The CF Interface is basically a Parallel ATA interface transferring 8 or 16 bit data in standard Memory and I/O modes or in TRUE IDE mode. Industrial CF cards can operate at a range of -40° to +85° C. CF cards with flash memory are able to cope with extremely rapid changes in temperature. CF 5.0 introduced support for LBA-48 addressing. CF (in TRUE IDE mode) supports cylinder-head-sector| (C-H-S) and 28-bit logical block addressing (LBA 28). CF devices must operate at 3.3 volts or 5 volts, and can be swapped from system to system. The CF device contains an Advanced Technology Attachment|ATA controller mode and appears to the host device as if it were a hard disk.
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“It can be easily slipped into a passive 68-pin PCMCIA Type II to CF Type I adapter.The interface operates, depending on the state of mode pin 9 on power-up, as either a 16-bit PC Card Memory or I/O mode card, or as an IDE/PATA Disk via TRUE IDE mode.ĬF IDE mode defines an interface that is Physically smaller than, but electrically identical to the PATA/IDE interface. The CompactFlash interface is a 50-pin subset of the 68-pin PCMCIA connector. The passive adapter takes care of grounding pin 9. When is TRUE IDE mode the CF card is not hot swappable. This mode is entered when the card has pin 9 grounded on the 50 pin connector when power is applied. This is because the CF card has a TRUE IDE mode, which allows the CF card to function exactly as a PATA/IDE drive. Hence the CF card can serve as a disk drive in a Legacy PC using the IDE interface. Since the CF card is based on the PATA/IDE interface, it can easily be put on an PATA/IDE disk interface, as a Master or Slave device. We now have CF 6.1, which introduces the fastest transfer speeds yet, using Ultra DMA 7 (UDMA 7)ĬF cards can be used directly in a PC card slot with a plug-in adapter, used as an ATA (IDE) or PCMCIA storage device with a passive adapter or with a reader. There are four main card speeds: original CF, CF High Speed (using CF+/CF2.0), faster CF 3.0 standard and the faster CF 4.0 standard adopted as of 2007. The type II slot is used by miniature hard drives and in some specialty cameras, but is not as common. There are two main subdivisions of CF cards, 3.3 mm thick type I and 5 mm-thick type II (CF2).
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CFast (also known as CompactFast) is based on the Serial ATA (SATA) interface. Traditional CF cards use the Parallel ATA (PATA) interface, but in 2008, a variant of CompactFlash, CFast was announced.
Formats such as MMC/SD memory cards are smaller than CF, while offering comparable capacity and speed.
CompactFlash (CF) became the most successful of the early memory card formats, surpassing miniature and Smart media cards.
Standard operating temperature range of SeaDAC modules is 0C to +70C and extended temperature range (-40C to +85C) is optional.Industrial CF and SD cards are the most common Flash storage form factors in industrial applications. The 8113 is USB bus powered, so no external power supply is needed. SeaDAC Lite modules are housed in a rugged, attractive plastic enclosure ideal for mounting on walls, under counters, or inside panels. When used with the included USB cable with a SeaLATCH USB type B connector, the metal thumbscrew provides a secure connection to the device and prevents accidental cable disconnection. The 8113 integrates Sealevel’s SeaLATCH locking USB port, which is fully compatible with standard USB cables.
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Sealevel’s SeaMAX software drivers and utilities make installation and operation easy using Windows and Linux operating systems. The SeaMAX software suite supports the SeaDAC Lite family and is designed to work with third party applications via the SeaMAX API. Status LEDS display I/O activity and field wiring is simplified via 3.5mm removable terminal blocks. Inputs can range from 5-30VDC and provide 3500VDC (2500VAC RMS) isolation to ground. Control and monitor four optically isolated inputs via any USB connection with the 8113.
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