HT48RA0-2/HT48CA0-2
Application Circuits
P
P
B
B
1
0
P
P
P
P
P
P
P
P
B
B
B
B
A
A
A
A
2
3
4
5
7
6
5
4
P
P
A
A
3
2
V
D
D
P
P
A
A
1
0
1
m
0 0 F
2
W
W
P
O
C
0
/
R
E
M
C
S
C
1
1
W
C
r
y
s
t
a
l
(
s
e
e
N
o
t
e
)
O
S
C
2
C
1
0
0
k
R
E
S
m
0 . 1 F
H
T
4
8
R
A
0
-
2
/
H
T
4
8
C
A
0
-
2
Note:
It is recommended that a 100mF decoupling capacitor is placed between VSS and VDD.
The resistance and capacitance for reset circuit should be designed to ensure that the VDD is stable and re-
mains in a valid range of the operating voltage before bringing RES to high.
The following table shows the C value according to different crystal values. (For reference only)
Crystal or Resonator
4MHz Crystal
C
0pF
4MHz Resonator
10pF
0pF
3.58MHz Crystal
3.58MHz Resonator
2MHz Crystal & Resonator
1MHz Crystal
25pF
25pF
35pF
300pF
300pF
300pF
480kHz Resonator
455kHz Resonator
429kHz Resonator
Rev. 1.50
12
July 23, 2004
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
