stmpe610 STMicroelectronics, stmpe610 Datasheet - Page 10

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

I2C interface
4.2
10/58
Data input
The device samples the data input on SDATA on the rising edge of the SCLK. The SDATA
signal must be stable during the rising edge of SCLK and the SDATA signal must change
only when SCLK is driven low.
Table 8.
Figure 6.
More than one byte
More than one byte
Mode
Read
Write
One byte
One byte
Read
Read
Read
Write
Operating modes
Read and write modes (random and sequential)
Byte
≥1
≥1
Address
Address
Address
Address
Master
Slave
Device
Device
Device
Device
Start, Device address, R/W = 0, Register address to be read
Restart, Device address, R/W = 1, Data Read, Stop
If no Stop is issued, the Data Read can be continuously performed. If
the register address falls within the range that allows an address auto-
increment, then the register address auto-increments internally after
every byte of data being read.
Start, Device address, R/W = 0, Register address to be written, Data
Write, Stop
If no Stop is issued, the Data Write can be continuously performed. If
the register address falls within the range that allows address auto-
increment, then the register address auto-increments internally after
every byte of data being written in. For those register addresses that
fall within a non-incremental address range, the address will be kept
static throughout the entire write operation. Refer to the memory map
table for the address ranges that are auto and non-increment.
Address
Address
Address
Address
Reg
Reg
Reg
Reg
Data to
written
Write
to be
Data
Address
Address
Device
Device
Programming sequence
Write + 1
Data to
Read
Read
Data
Data
Write + 2
Data to
Read + 1
Data
Read + 2
Data
STMPE610