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PMT9123QS-TVIT Datasheet(PDF) 6 Page - Pixart Imaging Inc.

Part No. PMT9123QS-TVIT
Description  Low Power Right Angle Optical Track Sensor
Download  15 Pages
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Maker  PIXART [Pixart Imaging Inc.]
Homepage  http://www.pixart.com.tw
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PMT9123QS-TVIT Datasheet(HTML) 6 Page - Pixart Imaging Inc.

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PixArt Imaging Inc.
PMT9123 Product Datasheet
Right Angle Optical Track Sensor
PixArt Imaging Inc. http://www.pixart.com
All rights reserved. Any portion in this paper shall not be reproduced, copied, or transformed to any other forms without permission.
Version 1.02 |12 Jul 2016 | 21001EN
2.5
AC Characteristics
Table 5. AC Electrical Specifications
Parameters
Symbol
Min.
Typ.
Max.
Unit Conditions
SCL Clock Frequency
fscl
400
kHz
Hold Time (repeated) START
condition
tHD_STA
0.6
us
After this period, the 1st clock
pulse is generated.
LOW period of the SCL Clock
tLOW
1.0
us
HIGH period of the SCL Clock
tHIGH
0.6
us
Set-up time for a repeated
START condition
tSU_STA
0.6
us
Data Hold Time
tHD_DAT
03
us
Data Set-up Time
tSU_DAT
100
ns
Rise Time of both SDA & SCL
signals
tr
20+0.1Cb4
300
ns
Fall Time of both SDA & SCL
signals
tf
20+0.1Cb4
300
ns
Set-up time for STOP condition
tSU_STO
0.6
us
Bus free between a STOP &
START condition
tBUF
1.3
us
Capacitive Load for each bus line
Cb
400
pF
Noise Margin at the LOW level
for each connected device
VNL
0.1VDD
V
Including hysteresis
Noise Margin at the HIGH level
for each connected device
VNH
0.2VDD
V
Including hysteresis
Notes:
1. All the parameters are tested under operating conditions: VDD = 1.8 V, TA = 25 °C.
2. All values referred to VIHmin and VILmax levels.
3. A device must internally provide a hold time of at least 300 ns for the SDA signal (referred to the VIHmin of the SCL
signal) to bridge the undefined region of the falling edge of SCL.
4. Cb = Total capacitance of one bus line in pF.


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