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| 型号： | SM1230E868 |
| 厂商： | Semtech |
| 文件页数： | 28/46页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL XMITTER FOR SX1230 |
| 设计资源： | SM1230 BOM SX1230 Eval Board Schematic |
| 标准包装： | 1 |
| 类型： | 发射器 |
| 频率： | 868MHz |
| 适用于相关产品： | SX1230 |
| 已供物品： | 板 |
| 产品目录页面： | 584 (CN2011-ZH PDF) |
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SX1230
Integrated Transmitter IC
ADVANCED COMMUNICATIONS & SENSING
7.2. SX1230 MCU Mode Application Circuit
DATASHEET
EOL
100 nF
VCC
100 nF
C TX
3V
PB(3:1)
PB0
VBAT
CLKOUT
OSC1
DATA
DCLK
IO
IO
MISO
SI
MCU
SX1230
MOSI
SO
Match
L M
RFOUT
SCK
NSS
VR_ANA
VR_DIG
S C K
CS
10 nF
VR_PA
XTA
XTB
GND
MODE
VSS
100 nF
100 nF
15 pF
32 MHz
15 pF
Figure 11. Interfacing the SX1230 to an MCU
Figure 11 shows conventional MCU mode configuration of the SX1230 - here the interface to the SX1230 is performed
using 5 MCU pins. In this mode the MCU acts as SPI master exercising total control of the SX1230. For further economy
the MCU clock may be driven using the clock output of the SX1230 which can provide several fractions of the crystal
oscillator frequency from the fundamental to 1/32 depending upon the setting of clkout_select(2:0).
7.3. Complete RKE Application Circuit
Compatible Semtech receivers for RKE applications are the SX1213 (315 and 434 MHz bands) and the SX1210 (868 and
915 MHz ISM bands), the application circuit for which is shown in the proceeding figure. With both transmitter and receiver
configured for wide-band operation, (frequency deviation of 150 kHz), and both devices employing crystals with 50ppm
frequency stability, the worst case frequency error between Tx and Rx is 31.5 kHz.
SX1230, Revision 2 May 2009
?2008 Semtech Corp.
Page 28
www.semtech.com
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相关代理商/技术参数 |
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| SM1230-XAX | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Power Optimizers Partial Deployment for Single String Systems |
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| SM1231E433 | 制造商:Semtech Corporation 功能描述:Development Module for SX1231 433MHz Low Power Integrated UHF Transceiver 制造商:SEMTECH 功能描述:Development Module for SX1231 433MHz Low Power Integrated UHF Transceiver |
| SM1231E433A | 制造商:Semtech Corporation 功能描述:SX1231 RF MODULE 433 MHZ |
| SM1231E868 | 制造商:Semtech Corporation 功能描述:Development module for SX1231 868MHz Low Power Integrated UHF Transceiver 制造商:SEMTECH 功能描述:Development module for SX1231 868MHz Low Power Integrated UHF Transceiver |
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