SC6922 [ETC]
红外遥控IC; デコーダIC
| 型号： | SC6922 |
| 厂家： | 
ETC |
| 描述： | 红外遥控IC |
| 文件： | 总11页 (文件大小：214K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
S&C ꢀꢁҔꢂꢃꢄˤꢅ
SUPER CHIP TECHNICAL CORPORATION LTD.
SC6921&SC6922 (ꢀꢁꢂꢃꢄS&CIC0328)
REMOTE CONTROL TRANSMITTER
General Description:
SC6921 and SC6922 are high performance remote control transmitter COMS IC, it is specially designed for use on infrared
remote control applications. The custom codes (Max.) of SC6921 and SC6922 are available by setting external diodes and resistors.
The transmission code consists of “leader pulse “ ꢅ”16 bits custom code “and” 16 bits data code”.
Feature Description:
ꢀ
ꢀ
ꢀ
High performance CMOS technology
Low power consumption (VDD=2.0~5.5V)
SC6921: 32 function keys and 3double action keys
and 54+6 function codes ate available (Using D7 pin)
SC6922: 64 function keys and 3 double action keys
and 128+6 function codes ate available (Using D7 pin)
PPM(Pulse Position Modulation) code method
Ceramic resonator frequence 455 KHz
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
DOUT with a 38 KHz carrier for IR medium
Custom codes can be selected (Using external diodes and resistors)
SC6921-1 & SC6922-1: use the ROM1 & ROM2
SC6921-2 & SC6922-2: use the ROM2 & ROM3
Block Diagram:
Package configuration:
SC6922
SC6921
1
24
23
22
21
20
19
18
17
16
15
14
13
R3
R4
R2
R1
AIN
C1
C2
C3
C4
C5
C6
C7
C8
LED
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
R1
R2
AIN
C1
2
3
R5
R3
C2
4
R6
R4
C3
5
R7
DOUT
VSS
D7
C4
6
R8
C5
7
DOUT
VSS
D7
C6
8
X2
C7
9
X1
C8
10
11
12
X2
VDD
LED
X1
VDD
జ 1 ꢀ ˩ 11 ꢀ
S&C ꢀꢁҔꢂꢃꢄˤꢅ
SUPER CHIP TECHNICAL CORPORATION LTD.
SC6921&SC6922 (ꢀꢁꢂꢃꢄS&CIC0328)
REMOTE CONTROL TRANSMITTER
Pin Description:
SC6921
PIN No.
SC6922
PIN No.
1
Pin Name NO.
DESCRIPTION
3
4
-
-
-
-
5
6
7
R3
R4
1
1
1
1
1
1
O
P
I
Row control for keyboard matrix (active high)
Row control for keyboard matrix (active high)
Row control for keyboard matrix (active high)
Row control for keyboard matrix (active high)
Row control for keyboard matrix (active high)
Row control for keyboard matrix (active high)
Serial data output with 38 KHZ carrier
Negative power supply
2
3
4
5
6
7
8
9
R5
R6
R7
R8
DOUT
VSS
D7
Data code D7 setting
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
X2
X1
VDD
LED
C8
C7
C6
C5
C4
C3
C2
C1
AIN
R1
O
I
P
O
455 KHz resonator oscillator output
455 KHz resonator oscillator input
Positive power supply
10
11
12
13
14
15
16
17
18
19
20
1
Indicator LED output
I/O Column control for keyboard matrix
Column control for keyboard matrix
Column control for keyboard matrix
Column control for keyboard matrix
Column control for keyboard matrix
Column control for keyboard matrix
Column control for keyboard matrix
Column control for keyboard matrix
Low byte of custom codes (8 bits) scan input
Row control for keyboard matrix (active high)
Row control for keyboard matrix (active high)
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
I
I
2
R2
Functional Description
Keyboard scan
SC6921 and SC6922 Stay in the stand-by state, the oscillator is OFF and stand-by current <1uA. The SC6921 consists of 32
function keys and SC6922 consists of 64 function keys. The keyboard form of the SC6921&SC6922 are as shown.
ꢀ The SC6921 keyboard form:
C1
C2
C3
C4
C5
C6
C7
C8
R1
R2
R3
R4
K11 K12 K13 K14 K15 K16
K18
K28
K17
K21 K22 K23 K24 K25
K35
K26 K27
K36 K37 K38
K31 K32 K33 K34
K41 K42 K43 K44 K45 K46 K47 K48
జ 2 ꢀ ˩ 11 ꢀ
S&C ꢀꢁҔꢂꢃꢄˤꢅ
SUPER CHIP TECHNICAL CORPORATION LTD.
SC6921&SC6922 (ꢀꢁꢂꢃꢄS&CIC0328)
ꢀ The SC6922 keyboard form:
REMOTE CONTROL TRANSMITTER
C1
C2
C3
C4
C5
C6
C7
C8
R1
R2
R3
R4
R5
R6
R7
R8
K11 K12 K13 K14 K15 K16
K18
K28
K17
K21 K22 K23 K24 K25
K35
K26 K27
K31 K32 K33 K34
K41 K42 K43 K44 K45 K46 K47 K48
K52 K56 K57
K61 K62 K63 K64 K65 K66 K67 K68
K73
K81 K82 K83 K84 K85 K86 K87 K88
K36 K37 K38
K51
K53 K54 K55
K58
K71 K72
K74
K76 K77 K78
K75
Transmission codes
When one of the keys ( 32 keys of 64 keys ) is triggered over 36 ms, the oscillator is enable and the IC is activated. If the key
is pressed and held for 108 ms or less, the 108 ms transmission codes of the SC6921&SC6922 consist of a 9 ms header code, a
4.5ms off code, 16-bits custom codes ( 18ms-36ms ), 8-bits data codes ( 18ms-9ms ).
After the pressed key is held for 108ms, if the key is still held down, the transmission codes turn out to be a composition of
header code ( 9 ms )and off code ( 2.5ms )only.
The following is an illustration of the transmission codes:
Key
key Enables
input
36ms min
X2
Fosc 455 KHz
4.5ms
2.25ms
2.25ms
0.56ms
38 KHz 1/3 duty carrter
DOUT
9ms
8ms
8ms
45ms - 63ms
0.56ms
108ms
custom & data code
108ms
Output format for the DOUT
The output cattier ( 38 KHz ) of the DOUT pin:
38 KHz
Carrier
8.77us
26.3us
38 KHz carrier form
The transmission codes employ the PPM ( Pulse Position Modulation ) method to represent their two logic states by bit-0
( 1.12 ms ) and bit-1 ( 2.24 ms ):
bit-0
0.56ms
38 KHz carrier
data period ( 1.12 ms )
bit01
38 KHz carrier
data period ( 2.24 ms )
bit-0 and bit-1 Logic states form
జ 3 ꢀ ˩ 11 ꢀ
S&C ꢀꢁҔꢂꢃꢄˤꢅ
SUPER CHIP TECHNICAL CORPORATION LTD.
SC6921&SC6922 (ꢀꢁꢂꢃꢄS&CIC0328)
To set the custom codes (A0fA15)
REMOTE CONTROL TRANSMITTER
The algorithm rule of the custom codes (A0fA15)can be selected by mask option and the user can choose the SC6921-1 &
SC6922-1 or the SC6921-2 & SC6922-2.
ꢀ
The SC6921-1 & SC6922-1:
The value of ROM1 (8bits) & RIM2 (8 bits) are both “00H”, and it is decided by one mask layer. The A0ꢅꢅA7 are set by
logical OR between the switches (S0ꢅꢅS7) and ROM1.The A8ꢅꢅA15 equal some bits be inverted of A0ꢅꢅA7, the inversion
are decided by logical OR between the switches (S8ꢅꢅS15) and ROM2.
For example:
SC6921-1 & SC6922-1
AIN
C1
C2
C3
C4
C5
C6
C7
C8
200K
S8
200K
S9
200K
S10
200K
S11
200K
S13
200K
S12
200K
S14
200K
S15
S0
S1
S2
S3
S4
S6
S7
S5
IN4148
IN4148
IN4148
IN4148
IN4148 IN4148
IN4148
IN4148
1:Switch close
0:Switch open
ꢀ
The SC6921-2 & SC6922-2:
In this case, the 28 bits on chip MASK ROM (ROM2 &ROM3-0, ROM3-1, ROM3-2 and ROM3-3) is available and it is
decided by one mask layer. The value of ROM2 is “00H” and the value of ROM3 is show below “ROM3 option table”. The A0--
A2 are set by S0--S7(“A0--A2 option table”).The A3--A7 are set by S14&S15 ( “ ROM3 option table”). The A8--A15 equal some
bits be inverted of A0--A7 and the inversion are decided by logical OR between the switches S8--S13 and ROM2.
జ 4 ꢀ ˩ 11 ꢀ
S&C ꢀꢁҔꢂꢃꢄˤꢅ
SUPER CHIP TECHNICAL CORPORATION LTD.
SC6921&SC6922 (ꢀꢁꢂꢃꢄS&CIC0328)
REMOTE CONTROL TRANSMITTER
A0--A2 option table
A0 A1 A2
ROM3 option table
S14
0
S15
0
A3
0
A4
0
A5
0
A6
0
A7
0
ROM3
S0=1
S1=1
S2=1
S3=1
S4=1
S5=1
S6=1
0
1
0
1
0
1
0
1
0
0
1
1
0
0
1
1
0
0
0
0
1
1
1
1
ROM3-0
ROM3-1
ROM3-2
ROM3-3
ꢀ
ꢀ
ꢀ
ꢀ
0
1
1
1
0
0
1
1
0
0
0
0
0
1
1
1
1
0
1
1
1
S0--S7 are closed must only one.
Note: priority S7>--->S0 (AO--A2 option table)
S7=1
For example:
SC6921-2 & SC6922-2
AIN
C1
C2
C3
C4
C5
C6
C7
C8
200K
S8
200K
S9
200K
S10
200K
S11
200K
S13
200K
S12
200K
S14
200K
S15
S0
S1
S2
S3
S4
S6
S7
S5
IN4148
IN4148
IN4148
IN4148
IN4148 IN4148
IN4148
IN4148
1:Switch close
0:Switch open
The vaules of the data codes ( D0-D7 )
The SC6921 contains 32 function keys and the SC6922 contains 64 function keys. Each key corresponds to one data code, The
SC6921& SC6922 provide 3 double keys.
ꢀ
The SC6921 data codes:
జ 5 ꢀ ˩ 11 ꢀ
S&C ꢀꢁҔꢂꢃꢄˤꢅ
SUPER CHIP TECHNICAL CORPORATION LTD.
SC6921&SC6922 (ꢀꢁꢂꢃꢄS&CIC0328)
REMOTE CONTROL TRANSMITTER
KEY
NAME
K11
DATA CODES
KEY
NAME
K15
DATA CODES
D0--------------------------D6 D7
D0--------------------------D6 D7
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
K21
K31
K41
K12
K22
K32
K42
K13
K23
K33
K43
K14
K24
K34
K44
K25
K35
K45
K16
K26
K36
K46
K17
K27
K37
K47
K18
K28
K38
K48
K16+K26
K16+K36
K16+K46
ꢀ
The SC6922 data codes:
KEY
NAME
K11
K21
K31
K41
K12
K22
K32
K42
K13
K23
K33
K43
K14
K24
K34
K44
K51
K61
K71
K81
K52
K62
K72
K82
K53
K63
K73
K83
K54
K64
K74
DATA CODES
D0--------------------------D6 D7
0/1
KEY
DATA CODES
D0--------------------------D6 D7
NAME
K15
K25
K35
K45
K16
K26
K36
K46
K17
K27
K37
K47
K18
K28
K38
K48
K55
K65
K75
K85
K56
K66
K76
K86
K57
K76
K77
K87
K58
K68
K78
K88
K16+K46
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
K84
K16+K26
K16+K36
జ 6 ꢀ ˩ 11 ꢀ
S&C ꢀꢁҔꢂꢃꢄˤꢅ
SUPER CHIP TECHNICAL CORPORATION LTD.
SC6921&SC6922 (ꢀꢁꢂꢃꢄS&CIC0328)
REMOTE CONTROL TRANSMITTER
The 8-Bit data codes of will define the inverse codes of the other 8-bit data codes ( D8-D15 )
D7 is defined by an external switch code D7=0 -> connect to VDD
code D7=1 -> connect to VSS
Function keys control
If two or more keys are depressed simultaneously ( excapt K16+ K26 &K16+K36&K16+K46 ), the transmission is disabled by
the multi- depression prevention circuit, As regards the key transmission priority in the case of two depressions, with simultaneous
depressions ( B36 ms ) transmission is disabled and first depressions, later remainder priority is used.
When a key is pressed, teading of the custom code and key data code is started, and DOUT output begins 36 ms later, so that if
the key is begin depressed during this 36 ms interval one transmission is performed. If a key is held down for 108ms or longer ,
consecutive transmissions of the leader code only are performed while the key is depressed. As a key interruption operation can
handle an interval of up to 126ms ( from ON to ON ). It is possible to configure a system with an extremely fast response time.
ꢀ
Two or more keys are depressed ( except K16+K26 &K16+K36&K16+K46 )
K16 input
K16 Enables
Kmn input
Kmn Enables
36ms
36ms < t<126ms
DOUT
k16 code transmission
36ms
108ms ( min )
( A )
K16 input
Kmn input
K16 Enables
Kmn Enables
36ms
DOUT
The transmission is disabled
( B )
K16 input
Kmn input
KmnEnables
K16 Enables
36ms
36ms < t<126ms
DOUT
k16 code transmission
36ms
108ms ( min )
( C )
జ 7 ꢀ ˩ 11 ꢀ
S&C ꢀꢁҔꢂꢃꢄˤꢅ
SUPER CHIP TECHNICAL CORPORATION LTD.
SC6921&SC6922 (ꢀꢁꢂꢃꢄS&CIC0328)
REMOTE CONTROL TRANSMITTER
K16 input
Kmn input
Kmn Enables
K16 Enables
36ms
DOUT
The transmission is disabled
( D)
Kmn Enables
Kmn input
DOUT
t<108 ms
Kmn code transmission
36ms
t<108 ms ( min )
( E )
K16 input
Kmn Enables
t<108 ms
Kmn code transmission
36ms
t<108 ms ( min )
t<108 ms ( min )
( F )
To avoid the mistakes made by keyboard scanning or simultaneous two-key input, excep 3 double key active function
( K16+K26, K16+K36, K16+K46 ), the SC6921&SC6922 are facilitated with 36ms starting time.
ꢀ
The 3 double keys are depressed (K16+K26& K16+K36& K16+K46 ):
Kd6: One of (K26 or K36 or K46 )
K16 input
K16 Enables
K16 input
Kd6 Enables
36ms
t > 126ms
DOUT
K16 code transmission
K16+ Kd6 code transmission
36ms
108ms
108ms
జ 8 ꢀ ˩ 11 ꢀ
S&C ꢀꢁҔꢂꢃꢄˤꢅ
SUPER CHIP TECHNICAL CORPORATION LTD.
SC6921&SC6922 (ꢀꢁꢂꢃꢄS&CIC0328)
REMOTE CONTROL TRANSMITTER
PAD
C2
C3
C4
C5
C6
C7
C8
C1
AIN
R1
LED
VDD
X1
R2
R3
R4
R5
R6
ꢀꢁꢂֽ
'$$ X2
D7
DOUT
R7
R8
VSS
Absolute maximum ratings:
ITEM DECRIPTION
Supply voltage
SYMBOL
VDD
RAEINGS
2.0~3.3
UNIT
V
Operating temperature
Topr
-20~70
k
Storage temperature
Tstg
-50~125
k
Electronic characteristics:
ITEM
SYMBOL CONDITION
VDD
MIN.
2.0
-
-
-
TYPE
3.0
-
60
3.5
5
-2.0
25
MAX.
UNIT
V
Supply voltage
5.5
5.0
100
-
-
-
Stand-by currant (Oscillator OFF)
Operating current (Oscillator ON)
Sinking current (DOUT)
Sink current (LED)
Driving current (C1/C8)
Sinking current (C1/C8)
Input HIGH voltage(R1-R8)
Input LOW voltage (R1-R8)
Input HIGH voltage(C1-C8)
Input LOW voltage (C1-C8)
Input HIGH voltage (AIN)
Input LOW voltage (AIN)
Pull LOW resistor (AIN)
ISB
IOP
VDD=3.0V
uA
uA
mA
mA
mA
uA
V
V
V
V
V
VDD=3.0V No lead
VDD=3.0V VO=1.2V
VDD=3.0V VO=1.2V
VDD=3.0V VO=2.7V
VDD=3.0V VO=0.3V
VDD=3.0V
IOL1
IOL2
IOH3
IOL3
VIH1
VIL1
VIH2
VIL2
VIH3
VIL3
RPL1
-
-1.0
20
1.9
0
1.0
0
-
-
-
-
-
-
-
3.0
0.8
3.0
0.5
3.0
0.5
-
VDD=3.0V
VDD=3.0V
VDD=3.0V
VDD=3.0V
1.25
0
VDD=3.0V
V
-
-
240K
ꢆ
Pull HIGH resistor (AIN)
Pull LOW resistor (R1-R8)
Pull LOW resistor (C1-C8)
System frequence (X2)
RPH
RPL2
RPL3
Fosc
-
-
-
-
-
290K
300K
900K
455
-
-
-
-
ꢆ
ꢆ
-
-
ꢆ
Resonator 455 KHz
KHz
జ 9 ꢀ ˩ 11 ꢀ
S&C ꢀꢁҔꢂꢃꢄˤꢅ
SUPER CHIP TECHNICAL CORPORATION LTD.
SC6921&SC6922 (ꢀꢁꢂꢃꢄS&CIC0328)
REMOTE CONTROL TRANSMITTER
APPLICATION CIRCUIT
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
R1 AIN
R2
C1
C2
C3
C4
C5
C6
C7
C8
R3
C8 C7 C6 C5 C4 C3 C2 C1
R4
DOUT
R1
R2
R3
R4
VSS
D7
455E
X2
X1
LED
VDD LED
100P
104
3V
ꢀꢁ౧
200K X 8
IN4148 X 8
0R~10R
103
జ 10 ꢀ ˩ 11 ꢀ
S&C ꢀꢁҔꢂꢃꢄˤꢅ
SUPER CHIP TECHNICAL CORPORATION LTD.
SC6921&SC6922 (ꢀꢁꢂꢃꢄS&CIC0328)
REMOTE CONTROL TRANSMITTER
1
24
23
22
21
20
19
18
17
16
15
14
13
R3
R4
R2
R1
C8 C7 C6 C5 C4 C3 C2 C1
2
R1
R2
R3
R4
3
R5 AIN
4
R6
C1
C2
C3
C4
5
R7
6
R8
7
DOUT
R5
R6
R7
R8
8
VSS C5
9
D7
C6
X2 C7
X1 C8
VDD LED
455E
10
11
12
LED
100P
104
3V
ꢀꢁ౧
200K X 8
IN4148 X 8
0R~10R
103
జ 11 ꢀ ˩ 11 ꢀ
相关型号：
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