收藏本站
AS3930
Datasheet - D e t a i l e d D e s c r i p t i o n
Figure 19. Concept of False Wake-up Register Together with 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 has higher precision of the frequency but a 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 was 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
(EQ 1)
Where:
F CAR is the carrier frequency
F RTC is the RTC frequency
Note: 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).
www.ams.com/LF-Receiver/AS3930
Revision 1.5
25 - 32
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
AS3930-BTST IC ASK RECEIVER 1CH LP 16-TSSOP
AS3931-ZTSU IC ASK RECEIVER LF 3CH 16-TSSOP
AS3932-BTST IC RF PROGRAM 16-TSSOP
AS500106 TLAPS MAGNET CARRIER
AS5263-HQFT-500 IC ENCODER ROTARY 12BIT 32-QFN
AT 150 B420L SENSOR CURRENT 150A 30V MOD
AT 150 B5 SENSOR CURRENT 150A MOD
AT 20 B10 SENSOR CURRENT 20A MOD
相关代理商/技术参数
AS3930-BTST 功能描述:IC ASK RECEIVER 1CH LP 16-TSSOP RoHS:是 类别:RF/IF 和 RFID >> RFID IC 系列:- 其它有关文件:CR14 View All Specifications 标准包装:1 系列:- RF 型:收发器 频率:13.56MHz 特点:ISO14443-B 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SO 包装:Digi-Reel® 其它名称:497-5719-6
AS3930-DB 制造商:ams 功能描述:AS3930 Demo Board
AS3931 制造商:AMS 功能描述:AS Series 19 to 150 kHz Surface Mount 3D Wakeup Receiver - TSSOP-16
AS3931 DB 制造商:AMS 功能描述:BOARD DEMO FOR AS3931 制造商:AMS 功能描述:Demoboard for AS3931 3D Low Power Wakeup Receiver
AS39310FLF 制造商:TT Electronics / IRC 功能描述:AS39310FLF
AS39310HLF 制造商:TT Electronics / IRC 功能描述:AS39310HLF
AS39310JLF 制造商:TT Electronics / IRC 功能描述:AS39310JLF
AS39311FLF 制造商:TT Electronics / IRC 功能描述:AS39311FLF