stmpe610 STMicroelectronics, stmpe610 Datasheet - Page 8

• Manufacturer Part Number: stmpe610
• Description: Advanced Touch Screen Controller With 6-bit Port Expander
• Manufacturer: STMicroelectronics

I2C interface
4
8/58
I
The addressing scheme of STMPE610 is designed to allow up to 2 devices to be connected
to the same I
Figure 4.
Table 6.
For the bus master to communicate to the slave device, the bus master must initiate a Start
condition and be followed by the slave device address. Accompanying the slave device
adress, 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 acknowledge
on the SDA during the 9
responding to the transaction.
Figure 5.
2
SCLK
SDAT
C interface
GND
VCC
SDA
SCL
tBUF
STMPE610 I
I
I
2
2
2
C bus.
C address
C timing diagram
P
ADDR0
0
1
S
th
2
bit time. If there is no match, it deselects itself from the bus by not
C interface
tHD:STA
tR
tLOW
tHIGH
tF
tHD:DAT
tSU:DAT
SCLK
SDAT
ADDR0
SR
Address
tSU:STA
0 x 82
0 x 88
STMPE610
tHD:STA
P
AI00589
STMPE610
tSU:STO
AM00753V