PATENTED
HT1626
T
i
m
e
B
a
s
e
I
R
Q
T
I
M
E
R
E
N
/
D
I
S
/
2
5
6
e
C
l
o
c
k
S
o
u
r
c
W
D
D
T
E
N
/
D
I
S
V
D
C
L
R
T
i
m
e
r
Q
D
W
D
T
I
R
Q
E
N
/
D
I
S
/
4
C
K
R
C
L
R
W
D
T
Timer and WDT Configurations
The following are the data mode ID and the command
mode ID:
If successive commands have been issued, the com-
mand mode ID can be omitted. While the system is op-
erating in the non-successive command or the
non-successive address data mode, the CS pin should
be set to ²1², and the previous operation mode will be
reset also. The CS pin returns to ²0², a new operation
mode ID should be issued first.
Operation
Mode
Data
ID
READ
1 1 0
1 0 1
1 0 1
1 0 0
WRITE
Data
READ-MODIFY-WRITE
COMMAND
Data
Command
Name
TONE OFF
TONE 4K
TONE 2K
Command Code
0000-1000-X
Function
Turn-off tone output
010X-XXXX-X
0110-XXXX-X
Turn-on tone output, tone frequency is 4kHz
Turn-on tone output, tone frequency is 2kHz
Timing Diagrams
READ Mode (Command Code : 1 1 0)
C
S
W
R
R
D
0
A
A
7
6
A
5
A
4
A
3
A
2
A
1
A
0
D
D
0
2
D
D
1
3
0
A
7
A
6
A
5
A
4
A
3
A
2
A
1
A
0
D
D
0
2
D
1
1
1
1
1
D
A
T
A
M
e
m
o
r
y
A
d
d
r
e
D
s
s
a
t
1
a
(
(
M
M
A
A
1
1
)
)
M
e
m
o
r
y
A
d
d
r
e
D
s
a
s
t
a
2
(
(
M
M
A
READ Mode (Successive Address Reading)
C
W
R
S
R
D
0
A
7
A
5
A
3
D
2
D
3
D
2
D
3
D
2
D
3
D
2
D
3
0
A
6
A
4
A
2
A
1
A
0
D
0
D
M
D
1
0
D
1
D
0
D
1
D
0
D
1
D
1
1
D
A
T
A
M
e
m
o
r
y
A
d
d
r
e
D
s
a
s
t
a
(
(
A
M
D
)
A
a
)
t
a
(
M
A
+
1
)
D
a
t
a
(
M
A
Rev. 1.60
9
November 9, 2010
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
