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参数资料
| 型号： | SI4022-A1-FT |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 13/20页 |
| 文件大小： | 726K |
| 描述： | IC TX FSK 915MHZ 3.8V 16-TSSOP |
| 标准包装： | 96 |
| 频率： | 868MHz，915MHz |
| 应用： | ISM |
| 调制或协议： | FSK |
| 数据传输率 - 最大： | 115.2kbps |
| 功率 - 输出： | 6dBm |
| 电流 - 传输： | 24mA |
| 数据接口： | PCB，表面贴装 |
| 天线连接器： | PCB，表面贴装 |
| 电源电压： | 2.2 V ~ 3.8 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm 宽） |
| 包装： | 管件 |
| 其它名称： | 336-1623-5 |
13
Si4022
bit 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
POR
1
1
0
0
1
0
0
0
cs
r6
r5
r4
r3
r2
r1
r0
C813h
Data Rate Command
The bit rate of the transmitted data stream is determined by the 7-bit value R (bits r6 to r0) and the 1 bit cs.
BR = 10 MHz / 29 / (R+1) / (1 + cs*7)
In the receiver set R according the next function:
R= (10 MHz / 29 /(1 + cs*7)/ BR) 1
Apart from setting custom values, the standard bit rates from 600 bps to 115.2 kbps can be approximated with small error.
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
d2 d1 d0 elfc t3 t2 t1 t0
C213h
d2
d1 d0
Clock Output
Frequency [MHz]
0
0
0
1
0
0
1
1.25
0
1
0
1.66
0
1
1
2
1
0
0
2.5
1
0
1
3.33
1
1
0
5
1
1
1
10
Low Battery and Microcontroller Clock Divider Command
The 4-bit value T of t3-t0 determines the threshold voltage of the threshold voltage V
lb
of the detector:
V
lb
= 2.0 V + T * 0.1 V
Bit 4 <elfc>:
Enables low frequency (32 kHz) microcontroller output clock during sleep mode.
Clock divider configuration (valid only if the crystal oscillator is on):
bit 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
POR
1
1
1
0
r3
r2
r1
r0 m7 m6 m5 m4 m3 m2 m1 m0
E196h
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
1
d1 d0 m13 m12 m11 m10 m9 m8
C300h
Wake-Up Timer Command
The wake-up time period can be calculated by M <m13 : m0> , R <r3 : r0> and D <d1 : d0>:
T
wake-up
= M * 2
R-D
ms
Note
Note
Note
Note
Note:" The wake-up timer generates interrupts continuously at the programmed interval while the et bit is set.
Extended Wake-Up Timer Command
These bits can be used for further fine adjustment of the wake-up timer. The explanation of the bits can be found above.
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