STFPC320 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STFPC320

Front panel controller/driver with standby power management and real-time clock

STMicroelectronics 

Commands

STFPC320

7.2

Data setting command

This command sets the data-write and data-read modes.

Description:

MSB

0

1

LSB

b5

b4

b3

b2

b1

b0

Bits b7-b6 = 01 is decoded as a data setting command. The subsequent bits are

decoded as follows:

b5 b4 = 00: data write command (see bits b1-b0)

b5 b4 = 10: data read 1 command (see bits b1-b0)

b5 b4 = 11: data read 2 command (see bits b1-b0)

b5 b4 = 01: reserved

b3: clear the guard timer (no change in guard time)

b2: ‘1’ implies fixed address of display RAM/ ‘0’ implies auto increments the address

after data has been written.

Table 9. Data write command. b5 b4: 00

b1-b0

00

Write memory (display or RTC) – See Note Note: on page 37

Enter Test mode (only used for production test)

01

Do not use this in normal operation.

Clear Test mode

10

Do not use this in normal operation.

11

Write LED (see Section 9: LED port on page 44)

Table 10. Data read 1 command. b5 b4: 10

b1-b0

00

Read Key (Section 8: Key matrix on page 42)

Read Switch + Address Pointer

01

(see Section 10: SW data on page 45)

10

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

RC); Refer to Section 15: Remote control protocols on page 51

11

Read Interrupt (refer to Section 14: Interrupt flags on page 50)

Table 11. Data read 2 command. b5 b4: 11

b1-b0

00

Reserved

01

Read Configuration (see Section 13: Configuration data on page 48)

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