SC84502 데이터 시트보기 (PDF) - Silan Microelectronics
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SC84502 Datasheet PDF : 14 Pages
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Silan
Semiconductors
SC84502
(continued)
Parameter
Symbol
Condition
Min Typ Max Unit
Schmitt trigger input, Ipl=76µA 0.8
--
1.2
V
X1,X2,Y1,Y2 input current
Vpl Comparator input, Ipl=80µA
0.8
--
1.2
V
Comparator input, Ipl=500µA
1.5
--
2.1
V
CLK, DATA positive-going
threshold voltage
Vt+ --
3.2
--
3.8
V
CLK, DATA negative-going
threshold voltage
Vt- --
1.2
--
1.9
V
Low Input Voltage, Other Pins
Vail --
--
--
1.5
V
High Input Voltage, Other Pins
Vaih --
3.5
--
--
V
L,M,R Input Current
Imi Pull Up Resistor, Vin=5V
16.6 --
50 µA
PS/2 mouse mode
DATA,CLK input Current
Idc Vin = 0V
0.56 -- 1.86 mA
PS/2 mouse mode
DATA,CLK low output Voltage
Vprl Iprl = -2 mA
--
--
0.4
V
L,M,R,X1,X2,Y1,Y2
Input Leakage Current
Iil Vin = 0V
0
--
1.0 µA
Note: All voltages in above table are compared with VSS.
All parameters in above table are tested under VDD=5V.
CLK & DATA output gates are open drains that connect to pull up resistors.
AC ELECTRICAL CHARACTERISTICS ( Tamb = 0 ~ 70°C)
Parameter
Symbol Min
Typ
Max Unit
Oscillating Frequency
Fosc 34.3-10% 34.3 34.3+10% kHz
Key Debounce
Tkd
--
12
--
ms
Rising Edge Crossed Width Fosc=35 kHz
Tr
14.3
--
--
µs
Falling Edge Crossed Width Fosc=35 kHz
Tf
14.3
--
--
µs
Mouse CLK Active Time
Mouse CLK Inactive Time
Time that Mouse Sample DATA from CLK rising Edge
System CLK Active Time
System CLK Inactive Time
Time from DATA Transition to Falling Edge of CLK
Time from rising Edge of CLK to DATA Transition
Tmca
--
42.9
--
µs
Tmci
--
42.9
--
µs
Tmdc
--
14.3
--
µs
Tsca
--
42.9
--
µs
Tsci
--
42.9
--
µs
Tsdc
--
14.3
--
µs
Tscd
--
28.6
--
µs
Time to mouse Inhibit after the 11th CLK to
ensure mouse does not start another Transmission
Tpi
0
--
50
µs
Note: The AC timings are measured under using 35kHz system clock signal.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2000.12.31
3
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