www.ite.com.tw i IT7259 V0.2
CONTENTS
1. Features ......................................................................................................................................................... 1
2. General Description ........................................................................................................................................ 3
3. Block Diagram ................................................................................................................................................ 5
4. Pin Configuration ............................................................................................................................................ 7
5. Pin Description ............................................................................................................................................... 9
6. Serial Interface ............................................................................................................................................. 11
6.1 Overview ............................................................................................................................................ 11
6.2 I
2
C –compatible Interface .................................................................................................................. 11
6.2.1 Device Address ..................................................................................................................... 11
6.2.2 Data Transfer ........................................................................................................................ 11
7. Hardware Reset ........................................................................................................................................... 13
8. DC Characteristics ....................................................................................................................................... 15
9. AC Characteristics ........................................................................................................................................ 17
10. Package Information .................................................................................................................................... 19
11. Ordering Information .................................................................................................................................... 21
12. Top Marking Information .............................................................................................................................. 23
FIGURES
Figure 3-1. Block Diagram ................................................................................................................................... 5
Figure 4-1. IT7259 32-pin XQFN (IT7259Q-24) .................................................................................................. 7
Figure 4-2. IT7259 24-pin QFN (IT7259Q-13) ..................................................................................................... 8
Figure 6-1. Example of I2C Timings for Single Data Write Operation ............................................................... 12
Figure 6-2. Example of I2C Timings for Single Data Read Operation .............................................................. 12
Figure 7-1. Definition of Timing for Hardware Reset ......................................................................................... 13
Figure 7-2. Definition of Timing for Sleep Mode ................................................................................................ 13
Figure 9-1. Definition of Timings for I
2
C Interface ............................................................................................. 17
TABLES
Table 4-1. IT7259 Pins Listed in Numeric Order (32-pin XQFN)
......................................................................... 7
Table 4-2. IT7259 Pins Listed in Numeric Order (24-pin QFN)
........................................................................... 8
Table 5-1. Description of Capacitance Sensor Related Pins .............................................................................. 9
Table 5-2. Description of System Control Pins .................................................................................................... 9
Table 5-3. Pin Description of I2C Interface.......................................................................................................... 9
Table 5-4. Description of Power/Ground Signals ................................................................................................ 9
Table 7-1. Hardware Reset Timing .................................................................................................................... 13
Table 9-1. I2C AC Characteristics ..................................................................................................................... 17
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