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參數(shù)資料
| 型號： | W55RFS27T1BW |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | SUPER-REGENERATION RF TRANSMITTER |
| 中文描述： | 超再生RF發(fā)射器 |
| 文件頁數(shù)： | 3/17頁 |
| 文件大小： | 345K |
| 代理商： | W55RFS27T1BW |
W55RFS27T1B
Publication Release Date:May 24, 2005
- 3 -
Revision A3
1.2 W55RFS27T1B Pad Definition
1.2.1 Pad Description
SYMBOL
PAD
NO.
I/O
FUNCTIONAL DESCRIPTION
S3
1
I
Manual-mode input, internal pull-high
S4
2
I
Manual-mode input , internal pull-high
CKSEL0
3
I
Clock frequency select LSB (
please see section 1.2.2 for setup
)
TEST
4
I
TEST=0 for 6-function mode, TEST=1 for 4-function mode
CKSEL1
5
I
Clock frequency select MSB (
please see section 1.2.2 for setup
)
ANT
6
O
RF signal output. An external matching circuit is necessary for
connecting with an antenna.
GND
7
Ground
Ground return path
VDD
8
Power
Power path
RESET
9
I
RESET=0 resets whole chip, internal pull-high
X1
10
I
Input of internal crystal oscillator to connect to an external crystal
X2
11
O
Output of internal crystal oscillator to connect to an external crystal
ID1
12
I
ID setting MSB (
please see section 1.2.3 for setup
)
ID0
13
I
ID setting LSB (
please see section 1.2.3 for setup
)
TXOUT
14
O
TXD Data output
S1/~TXD
15
I
Manual-mode input or uC-mode: ~TXD, internal pull-high
S2/~ENB
16
I
Manual-mode input or uC-mode: ~ENB, internal pull-high
1.2.2 Clock Frequency Select (CKSEL) Setup
(CKSEL1,CKSEL0)
CLOCK FREQUENCY
(0,0)
27.145 MHz
(0,1)
35.48 MHz
(1,0)
40.68 MHz
(1,1)
49.86 MHz
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