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PDF STV3012 Data sheet ( Hoja de datos )
| Número de pieza | STV3012 | |
| Descripción | REMOTE CONTROL TRANSMITTER FOR AUDIO AND VIDEO APPLICATIONS | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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( DataSheet : www.DataSheet4U.com )
STV3012
REMOTE CONTROL TRANSMITTER
FOR AUDIO AND VIDEO APPLICATIONS
. TWO TIMING AND DATA FORMAT MODES
. 7 SUB-SYSTEM ADDRESSES
. UP TO 64 COMMANDS PER SUB-SYSTEM
ADDRESS
. KEY RELEASE DETECTION BY TOGGLE BIT
(1 toggle bit in mode A and 2 toggle bits in
mode B)
. HIGH CURRENT REMOTE OUTPUT
AT VDD = 3V (-IOH = 80mA)
. VERY LOW STAND-BY CURRENT (< 2µA)
. 1mA OPERATIONAL CURRENT AT 6V SUP-
PLY
. CERAMIC RESONATOR CONTROLLED
FREQUENCY (typ. 450kHz)
. MODULATED TRANSMISSION
. SUPPLY VOLTAGE RANGE 2V TO 6.5V
. LOW NUMBER OF EXTERNAL COMPO-
NENTS
PRELIMINARY DATA
DIP20
(Plastic Package)
ORDER CODE : STV3012
PIN CONNECTIONS
DESCRIPTION
The STV3012 is a general purpose infrared remote
control transmitter system for low voltage supply
applications. It is able to generate a total number
of 448 commands which are divided into 7 sub-sys-
tem groups with 64 commands each. The sub-sys-
tem code may be selected by a press button, a
slider switch or hard wired. Two different timing and
data format modes are available.
REMO
SEN6N
SEN5N
SEN4N
SEN3N
SEN2N
SEN1N
SEN0N
ADRM
VSS
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
March 1993
This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
VDD
DRV6N
DRV5N
DRV4N
DRV3N
DRV2N
DRV1N
DRV0N
OSCO
OSCI
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STV3012
Figure 1 : Data Format of REMO ; T0 and T1 = toggle bits ; S0, S1, S2 and S3 = sub-system address ;
A, B, C, D, E, F and G = command bits
MODE A
H
REMO
L
bit
data
tw
S3 S2 S1 S0 T0 G F E D C B A
0 1 0 1 0 1 00 1 00 1
S3
MODE B
tw
H
REMO
L
bit
data
T0 T1 S2 S1 S0 F
0 1010 1
ED
00
C
1
Bit Separation (tB)
Logic "0"
Logic "1"
Toggle bit time
Mode A
1 x t0
2 x t0
1 x t0 or 2 x t0
BA
00
Mode B
2 x t0
3 x t0
2 x t0 or 3 x t0
T0
Figure 2 : Pulse Train Timing (ref. to fOSC = 400kHz)
t B (bit duration)
t PW
tM
t MH
t ML
1st bit
2nd bit
t W (word distance)
last bit
Mode
A
B
t0 (ms)
2.52
2.88
tM (µs)
30
30
Mode A and B
tOSC
tM
tML
tMH
2.5µs
12 x tOSC
8 x tOSC
4 x tOSC
Mode A
tPW (15 x tM) + tMH
t0 1008 x tOSC
tW 34416 x tOSC
Mode B
tPW (11 x tM) + tMH
t0 1152 x tOSC
tW 55296 x tOSC
tMH (µs)
10
10
tML (µs)
20
20
oscillation period
modulation period
modulation period LOW
modulation period HIGH
modulated pulse
basic unit of pulse distance
word distance
modulated pulse
basic unit of pulse distance
word distance
tW (ms)
86.04
138
5/8
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| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet STV3012.PDF ] | |
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