UTC UT84520

CMOS IC

QW-R502-004,A

b).Resend (FE)

a). Any time UT84520 receives an invalid command, it returns a Resend command to the system.

b). When UT84520 receives a Resend command, it retransmits its last packet of data. If the last packet was a

Resend command, it transmits the packet just prior to the Resend command.

c). In Stream mode, if a Resend command is received by UT84520 immediately following a 3-byte data packet

transmission to the system

c). Set Default (F6)

The command initializes all condition to the Power-on defaults

d). Disable (F5)

This command is used in the stream mode to stop transmissions from UT84520

e). Enable (F4 )

Begins transmissions. If in stream mode.

f). Set Sampling Rate (F3,XX )

In the stream mode, this command sets the sampling rate to the value indicated by byte hex XX,

Shown in following:

Second byte XX

Sample Rate

0A

10/sec

14

20/sec

28

40/sec

3C

60/sec

50

80/sec

64

100/sec

C8

200/sec

g). Read Device Type (F2)

UT84520 always echoes "FA, 00" following this command

h). Set Remote Mode (F0)

Data value are reported only in response to a Read Data command

i). Set Wrap Mode (EE)

Wrap mode remains until Reset (FF) or Reset Wrap Mode

(EC) is received

j).Reset Wrap Mode (EC)

UT84520 returns to the previous mode of operation after receiving this command

k). Read Data (EB )

This command is executed in either remote or stream mode. The data is transmitted even if there has been no

movement since the last report or the button status is unchanged. Following a Read Data command, the

registers are cleared after a data transmission.

l). Set Stream Mode (EA)

This commnd sets UT84520 in stream mode.

m). Status Request (E9)

When this command is issued by the system, UT84520 respond with a 3-byte status report as following: