STLED325 datasheet(47/62 Pages) STMICROELECTRONICS

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STLED325

Commands

Doc ID 17576 Rev 1

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Any subsequent data bytes in this case will be ignored.

On power application, the normal operation mode and address increment mode is set with

the default display memory address set to 0x10 (start of display memory address location).

Refer to the display memory section.

In the auto increment address mode, the address command is sent once followed by the

data bytes.

Alternatively, the data command can be sent followed by the data bytes. In this case, when

new display data is to be written, the last value of the address will be used and then

incremented. Upon reaching the last display memory address, the address jumps to 0x10,

as it represents the first address location of the display memory.

Table 27.

Data Write 2 command. B5 b4: 01

B1-b0

Reserved

Reserved (RC6 disable)

Reserved (RC6 enable)

Enter standby mode

Table 28.

Data Read 1 command. b5 b4: 10

b1-b0

Read Key (following 2 bytes will contain key data)

Read GPIO register (following 1 byte will contain the GPIO data with

MSB7: GPIO1 data and MSB6: GPIO0 data). This is the input monitor for

GPIO[1:0] for reading purpose. When b7 of subsequent byte is low, it

means that GPIO1 input is low and when it is high, it means that GPIO1

input is high. When b6 of subsequent byte is low, it means that GPIO0

input is low and when it is high, it means that GPIO0 input is high.

Read RC data (following four bytes are the address + command bytes from

RC)

Read Interrupt status register (refer to the Interrupt Flag section for

detailed description)

Table 29.

Data Read 2 command. b5 b4: 11

b1-b0

Reserved

Read configuration byte values (see section on configuration bytes)

Read LED display memory

Read RTC memory. Address command must be issued prior to reading.

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