
S E G 0~17
C O M 0~3
V DD
100kW
10kW
0 .1 m .
V LC D
RES
C1
C2
H T 4 9 R 3 0 A -1 /
H T 4 9 C 3 0 -1 V 1
O SC3
V2
O SC4
IN T 0
P A 0~P A 7
IN T 1
TM R
P B 0~P B 5
LC D
PANEL
LC D P ow er
S u p p ly
0 .1 m .
0 .1 m .
0 .1 m .
Note:
C1=C2=300pF if fSYS < 1MHz, Otherwise, C1=C2=0
The resistance and capacitance for reset circuit should be designed in such a way as to ensure that the VDD is
stable and remains within a valid operating voltage range before bringing RES to high.
Rev. 1.10
23
September 25, 2002
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