ETC M1EA

一華半導體股份有限公司
EN/DECODER
MOSDESIGN SEMICONDUCTOR CORP.
2 STATES ENCODER
2 態編碼 IC
M1EA
GENERAL DESCRIPTION 功能敘述
The M1EA is a CMOS ASIC encoder. It will en-code 12 parallel data inputs and serially transmit them to the output when
transmit enable (TE) depressed. These address inputs are 2 states i.e. LOW (0) or OPEN (1).
FEATURES 產品特長
• Same Rosc matched to the Decoder M1DA/FA .
• 212 = 4,096 codes.
• 4 cycles transmission each time.
• Direct data transmit type:(Eliminating TE and diodes).
─M1EA-H:switch to VDD.
APPLICATIONS 產品應用
• Car/home alarm system, garage control etc..
BLOCK DIAGRAM 功能方塊圖
X
Freq
Divider
Oscillator
Y
Output
Driver
DO
TE
A0
Input
Control
Control
Logic unit
A11
*All specs and applications shown above subject to change without prior notice.
( 以上電路及規格僅供參考,本公司得逕行修正 )
1/6
2005-03-10
一華半導體股份有限公司
EN/DECODER
MOSDESIGN SEMICONDUCTOR CORP.
2 STATES ENCODER
2 態編碼 IC
M1EA
ABSOLUTE MAXIMUM RATING
(TA=25℃)
Parameter
Supply Voltage
Input Voltage
Rating
-0.3 to 12
Unit
V
-0.2~VDD +0.2
V
0 to 70
℃
-50 to 125
℃
Operating Temperature
Storage Temperature
ELECTRICAL CHARACTERISTICS
Characteristics
Operating Voltage
Sym.
VDD
Min.
2.4
Typ.
─
Max.
12
Unit
V
Operating Current
IOP
─
0.1
1
mA
Quiescent Current
ISB
─
0.1
μA
Output Drive Current
IO
─
2
0.5
─
VIH
VDD –0.2
VDD
VDD
VIL
VSS
─
VSS
VSS +0.2
─
Input Voltage
Oscillator Frequency
Fosc
76
mA
Conditions
No load
@VDS=1.2V
V
KHz
External±30%
PIN DESCRIPTION
No.
1~8
9
10~13
14
M1EA
Name
A0~A7
Description
Address inputs
VSS
A8~A11
Negative power supply
Address inputs
Transmit enable
15
16
17
TE
Y
X
DO
18
VDD
Oscillator output
Oscillator input
Data output
Positive power supply
A0
18
VDD
A1
DO
A2
X
A3
Y
A4
TE
A5
A11
A6
A10
A7
A9
VSS
2/6
1
9
2005-03-10
10
A8
一華半導體股份有限公司
EN/DECODER
MOSDESIGN SEMICONDUCTOR CORP.
2 STATES ENCODER
2 態編碼 IC
M1EA
TIMING WAVEFORM
(1) B IT FORMAT
1
2
32 33
64 65
96
OSC
32 CLOCKS
"0"
64 CLOCKS
64 CLOCKS
"OPEN"
32 CLOCKS
(2) TIMING DIAGRAM
TE
A0
DO
12 BITS
A11
A0
1st WORD
A11
4th WORD
SYNC
SYNC
M1EA F-V curve
250
75K
82K
200
91K
100K
120K
150
150K
Freq (KHz)
180K
100
200K
220K
50
270K
360K
0
2
7
12
17
VDD ( Volt )
3/6
2005-03-10
一華半導體股份有限公司
EN/DECODER
MOSDESIGN SEMICONDUCTOR CORP.
2 STATES ENCODER
2 態編碼 IC
M1EA
OPERATING FLOWCHART
Power ON
Stand-by
N
TEB
depressed?
4 words data
transmitted
N
TEB still
depressed?
Y
4/6
2005-03-10
一華半導體股份有限公司
EN/DECODER
MOSDESIGN SEMICONDUCTOR CORP.
2 STATES ENCODER
2 態編碼 IC
M1EA
RECONNENDED OSCILLATOR PARAMETERS
Rosc (KΩ)
75
M1EA/DA/FA (KHz)
261
82
241
91
100
220
203
120
168
150
180
133
113
200
101
220
270
94
75
300
67
330
360
63
56
DATA OUTPUT
M1EA
(D0~D3)
0 (VSS)
1 (OPEN)
M1DA/FA
(D0~D3)
1 (VDD)
0 (VSS)
Freq-Rosc Chart
( @Vdd=12V )
300
Freq ( KHz )
250
200
150
M1EA/DA/FA
100
50
0
0
50
100
150
200
250
300
350
400
Rosc ( KO )
5/6
2005-03-10
一華半導體股份有限公司
EN/DECODER
MOSDESIGN SEMICONDUCTOR CORP.
2 STATES ENCODER
2 態編碼 IC
M1EA
APPLICATION DIAGRAM 參考電路圖
M1EA
M1EA
VDD
A0
1
18
VDD
IR / RF
Y
IR / RF
16
A2
X
A2
1
DO
DO
A1
A0
X
A3
Rosc
Y
A3
Rosc
A4
A4
TE
A5
TE
A5
D3
A6
D3
A6
D2
A7
D2
A7
D1
VSS
VSS
9
8
9
D0
10
M1EA-S
1
20
VDD
A0
IR / RF
DO
A1
X
A2
Y
Rosc
A3
A4
TE
A5
A11/D3
A6
A10/D2
A7
A9/D1
VSS
10
11
A8/D0
6/6
2005-03-10
D1