參數(shù)資料
型號: DRM057
英文描述: Open Loop Universal Motor Chopper based on the MC68HC908QT4 Microcontroller
中文描述: 開環(huán)通用汽車在MC68HC908QT4斬波基于單片機
文件頁數(shù): 19/48頁
文件大?。?/td> 1131K
代理商: DRM057
Optical Mouse Transmitter
System Overview
DRM050 — Rev 0
Designer Reference Manual
MOTOROLA
Optical Mouse Transmitter
For More Information On This Product,
Go to: www.freescale.com
19
3.2.3 RF Transmission
The data from the MCU will be transferred to the baseband IC for parallel
to serial packet conversion as well as error checking. The encoded data
will be passed to the RF module for ASK modulation in IF band and
frequency spreading with DSSS scheme. The modulated signal will be
further up-converted into 2.4-GHz ISM band for final transmission.
3.2.4 DC/DC Converter
The power supply for a handheld device should be able to keep the DC
voltage output at a constant level even though the input battery voltage
is continuously dropping down. There are two DC/DC converters; the
3.3-V supply is used for the baseband IC and RF module. The 5-V
supply is only used for the JB8, but it would be eliminated in the final
product when the low-voltage version JT8 is used.
F
Freescale Semiconductor, Inc.
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DRM1004 功能描述:DIP 開關(guān)/ SIP 開關(guān) ROTARY DIP SWITCH PLASTICSHAFT RoHS:否 制造商:Omron Electronics 位置數(shù)量:10 開關(guān)類型:DIP 執(zhí)行器:Rotary 端子節(jié)距:2.54 mm 觸點形式: 端接類型:Solder Pin 電流額定值:100 mA 電壓額定值 DC: 工作溫度范圍: 安裝:Through Hole
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