Z8F2480 Datasheet, PDF (11/24 Pages) Zilog, Inc. – Load current up to 3 amps

Z8F2480 Power Monitor with an eZ80F91 Webserver
Reference Design
10 Mbps Half-Duplex Link established
Querying DHCP Server...
DHCP OK
Initializing network stack...
IF IP addr
Def Gtway
State Type
H/W Addr
0 192.168.1.72 192.168.1.254 UP
Ethernet 0 :90:23:0 :F :91
HTTPD ready
9. When the IP address of the eZ80F91 Webserver Module has been determined, open a
web browser (such as Internet Explorer) on the PC. In the address bar, enter the IP
address of the eZ80F91 Module as displayed by the terminal program.
Note: DHCP servers will typically reassign the same IP address to a device if it is restarted
within a short period of time. Therefore, on subsequent attempts to view the Power Moni-
tor web page, it is usually not necessary to connect the Zilog Serial Adapter to the Power
Board or use the terminal program. Instead, simply enter the IP address last used by the
eZ80F91 Webserver to access the Power Monitor web page.
10. Each time the Power Monitor web page is refreshed, it shows the most recent AC
measurements obtained by the Power Board. To obtain an updated set of measurement
values, click the Refresh button on the web page. To cause the web page to automati-
cally refresh the display, change the Auto Refresh Period from 0 seconds to a nonzero
value, then click the Refresh button. The Refresh button will then change to a Stop
button; therefore, to stop automatic updates of the AC measurements, click the Stop
button.
Powering the Board and Module
The Power Board receives its power from the same one-phase AC source as the load, with
a voltage range of 90 V to 240 V RMS. If any measurements on the Board will be per-
formed, an isolated power source (i.e., an isolation transformer) should be used to avoid
the hazards of electrical shock and board damage.
The eZ80F91 Module requires an isolated +5 V source (via wall adapter) connected to
Power Jack J7 on the Power Board; for reference, see Figure 4 on page 4.
The Board wakes up with a delay time of approximately one second; the load is connected
immediately. Load current is not fuse-protected; therefore, external protection should be
implemented to prevent damage to the AC line and the Board in the event of a short circuit.
Warning: The Power Board is electrically connected to AC power and contains points with high
voltage (up to 400 V). If any measurements will be performed on this reference design,
a power supply with an isolation transformer should be used to avoid electrical shock.
RD002702-0814
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