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6 Microcontroller Interface
This section describes the Atmel AT86RF232 to microcontroller interface. The interface
comprises a slave SPI and additional control signals; see Figure 6-1 . The SPI timing
and protocol are described below.
Figure 6-1. Microcontroller to AT86RF232 Interface.
Microcontroller
/SEL
MOSI
MISO
SCLK
GPIO1/CLK
GPIO2/IRQ
GPIO3
GPIO4
GPIO5
SPI
/SEL
MOSI
MISO
SCLK
CLKM
IRQ
SLP_TR
/RST
DIG2
AT86RF232
/SEL
MOSI
MISO
SCLK
CLKM
IRQ
SLP_TR
/RST
DIG2
Microcontrollers with a master SPI such as Atmel AVR family interface directly to the
AT86RF232. The SPI is used for register, Frame Buffer, SRAM and AES access. The
additional control signals are connected to the GPIO/IRQ interface of the
microcontroller. Table 6-1 introduces the radio transceiver I/O signals and their
functionality.
Table 6-1. Signal Description of Microcontroller Interface.
Signal
/SEL
MOSI
MISO
SCLK
CLKM
IRQ
SLP_TR
Description
SPI select signal, active low
SPI data (master output slave input) signal
SPI data (master input slave output) signal
SPI clock signal
Optional, Clock output, refer to Section 9.6.4 , usable as:
- microcontroller clock source
- high precision timing reference
Interrupt request signal, further used as:
- Frame Buffer Empty indicator, refer to Section 11.5
Multi purpose control signal (functionality is state dependent, see Section 6.5 ):
- Sleep/Wakeup
- TX start
enable/disable SLEEP state
BUSY_TX_(ARET) state
/RST
DIG2
AT86RF232 reset signal, active low
Optional,
- IRQ_2 (RX_START) for RX Frame Time Stamping, see Section 11.4
- Signals frame transmit within TX_ARET mode for TX Time Stamping
14
AT86RF232
8321A – MCU Wireless – 10/11
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相关代理商/技术参数
AT86RF232-ZXR
功能描述:射频收发器 2.4 GHZ ZIGBEE TRANSCEIVER
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
AT86RF233-ZF
功能描述:IC RF TXRX+MCU 802.15.4 32-VFQFN 制造商:microchip technology 系列:- 包装:托盘 零件状态:在售 类型:TxRx + MCU 射频系列/标准:802.15.4，通用 ISM > 1GHz 协议:6LoWPAN，Zigbee? 调制:O-QPSK 频率:2.4GHz 数据速率（最大值）:2Mbps 功率 - 输出:4dBm 灵敏度:-101dBm 存储容量:128B SRAM 串行接口:SPI 电压 - 电源:1.8 V ~ 3.6 V 电流 - 接收:11.3mA ~ 11.8mA 电流 - 传输:7.2mA ~ 13.8mA 工作温度:-40°C ~ 125°C 封装/外壳:32-VFQFN 裸露焊盘 标准包装:490
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AT86RF233-ZU
功能描述:射频收发器 2.4GHz ZigBee Transceiver
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
AT86RF233-ZUR
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制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Smart RF Wireless Data Microtransmitter
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