STFPC320 查看數據表（PDF） - STMicroelectronics

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STFPC320

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

STMicroelectronics 

Commands

The first byte after the configuration command is in the following format:

Figure 14. First byte format after configuration byte

MSB

LSB

b7 b6 b5 b4 b3 b2 b1 b0

STFPC320

REMOTE CONTROL PROTOCOL

SETTING

(Decoded format since b7=‘0’)

0110 : R2000

0000 : RC Disable 0111 : RCA

0010 : RC-5

0101 : Sony

0011 : Reserved 0001: Matsushita

0100 : NEC

GUARD TIMER SETTING

0000 : Turned off

0001 : 1 seconds

1111 : 15 seconds

xxxx : No. of seconds in BCD

format

When b7 = ‘0’, incoming RC data is output on SDA in decoded format where the Device

Address, Start Bit, Toggle Bit and Data Bits are sent. Note that the default location is 0x00

for the first device address. This order of the bits sent is in the same format as the incoming

RC data.

When b7 = ‘1’, incoming raw data (no header information) is output on SDA.Address

decoding is still performed to decode the corresponding RC protocol. The format of the data

on SDA corresponds to the format of the respective RC frame.

For details, refer to the RC protocol section of the datasheet.

Upon power application, the following modes are selected:

● Normal display setting: 16-digit, 12-segment mode is selected (default: display off and

keyscan on).

● Remote control protocol setting: RC-5 with raw format.

● Guard timer setting: turned on with 10s. After the first command is processed by

STFPC320, the guard timer is turned off until it is turned on by the host.

● Guard timer action: issue standby.

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