PATENTED
HT1623
T
i
m
e
B
a
s
e
I
R
Q
T
I
M
E
R
E
N
/
D
I
S
C
l
o
c
k
S
o
u
r
c
e
6
/
2
5
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 re-
set 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
Rev. 1.90
9
July 22, 2011
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
