參數(shù)資料
型號(hào): SI4021-A1-FT
廠商: Silicon Laboratories Inc
文件頁數(shù): 16/34頁
文件大?。?/td> 783K
描述: IC TX FSK 915MHZ 5.4V 16-TSSOP
標(biāo)準(zhǔn)包裝: 96
頻率: 433MHz,868MHz,915MHz
調(diào)制或協(xié)議: FSK,OOK
數(shù)據(jù)傳輸率 - 最大: 512kbps
功率 - 輸出: 8dBm
電流 - 傳輸: 24mA
數(shù)據(jù)接口: PCB,表面貼裝
天線連接器: PCB,表面貼裝
電源電壓: 2.2 V ~ 5.4 V
工作溫度: -40°C ~ 85°C
封裝/外殼: 16-TSSOP(0.173",4.40mm 寬)
包裝: 管件
產(chǎn)品目錄頁面: 585 (CN2011-ZH PDF)
其它名稱: 336-1622-5
Si4021
 
 
16
6. Low Battery Detector Command
bit     15     14     13     12     11     10
9
8
7
6
5
4
3
2
1
0
POR
 
1
1
0
0
0
0
1
0     dwc
0     ebs    t4
t3
t2
t1
t0
C200h
Bit 7 <dwc> Disables the Wake-up timer periodical (every 30 second) calibration if this bit is set.
Bit 5 <ebs> Enables the TX bit synchronization circuit. The data rate must be set by the Data Rate Command.
 
The 5-bit value T of <t4 : t0> determines the threshold voltage V
lb
 of the detector:
 
V
lb
 = 2.25 V + T * 0.1 V 
7. Sleep Command
bit     15     14     13     12     11     10
9
8
7
6
5
4
3
2
1
0
POR
 
1
1
0
0
0
1
0
0
s7     s6     s5     s4     s3     s2     s1     s0
C410h
The effect of this command depends on the Power Management Command. It immediately disables the power amplifier (if a0=1 and ea=0)
and the synthesizer (if a1=1 and es=0). Stops the crystal oscillator after S periods of the microcontroller clock (if a1=1 and ex=0) to enable
the microcontroller to execute all necessary commands before entering sleep mode itself. The 8-bit value S is determined by bits <s7 : s0>.
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