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參數(shù)資料
| 型號： | CC2420 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 2.4 GHz IEEE 802.15.4 / ZigBee-ready RF Transceiver |
| 中文描述： | 2.4 GHz IEEE 802.15.4標準/ ZigBee功能的RF收發(fā)器 |
| 文件頁數(shù)： | 52/87頁 |
| 文件大?。?/td> | 1418K |
| 代理商： | CC2420 |
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SmartRF
CC2420
VREG_IN
Internal
bandgap
voltage
reference
1.25 V
BATTMON.BATTMON_VOLTAGE[4:0]
BATTMON.BATTMON_OK
BATTMON.BATTMON_EN
Figure 28. Battery monitor, simplified schematic
The battery monitor is controlled through
the
BATTMON
control register. The battery
monitor is enabled and disabled using the
BATTMON.BATTMON_EN
control bit. The
voltage regulator must also be enabled
when using the battery monitor.
The battery monitor status bit is available
in the
BATTMON.BATTMON_OK
status bit.
This bit is high when the
VREG_IN
input
voltage is higher than the toggle voltage
V
toggle
.
The battery monitor toggle voltage is set in
the 5-bit
BATTMON.BATTMON_VOLTAGE
control bits.
BATTMON_VOLTAGE
is an
unsigned, positive number from 0 to 31.
The toggle voltage is given by:
27
72
V
25
.
V
toggle
LTAGE
BATTMON_VO
=
Alternatively, for a desired toggle voltage,
BATTMON_VOLTAGE
according to:
should
be
set
V
25
.
27
72
V
toggle
=
LTAGE
BATTMON_VO
The voltage regulator must be enabled for
at
least
100
μs
measurement. After being enabled, the
BATTMON_OK
status bit need 2 μs to
settle for each new toggle voltage
programmed.
before
the
first
The main performance characteristics of
the battery monitor is shown in the
Electrical Specifications section on page
9.
Crystal Oscillator
An external clock signal or the internal
crystal oscillator can be used as main
frequency
reference.
frequency must be 16 MHz. Because the
crystal frequency is used as reference for
the data rate as well as other internal
signal
processing
frequencies cannot be used.
The
reference
functions,
other
If an external clock signal is used this
should be connected to
XOSC16_Q1
, while
XOSC16_Q2
should be left open. The
MAIN.XOSC16M_BYPASS
bit must be set
when an external clock signal is used.
Using the internal crystal oscillator, the
crystal must be connected between the
XOSC16_Q1
and
XOSC16_Q2
pins. The
oscillator is designed for parallel mode
Chipcon AS
SmartRF
CC2420 Preliminary Datasheet (rev 1.2), 2004-06-09
Page 52 of 87
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| CC2420/T&R | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:2.4 GHz IEEE 802.15.4 / ZigBee-ready RF Transceiver |
| CC2420/TR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:2.4 GHz IEEE 802.15.4 / ZigBee-ready RF Transceiver |
| CC2420DBK | 功能描述:Zigbee/802.15.4開發(fā)工具 CC2420 DEMO KIT 2 DEMO BOARDS RoHS:否 制造商:Silicon Labs 產(chǎn)品:Development Kits 工具用于評估:EM35x 頻率:2.4 GHz 接口類型:USB 工作電源電壓: |
| CC2420DK | 功能描述:Zigbee/802.15.4開發(fā)工具 CC2420 DEVELOPMENT KIT RoHS:否 制造商:Silicon Labs 產(chǎn)品:Development Kits 工具用于評估:EM35x 頻率:2.4 GHz 接口類型:USB 工作電源電壓: |
| CC2420EMK | 功能描述:Zigbee/802.15.4開發(fā)工具 CC2420 EVALUATION KT (2)PCBs & (2)ANTENNA RoHS:否 制造商:Silicon Labs 產(chǎn)品:Development Kits 工具用于評估:EM35x 頻率:2.4 GHz 接口類型:USB 工作電源電壓: |
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