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參數資料
| 型號： | MC33690 |
| 廠商： | Motorola, Inc. |
| 英文描述： | Standalone Tag Reader Circuit |
| 中文描述： | 獨立標簽讀寫器電路 |
| 文件頁數： | 13/24頁 |
| 文件大小： | 442K |
| 代理商： | MC33690 |
Go to: www.freescale.com
revision 4.8, 5 February 2002
Motorola, Inc., 2002.
DIRECT CONNECTION TO A MICROCONTROLLER CONFIGURATION
When a high level is applied on MODE1, the
circuit is in
configuration C
(direct connection to
a microcontroller configuration, see figure 15
page 19).
The demodulated data are sent through DOUT.
The AM pin is set as a VDD referenced input pin
receiving the AM command. Forcing high and
low levels on AM achieves the amplitude
modulation by switching on/off both antenna
drivers. Meanwhile, this amplitude modulation
can be monitored on DOUT. This allows antenna
short and open circuit diagnosis.
The circuit can be put into
standby mode
by
applying a low level on the MODE2 pin.
In standby mode, the oscillator and most of the
internal biasing currents are switched off.
Therefore, the functions (tag reader, ISO 9141
interface) are inactive except the voltage
regulator. The driver outputs TD1 and TD2 are
frozen in their state (high or low level) before
entering into standby mode. DOUT forces a low
level.
The ISO 9141 interface K is standalone and can
be directly controlled by the input pin Tx and
monitored by the output Rx.
Applying a logic high level on Tx switches the
output driver K on (dominant zero state when an
external pull-up resistor is connected between K
and VBAT). Applying a logic low level turns the
driver off (one recessive state).
Rx monitors the voltage at the K pin. When the
voltage is below the low threshold voltage, Rx
forces a logic low level. When the voltage is
above the high threshold voltage, Rx forces a
logic high level.
In standby mode, Tx is disabled and Rx output
monitors the voltage at the K pin.
Figure 10 : Configuration C state diagram
TD1/2 off
standby
wake up
mode2 low
mode2 high
mode2 low
TD1/2
switching
AM high
AM high
AM low
reset
AM low
F
Freescale Semiconductor, Inc.
For More Information On This Product,
n
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相關代理商/技術參數 |
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| MC33690DWE | 功能描述:數字信號處理器和控制器 - DSP, DSC STAND ALONE TAG READER RoHS:否 制造商:Microchip Technology 核心:dsPIC 數據總線寬度:16 bit 程序存儲器大小:16 KB 數據 RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數量:35 定時器數量:3 設備每秒兆指令數:50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT |
| MC33690DWER2 | 功能描述:數字信號處理器和控制器 - DSP, DSC STAND ALONE TAG READER RoHS:否 制造商:Microchip Technology 核心:dsPIC 數據總線寬度:16 bit 程序存儲器大小:16 KB 數據 RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數量:35 定時器數量:3 設備每秒兆指令數:50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT |
| MC33696FCAE | 功能描述:射頻收發器 UHF TRANSCEIVER RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數據速率:2000 Kbps 調制格式:OQPSK 輸出功率:4 dBm 類型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類型:SPI 封裝 / 箱體:QFN-32 封裝:Tray |
| MC33696FCAER2 | 功能描述:射頻收發器 UHF TRANSCEIVER ECHO RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數據速率:2000 Kbps 調制格式:OQPSK 輸出功率:4 dBm 類型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類型:SPI 封裝 / 箱體:QFN-32 封裝:Tray |
| MC33696FCE | 功能描述:射頻收發器 PLL Tuned UHF Recvr RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數據速率:2000 Kbps 調制格式:OQPSK 輸出功率:4 dBm 類型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類型:SPI 封裝 / 箱體:QFN-32 封裝:Tray |
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