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| 型号： | AS3932-BTST |
| 厂商： | ams |
| 文件页数： | 27/34页 |
| 文件大小： | 0K |
| 描述： | IC RF PROGRAM 16-TSSOP |
| 标准包装： | 1 |
| RF 型： | 读/写 |
| 频率： | 110kHz ~ 150kHz |
| 特点： | 配有 RSSI |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-TSSOP |
| 包装： | 标准包装 |
| 产品目录页面： | 805 (CN2011-ZH PDF) |
| 其它名称： | AS3932-BTSTDKR |
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AS3932
Datasheet - D e t a i l e d D e s c r i p t i o n
Figure 20. Concept of the False Wake-up Register together with the system
Frequency Detector
Wakeup
Level 1
Pattern Correlator
Wakeup
Level 2
WAKE
Unsuccessful
pattern
correlation
Register Setup
False wakeup
register
READ FALSE WAKEUP REGISTER
Microcontroller
8.8 Real Time Clock (RTC)
The RTC can be based on a crystal oscillator ( R1<0> =1), the internal RC-oscillator ( R1<0> =0), or an external clock source ( R1<0> =1). The
crystal oscillator has higher precision of the frequency with higher current consumption and needs three external components (crystal plus two
capacitors). The RC-oscillator is completely integrated and can be calibrated if a reference signal is available for a very short time to improve the
frequency accuracy. The calibration gets started with the trim_osc direct command. Since no non-volatile memory is available the calibration
must be done every time after the RCO is turned off. The RCO is turned off when the chip is in power down mode, a POR happened, or the
crystal oscillator is enabled. Since the RTC defines the time base of the frequency detection, the selected frequency (frequency of the crystal
oscillator or the reference frequency used for calibration of the RC oscillator) should be about one forth of the carrier frequency:
F RTC ~ F CAR * 0.25
Where: F CAR is the carrier frequency and F RTC is the RTC frequency
The third option for the RTC is the use of an external clock source, which must be applied directly to the XIN pin (XOUT floating).
(EQ 1)
www.ams.com/LF-Receiver/AS3932
Revision 1.7
27 - 34
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相关代理商/技术参数 |
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| AS3932-DB | 制造商:ams 功能描述:AS3932 Demo Board Rx & Tx |
| AS3932-DK | 制造商:ams 功能描述:AS3932 Development System |
| AS3933 DB | 制造商:AMS 功能描述:BOARD DEMO FOR AS3933 |
| AS3933 DEV SYSTEM | 功能描述:BOARD DEMO FOR AS3933 制造商:ams 系列:- 零件状态:有效 类型:接收器，ASK 频率:125kHz 配套使用产品/相关产品:AS3933 所含物品:2 板，电源，软件 标准包装:1 |
| AS3933BQFT | 制造商:ams 功能描述:T&R / QFN 16 (4x4) |
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