参数资料
型号: AT86RF232-ZX
厂商: Atmel
文件页数: 24/175页
文件大小: 0K
描述: 2.4 GHZ ZIGBEE TRANSCEIVER
产品培训模块: AT86RF232 Low Power 2.4 GHz Wireless Transceiver
标准包装: 2,450
频率: 2.4GHz
数据传输率 - 最大: 250kbps
调制或协议: 802.15.4 Zigbee,6LoWPAN,ISM
应用: 通用
功率 - 输出: 3dBm
灵敏度: -100dBm
电源电压: 1.8 V ~ 3.6 V
电流 - 接收: 11.8mA
电流 - 传输: 13.8mA
数据接口: PCB,表面贴装
天线连接器: PCB,表面贴装
工作温度: 0°C ~ 70°C
封装/外壳: 32-VFQFN 裸露焊盘
包装: 托盘
6.5 Sleep/Wake-up and Transmit Signal (SLP_TR)
Pin 11 (SLP_TR) is a multi-functional pin. Its function relates to the current state of the
Atmel AT86RF232 and is summarized in Table 6-9 . The radio transceiver states are
explained in detail in Chapter 7 .
Table 6-9. SLP_TR Multi-functional Pin.
Transceiver Status
Function
Transition Description
PLL_ON
TX_ARET_ON
TRX_OFF
SLEEP
TX start
TX start
Sleep
Wakeup
L ? H
L ? H
L ? H
H ? L
Starts frame transmission
Starts TX_ARET transaction
Takes the radio transceiver into SLEEP state, CLKM disabled
Takes the radio transceiver back into TRX_OFF state, level sensitive
In states PLL_ON and TX_ARET_ON, pin 11 (SLP_TR) is used as trigger input to
initiate a TX transaction. Here SLP_TR is sensitive on rising edge only.
After initiating a state change by a rising edge at pin 11 (SLP_TR) in radio transceiver
state TRX_OFF, the radio transceiver remains in the new state as long as the pin is
logical high and returns to the preceding state with the falling edge.
SLEEP state
The SLEEP state is used when radio transceiver functionality is not required, and thus
the AT86RF232 can be powered down to reduce the overall power consumption.
A power-down scenario is shown in Figure 6-20 . When the radio transceiver is in
TRX_OFF state the microcontroller forces the AT86RF232 to SLEEP by setting
SLP_TR = H. If pin 17 (CLKM) provides a clock to the microcontroller this clock is
switched off after 35 CLKM cycles. The AT86RF232 awakes when the microcontroller
releases pin 11 (SLP_TR).
The CLKM clock frequency setting for 62.5kHz are not intended to directly clock the
microcontroller. When using these clock rates, CLKM is turned off immediately when
entering SLEEP state.
Figure 6-20. Sleep and Wake-up Initiated by Asynchronous Microcontroller Timer.
SLP_TR
CLKM
t TR1a
t TR3 (35 CLKM clock cycles)
CLKM off
async timer elapses
(microcontroller)
24
AT86RF232
Note:
1.
Timing figures t TR3 and t TR1a refer to Table 7-1 .
8321A – MCU Wireless – 10/11
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