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UT84520 Datasheet(PDF) 5 Page - Unisonic Technologies

Part # UT84520
Description  PS/2 SCROLLING MOUSE CONTROLLER
PDF  13 Pages
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Manufacturer  UTC [Unisonic Technologies]
Direct Link  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UT84520 Datasheet(HTML) 5 Page - Unisonic Technologies

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UTC UT84520
CMOS IC
UTC UNISONIC TECHNOLOGIES CO., LTD. 5
QW-R502-004,A
AC Electrical Characteristics (Ta = 25 ℃ to 70 ℃)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
Oscillating Frequency
Fosc
37-3%
37
37+3%
KHz
Key Debounce
Tkd
12
ms
Rising Edge Crossed Width
Tr
13.5
µs
Falling Edge Crossed Width
Tf
13.5
µs
Mouse CLK Active Time
Tmca
40.5
µs
Mouse CLK Inactive Time
Tmci
40.5
µs
Time that Mouse Sample DATA from
CLK rising Edge
Tmdc
13.5
µs
System CLK Active Time
Tsca
40.5
µs
System CLK Inactive Time
Tsci
40.5
µs
Time from DATA Transition to Falling
Edge of CLK
Tsdc
13.5
µs
Time from rising Edge of CLK to DATA trasition
Tscd
27.0
µs
Time to mouse Inhibit after the 11th CLK to ensure mouse
does not start another Transmission
Tpi
0
50
µs
Timing Diagram
(A) Photo-couples pulse width
Tr
Tf
X1(Y1)
X2(Y2)



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