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| 型號(hào)： | DRM049 |
| 英文描述： | Internet Connectivity with HCS12 16-bit Microcontroller using the ACP |
| 中文描述： | 互聯(lián)網(wǎng)連接與HCS12的16位微控制器使用非加太 |
| 文件頁數(shù)： | 47/80頁 |
| 文件大小： | 1025K |
| 代理商： | DRM049 |
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Software
Software Routines
DRM040 — Rev 0
Designer Reference Manual
MOTOROLA
Software
47
3.1.12 ProgEeprom
The ProgEeprom function is used to write to and read from the emulated
Eeprom. Eeprom emulation is achieved using the ROM resident
EE_WRITE and EE_READ routines that are available on the LJ12 MCU.
The function has been written in ‘C’ and uses the inline assembler to
access the ROM resident routines. A summary of how the routines are
used is described below. However, for further information refer to section
10.6 ROM Resident Routines the MC68HC908LJ12 data book.
FLASH memory differs from EEEPROM in the number of bytes that can
be written or erased at a time. In true EEPROM, write and erase
operations can be performed on a byte-by-byte basis. However, FLASH
only allows page erase, which is 128 bytes on the LJ12. The EE_WRITE
and EE_READ routines have been designed to emulate the properties
of true EEPROM, thus allowing more efficient use of the FLASH array for
NVM storage. If the user dedicates a page of FLASH for data storage,
each call of the EE_WRITE routine shall copy the data stored in the RAM
data array to the next blank block of locations within the FLASH page.
Once a page is filled up the routine automatically erases the page and
starts reusing the page from the original start location. For example,
when the routine is used to store 2 bytes of data array, the flash page
can be programmed 60 times before it is erased, subsequently
increasing the write/erase endurance by 60. Two flash pages have been
used in the design. Flash Page 0 (C000 – C07F) is used to store the tariff
switch times and Flash page 1 (C080 – C0FF) is used to store timestamp
and duration information.
Figure 3-12
shows the NVM bytes stored in the
emulated EEPROM.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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| DRM10 | 功能描述:DIP 開關(guān)/ SIP 開關(guān) BCD 10 POS 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(diǎn)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 |
| 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(diǎn)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 |
| DRM101 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Blood Pressure Monitor Using the Flexis QE128 Family |
| DRM10C | 功能描述:SWITCH DIP MINI SHAFT 10POS T/H RoHS:否 類別:開關(guān) >> DIP 系列:DR 特色產(chǎn)品:RDM Series Rotary DIP Switch 標(biāo)準(zhǔn)包裝:70 系列:RDM 電路:十六進(jìn)制 位置數(shù):16 觸點(diǎn)額定電壓:0.1A @ 42VDC 觸動(dòng)器類型:用于工具旋轉(zhuǎn) 觸動(dòng)器電平:凹槽式 安裝類型:通孔 方向:頂部觸動(dòng) 可清洗:是 其它名稱:EG4977-5RDMAR16PIT |
| DRM10C04 | 功能描述:編碼式波段開關(guān) SW DIP MINI SHAFT 10POS T/H RoHS:否 制造商:C&K Components 位置數(shù)量:10 輸出代碼:Binary Coded Decimal 執(zhí)行器:Screwdriver 觸點(diǎn)額定值: 端接類型:Solder Pin 封裝:Tube |
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