一華半導體股½有限公司
MOSDESIGN SEMICONDUCTOR CORP.
EN/DECODER
3 STATES ENCODER
3
態編碼
IC
GENERAL DESCRIPTION
功½敘述
M318E
The M318E is a CMOS ASIC encoder. It will en-code 12 parallel data inputs (A0~A11) and serially TE transmit them to the
output when transmits enable (TE) depressed. The address inputs are 3 states i.e. LOW (0)、OPEN (X) or HIGH(1). It will transmit
1 cycle each depressed.
FEATURES
產品特長
•
Same Rosc matched to the DECODER M318D/F
•
3
18
=387,420,489 codes, “0”、”X”、”1” Tri-state
•
Internal code A0~A7 1 0 1 1 1 0 A8~A11
•
1 cycle transmission each time
•
Direct data transmit type : (Eliminating TE and diodes)
―
M318E-H : switch to VDD
APPLICATIONS
產品應用
•
Car/home alarm system, garage control etc..
BLOCK DIAGRAM
功½方塊圖
X
Oscillator
Y
Freq
Divider
Output
Driver
DO
TE
A0
Input
Control
Central
Control
Logic unit
IR
Carrier
A11
*All specs and applications shown above subject to change without prior notice.
(
以㆖電路及規格僅供參考,本公司得逕行修正
)
1/5
2001-09-10
一華半導體股½有限公司
MOSDESIGN SEMICONDUCTOR CORP.
EN/DECODER
3 STATES ENCODER
3
態編碼
IC
ABSOLUTE MAXIMUM RATING
Parameter
Supply Voltage
Input Voltage
Operating Temperature
Storage Temperature
Rating
-0.3 to 15
-0.2~V
DD
+0.2
-50 to 125
0 to 70
M318E
(TA=25℃)
Unit
V
V
℃
℃
ELECTRICAL CHARACTERISTICS
Characteristics
Operating Voltage
Operating Current
Quiescent Current
Output Drive Current
Input Voltage
Oscillator Frequency
Sym.
V
DD
I
OP
I
SB
I
O
V
IH
V
IL
Fosc
Min.
2.4
―
―
―
V
DD
–0.2
V
SS
―
Typ.
―
0.1
0.1
2
V
DD
V
SS
76
Max.
15
1
0.5
―
V
DD
V
SS
+0.2
―
Unit
V
μA
mA
mA
V
KHz
External±30%, Rosc=240KΩ
@V
DS
=1.2V
No load
Conditions
PIN DESCRIPTION
No.
1~8
9
10~13
14
15
16
17
18
Name
A0~A7
VSS
A8~A11
TE
Y
X
DO
VDD
Description
Address inputs
Negative power supply
Address inputs
Transmit enable
Oscillator output
Oscillator input
Data output
Positive power supply
A0
A1
A2
A3
A4
A5
A6
A7
VSS
M318E
1
18
VDD
DO
X
Y
TE
A11
A10
A9
9
10
A8
2/5
2001-09-10
一華半導體股½有限公司
MOSDESIGN SEMICONDUCTOR CORP.
EN/DECODER
3 STATES ENCODER
3
態編碼
IC
TIMING WAVEFORM
(1) Bit format
1
40
41
119 120
160
200 201
279 280
320
M318E
OSC
120 CLOCKS
120 CLOCKS
“0”
“OPEN”
“1”
40 CLOCKS
40 CLOCKS
40 CLOCKS
120 CLOCKS
120 CLOCKS
40 CLOCKS
40 CLOCKS
120 CLOCKS
120 CLOCKS
40 CLOCKS
(2) TIMING DIAGRAM
TE
D0~D3
(M41831E-H)
1st WORD
18 bits
SYNC
4 bits
SYNC
2nd WORD
4th WORD
DO
M318E F-V curve
250
75K
82K
200
91K
100K
150
Freq (KHz)
180K
100
200K
220K
50
270K
360K
0
2
7
VDD ( Volt )
12
17
120K
150K
3/5
2001-09-10
一華半導體股½有限公司
MOSDESIGN SEMICONDUCTOR CORP.
EN/DECODER
3 STATES ENCODER
3
態編碼
IC
OPERATING FLOWCHART
M318E
Power ON
Stand-by
N
TEB
depressed?
4 words data
transmitted
N
TEB still
depressed?
Y
4/5
2001-09-10
一華半導體股½有限公司
MOSDESIGN SEMICONDUCTOR CORP.
EN/DECODER
3 STATES ENCODER
3
態編碼
IC
APPLICATION DIAGRAM
參考電路圖
(1) DIP PACKAGE
直接發射
(VDD)
VDD
1
A0
A1
X
A2
Y
A3
A4
A5
A10/D1
A6
A9/D2
A7
VSS
9
10
A8/D3
A7
VSS
9
10
A6
TE
A11/D0
A5
Rosc
VDD
A3
A4
A2
Y
0
1
18
DO
A1
X
Rosc
M318E
M318E
VDD
IR / RF
VDD
1
A0
0
M318E-H
VDD
1
18
DO
IR / RF
VDD
D0
D1
D2
D3
(2) SOP PACKAGE
直接發射
(VDD)
VDD
1
A0
A1
X
A2
Y
A3
A4
A5
A10/D1
A6
A9/D2
A7
VSS
10
11
A8/D3
A7
VSS
10
11
A6
D2
D3
TE
A11/D0
A5
Rosc
VDD
A3
A4
VDD
D0
D1
A2
Y
0
1
20
A0
DO
A1
X
Rosc
M318E-S
VDD
IR / RF
VDD
1
0
M318E-HS
VDD
1
20
DO
IR / RF
5/5
2001-09-10
嵌入式系统
