HT12A/HT12E
Flowchart
·
HT12A
P o w e r o n
·
HT12E
P o w e r o n
S ta n d b y m o d e
S ta n d b y m o d e
N o
D a ta e n a b le ?
Y e s
D a ta w ith c a r r ie r
s e r ia l o u tp u t
N o
T r a n s m is s io n
e n a b le d ?
Y e s
4 d a ta w o rd s
tr a n s m itte d
D a ta s till e n a b le d ?
N o
L /M B = G N D ?
N o
S e n d th e
la s t c o d e
Y e s
N o
T r a n s m is s io n
s till e n a b le d
Y e s
Y e s
4 d a ta w o rd s
tr a n s m itte d
c o n tin u o u s ly
S e n d
²
1
²
7 tim e s fo r
a ll o f th e d a ta c o d e s
Note:
D8~D11 are transmission enables of the HT12A.
TE is the transmission enable of the HT12E.
Rev. 1.10
8
January 24, 2003
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
