参数资料
型号: MICRF507YML TR
厂商: Micrel Inc
文件页数: 14/47页
文件大小: 0K
描述: TXRX FSK LOW PWR W/AMP 32MLF
特色产品: MICRF507 Low-Power FSK Transceiver
标准包装: 1
系列: RadioWire®
频率: 470MHz ~ 510MHz
数据传输率 - 最大: 200kbps
调制或协议: FSK
应用: AMR,ISM,SRD
功率 - 输出: 10dBm
灵敏度: -113dBm
电源电压: 2 V ~ 2.5 V
电流 - 接收: 12mA
电流 - 传输: 21.5mA
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: 标准包装
其它名称: 576-3694-6
MICRF507YML TRDKR
MICRF507YML TRDKR-ND
f c =
min time =
Micrel, Inc.
Control Interface Timing
Figure 4 and Table 2 give the timing specifications for the
control interface.
When in Receive or Transmit mode (but not Power-down
or Standby mode), an additional timing constraint applies:
elapsed time between falling edges of CS must be a
minimum of 2/f c , where f c is the synthesizer’s comparison
frequency (also called phase detector frequency). f c =
f XCO /M,
f XCO
M
2M
f XCO
where M = M0 when receiving or transmitting with VCO
modulation, and M = max{M0, M1} when transmitting with
divider modulation.
Values
MICRF507
Power-on Reset
The power-on reset time (t POR ), given in Table 2, is defined
as the time from application of supply voltage to
completion of power on reset.
To determine when the chip has completed its power-on
without waiting for the worst-case time (maximum t POR ) , do
the following:
? Write hex 03 (binary 00000011) to Register 0.
This puts the chip in Standby mode.
? Read Register 0. If the value read is binary
00000011, then exit; power-on is complete. If not,
go to previous step and repeat.
Because registers are initially in an unknown state after
power-on (exception: Mode[1:0] initializes to 00), always
enter a complete set of register values as the first
transaction, and always enter only nonzero values for N
and M.
Symbol
Parameter
Min.
Typ.
Max.
Units
T high
T low
t fall
t rise
Min. high time of
SCLK
Min. low time of
SCLK
Fall time of SCLK
Rise time of SCLK
20
20
1
1
ns
ns
μs
μs
Time from rising
T csr
edge of CS to
falling edge of
50
ns
SCLK
Min. delay from
T csf
rising edge of CS
to rising edge of
25
ns
SCLK
Min. delay from
valid IO to falling
T write
edge of SCLK
20
ns
during a write
operation
Min. delay from
rising edge of
SCLK to valid IO
T read
during a read
operation
75
ns
Figure 5. Power-On Programming Flowchart
(assuming load
capacitance of IO
is 25pF)
t POR
Power on Reset
time
4.6
9
ms
Table 1. Control Interface Timing
October 2, 2013
14
Revision 2.2
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