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参数资料
| 型号： | MICRF505BML TR |
| 厂商： | Micrel Inc |
| 文件页数： | 10/42页 |
| 文件大小： | 0K |
| 描述： | TXRX ISM 868-915MHZ 32-MLF |
| 标准包装： | 1,000 |
| 频率： | 850MHz ~ 950MHz |
| 数据传输率 - 最大： | 200kbps |
| 调制或协议： | FSK |
| 应用： | 遥测，无线控制器 |
| 功率 - 输出： | 10dBm |
| 灵敏度： | -111dBm |
| 电源电压： | 2.3 V ~ 5.5 V |
| 电流 - 接收： | 13.5mA |
| 电流 - 传输： | 28mA |
| 数据接口： | PCB，表面贴装 |
| 天线连接器： | PCB，表面贴装 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 32-VFQFN 裸露焊盘，32-MLF? |
| 包装： | 带卷 (TR) |
| 其它名称： | MICRF505BMLTR MICRF505BMLTR-ND |
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should be written to, the address of the 1
Micrel
Writing to the control registers in MICRF505
Writing: A number of octets are entered into
MICRF505 followed by a load-signal to activate the
new setting. Making these events is referred to as a
“write sequence.” It is possible to update all, 1, or n
control registers in a write sequence. The address to
write to (or the first address to write to) can be any
valid address (0-21). The IO line is always an input
to the MICRF505 (output from user) when writing.
What to write:
? The address of the control register to be
written (or if more than 1 control register
st
MICRF505BML/YML
The two different ways to “program the chip” are:
? Write to a number of control registers (0-22)
when the registers have incremental
addresses (write to 1, all or n registers)
? Write to a number of control registers when
the registers have non-incremental
addresses.
Writing to a Single Register
Writing to a control register with address “A6. A5,
…A0” is described here. During operation, writing to
1 register is sufficient to change the way the
transceiver works. Typical example: Change from
receive mode to power-down.
?
control register to write to).
A bit to enable reading or writing of the
control registers. This bit is called the R/W
bit.
What to write:
Field Comments
Address: 7 bit = A6, A5, …A0 (A6 = msb. A0 = lsb)
?
The values
register(s).
to
write
into
the
control
R/W bit:
Values:
“0” for writing
8 bits = D7, D6, …D0 (D7 = msb, D0 = lsb)
Table 3.
What to write:
“Address” and “R/W bit” together make 1 octet.
Field
Address:
R/W bit:
Comments
A 7-bit field, ranging from 0 to 21. MSB is
written first.
A 1-bit field, = “0” for writing
In addition, 1 octet with programming bits is entered. In
total, 2 octets are clocked into the MICRF505.
How to write:
Values:
A number of octets (1-22 octets). MSB in
every octet is written first. The first octet is
written to the control register with the
specified address (=”Address”). The next
?
?
?
Bring CS high
Use SCLK and IO to clock in the 2 octets
Bring CS low
octet (if there is one) is written to the control
register with address = “Address + 1” and so
on.
CS
Table 2.
How to write:
SCLK
Bring CS active to active to start a write sequence.
IO
A6
A5
A0
RW
D7
D6
D2
D1
D0
The active state of the CS line is “high.” Use the
SCLK/IO serial interface to clock “Address” and
“R/W ” bit and “Values” into the MICRF505.
MICRF505 will sample the IO line at negative edges
Address of register i
RW
Data to write into register i
Internal load pulse made here
of SCLK. Make sure to change the state of the IO
line before the negative edge. Refer to figures
below.
Bring CS inactive to make an internal load-signal
and complete the write-sequence. Note: there is an
exception to this point. If the programming bit called
“load_en” (bit0 in ControlRegister0) is “0”, then no
load pulse is generated.
Figure 1.
In Figure 1, IO is changed at positive edges of SCLK. The
MICRF505 samples the IO line at negative edges. The
value of the R/W bits is always “0” for writing.
October 2006
10
M9999-103106
+1 408-944-0800
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MICRF505DEV1 | 功能描述:射频开发工具 MICRF505 Evaluation Kit - For experimental use only RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V |
| MICRF505DEV1 | 制造商:Micrel Inc 功能描述:KIT MICRF505 EVALUATION |
| MICRF505L | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:850MHz and 950MHz ISM Band Transceiver |
| MICRF505LYML | 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: |
| MICRF505LYML TR | 功能描述:射频收发器 850MHz to 950MHz, 2.25V to 5.5V FSK Transceiver with +10dBm Power Amplifier RoHS:否 制造商:Atmel 频率范围:2322 MHz to 2527 MHz 最大数据速率:2000 Kbps 调制格式:OQPSK 输出功率:4 dBm 类型: 工作电源电压:1.8 V to 3.6 V 最大工作温度:+ 85 C 接口类型:SPI 封装 / 箱体:QFN-32 封装:Tray |
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