Holtek HT12E2T4 Operating voltage: 2v ~ 3.6v output power up to 10dbm Datasheet

216/212 RF Encoder
HT16C2T3/HT16E2T3/HT16G2T3
HT16C2T4/HT16E2T4/HT16G2T4
HT12C2T3/HT12E2T3
HT12C2T4/HT12E2T4
Revision: V.1.00
Date: January
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28, 2011
HT16x2Tx/HT12x2Tx
216/212 RF Encoder
Table of Contents
Features.......................................................................................................................... 1
Applications.................................................................................................................... 1
General Description....................................................................................................... 1
Naming for Selection Guide.......................................................................................... 2
Block Diagram................................................................................................................ 2
Pin Assignment.............................................................................................................. 3
Pin Description............................................................................................................... 3
Absolute Maximum Ratings.......................................................................................... 4
Functional Description.................................................................................................. 5
Address/Data Waveform................................................................................................ 5
Bit Time (Td)..........................................................................................................................5
Code Word............................................................................................................................6
Operation Flowchart...................................................................................................... 7
Application Circuit......................................................................................................... 7
Package Information...................................................................................................... 8
20-pin SSOP (150mil) Outline Dimensions...........................................................................8
Reel Dimensions...................................................................................................................9
Carrier Tape Dimensions.....................................................................................................10
Rev. 1.00
i
January 28, 2011
HT16x2Tx/HT12x2Tx
216/212 RF Encoder
Features
●● Operating voltage: 2V ~ 3.6V
●● Low standby current: 1µA (typ.) at VDD=3V
●● Data trigger function
●● Provides 2 compound Data trigger pins
●● Minimum four transmission words
●● Integrated oscillator – no external resistor
●● Positive polarity data codes
●● Integrated complete UHF transmitter
●● Frequency range 300MHz to 450MHz
●● Support ASK/OOK modulation
●● Output power up to 10dBm
●● Minimal external components
●● 20-pin SSOP
Applications
●● Burglar alarm systems
●● Smoke and fire alarm systems
●● Personal alarm system
●● Car/Garage door controllers
●● Home/office/car security systems
●● Cordless telephones
●● Other remote control systems
General Description
The HT16x2Tx/HT12x2Tx are a series of encoders which include a 300M~450MHz ASK
transmitter for remote control system applications. These highly integrated devices are true “switchin, antenna-out” monolithic devices. They are capable of encoding information consisting of N
address bits and 16- N data bits. Each address/data input can be set to one of two logic states.
The programmed addresses/data is transmitted together with the header bits via RF upon receipt
of a trigger signal. The capability to select a DATA trigger on the HT16x2Tx/HT12x2Tx further
enhances the application flexibility of the 216 series of encoders.
The devices offer high performance in the areas of power delivery and operating temperature.
In terms of power, the devices are capable of delivering +10 dBm into a 50Ω load. This power
level enables a small form factor transmitter such as a key fob transmitter to operate near the
maximum limit of transmission regulations. In terms of temperature, the devices can operate from
-40°C to 85°C with minor frequency drift. When compared with SAW solutions, wider operation
temperatures are obtainable. The also offer exceptional ease of use. It is only necessary to provide a
crystal reference frequency source, which has a frequency equal to the RF carrier frequency divided
by 32, together with a few additional external components to implement a complete and versatile
transmitter. The devices operate using ASK/OOK - Amplitude Shift Keying/On-Off Keyed - UHF
receiver types from wide-band super-regenerative radios to narrow-band, high performance superheterodyne receivers.
Rev. 1.00
1
January 28, 2011
HT16x2Tx/HT12x2Tx
216/212 RF Encoder
Naming for Selection Guide
HTxx_x_x_Tx
Carrier Frequency
3: 300MHz~365MHz
4: 365MHz~450MHz
Bit Time (Td)
2: 1ms
Address (Dip switch) No.
C: 6
E: 8
G: 10 (not available for HT12xTx)
Total Address + Data (Trigger) No.
12: 12 / 20SSOP package
16: 14 / 20SSOP package
Block Diagram
DOUT
OSC2
CREF
Oscillator
Data Select
& Buffer
÷3 Divider
A9/D9
OSC1
÷18 Counter &
1 of 18 Decoder
Binary Detector
PAOUT
Sync.
Circuit
EN
315M/433MHz
ASK Tx
A15/D15
18 Transmission
Gate Circuit
A0/D0
Rev. 1.00
A8/D8
VDD
2
VSS
January 28, 2011
HT16x2Tx/HT12x2Tx
216/212 RF Encoder
Pin Assignment
D2
D2
D1
D1
D0
D0
A3
A3
A2
A2
A1
A1
A0
A0
VDD
VDD
VSS
VSS
PAOUT
PAOUT
D2
D2
D1
D1
D0
D0
A3
A3
A2
A2
A1
A1
A0
A0
VDD
VDD
VSS
VSS
PAOUT
PAOUT
4-Address
10-Data
4-Address
10-Data
20
1
1
1920
2
1819
32
3
1718
4
1617
54
5
1516
6
1415
76
1314
87
1213
98
1112
109
11
10
HT16A2Tx
HT16A2Tx
20SSOP
20SSOP
4-Address
8-Data
4-Address
8-Data
20
1
1
1920
2
1819
32
3
1718
4
1617
54
1516
65
1415
76
1314
87
8
1213
9
1112
109
11
10
HT12A2Tx
HT12A2Tx
D3
D3
D4
D0
D0
A5
D6
D7
D7
B0
A3
A2
A2
A1
D4
D5
D5
D6
B0
B1
B1
XOUT
XOUT
XIN
XIN
DOUT
DOUT
D3
D3
D4
D0
D0
A5
D6
D7
D7
D8
A3
A2
A2
A1
D4
D5
D5
D6
D8
D9
D9
XOUT
XOUT
XIN
XIN
DOUT
DOUT
A5
A4
A4
A3
A5
A4
A4
A3
A1
A0
A0
VDD
VDD
VSS
VSS
PAOUT
PAOUT
A1
A0
A0
VDD
VDD
VSS
VSS
PAOUT
PAOUT
6-Address
8-Data
6-Address
8-Data
20
1
1
1920
2
1819
32
3
1718
4
1617
54
5
1516
6
1415
76
1314
87
1213
98
1112
109
11
10
HT16C2Tx
HT16C2Tx
20SSOP
20SSOP
6-Address
6-Data
6-Address
6-Data
20
1
1
1920
2
1819
32
3
1718
4
1617
54
1516
65
1415
76
1314
87
8
1213
9
1112
109
11
10
HT12C2Tx
HT12C2Tx
D1
D1
D2
A6
A6
A5
D4
D5
D5
B0
A3
A2
A2
A1
D2
D3
D3
D4
D4
D5
D5
D6
A3
A2
A2
A1
D6
D7
D7
XOUT
XOUT
XIN
XIN
DOUT
DOUT
A1
A0
A0
VDD
VDD
VSS
XOUT
XIN
XIN
DOUT
A6
A6
A5
D2
D3
D3
D4
A5
A4
A4
A3
B0
B1
B1
XOUT
D1
D1
D2
VSS
PAOUT
PAOUT
DOUT
A5
A4
A4
A3
A1
A0
A0
VDD
VDD
VSS
VSS
PAOUT
PAOUT
8-Address
4-Data
8-Address
4-Data
20
1
1
1920
2
1819
32
3
1718
4
1617
54
1516
65
1415
76
1314
87
8
1213
9
1112
109
11
10
HT12E2Tx
HT12E2Tx
8-Address
6-Data
8-Address
6-Data
20
1
1
1920
2
1819
32
3
1718
4
1617
54
5
1516
6
1415
76
1314
87
1213
98
1112
109
11
10
HT16E2Tx
HT16E2Tx
20SSOP
20SSOP
A7
A7
D0
A6
A6
A5
D2
D3
D3
D4
A3
A2
A2
A1
D0
D1
D1
D2
D4
D5
D5
XOUT
XOUT
XIN
XIN
DOUT
A5
A4
A4
A3
A1
A0
A0
VDD
VDD
VSS
VSS
PAOUT
DOUT
PAOUT
A7
A7
D0
D0
D1
D1
D2
D2
D3
D3
B0
B0
B1
B1
XOUT
XOUT
XIN
XIN
DOUT
DOUT
10-Address
4-Data
10-Address
4-Data
20
1
1
1920
2
1819
32
3
1718
4
1617
54
5
1516
6
1415
76
1314
87
1213
98
1112
109
11
10
HT16G2Tx
HT16G2Tx
20SSOP
20SSOP
A7
A7
A8
A8
A9
A9
D0
D0
D1
D1
D2
D2
D3
D3
XOUT
XOUT
XIN
XIN
DOUT
DOUT
Pin Description
Pin Name
Type
VDD
—
Positive power supply.
VSS
—
Negative power supply.
AX
I
DIP switch input
Internal pull high provided
DX
I
Push button input and transmission enable - active Low
Can be externally set to VDD or left open
B0
I
Compound pin of pin16 and pin19 for HT12x2Tx only
Ex. In HT12C2Tx, if B0 is pulled low, that means D5 and D2 are pulled low together.
B1
I
Compound pin of pin 16 and pin 17 for HT12x2T only
DOUT
O
Encoder data output
PAOUT
O
RF transmit Signal
XIN
I
XOUT
O
Crystal pin – frequency is RF carrier frequency divided by 32
e.g: for 315MHz RF carrier a 9.84375MHz crystal should be selected
Rev. 1.00
Description
3
January 28, 2011
HT16x2Tx/HT12x2Tx
216/212 RF Encoder
Absolute Maximum Ratings
Logic Supply Voltage ........................................................................................................ 2V to 3.6V
Logic Input Voltage ......................................................................................... VSS-0.3V to VDD+0.3V
Storage Temperature ................................................................................................... -55°C to 150°C
Operating Temperature ................................................................................................. -40°C to 85°C
Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute Maximum
Ratings” may cause substantial damage to the device. Functional operation of this device at other
conditions beyond those listed in the specification is not implied and prolonged exposure to extreme
conditions may affect device reliability.
Specifications apply for VDD = 3.0V, Ta = 25°C, Freq X’talOSC = 13.560MHz, EN = VDD. Bold values indicate
–20°C to70°C unless otherwise noted. 1kbps data rate 50% duty cycle. RL 50ohm load (matched)
Symbol
Parameter
Test Conditions
VDD
Conditions
Min.
Typ.
Max.
Units
VIH
“H” Input Voltage
—
—
0.8VDD
—
—
V
VIL
“L” Input Voltage
—
—
—
—
0.2VDD
V
RPH
Pull-high Resistance
3
—
150
—
KΩ
Td
One bit data width for
HT12x2Tx/HT16x2Tx
3
0.9
1.0
1.1
ms
I1
Data High Current
3V
@ 315MHz, POUT = +10dBm
@ 433.92MHz
—
13.5
—
mA
I0
Data Low current
3V
@ 315MHz
@ 433.92 MHz
—
3.0
—
DIN disabled current
3V
—
1
—
µA
ISTBY
Dx
—
—
mA
RF and Crystal
—
Output power level
3V
@315MHz, VDD=3.3V
@433.92MHz, VDD=3.3V
—
10
—
dBm
—
Harmonic output for
315 MHz
3V
@630MHz, 2nd harm.
@945MHz, 3rd harm.
—
-43
-52
—
dBc
—
Harmonic output for
433.92 MHz
3V
@867.84MHz, 2nd harm.
@1301.76MHz, 3rd harm.
—
-40
-47
—
dBc
—
Extinction ratio for ASK
10Kbps
3V
—
70
—
dBc
—
Occupied Bandwidth
3V
@315MHz
@433.92MHz
—
<700
<1000
—
kHz
—
315 MHz Single Side
Band Phase Noise
3V
@ 100kHz from Carrier
@ 1000kHz from Carrier
—
-73
-77
—
dBc/Hz
—
433.92 MHz Single
Side Band Phase Noise
3V
@ 100kHz from Carrier
@ 1000kHz from Carrier
—
-72
-76
—
dBc/Hz
—
XTLIN, XTLOUT
3V
Pin capacitance
—
2
—
pF
—
15
18
—
pF
—
—
External Capacitance
3V
See application circuit C3, C4
@315MHz
@433.92MHz
—
Output Blanking
3V
STDBY transition from LOW to
HIGH (=Pilot period)
—
12
—
bits
—
ASK to RF Out
Response Time
3V
Delta between ASK Input Transition
from Low to High to RF Output
Transition from Low to High
—
1
—
μs
Rev. 1.00
4
January 28, 2011
HT16x2Tx/HT12x2Tx
216/212 RF Encoder
Functional Description
The devices will execute a 4-word transmission cycle upon receipt of a transmission enable signal,
which is a low signal on DX. The transmission cycle will repeat itself as long as the transmission
enable, DX is held low. Once the transmission enable returns to a high level, the encoder output
completes its final cycle and then stops as shown below.
A/Dx
< 1 word
Encoder
DOUT
Transmitted
Continuously
4 words
4 words
An information word consists of 4 periods as illustrated below:
1/3 bit sync. period
address code period
pilot period (12 bits)
data code
period
Composition of Information
Address/Data Waveform
Each programmable address/data pin can be externally set to one of the following two logic states as
shown below:
fOSC
"One"
"Zero"
Td
Address/
Data Bit
Bit Time (Td)
Since the bit time is derived from the crystal frequency, HT16xTx/HT12xTx provides a voltage
and temperature invariance bit time. The formulation of the bit time related with crystal selection is
shown below:
HT16x2T3/HT12x2T3: Td=24/(fcx2500)
HT16x2T4/HT12x2T4: Td=168/(fcx12500)
Note: fc=crystal/106
Rev. 1.00
5
January 28, 2011
HT16x2Tx/HT12x2Tx
216/212 RF Encoder
For example:
RF carrier range: 315MHz
Td
(Crystal = 9.84375MHz)
HT16x2T3/HT12x2T3
0.975ms
RF carrier range: 433MHz
Td
(Crystal = 13.56MHz)
HT16x2T4/HT12x2T4
0.99ms
Code Word
A group of code bits is called a code word. A code word consists of one Pilot-code (Synchronous
bit) followed by address/ data bits. Refer to the diagram below:
HT16C2Tx:
Pilot-code
A0~A5
D0~D7
11
Pilot-code
A0~A7
D0~D5
11
Pilot-code
A0~A9
D0~D3
11
HT16E2Tx:
HT16G2Tx:
HT12C2Tx:
Pilot-code
A0~A5
D0~D5
Pilot-code
A0~A7
D0~D3
HT12E2Tx:
Rev. 1.00
6
January 28, 2011
HT16x2Tx/HT12x2Tx
216/212 RF Encoder
Operation Flowchart
Power on
Standby mode
No
Transmission
enabled?
YES
4 data words
transmitted
1
No
2
Transmission
still enabled
3
4
YES
4 data words
transmitted
continuously
Application Circuit
2
U2 LDO
HT7136-1
HT12E2TX_UHF TX
3
U1
C8
0.1uF
1
1
SW-DIP
2
SW-DIP
3
SW-DIP
4
SW-DIP
5
SW-DIP
6
SW-DIP
7
SW-DIP
8
VDD
S6
S5
BT1(12V)
S4
BT2(3V)
S3
BATTERY
BATTERY
S2
S1
S0
R3
9
L1
10
150nH
C7
100pF
Trace ANT
A6
A7
A5
D0
A4
D1
A3
D2
A2
D3
A1
B0
A0
B1
VDD
XOUT
VSS
PAOUT
XIN
DOUT
20
S7
SW-TACT
S8
SW-TACT
S9
SW-TACT
S10
SW-TACT
S11
SW-TACT
S12
SW-TACT
S13
18
17
16
B1
14
13
X1
12
11
2
R1
1
C1
C2
HT12E2T3
D1
LED
C5
C3
SW-DIP
19
C4
C6
Note: 1. When using a 6~12V battery, an HT7136 LDO should be added
2. 315MHz RF uses a 9.84375MHz Crystal
433MHz RF uses a 13.56MHz Crystal
Title
Size
433MTX(SZ01SZ1M11)
Number
Revision
A4
Date:
File:
1
2
Rev. 1.00
4-Nov-2010
Sheet of
D:\layout\HT9831_lay\HT1XET3\HT1XET3.Ddb
Drawn By:
3
7
4
January 28, 2011
HT16x2Tx/HT12x2Tx
216/212 RF Encoder
Package Information
20-pin SSOP (150mil) Outline Dimensions
Symbol
Dimensions in inch
Min.
Nom.
Max.
A
0.228
―
0.244
B
0.150
―
0.158
C
0.008
―
0.012
C’
0.335
―
0.347
D
0.049
―
0.065
E
―
0.025
―
F
0.004
―
0.010
G
0.015
―
0.050
H
0.007
―
0.010
α
0°
―
8°
Symbol
Rev. 1.00
Dimensions in mm
Min.
Nom.
Max.
A
5.79
―
6.20
B
3.81
―
4.01
C
0.20
―
0.30
C’
8.51
―
8.81
D
1.24
―
1.65
E
―
0.64
―
F
0.10
―
0.25
G
0.38
―
1.27
H
0.18
―
0.25
α
0°
―
8°
8
January 28, 2011
HT16x2Tx/HT12x2Tx
216/212 RF Encoder
Package Information
Product Tape and Reel Specifications
Reel
Dimensions
Reel
Dimensions
SOP 28W (300mil)
SSOP 20S (150mil)
Symbol
Symbol
A A
B
B
C
D C
T1
D
T2
T1
T2
Description
Description
Reel
Outer
Diameter
Reel
Outer
Diameter
Reel Inner Diameter
Reel Inner Diameter
Spindle Hole Diameter
Hole Diameter
KeySpindle
Slit Width
Space Between Flange
Key Slit Width
Reel Thickness
Space Between Flange
Dimensions
mm
Dimensions
in in
mm
330.0±1.0
330.01.0
100.0±1.5
100.01.5
13.0 +0.5/-0.2
13.0 +0.5/-0.2
2.0±0.5
16.8 +0.3/-0.2
2.00.5
22.2±0.2
24.8 +0.3/-0.2
Reel Thickness
30.20.2
2
Rev. 1.00
9
April 1, 2010
January 28, 2011
HT16x2Tx/HT12x2Tx
16 12
2Package
/2 RFInformation
Encoder
Carrier
Tape Tape
Dimensions
Carrier
Dimensions
 20S (150mil)
SOPSSOP
28W (300mil)
Symbol
Description
Symbol
Description
W
Carrier Tape Width
Carrier
Tape Width
PW
Cavity
Pitch
E
Perforation Position
P
Cavity Pitch
F
Cavity to Perforation (Width Direction)
Perforation
Position
DE
Perforation
Diameter
A0
D1
B0
K0P0
Cavity Hole Diameter
Cavity to Perforation (Width Direction)
Perforation Pitch
Perforation
Diameter
Cavity
to Perforation
(Length Direction)
Cavity
Length
Cavity Hole Diameter
Cavity Width
Perforation
Cavity
Depth Pitch
Dimensions in mm
Dimensions
in mm
16.0+0.3/-0.1
24.00.3
8.0±0.1
1.75±0.10
12.00.1
7.5±0.1
+0.1/-0.0
1.750.10
1.5
+0.25/-0.00
1.50
11.50.1
4.0±0.1
+0.1/-0.0
1.5
2.0±0.1
+0.25/-0.00
6.5±0.1
1.50
9.0±0.1
4.00.1
2.3±0.1
tP1
C
A0
Carrier
Thickness(Length Direction)
CavityTape
to Perforation
Cover Tape Width
Cavity Length
0.30±0.05
2.00.1
13.3±0.1
10.850.10
D1
F
P0
P1D
B0
Cavity Width
18.340.10
K0
Cavity Depth
2.970.10
t
Carrier Tape Thickness
0.350.01
C
Cover Tape Width
21.30.1
Rev. 1.00
10
3
January 28, 2011
April 1, 2010
HT16x2Tx/HT12x2Tx
216/212 RF Encoder
Holtek Semiconductor Inc. (Headquarters)
No.3, Creation Rd. II, Science Park, Hsinchu, Taiwan
Tel: 886-3-563-1999
Fax: 886-3-563-1189
http://www.holtek.com.tw
Holtek Semiconductor Inc. (Taipei Sales Office)
4F-2, No. 3-2, YuanQu St., Nankang Software Park, Taipei 115, Taiwan
Tel: 886-2-2655-7070
Fax: 886-2-2655-7373
Fax: 886-2-2655-7383 (International sales hotline)
Holtek Semiconductor Inc. (Shenzhen Sales Office)
5F, Unit A, Productivity Building, No.5 Gaoxin M 2nd Road, Nanshan District, Shenzhen, China 518057
Tel: 86-755-8616-9908, 86-755-8616-9308
Fax: 86-755-8616-9722
Holtek Semiconductor (USA), Inc. (North America Sales Office)
46729 Fremont Blvd., Fremont, CA 94538, USA
Tel: 1-510-252-9880
Fax: 1-510-252-9885
http://www.holtek.com
Copyright© 2011 by HOLTEK SEMICONDUCTOR INC.
The information appearing in this Data Sheet is believed to be accurate at the time of publication. However,
Holtek assumes no responsibility arising from the use of the specifications described. The applications
mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or
representation that such applications will be suitable without further modification, nor recommends the use
of its products for application that may present a risk to human life due to malfunction or otherwise. Holtek's
products are not authorized for use as critical components in life support devices or systems. Holtek reserves
the right to alter its products without prior notification. For the most up-to-date information, please visit our
web site at http://www.holtek.com.tw.
Rev. 1.00
11
January 28, 2011
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