STMPE2403 datasheet(16/63 Pages) STMICROELECTRONICS

16 / 63 page

I2C Interface

STMPE2403

16/63

6.7

Operation modes

Figure 3.

Master/slave operation modes

Table 14. Operation modes

Mode

Bytes

Programming Sequence

Read

≥1

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 preformed. If

the register address falls within the range that allows address auto-

increment, then register address auto-increments internally after every

byte of data being read. For register address that falls within a non-

incremental address range, the address will be kept static throughout

the entire read operations. Refer to the Memory Map table for the

address ranges that are auto and non-increment. An example of such

a non-increment address is FIFO.

Write

≥1

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 register address auto-increments internally after every

byte of data being written in. For register address that falls within a

non-incremental address range, the address will be kept static

throughout the entire write operations. Refer to the Memory Map table

for the address ranges that are auto and non-increment. An example of

a non-increment address is Data Port for initializing the PWM

commands.

OneByte

Read

Morethan

OneByte

Read

OneByte

rite

Morethan

OneByte

rite

Master

Slave

Dev

Addr

Reg

Addr

Dev

Addr

Data

Read

Data

Read+1

Read

Dev

Addr

Reg

Addr

Datato

ritten

Dev

Addr

Reg

Addr

Dev

Addr

Data

Read

Datato

rite+1

Datato

rite+2

Dev

Addr

Reg

Addr

Datato

rite

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