參數(shù)資料
型號(hào)： NRF9E5-EVKIT915
廠商： Electronic Theatre Controls, Inc.
英文描述： 433/868/915MHz RF Transceiver with Embedded 8051 Compatible Microcontroller and 4 Input, 10 Bit ADC
中文描述： 433/868/915MHz RF收發(fā)器與8051兼容的嵌入式微控制器和4輸入，10位ADC
文件頁(yè)數(shù)： 57/104頁(yè)
文件大小： 1436K
代理商： NRF9E5-EVKIT915
PRODUCT SPECIFICATION
nRF9E5 Single Chip Transceiver with Embedded Microcontroller and ADC
Main office: Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway -Phone +4772898900 - Fax +4772898989
Revision: 1.1
Page 57 of 104
June 2004
17
POWER SAVING MODES
nRF9E5 provides the two industry standard 8051 power saving modes: idle mode and
stop mode. To Achieve more power saving several additional power-down modes are
provided, where both oscillator and internal power regulators may be turned off.
The bits that control entry into idle and stop modes are in the PCON register at SFR
address 0x87, listed in Table 49. The bits that control entry into power down mode are in
the CK_CTRL register at SFR address 0xB6, listed in Table 51.
Bit
PCON.7
Function
SMOD – Serial Port baud-rate doubler enable. When SMOD = 1, the baud rate for
Serial Port is doubled.
Reserved.
GF1 – General purpose flag 1. Bit-addressable, general purpose flag for software
control.
GF0 – General purpose flag 0. Bit-addressable, general purpose flag for software
control.
STOP – Stop mode select. Setting the STOP bit places the nRF9E5 in stop mode.
IDLE – Idle mode select. Setting the IDLE bit places the nRF9E5 in idle mode.
PCON.6–4
PCON.3
PCON.2
PCON.1
PCON.0
Table 49 PCON Register – SFR 0x87.
17.1
Standard 8051 Power Saving Modes
17.1.1
Idle Mode
An instruction that sets the IDLE bit (PCON.0) causes the nRF9E5 to enter idle mode
when that instruction completes. In idle mode, CPU processing is suspended and internal
registers and memory maintain their current data. However, unlike the standard 8051,
the CPU clock is not disabled internally, thus not much power is saved.
There are two ways to exit idle mode: activate any enabled interrupt or watchdog reset.
Activation of any enabled interrupt causes the hardware to clear the IDLE bit and
terminate idle mode. The CPU executes the ISR associated with the received interrupt.
The RETI instruction at the end of the ISR returns the CPU to the instruction following
the one that put the nRF9E5 into idle mode. A watchdog reset causes the nRF9E5 to exit
idle mode, reset internal registers, execute its reset sequence and begin program
execution at the standard reset vector address 0x0000.
17.1.2
Stop Mode
An instruction that sets the STOP bit (PCON.1) causes the nRF9E5 to enter stop mode
when that instruction completes. Stop mode is identical to idle mode, except that the
only way to exit stop mode is by watchdog reset Since there is little power saving, stop
mode is not recommended, as it is more efficient to use power down mode.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
NRF9E5IC 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:433/868/915MHz RF Transceiver with Embedded 8051 Compatible Microcontroller and 4 Input, 10 Bit ADC
nRF9E5-REEL 功能描述:射頻收發(fā)器 433/868/915MHz TRNSCVR RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調(diào)制格式:OQPSK 輸出功率:4 dBm 類(lèi)型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類(lèi)型:SPI 封裝 / 箱體:QFN-32 封裝:Tray
NRF-D 制造商:IDEC 功能描述:35mmDINKi[pT[Lbgz_ Bulk 制造商:IDEC CORPORATION 功能描述:DIN RAIL MT.ADAPTOR
NRF-HEAD-CAP-B 制造商:IDEC CORPORATION 功能描述:Circuit Protector
NRF-HEAD-CAP-W 制造商:IDEC CORPORATION 功能描述:Circuit Protector
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