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STMPE2403 датащи(PDF) 15 Page - STMicroelectronics

номер детали STMPE2403
подробное описание детали  24-bit Enhanced port expander with Keypad and PWM controller Xpander logic
PDF  63 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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STMPE2403 датащи(HTML) 15 Page - STMicroelectronics

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STMPE2403
I2C Interface
15/63
6.5
Slave device address
The slave device address is a 7 or 10-bit address, where the least significant 2-bit are
programmable. These 2-bit values will be loaded in once upon reset and after that these 2
pins no longer be needed with the exception during General Call. Up to 4 STMPE2403
devices can be connected on a single I2C bus.
6.6
Memory addressing
For the bus master to communicate to the slave device, the bus master must initiate a Start
condition and followed by the slave device address. Accompanying the slave device
address, there is a Read/Write bit (R/W). The bit is set to 1 for Read and 0 for Write
operation.
If a match occurs on the slave device address, the corresponding device gives an
acknowledgement on the SDA during the 9th bit time. If there is no match, it deselects itself
from the bus by not responding to the transaction.
Table 13. Slave device address
ADDR 1
ADDR 0
Address
0
0
0x84
0
1
0x86
1
0
0x88
11
0x8A



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