Rabbit OP7100 User Manual download pdf (Page 6)

The SF1000 Series offers serial-interfaced Flash memory

designed to significantly increase the data-storage capabilities

of embedded control systems powered by Z•World single-

board computers (SBCs). Two models offer either 4 megabytes

or 8 megabytes of memory.

These cost-effective serial Flash cards are ideal for applica-

tions that require temporary storage of large amounts of data

collected from a system’s controlling device. Data stored on

the SF1000 can be retrieved and downloaded to another user

system via TCP/IP or serial communications, or the card itself

can easily be removed to facilitate data transfer at another

location.

The SF1000 comes with a 10-pin, 2-mm, 5 x 2 header. Two

optional 5 x 2 header locations are available (accommodating

plugs or sockets, SMT or through-hole), and a location is

also provided for a 7-pin in-line header or socket. Only six

connections are required to interface the SF1000 with

a Z•World SBC.

SBCs equipped with the Rabbit 2000™ microprocessor can

utilize the SF1000 with either a synchronous serial peripheral

interface (SPI) or an emulated SPI via parallel I/O ports

(requires Dynamic C® Premier 7.05 or greater). For applications

employing Z180-based single-board computers, the emulated

SPI method is used (requires Dynamic C® 32).*

* Please contact a Z•World Sales Representative for a listing of Z180-based

products currently supported by the SF1000 libraries.

control some digital switches for turning

equipment on/off and the like, and

finally we use the A/D converter to

monitor battery voltages.”

Because the TRAFINFO system is often

deployed in remote locations, the

Jackrabbit is configured to detect any

equipment problems and send out

immediate alarm notifications via E-mail

or pager. “If the battery voltage falls

below a certain value, for example, the

Trafmate unit will send a warning so the

customer can schedule maintenance

or at least account for the absence of

data,” says Murthy.

Product development and integration of

the Jackrabbit with different types of

wireless modems were a virtual breeze

with Z•World’s Dynamic C

software.

“Development wasn’t difficult at all,

with a little help from Z•World's tech-

nical support staff—in maybe less than a

month we had a working prototype,”

Murthy says. “Dynamic C is easy to learn

because in most cases it looks like regular

C, and since our previous development

effort was all in C-language, Dynamic C

made it very easy to transfer our appli-

cation over to the Jackrabbit board.”

Dynamic C’s customized libraries also

make it easy for TRAFINFO to implement

adjustments from one application to

another. “This concept of developing

libraries in Dynamic C has made it very

easy for us to create one application,

make some minor modifications, and

use it for another similar application,”

says Murthy.

Fetching Funds

The TRAFINFO system will help states

secure much-needed federal transpor-

tation funds at a time of increasing fiscal

responsibility and decreasing tax

revenues. “The government distributes

money based on a formula that takes

into account the amount of traffic each

state has,” says Murthy, “So it is

absolutely crucial that agencies present

reliable, accurate information to receive

the funds they deserve.”

For this reason alone, Murthy sees a

bright future for the TRAFINFO system,

projecting that sales will eventually

reach up to 500 units per year. So the

next time you’re driving down the inter-

state, don’t be surprised if you see some

Jackrabbits on the road!

TRAFINFO.COM

781.863.0051

www.trafinfo.com

continued from page 5

SF1000 Serial Flash Expansion Boards

In Control • Fall 2001 • www.zworld.com

8 MB: $149

4 MB: $99

Shown Actual Size:

1.75" x 1.51" x 0.25"

(44.5 x 38.4 x 6.4 mm)

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