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PDF W55RFS27T1B Data sheet ( Hoja de datos )
| Número de pieza | W55RFS27T1B | |
| Descripción | Super-Regeneration RF Transmitter | |
| Fabricantes | nuvoton | |
| Logotipo |  |
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W55RFS27T1B DataSheet
Super-Regeneration RF Transmitter
W55RFS27T1B
Data Sheet
1
Revision: A3.0
Publish Date: Feb. 2010
1 page  
W55RFS27T1B DataSheet
1.2.3 uC-Mode & Manual Mode (Baseband Data Rate) Setup
(ID1,ID0)
Function
Encoder Time Base
(0,0)
Data Rate= 2.5KBPS
T=200us
(0,1)
Data Rate= 1.25KBPS
T=400us
(1,0)
Data Rate= 0.625KBPS
T=800us
(1,1)
uC- Mode
External controlled
(Note: W55RFS27R1B Data Rate=1.25KBPS; W55RFS27R1A Data Rate=2.5KBPS)
1.2.4 Baseband Encoder Control Function Description
Input pin name
Connect to
6-Function
(TEST=0)
4-Function
(TEST=1)
Default (pull high)
F = 0, B = 0
F=0
S1
GND
F = 0, B = 1
F=1
TXOUT
F = 1, B = 0
-
Default (pull high)
F = 0, B = 0
B=0
S2
GND
F = 0, B = 1
B=1
TXOUT
F = 1, B = 0
-
S3
Default (pull high)
F1 = 0
GND
F1 = 1
L=0
L=1
S4
Default (pull high)
F2 = 0
GND
F2 = 1
R=0
R=1
(Note: F Forward; B Backward; L Left-turn; R Right-turn; F1, F2 Two User-defined function)
5
Revision: A3.0
Publish Date: Feb. 2010
5 Page 
W55RFS27T1B DataSheet
4.1.2 Application Circuit for 6 Control Functions
Set TEST = 0,
1. Used when need F1 and F2.(more than 4 control functions)
2. When use 9V battery, an external power switch is required for power-saving
3. Need extra components to light LED
V SP LY
T XOUT
T XOUT
SW1
Fo rward
SW3
Le ft tu rn
S 1 R3 1K
SW2
B ackward
S 2 R4 1K
SW4
Rig ht turn
Input Protection
30 0 LE D
R5 LE D1
10 0u
C0
1N41 48
D1
1N41 48
D2
S1 S2
LED control circuit
S W5 F1
S W6 F2
CKS E L0
CKS E L1
V DD
V DD
C18 +
10 u
U1
1 S3
S2
2 S4
S1
3 CKS E L0
T XOUT
4 T ES T
ID0
5 CKS E L1
ID1
6
A NT
X2
7 V SS
X1
8
V DD
RES E T
W5 5RFS 27T 3B
C19
47 n
16
15
14
13
12
11
10
9
S2
S1
T XOUT
ID0
ID1
C8 7p
49 .8 6MHz
R1 Overtone Crystal
20 K
A NT E NNA
L1
39 nH
L2 C13 47 n
1u H
Dependent on Antenna
C7
24 0p
JP3
1
2
P ower In
V DD
BT1
B AT
JP6
1
2
3
ID0
V DD
ID0
JP7
1
2
3
ID1
V DD
ID1
L7
1u H
C33
47 n
C9
7p
* 27MHz,(L1,C7)= (56nH, 470pF), (L7,C33)=none
* 35MHz,(L1,C7)= (47nH, 360pF), (L7,C33)=(3.3uH,47n)
* 40MHz,(L1,C7)= (47nH, 300pF), (L7,C33)=(2.2uH,47n)
* 49MHz,(L1,C7)= (39nH, 240pF), (L7,C33)=(1uH,47n)
CKS E L0
V DD
CKS E L1
For 49MHZ
T itl e
S ize
A
Date:
W5 5RFS 27T 3B Ap pl ic atio n Ci rcui t (49MHz)
Docu ment Nu mber
{Do c}
T ues day, Jul y 06, 200 4
S hee t
1
Rev
{Re vCo de}
of 1
W55RFS27T1B Application Schematic BOM(6-function):
Item Qty
Reference
Part
________________________________________________________________________________
1 1 C7
240p
2 2 C8,C9
7p
3
3
C13,C19,C33
47n
4 1 C18
10u
5 1 L1
39nH
6 2 L2,L7
1uH
7 1 R1
20K
8 1 U1
W55RFS27T1B
9 1 Y1
49.86MHz
11
Revision: A3.0
Publish Date: Feb. 2010
11 Page | ||
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