HT6240_02 Datasheet, PDF (1/16 Pages) Holtek Semiconductor Inc – Infrared Remote Encoder

HT6240-002
Infrared Remote Encoder
Features
· Operating voltage: 2.2V~3.6V
· Low power consumption
· Few external parts
· 20/24-pin SOP package
Applications
· Television and video cassette recorder
controllers
· Garage door controllers
· Car door controllers
· Security systems
· Other remote control systems
General Description
HT6240-002 is designed as infrared remote encoders,
usually applied to TV systems. The 4´8 key matrix input
and the extension bit input can transmit a max. of 256 in-
structions. HT6240-002 have two different packages:
20-pin SOP and 24-pin SOP.
Block Diagram
PRB
O SCI
O SCO
TEST
O SC
TEST
M ODE
3´2²
D u ty 1 /3
10´2⁸
D iv id e r
K ey S can
O .0
D r iv e r
D ecoder
O .7
O u tp u t
S ta g e
CT
IE 0
IE 1
IE 2
IE 3
D ATA
IE -K E Y
E ncoder
8 - B it S h ift
R e g is te r
C o n tro l
U n it
C u s to m C o d e
& D A TA C ode
L a tc h
P a r a lle l to
S e r ia l
C o n v e rte r
Pin Assignment
VSS 1
TEST 2
PRB 3
O SCI 4
O SCO 5
D ATA 6
IE 0 7
IE 1 8
IE 2 9
IE 3 1 0
20 V D D
19 C T
18 O .0
17 O .1
16 O .2
15 O .3
14 O .4
13 O .5
12 O .6
11 O .7
H T 6 2 4 0 -0 0 2
2 0 S O P -A
VDD VSS
VSS 1
TEST 2
PRB 3
O SCI 4
O SCO 5
D ATA 6
IE 0 7
IE 1 8
IE 2 9
IE 3 1 0
N C 11
N C 12
24 V D D
23 C T
22 O .0
21 O .1
20 O .2
19 O .3
18 O .4
17 O .5
16 O .6
15 O .7
14 N C
13 N C
H T 6 2 4 0 -0 0 2
2 4 S O P -A
Rev. 1.30
1
November 6, 2002