STMPE1601TBR STMICROELECTRONICS [STMicroelectronics], STMPE1601TBR Datasheet - Page 12

• Manufacturer Part Number: STMPE1601TBR
• Description: 16-bit enhanced port expander with keypad and PWM controller Xpander Logic
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

I2C interface
6
6.1
6.2
12/58
I
The features that are supported by the I
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The address is selected by the state of 3 pins. The state of the pins is read upon reset and
then the pins can be configured for normal operation. The pins have a pull-up or down to set
the address. The I
registers in the STMPE1601.
Table 12.
Start condition
A Start condition is identified by a falling edge of SDATA while SCLK is stable at high state.
A Start condition must precede any data/command transfer. The device continuously
monitors for a Start condition and does not respond to any transaction unless one is
encountered.
Stop condition
A Stop condition is identified by a rising edge of SDATA while SCLK is stable at high state.
A Stop condition terminates the communication between the slave device and bus master. A
read command that is followed by NoAck can be followed by a Stop condition to force the
slave device into idle mode. When the slave device is in idle mode, it is ready to receive the
next I
operation to the registers.
2
C interface
I
Operates at 1.8 V
Compliant to Philips I
Supports standard (up to 100kbps) and fast (up to 400 kbps) modes
7-bit and 10-bit device addressing modes
General Call
Start/Restart/Stop
Address up to 8 STMPE1601 devices via the I
2
2
C slave device
C transaction. A Stop condition at the end of a write command stops the write
A2
0
0
0
0
1
1
1
1
I
2
C addresses
2
C interface module allows the connected host system to access the
2
C specification version 2.1
A1
0
0
1
1
0
0
1
1
2
C interface are listed below:
2
C interface
A0
0
1
0
1
0
1
0
1
Address
40h
41h
42h
43h
44h
45h
46h
47h
STMPE1601